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CSLB 864095

DelGrosso Design Custom Concrete & Restoration

Catalog of Products and Services

www.delgrossodesign.com

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HISTORY - The Company was founded in California in 2002 by Andy DelGrosso after more than

10 years of being in business in Northern Italy (Lake Como), where he was born and raised.

Andrea's (Andy's birth name, like Bocelli, the Italian opera singer) construction background

goes back to when he was 16 and, following the footsteps of his grandfather and his dad,

started building with stone and concrete. Over the years he developed his own artistic talent,

as well as a strong sense of business. In 2002 he moved to San Francisco Bay and he

established his company in Santa Rosa, where he resides with his family. OUR WORK - All our work is hand-made with passion and superior mastery. Going through our

website and pictures' gallery you will see how unique our projects are. They are always

developed with and for our clients, in this way achieving a complete customer satisfaction.

Our Unique designing style is rich with Italian and Mediterranean touches. In the last years

Andrea and his wife Christine led the family owned business toward a more specialized

residential clientele, where the unique designing and coloring styles can be more

appreciated. Since 2008 we are also serving commercial clients, from retail stores to

warehouses, including industrial spaces.

OUR COMMITMENT - Our philosophy is to continually grow the company performing excellent

and unique work and offering a superior customer service. Our dedication to our customers

shows in the details of every project. Our goal is to always exceed our clients' expectations.

Our values of honesty, reliability, great performance and clean look, makes of our company

"one of a kind". All our employees are trained and insured through the State Fund Workers'

Compensation. Over the years we have built a solid reputation based on all these facts.

OUR LOCATION – DelGrosso Design is located in Santa Rosa’s Valley of the Moon, in the heart

of the wine country. We mostly operate in Sonoma, Marin and Napa counties and in the City

of San Francisco. Because of the unicity and quality of our services we are often requested

outside our territory (East Bay, South Bay, Coastal areas of Sonoma and Mendocino Counties,

Lake County). Feel free to inquire with us for projects in these areas, we evaluate each

individual project and will supply a preliminary estimate by email. A Project Information Form is

available at our website “Contact” page.

Contact:

Andy DelGrosso (owner, estimator)

C 707 – 318 – 2705

O 707 – 537 – 8752

eFax 707 – 324 – 8888

CSLB license 864095

email: info@delgrossodesign.com

Copyright DelGrosso Design 2014 – All photographic material in this catalog is property of

DelGrosso Design. Use and reproduction without written authorization are prohibited.

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D i a m o n d P o l i s h e d C e m e n t O v e r l a y

This is among the most beautiful, innovative and durable floors available on the

market. Unlike most classic epoxy terrazzo floors, our product is made with a cement

matrix and does not require use of aggregate. The result is a stunning floor with the

feel and durability of diamond polished concrete and an unmatched mirror

reflectivity. Colors can be completely customized by using integral pigments and

color dyes. Although this floor is engineered for commercial and industrial high traffic

applications, it is now widely requested by homeowners that want to make a

statement with their floor and are looking for a superior performance.

The process – Once the existing structural concrete slab has been properly repaired and

prepared by grinding or shot-blasting, an epoxy ”bond” layer with sand to refusal is applied, zinc or

brass divider are installed to allow proper expansion and contraction of the structural slab, then a 3/8”

(sometime ½”) layer of high strength engineered cement is installed. DelGrosso Design preferred

product is CTS Rapidset TRU Self-leveling Cement, but other products (Ardex SDT, Mapei UltraTop

PC) can be used as matrix if specified by architects. Once the cement is installed, it is diamond ground

and polished to a mirror reflective look. A lower sheen is also possible, whenever requested.

Stenciling – Your floor can be

further customized by adding a logo or

custom wording. The graphics are hand-

made on the floor by using color dyes

and vinyl masking stencils which we

manufacture form a high-def PDF file

provided by client. We can also create

unique designs using saw cut lines and

engraved patterns.

Color selection – Ameripolish makes a line

of integral pigments (OS System) and penetrating dyes

(Surelock Dyes) especially formulated for TRU self-

leveling cement pigmentation. With a combination of this

two coloring products it is possible to completely

customize the look of your floor.

Aggregate – Unlike the classic

commercial grade terrazzo, our floor

does not require the use of stone

aggregate. Nevertheless, it is possible to

add colored glass, reflective glass, quartz

or marble chips with the cement matrix

and create unique and stunning effects.

Durability – The durability of our cement terrazzo floors is extreme. The diamond polished

surface creates one of the most resilient and easy to maintain surface on the market and in time

performs much better than any epoxy or industrial coating on the market.

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Concrete interior floors are becoming nowadays more and more in demand, most of

all on high-end residential settings. Homeowners are often seeking that unique

character that concrete floors offer. No matter what style is your home, we can

create the perfect floor slab to complement your design, modern or classic. Pouring

an interior finished floor slab requires more skills, attention to detailing and planning

than any standard outdoor concrete. It is very important to plan details like concrete

mix design, radiant heat system, finishing technique, size of crew, colors and finishes,

and that’s where DelGrosso Design experience and knowledge come in as

determining factor.

Topping slabs – These are floors

poured on top of existing subfloor, typically a

structural slab or plywood subfloor. Concrete

(unlike cement and engineered cements) needs

a minimum thickness in order to maintain

structural integrity. Whenever possible we

recommend a 2-1/4” thickness over the substrate

highest point. Less than 1-3/4” the topping slab

will lack structural strength, so in these cases the

use of engineered cements is recommended. ¼”

welded wire sheets are always embedded in

topping slabs to increase the strength and

provide structural integrity in case of cracking.

Structural slabs – This type of floor

slabs have to provide a much higher strength

than topping slabs and at the same time

provide an appealing finish. This combination

of factors sometime limits the type of finish

that can be achieved. Often details such as

control joints design and trowel finish are

under looked by companies specializing in

structural concrete, creating issues during the

floor refinishing phase. At DelGrosso Design

we’ll be able to work with your general

contractor, architect and designer to create the

proper mix and procedure for your floor.

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Diamond polished finish – This

finish creates one of the most beautiful and

durable surfaces for concrete floors. The slab is

grinded and polished with special equipment and

by a trained crew. Our diamond polished floors

are unique and completely customized to our

client expectations. When a diamond polished

finish is desired, the floor slab must be poured

following a specific procedure, often unknown to

most concrete contractors. Consult with

DelGrosso Design when planning for a diamond

polished finish.

Control joints – These are grooves in the concrete slab (topping or structural) which create a

point of weakness, allowing the cracks to form into the groove, therefore remaining unseen. On most

interior slabs control joints are saw-cut with diamond blades after the pour. Many concrete installation

company are not familiar with this techniques and often do not install joints of any kind at all, or they

would use grooving tools like is done on standard outdoor concrete. This often creates issues when

the floor is further refinished, most of all with diamond polished floors. Saw-cut joints can be backfilled

with colored caulking or colored polyurea.

Cracking – The appearance of cracks on interior concrete is usually due to lack of control joints

design. Even if the joints are properly designed and installed, hairline cracking can still happen. In this

case they can be backfilled with colored caulking or other elastomeric products during the

refinishing/polishing phase.

Integral Pigments – Whenever a

coloration is desired, integral pigments can be

added to the concrete mix at the plant. Davis

Colors is the main manufacturer in the USA of

integral pigments for concrete. A color chart is

available for our clients; it is also possible to order

3” x 3” color chips directly from the manufacturer.

Samples, chips and charts should not be intended

as a representation of the actual concrete color or

finish, but only as an instrument to determine the

proper pigment to use. The final color will be

determined by the interaction of the pigments with

the specific concrete mix. Factors like aggregate

size and provenance, substrate moisture,

temperature and more can and most likely will

affect the final result.

On site mockups – We highly

recommend the construction on site of

mock-up. Most time the size will be 3’x3’ or

4’x4’. The mock-ups should be used to

preview different colors, finishes, sealers

and other important details. They should be

constructed and maintained on site in

conditions as similar as possible to the

actual floor. In other words, if a mock up is

built outdoor for an interior floor, after weeks

or months of exposure to the outdoor

elements the mock up will develop

differences just because it is in a different

location. Once again, mock ups can only be

so similar to the actual floor, differences are

normally happening on most projects.

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Today polishing is becoming the most finish on commercial floors. This operation

consists of grinding and refining a concrete surface with progressively finer diamond

grit. The diamonds are contained in special "polishing discs" and are embedded into

a metallic, ceramic or resin matrix. During the polishing operation the concrete

surface becomes harder and tighter, creating the most durable finish available on

concrete, in excess of 10,000 PSI.

Since 2010 DelGrosso Design is a Superabrasive (TM) certified floor preparation and

polishing contractor. We are licensed (CSLB 864095) and insured. All our equipment is

designed for industrial polishing and we use only Made in USA and EU high quality

diamonds. DelGrosso Design is a local family owned and run business with a proven

reputation of high quality, honesty and reliability. All our work is performed with

knowledge and professionalism for a long lasting customer satisfaction.

Advantages of polished

concrete

- Extremely durable surface.

- Very low maintenance,

- Easy to clean surface

- Can be done to most existing concrete

- Highly attractive look,

- Completely customized look

- High reflectivity of surface saves 40%

on lighting bills

- Very environmentally friendly.

What can we polish?

Manufacturing plants, Warehouses facilities, Retail

stores, Shopping centers, Offices, Automotive shops,

Showrooms, Garages and Gyms, Department stores,

Groceries stores, Schools and hospitals, Healthcare

facilities, Restaurants, Hotels, Storage facilities.

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Everyday more homeowners are switching to a polished finish for their concrete floors.

Either on a new topping slab or on an old structural slab, the polished finish has a

unique character. Our diamond polishing process merges the old fashioned warmth

and the modern technical progress into an unmatched finish.

Besides durability and ease of cleaning, another advantage of polished concrete is

the complete customization in sheen and color. Extreme decorative features like

stenciled designs, borders and color effects can be added during the polishing

phase. On each project we’ll work with the owners to determine the wanted color

and sheen, the amount of detailing required, define and customize the process to

meet the owner’s needs. Our goal is to exceed the client’s expectations and make a

floor that we can be proud off and the owner wants to show off.

Polished coatings and Self-leveling coatings – Whenever the structural

conditions of the existing floor slab are not suitable for a direct surface polishing (also called “grind &

polish”), an especially engineered high strength cement coating can be applied to the surface and then

polished. This process requires a few additional preparation and refinishing steps, but creates an

incredibly attractive and durable floor.

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H i g h s t r e n g t h c e m e n t o v e r l a y s

Our cement floors are built with a variety of high quality engineered products,

including polymeric modified cement, self leveling cement, high strength cement and

more. Several finishing styles are available, including Troweled finish (light texture),

Sanded finish (smooth texture), Self-level cement finish (light to smooth texture) and

Metallic pigmented epoxy finish (smooth texture, glossy).

Our cement floors can be installed over a multitude of substrates, but mostly

concrete, and ceramic tiles. When a plywood subfloor exists, backer board needs to

be installed for proper bonding and performance. The finished floor thickness normally

varies from 1/16" to ¼”. It is possible to build up where necessary to reach a proper

finish grade.

All our interior floors include installation of protective clear sealer. All our sealers are

VOC compliant (VOC<100). The choice of sealer will affect the final look and sheen of

the floor. The application of sealer insures protection to the color and offers a window

of intervention to clean spills.

Self-leveling cement

topping – This type of floors

creates a beautiful and durable

surface very close in look and feel

to a concrete slab. Once the

substrate is properly prepared, the

self-leveling cement is applied with

special rubber edge trowels in a

thickness of appx 1/8”. Once is

dry, the surface is lightly sanded to

remove trowel marks and leave a

very smooth finish. Since this layer

is quite thin, the floor will still have

the profile of the existing slab, but

it will provide a brand new canvas

for a custom staining and sealing

work. This finish is recommended

for residential and light commercial

spaces. The protective sealer will

require maintenance applications

to maintain in top shape over the

decades to come.

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Staining a concrete slab is one of the most cost effective ways to improve its

appearance, also to create a peculiar look, a marbled finish and antiquing effects. It

is misconception that concrete stains can be used to cheaply restore damaged,

worn or defective concrete. When the concrete surface is sealed, painted,

discolored, worn out, structurally weak, contaminated or has glue on it, the staining

alone will not be a suitable mean of restoration. Additional operations are in this case

necessary prior to staining, like grinding or resurfacing the slab.

Type of Stains - Most water based stains are semi-transparent, when applied to the surface

will penetrate into the concrete through the pores adding a tint. They will not cover existing defects or

discolorations. Some acrylic based stains can be applied in multiple thin layers to cover the entire

surface. These stains are very effective in rejuvenating the concrete appearance, but most likely will

not have a long lasting performance. Acid stains are reactive stains containing diluted muriatic acid,

which will etch the concrete while the pigment penetrates into the slab.

Color selection – Most manufactures

supply a color chart for their lines of products. The

color chart should be used to select the “pigment”,

not as a representation of the final concrete look,

tone or appearance. Many factor such as existing

color of the concrete, color of the aggregate,

composition of the slab, layout, temperature and

other factors will contribute to achieving every

time a unique coloration, often different from what

seen in the color charts. It is highly recommended,

whenever possible to apply the stain (or multiple

stains combination, also called “formula”) in a

sampling area.

Sealer – Stained concrete must be sealed

to prevent accidental staining and

contamination of the surface. The sealer will

also extend the performance of the stain by

protecting the surface from fast wearing. The

frequency depending on the sealer selection,

maintenance applications are normally

necessary to keep the aesthetics to top levels

of performance.

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w i t h C o l o r J u i c e a p p l i c a t i o n

This restoration process on outdoor concrete will produce a look very similar to interior

diamond polished floors. Most times on outdoor projects the final sheen would be

lower than a typical interior diamond polished surface, but the process, as well as the

equipment used, would be in many parts similar on both settings.

The process

Grinding – This operation will level the high spots on the slab removing the top layer of sealants,

cement, color dye, paint, epoxy, stains and dirt previously penetrated into the surface. As we say in the

trade, will “cut” the surface to prepare the concrete for color dye or stain application and sealer

application. The grinding is done with specifically designed planetary floor grinders. These grinders are

electric or propane powered walk-behind machines on which are mounted diamond encrusted metallic

buttons, called “metal bond diamond buttons”. Most grinding is performed with 30 grit buttons. The

grinding is often a very slow process and can easily take days even for smaller size projects. After the

concrete is grinded, the grinding marks (swirl marks) will be removed with 70 and 120 grit diamond

buttons. The grinding process will expose the stone aggregate contained just below the surface.

Sometimes also exposes defects contained into the slab, so a certain amount of repair work is

normally needed on most outdoor concrete slabs.

Sealer – Our sealer of choice is Ameripolish X Link WB (water based, VOC compliant penetrating

sealer). This penetrating product will plug the concrete pores rather than making a thick plastic film

over the concrete, like other sealers do. As the manufacturer explains, the sealer will create “a

window of opportunity that allows cleaning of spills”. In certain situations, when the concrete is

ground to a very smooth finish, this sealer would allow high-speed burnishing. This operation

increases the sheen and strength of the sealer.

Staining – Once the surface is prepared and

cleaned, a color stain can be added to create a

completely customized look. Although other products

are available on the market, our coloring system of

choice is Ameripolish Color Juice. The formulation of

these high quality stains and pigments, in conjunction

with highly skilled craftsmanship, will produce

extremely beautiful and durable results. Most often

we prepare on-site mock-ups and samples to

properly preview the final look. Color Juice stains are

UV stable and will not fade or yellow with time.

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Maintenance – Our Outdoor Grind&Polish concrete is beautiful and very durable. Periodic re-

application of X Link WB sealer is recommended in most situations to maintain the concrete protected

and keep it performing at best. This operation is very cost effective, quick and simple. The resealed

concrete can be open to traffic in as little as 1 hour. The reseal operation should be performed more

often in high traffic settings or when pressure washing is performed multiple times a year.

Expansion joints – Old outdoor concrete slabs often have wooden expansion joints

embedded in it. Most times the wood boards, often 2x4 lumber, are in bad conditions and need to be

removed. The voids left are then backfilled with concrete or other engineered cement products.

Sometimes the layout and design of the wooden control joints makes more difficult achieving good

aesthetical results, and can affect the final look.

Diamond tools –

The quality of the diamond

tools (metal bond buttons,

resin and ceramic bond pads,

brazed pads, buffing pads) is

extremely important. Cheap

diamond tools often are made

with grit that has not been

perfectly screened, and the

quality of the final product will

be affected. They will also last

less or not properly abrade the

surface. We only use high

quality made in USA or Made

in Europe diamond tooling.

DelGrosso Design uses

Superabrasive Lavina grinding

and polishing equipment with

Ermator Dust Control systems.

We are Superabrasive

Certified Floor Refinishing

Contractors.

Personnel – Some operations during a grinding and

polishing project are repetitive and slow. Many phases, though,

are critical and should be performed only by trained personnel.

Each project will offer a generous dose of unforeseen and

challenges, no matter how straight-forward it seems to be. Our

crew is highly trained and able to make decisions on the spot

and is always in contact with our project manager.

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P o l y m e r m o d i f i e d c e m e n t o v e r l a y s

All our resurfacing installations include substrate pressure washing, priming if

necessary, base coating(s), textured and colored top coat, custom staining and

sealer, unless any exclusion is expressly stated in our contracts. Each project is

customized to meet our clients’ specifications and requests. We use only high quality

cements, additives, pigments and sealers. The choice of the materials will largely

depend on the wanted finish and on the existing situation. Additional preparation

steps may be necessary in some cases. Our cement coatings can be installed on

existing “sound concrete” (a concrete structure with no critical structural damage.

Cracks, uplifted or sunken sections of slab can be repaired in some cases prior to

cement coatings installation), clay brick if the bricks are installed with mortar on a

concrete substrate, gypcrete or other engineered cements’. When installing on

plywood or other wood structures, the substrate will need to be prepared with a

waterproofing membrane and/or a layer of cement board. Because of durability and

higher protection, on outdoor overlays we only use high gloss lacquer based sealer.

Texturing styles

Steel Trowel texture – The top

coat of cement is lightly textured by dragging

the trowel on the cement surface. This style

creates a light texturing, suitable for patios,

home entrance, garages and interior floors.

Knock Down texture – The top

coat of cement is lightly textured by tapping

the trowel on the wet cement. This operation

heavily corrugates the surface. The heavy

texture is later sanded down with diamond

pads, leaving a softer texture. This style

resembles the “slate stamping” made on new

concrete slabs but offers better grip in areas

where higher safety is requested, such as

pool decks, hot tub pads, patios exposed to

rain or wet conditions. The sanding process

in combination with the application of color

stain creates a very unique look.

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Stamped Slate – This texturing style

is achieved by stamping with rubber mats the

cement surface before it completely dries. We

use seamless slate stamping mats, on which

the stamping surface is the reverse of the

texture left on the cement. Liquid release

agent is used to allow a streak free removal of

the stamping mat. This style is more labor

intensive than the trowel textured styles, often

is used in combination with flagstone or

ashlar designs.

Flagstone Mosaic – This style

requires the installation of two colored cement

layers. The first layer makes the grout line

between flagstone shapes. The second (top)

layer creates the flagstone shape. Special

high strength tapes are set over the grout

layer to design the stone shapes. After the top

coat is applied, the tapes are pulled,

uncovering the grout layer underneath.

Normally a multiple tones stain is applied by

hand to the individual stone shapes. This

style is very effective on patios, interiors, even

vertical surfaces like walls and columns.

Random Ashlar Designs –

This style is often used to create inlays or

accent areas. As for the “flagstone mosaic”

style, we use high strength nylon tapes (1/4”,

½” and ¾” width) to create a completely

customized “grout lines” design. Normally the

top layer is textured to a “steel trowel”, “knock

down” or “stamped” finish, and an accent

patina is applied. This style is unique to our

company and most requested by client.

Other styles

Cracked Stone – Whenever the

concrete substrate presents heavy cracking,

we incorporate the repaired cracks into a

design made of hand carved score lines. The

cracks now are undistinguishable from other

decorative lines, but the substrate is allowed

to move along the fractured lines. Most often

the score lines are backfilled with colored

caulking for extended durability. Not

recommended for driveways and slabs

subject to heavy loads.

Wavy Lines – A freestyled design is

created by our skilled installers by using a

hand-held grinder equipped with a diamond

blade. This style is very effective most of all

when used in conjunction with multiple colors

stains.

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Stamped is one of the most beautiful finishes for modern concrete. Technologically

advanced tools and materials are allowing a complete customization and long

lasting durability. Stamped concrete is a multi-phase installation that requires a highly

trained crew with proven years of experience. Atmospheric and weather conditions,

as well as micro-ambient conditions often impact the installation of stamped

concrete. Only a small window of time is open for the actual stamping operation,

which only happens when the concrete surface is hard, but not yet completely dry.

Size of the installation crew, amount of square footage per pour and many other

details must be considered when planning for a stamped finish.

Our installation process – After proper grading and substrate compaction, forms are

installed along the perimeter of the concrete slab. On pools and spas Styrofoam profiled forms (mainly we use Stegmeier products) can be anchored on the tiles border for cantilever coping construction. Several shapes are available at customer choice; the most used on pools is the “Sandstone” (round bullnose). Temporary forms are also installed for construction joints, steps and curbs. The concrete is then poured from a concrete delivery truck into a concrete pump and hosed to the pour area. Sometime concrete can be poured directly on the ground from the truck chute (also called “tailgating”). As soon as the concrete is poured it undergoes “screeding” (a rod or wood plank is dragged on the concrete to level it) and “bullfloating” (further flattening of the concrete surface with a large wood or magnesium float mounted on a pole). This last operation also opens the top of the concrete allowing “bleeding” (excess water coming to the surface). The next step is the smoothing of the concrete surface with a Fresno trowel (large trowel mounted on a pole). Once the concrete is set enough, finishers are troweling the surface one more time. The Fresno and the hand troweling will build the “cream”, which is 1/8” thick top layer rich in Portland cement and fine sand. The trowel action also pushes the larger aggregate down below the surface.

Coloring – Color can be mixed at the plant with the concrete and delivered ready-mix to the site

(integral coloration). This method shortens the installation time allowing for larger pours, the cost will largely vary depending on concrete mix features and wanted color. Color can also be added on the wet concrete surface at the moment of the pour (topical coloration, dusting, Hardener/release method). This technique is more labor intensive but offers more control on final coloration; Color Hardener also creates a very hard surface (3500 PSI), with compression strength higher than standard concrete. A combination of integral and topical coloration can be used to create peculiar effects. Finally, color can be added after the pour and after initial curing in a form of stain. This operation is mostly done on colored concrete to create accents or artistic displays. It is also possible to color uncolored standard concrete directly with a stain (semitransparent pigment); this is often done for restoration on older but structurally sound concrete. Our coloring systems are all UV stable and suitable for indoors and outdoors. Construction of on-site mock-ups is recommended whenever a specific color tone is required by customer or architect.

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Stamping patterns/textures – On stamped concrete the texture is imprinted on the

concrete surface by rubber mats with the reverse of the wanted texture. A large variety of stamping mats is available on the market; most commonly we use “Seamless slate”, “Ashlar cobblestone” and “Flagstone”. Seamless stamping mats don’t have a repeating pattern and will only imprint a texture to the concrete. Patterned mats are coming in sets made of 5, 7, 9 or more interlocking mats. Often two or more sets are needed on larger projects to allow proper finishing. In order to allow a streak-free removal of the stamping mat, the concrete surface needs to be covered with “liquid release” agent (transparent) or Antiquing Release (colored powder that creates accent coloration).

Sealing – Stamped concrete must be sealed to protect the color from wearing and most of all from

accidental staining and contamination. Sealed concrete will perform much better over time, maintaining the anticipated beauty for decades. Maintenance recoating is always necessary, the frequency largely depending on type of sealer and usage of the concrete.

Efflorescence – This is a common issue with concrete slabs. Efflorescence is a white powder

that forms on the surface of concrete but also masonry, plaster and brick. This powder is made of mineral salts that are contained into the concrete (or mortar, plaster…) and come to the surface brought by moisture. Bad cases of efflorescence are quite common in slabs exposed to high substrate moisture. Efflorescence usually forms in the first 3-4 weeks after pouring, so it is important not to seal the concrete until all curing is completed. Efflorescence is quite easy to remove, unless it is trapped under a sealant. In this case the sealant must be removed in order to remove the efflorescence, which can be a difficult and costly process.

Cracking – Control joints (grooves or cuts in the concrete) must be installed in order to relief the

expansion and contraction stress to which every slab is subject. Most critical stress points are corners against columns, foundations, pools and other rigid structures. Control joints are points of weakness purposely and specifically created in the slab to allow cracking in non-visible spots. Saw-cut joints are recommended for some finishes (mostly polished concrete) or in slabs where joints must be installed at close distance (4x4, 5x5 grids) or for aesthetical purposes. Typically patterned stamping (ashlar, flagstone…) does not allow for a tight joint design, so more tolerance for cracking should be allowed. The cracking does not create a structural damage if proper reinforcement is installed. Cracks can be easily sealed with colored sanded caulking or similar waterproofing material to prevent moisture penetration and sub sequential corrosion of the steel. On decorative concrete, unlike for structural concrete, even if left unsealed for years hairline cracks will not cause a major failure. Cracks larger than 1/8” are normally considered structural damages and are usually symptom of lack of proper reinforcement or improper installation. An analysis must be made on a case-to-case basis and a certain amount of random cracking is normally tolerated in most concrete flatwork.

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Email us this form filled in to request an estimate. Please attach pictures of the existing

floor area, PDF set of plans with dimensions and other available information.

A PDF copy of this form can be downloaded at our website “Contact” page.

Copyright DelGrosso Design 2014 – All photographic material in this catalog is property of

DelGrosso Design. Use and reproduction without written authorization are prohibited.

DelGrosso Design - (707) 537-8752 - Info@delgrossodesign.com

Contact info

ADDRESS (SITE)

CROSS STREET

HOME PHONE Referred by:

OFFICE PHONE

FAX

CELLULAR Email:

Project Type

Commercial Residential Public/Government

Existing substrate/floor

No structural substrate Concrete slab Plywood subfloor

Existing cover (tiles, carpet, concrete, VCT..)

Substrate structural condition:excellent good needs repair poor

Wanted Finish - Other specs

Grind&Polish 800 grit (diamond polished finish) ….……. Existing control joints are tooled

Cream polish (only on smooth, clean slabs) ……………. No control joints

Honed finish 100 grit (low sheen) …………………………

Mirror sheen 3500 grit (highest sheen) ………………….. Baseboard is removable

Cement terrazzo (1/2" diamond polished overlay) ……... Walls are painted

Stain&seal …………………………………………...…….. Walls are stucco

Cement overlay …………………………….………………. Area accessible only though stairs

Outdoor Grind&polish system (with Color Juice) ……….

Stamped concrete …………………………………………. Existing concrete has integral color

Outdoor Resurfacing ………………………………………. Existing concrete is stained

Other requests/specs

Project description

PROJECT INFORMATION SHEET