No warranty and no approval

in case of non-compliance

Terrace Profi lesInstallation Instructions terraza bz.

Version 07 / 2017

Up-to-date instal-lation instructions and drawings:www.werzalit.com

OriginalTheOriginalThe

MADE IN GERMAN

Y

Qual

ity since 1923

Contents

P. 3 1. Approval subject and area of application

1.1 Area of application1.2 Laying variants1.3 Expansion1.4 Ventilation1.5 Cutting/processing1.6 Disposal

P. 4 2. Provisions for construction products

2.1 Sub-framework bar2.2 Fasteners2.3 Structural stability

P. 5 3. Provisions for the installation

3.1 Provisions for the installing companies3.2 Installation and fastening of the terrace profiles3.3 Incline3.4 Conformity confirmation3.5 Maintenance and cleaning3.6 Changes in colour3.7 Provisions for use, care, maintenance and

condition monitoring

P. 6 4. Shape and dimension changes due to climatic influences

4.1 Longitudinal elongation4.2 Lifting up of the profile ends4.3 Change of the coverage width

(and therefore reduction of the joint width)4.4 Flaring of the groove lips4.5 Puddle formation

P. 7 5. System diagram

5.1 System diagram, here as flooring on steel or aluminium substructure with sub-framework bar bz

P. 8 – 11 6. Installation

6.1 Installation of the terraza bz terrace profiles on a wood substructure

6.2 Installation of the terraza bz terrace profiles on a steel or aluminium substructure with SF bar bz

6.3 Fixed bearing SF bar bz6.4 Floating bearing SF bar bz

terraza bz

2017German technical

approvalCert. No.

Z-10.9-434

2

terraza bz Approval subject and area of application

1.Approval subject and area of application

1.1Area of application

1.2Laying variants

1.3Expansion

1.4Ventilation

1.5Cutting / processing

1.6Disposal

The terraza bz terrace profiles may be used as load-transferring profiles as flooring for

• balconies• standing platforms• roof terraces• access balconies• loggias• or similar

according to the standard DIN 1991-1-1/NA1, Table 6, category Z, T1, T2; in other words the following limits must be complied with for loads perpendicular to the surface:

• maximum area-based load qk = 5.0 kN/m2

• maximum point load Qk = 2.0 kN on a minimum area of 5 x 5 cm.

They are laid as multi-span beams on a substructure of wood, steel or aluminium and installed such that they are visible and can be replaced at any time. For steel or aluminium substructures, the “SF bar” should be used as support. The terrace profiles are installed both inside buildings and outdoors. The profiles are used only for transferring the sustained traffic loads to the substructure. They do not contribute to stabilisation of the substructure or to stabilisation or reinforcement of the building or structure. The load-bearing substructure of the terrace profiles is not a subject of the present national technical approval. The terrace profiles have normal flammability.

Fluctuations in temperature and moisture levels cause the terraza bz profiles to expand and contract in their length, width and thickness dimensions. see Figure

The profiles expand by max. 6 mm/linear m of profile length or profile width. This must be taken into account during laying by leaving corresponding expansion joints of 3 mm/linear m on all sides. Failure to leave expansion joints can result in stresses that could lead to warping or buckling of the flooring. see Figure

The entire flooring incl. cavities must have good ventilation. An expansion / ventilation joint of at least 20 mm must be maintained toward the house wall.

The terraza bz profiles, sub-framework bars bz, etc. can be sawn, milled or drilled with all typical woodworking tools. A wood bol-ster must always be used for tapping the profiles into place during installation.

We strongly recommend against installing the terraza bz profiles at temperatures below 5 °C due to the risk of hairline cracks forming. These may only become visible after exposure to weather for some time.

Waste pieces (cutting waste) can be disposed of as household or commercial waste. Larger quantities should be disposed of as bulky refuse or at a recycling depot.

Laying with approx. 5 mm click joint = coverage width approx. 150 +0

-2 mmCoverage width up to max. 6 m possible!!!

Laying with approx. 10 mm click joint = coverage width approx. 155 +0

-2 mmCoverage width over 6 m required!!!

149.5 149.5 154.5 154.5

terraza bz profiles within the framework of the national technical approval

Approval number: Z-10.9-434Approval subject: terraza bz terrace profiles

Sub-framework bar bzTerrace profiles of wood-polymer composite

3

terraza bz Provisions for construction products

2.Provisions for construction products

General informationThe terraza bz terrace profiles and the sub-framework bars bz must satisfy the special provisions and appendices of this decision as well as the documents filed with the German Institute for Construction Technology (Deutsches Institut für Bautechnik).

The terraza bz terrace profiles must satisfy the fire behaviour requirements of class E according to DIN EN 13501-1.

2.1Sub-framework bar

2.2Fasteners

2.3Structural stability

The non-load-bearing sub-framework bar (SF bar) bz must consist of the wood-polymer composite according to the documents filed with the German Institute for Construction Technology (Deutsches Institut für Bautechnik).

The SF bar bz must satisfy the fire behaviour requirements of class E according to DIN EN 13501-1.

To fasten the terraza bz terrace profiles to the non-load-bearing SF bar bz or load-bearing wood substructure (see section 6.1), only pan head screws 4.0 x 40 mm and countersunk screws 4.0 x 60 mm (screws with conformity mark or CE mark as wood fastener) of stainless steel, strength class 50, with national technical approval may be used. Restraint stresses must be compensated for with design measures.

The “SF bar” must rest on a load-bearing steel or aluminium substructure. Only M8 screw fasteners that are regulated or have national technical approval (structural steel fasteners with conformity mark or CE mark) of stainless steel, strength class 70, may be used for fastening the “SF bar” to the steel or aluminium substructure. The detailed layouts on pages 8 and 9 must be complied with. The verification of the fastening of the “SF bar” to the substructure is not a subject of the national technical approval.

The installation of the terrace profiles “terraza bz“ and “SF bars“ must take place according to the national technical approval. The provisions for the execution (see section 3) must be taken into consideration. The structural stability of the terrace profiles “terraza bz“ is verified for traffic loads if the following conditions are met:

• In addition to their end supports, the terrace profiles are situated atop at least one intermediate support (structural system: at least two-span system).

• The support spacing (centre-to-centre distance) of the substructure is no greater than 450 mm or 400 mm with increased wind load.• The support width of the substructure is at least 70 mm.• The flooring perpendicular to the span direction of the terrace profiles consists of at least three profiles.• For the maximum support spacing (centre-to-centre distance) of 450 mm, the peak dynamic pressure qp according to

DIN EN 1991-1-44 resp. DIN EN 1991-1-4/NA5 is max. 1.25 kN/m2. For the peak dynamic pressure qp = 1.40 kN/m2 according to DIN EN 1991-1-44 resp. DIN EN 1991-1-4/NA5, the maximum support spacing (centre-to-centre distance) of the substructure is 400 mm.

• The characteristic snow load on the floor sk according to DIN EN 1991-1-36 resp. DIN EN 1991-1-3/NA7 is no more than 9.36 kN/m2.• Snow drifts do not form.

The structural stability of the load-bearing substructure of wood, steel or aluminium must be verified for each individual case. The verification is not a subject of the present national technical approval.

4

terraza bz Provisions for the installation

3.Provisions for the installation

3.1Provisions for the installing companies

3.2Installation and fastening of the terrace profiles

3.3Incline

3.4Conformity confirmation

3.5Maintenance and cleaning

3.6Changes in colour

3.7Provisions for use, care, maintenance and condition monitoring

The terrace profiles must be installed according to the following provisions and according to the information in the sections 5.1, 6.1, 6.2 as well as in consideration of the planning principles. They may only be laid and installed by companies that have the necessary experience.The applicant must inform the installing companies that they may only assemble and install the terrace profiles according to the requirements of the applicant (see installation instructions) and according to the provisions of the national technical approval.

The terraza bz terrace profiles are fastened together via a tongue and groove connection and affixed to the load-bearing wood substructure or the non-load-bearing SF bars bz, which are in turn screwed to the load-bearing steel substructure. The minimum support width of the end and intermediate supports as well as the minimum number of screws per support as specified in sections 6.1, 6.2 must be complied with. Only terrace profiles with full cross-section may be installed; cutting along the profile length is not permitted, except for creating starting and end profiles.The load-bearing substructure must consist of wood, steel or aluminium. The wood substructures must consist of coniferous wood of at least strength class C 24 according to DIN EN 3388 (grade S 10 according to DIN 4074-19) or deciduous wood of at least strength class D 30 according to DIN EN 338 (grade LS 10 according to DIN 4074-510).For steel or aluminium substructures, the SF bar bz as support for the terraza bz terrace profiles must be affixed with a full-surface connection to the steel or aluminium profile in accordance with section 6.2.If a risk of falls exists, upright safety elements (e.g. railings) must be provided independently of the terrace profiles that guarantee additional protection against shifting of the terrace profiles.Damaged terrace profiles may not be installed. Drilling holes or creating openings in the terrace profiles is essentially not permitted, except for the holes for necessary fastening work.

The terrace profiles “terraza bz“ may be laid in the span direction (the profile lengthwise direction) with an incline of up to 2 %; an incline of at least 1.5 % must be maintained to divert rainwater.

The companies that install the terrace profiles must issue a conformity confirmation for each construction project by which they certify that the terrace profiles installed by them comply with the provisions of the national technical approval. This declaration must be submitted to the building developer in every instance and included by him in the building file.

The terrace profiles may not come into contact with any substances or materials that would damage the terrace profiles. They may only be sealed with the surface protection layer “Werzalit Universal Oil”. Additional coats of paint, other coatings or sealants may not be applied. The terrace profiles may only be cleaned with water containing additives (such as stain removal spray, power grease remover, etc.) that are not harmful to the wood-polymer composite.

Within the scope of the condition monitoring by the building developer, the external condition and fastening of the terrace profiles must be checked regularly. If damage is discovered, an appropriately authorised expert must be consulted in coordination with the applicant. The requirements of section 3.1 apply accordingly to maintenance and repair work. Damaged terrace profiles must be replaced. The building developer must be explicitly informed of these provisions by the installing company.

The terraza bz profiles are dye penetrated and fade naturally over the course of time without losing the basic character of their colour.

As these are wood-based products, colour variations over time, caused by UV rays and moisture, are natural and to be expected. In particular, a natural lightening of the profiles may occur in the initial weeks and months (depending on weather conditions), but this does not represent a defect. Colour fluctuations within a profile or a batch are natural and highlight the natural character of wood.

The requirements of section 3.1 apply accordingly to maintenance and repair work. Damaged terrace profiles must be replaced.

☛ Water spots in the transition area of weathered and partially sheltered terrace surfacesWater spots occur due to lignin, a natural constituent of wood that can be washed out under exposure to rain. They can generally be removed with large amounts of clean water and typical household cleaning tools. This effect is minor on surfaces exposed to heavy sunlight or completely rinsed off by rainwater. These water spots do not impair the quality of the terraza bz profiles and do not represent a defect.

5

terraza bz Shape and dimension changes due to climatic influences

4.3Change of coverage width (and therefore reduction of the joint width)

4.4Flaring of the groove lips

4.2Lifting up of the profile ends

4.5Puddle formation

The coverage width of the profile (see figure for measurement) may be as large as 148 mm. This results in complete closure of the joint between the profiles if they were initially laid with a 5 mm click joint.

see Figure 3

If a straight edge is placed across the width of a profile, a gap of max. 2.5 mm may arise at the location marked in the figure.

see Figure 4

If a measuring stick with a length of 1 m is placed at the location with the most pronounced flaring, the largest permissible gap between the profile and the measuring stick is 8 mm.

see Figure 2

If the profile grade is properly maintained in the longitudinal direction (1.5 – 2 %), all precipitation will quickly flow off the terrace. The profiles dry quickly and evenly.

Nevertheless, the shape changes described here can result over time in local puddle formation. In these places, it will take somewhat longer for the surface to dry. Local puddle formation is not a defect as long as the shape changes remain within the limits specified above.

Figure 3

Figure 4

144.5

Figure 2

4.Shape and dimension changes due to climatic influences

terraza bz profiles consist of the high-quality S2 wood-polymer composite. As with every wood product, this material also reacts to climatic influences in the form of temperature and moisture fluctuations. These affect the dimensions and shape of the product.

Both the product design and the detailed installation instructions were developed to ensure that the product can be used without impairment despite shape and dimension changes to the wood-based material.

Changes to the shape primarily involve the properties of longitudinal elongation, lifting up of the profile ends, changing of the coverage width (and therefore reduction of the joint widths) and a slight flaring of the groove lips. Within the limits described here, changes to the specified properties are considered normal behaviour of the S2 wood-polymer composite and do not represent defects.

4.1Longitudinal elongation

If a measuring stick with a length of 1 m is placed at the location with the longest elongation, the largest permissible gap between the profile and the measuring stick is 8 mm.

see Figure 1

Figure 1

6

terraza bz System diagram

5.System diagram

5.1System diagram here as flooring on steel or aluminium substructure with sub-framework bar bz

• The orientation of the terraza bz profile (top / bottom side – fine / course grooves) can be freely selected.

1

2

3

4

1 terraza bz starting profile2 terraza bz profile3 terraza bz end profile4 Steel or aluminium substructure with WPC SF bar bz

7

The following conditions must be complied with when laying the floor profiles “terraza bz”:(See also section 2.3 “Verification of structural stability” and the construction description)

• Centre-to-centre distance of the maximum support spacing of the wood structure: 400 mm or 450 mm according to section 3.1 of the approval

• Support width ≥ 70 mm• Maximum edge overhang 100 mm• Surrounding minimum joint width to wall connections, posts, etc. ≥ 20 mm• Hidden fastening in the groove at the intermediate support: one pan head screw 4.0 x 40 mm; the screw must be centred to

the support• Hidden fastening in the groove at the end supports: two pan head screws 4.0 x 40 mm per support; spacing between the

screws: 50 mm, symmetrically to the width of the support• Visible screw connection of the starting and end profiles: one countersunk screw 4.0 x 60 mm per support; the screw must be

centred to the support• Wood fastening materials (screws) according to section 2.2 of the approval• The strength class of the wood substructure must satisfy the requirements of section 3.2.• The maximum profile length for wood substructures is 4000 mm.• Joint width in case of wood substructures 10 mm• Incline of at least 1.5 % up to max. 2 %

terraza bz Installation

6.Installation

Floor profile “terraza bz“

End support

Wood substructure

Intermediate support

6.1Installation of the terraza bz terrace profiles on a wood substructure

8

The following conditions must be complied with when laying the floor profiles “terraza bz”:(See also section 2.3 “Verification of structural stability” and the construction description)

• The layout of the floating and fixed bearings must correspond to section 6.3; the maximum centre-to-centre distance of the bearings is 500 mm.

• Each “SF bar” must be fastened without restraining forces. One support must be installed as a fixed bearing and all other supports as floating bearings.

• The floating bearings must be installed such that the “SF bars” can move away from the fixed bearing.

terraza bz Installation

6.2Installation of the terraza bz terrace profiles on a steel or aluminium substructure with SF bar bz

max. 500mm

Floor profile “terraza bz“

“SF bar”

Fastening of the "SF bar“ as floating or fixed bearing

Steel or aluminium substructure

9

terraza bz Installation

Please note:• Maximum production length of the sub-framework bars 4000 mm.• For areas larger than 4 m butt joints between SF bars of 20 mm.• 2 fixed resp. floating bearings must be positioned at the joints.• SF bars have to be laid in a staggered arrangement.

6.2.1Areas larger than 4 m in width

6.3Fixed and floating bearing SF bar bz

8.5

8.5

Expansion joint

The steel plate and M8 hex head screw with washer and nut must be made of stainless steel.The fastening to the steel or aluminium substructure is not a subject of the national technical approval.

View A

Floating bearing Fixed bearing

Sectional view AA

View A

Steel plate

Fasteners according to section 2.2

Distance of the bearings

Steel plate

View A

8.5

10

terraza bz Installation

6.4Example Wall connections

terraza bz

Angle bracket

max. 100 mm

at least 20 mm

terraza bz

30 mm

Wall connection profile

at least 20 mm up to max. 30 mm

max. 100 mm

11

Nr.

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20 9

61/0

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