INTRODUCTION - Spray Foam 1 Session 1...IF COATING IS THIN: TAKE ADDITIONAL SLITS IN A 5’ RADIUS...
Transcript of INTRODUCTION - Spray Foam 1 Session 1...IF COATING IS THIN: TAKE ADDITIONAL SLITS IN A 5’ RADIUS...
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INTRODUCTION
Inspection Procedures
oInitial
Inspection Report
Visual Inspection
Physical Sampling (Core and Slit Samples)
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ROOF INSPECTION PROCEDURES
Occurs upon project
completion
Includes visual observation
and physical sampling
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PROJECT INFORMATION
The following documents are to
submitted with request for inspection
1. Project specific specifications
2. SPF and Coating product
manufacturer’s installation
requirements
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ROOF INSPECTION
The objective of the roof inspection
is to determine the individual
applicator’s ability to apply SPF as
required by the individual project
specifications and/or manufacturers
requirements.
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PROJECT INFORMATION
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ROOF SKETCH
The Roof Sketch shall include the following:
Initial Diagram
Visual Findings
Physical Sampling
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INITIAL ROOF DIAGRAM
Initial diagram of roof
oArrow indicating DUE NORTH
oArrows indicating slope
oDetails : edges, expansion joints, etc.
oPenetrations : drains, pipes, HVAC equip,
skylights, etc.
oTake photos and note on drawing
w/arrow.
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INITIAL ROOF DIAGRAM EXAMPLE
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VISUAL OBSERVATIONS
DELAMINATED SUBSTRATE
SPRAY POLYURETHANE FOAM
COATING
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FOAM CRACK CAUSED BY BUILDING SETTLEMENT
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FOAM CRACK
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FOAM CRACK AT ROOF EDGE
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VISUAL INSPECTION
VISUAL INSPECTION - FOAM
FOAM BLISTERS
WET FOAM
PINHOLES
SOFT FOAM
EXPOSED FOAM
SEPARATION FROM FLASHINGS
MECHANICAL DAMAGE
BIRD DAMAGE
PONDING WATER
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FOAM BLISTER
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RUPTURED FOAM BLISTER
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FOAM BLISTERS
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WET FOAM AND PINHOLES
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CHECK FOR SOFT FOAM THUMB TEST
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EXPOSED FOAM
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TREEBARK AND POPCORN FOAM TEXTURE
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IMPROPER REPAIRS AND EXPOSED FOAM
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EXPOSED FOAM
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FOAM SEPARATED FROM GRAVEL STOP
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IMPROPER DETAIL
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IMPROPER DETAIL
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MECHANICAL DAMAGE
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MECHANICAL DAMAGE
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BIRD DAMAGE
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PONDING
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COATING
VISUAL INSPECTION COATING
COATING BLISTERS
POOR COATING ADHESION
COATING CRACKS
COATING RUNS
PINHOLES
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POOR COATING ADHESION
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PINHOLES
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POOR ACRYLIC COATING ADHESION
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THIN COATING/EXPOSED FOAM
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PHYSICAL SAMPLING involves destructive investigation and is necessary to ensure that the spray polyurethane foam roofing system has been applied according to the project and/or manufacturer’s specification.
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PHYSICAL SAMPLING
CORE SAMPLES
MIN 2 PER ROOF UP TO 10,000 SQ. FT. AND 1 CORE FOR EACH 10,000 SQUARE FEET OVER 10,000 SQ. FT.
USE APPROPRIATE CORING DEVICE
2” DIAMETER MINIMUM
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CORE SAMPLES
CORE SAMPLES
MEASURE TOTAL FOAM THICKNESS
EXAMINE FOR:
NUMBER OF LIFTS
THICKNESS OF LIFTS
ADHESION
SUBSTRATE TO FOAM
FOAM TO FOAM
FOAM TO COATING
COATING TO COATING
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CORE SAMPLES
–OTHER OBSERVATIONS
SOFT/SPONGY FOAM
MOISTURE
UV DEGRADATION
BETWEEN LIFTS
DIFFERENCE IN COLOR OF LIFTS
COATING OR OTHER MATERIALS
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CORE TESTING
Cores will be measured and weighed to determine the unit weight in accordance with ASTM D1621. Unit weight will be reported in pounds per cubic foot (pcf)
Cores will be measured and tested in compression in accordance with ASTM D1622. The compressive strength of the cores will be reported in pounds per square inch (psi)
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MEASURE CORE
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WEIGH CORE SAMPLE
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COMPRESSIVE STRENGTH TESTING
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CORE TEST RESULTS
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SLIT SAMPLES
– SLIT SAMPLES
•OBTAIN SAMPLES FROM THE FOLLOWING: – FIELD OF THE ROOF
– PASS LINES
– PARAPET WALL/ROOF EDGE (AT LEAST ONE SAMPLE)
– DEFECTS
•MINIMUM 3 PER 10,000 SQ. FT. •SIZE –1/2” WIDE –2-3” LENGTH –3/4” DEPTH
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SLIT SAMPLE
EXAMINE SLITS IMMEDIATELY FOR COATING THICKNESS
IF COATING IS THIN: TAKE ADDITIONAL SLITS IN A 5’ RADIUS IN ALL 4 DIRECTIONS
IF STILL THIN, ADDITIONAL SLITS IN A 10’ RADIUS OR UNTIL ADEQUATE COATING THICKNESS IS FOUND
MEASURE TOTAL FOAM DEPTH
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2” TO 3”
¾"
SLIT SAMPLE
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MEASURE FOAM THICKNESS
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OPTICAL COMPARATOR AND SLIT
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DEGRADATION OF FOAM
SLIT AT BLISTER
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ROOF SKETCH INFORMATION
–PHYSICAL SAMPLING LOCATIONS
•LOCATE CORE SAMPLE LOCATIONS ON ROOF SKETCH
•LOCATE SLIT SAMPLE LOCATIONS ON ROOF SKETCH
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SLIT SAMPLE REPORTING
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FINAL ROOF SKETCH
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REPORT
The final report will typically include the following:
Project Information – Name and Location
Materials Information – Manufacturer’s material
numbers and lot numbers
Deviations observed during inspection
Core and Slit sample information
Drawing
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GOOD WORKMANSHIP
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QUESTIONS