introduction - spray foam 1 session 1...if coating is thin: take additional slits in a 5’ radius...
TRANSCRIPT
INTRODUCTION
Inspection Procedures
oInitial
Inspection Report
Visual Inspection
Physical Sampling (Core and Slit Samples)
ROOF INSPECTION PROCEDURES
Occurs upon project
completion
Includes visual observation
and physical sampling
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
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.
PROJECT INFORMATION
ROOF SKETCH
The Roof Sketch shall include the following:
Initial Diagram
Visual Findings
Physical Sampling
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.
INITIAL ROOF DIAGRAM EXAMPLE
VISUAL OBSERVATIONS
DELAMINATED SUBSTRATE
SPRAY POLYURETHANE FOAM
COATING
FOAM CRACK CAUSED BY BUILDING SETTLEMENT
FOAM CRACK
FOAM CRACK AT ROOF EDGE
VISUAL INSPECTION
VISUAL INSPECTION - FOAM
FOAM BLISTERS
WET FOAM
PINHOLES
SOFT FOAM
EXPOSED FOAM
SEPARATION FROM FLASHINGS
MECHANICAL DAMAGE
BIRD DAMAGE
PONDING WATER
FOAM BLISTER
RUPTURED FOAM BLISTER
FOAM BLISTERS
WET FOAM AND PINHOLES
CHECK FOR SOFT FOAM THUMB TEST
EXPOSED FOAM
TREEBARK AND POPCORN FOAM TEXTURE
IMPROPER REPAIRS AND EXPOSED FOAM
EXPOSED FOAM
FOAM SEPARATED FROM GRAVEL STOP
IMPROPER DETAIL
IMPROPER DETAIL
MECHANICAL DAMAGE
MECHANICAL DAMAGE
BIRD DAMAGE
PONDING
COATING
VISUAL INSPECTION COATING
COATING BLISTERS
POOR COATING ADHESION
COATING CRACKS
COATING RUNS
PINHOLES
POOR COATING ADHESION
PINHOLES
POOR ACRYLIC COATING ADHESION
THIN COATING/EXPOSED FOAM
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.
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
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
CORE SAMPLES
–OTHER OBSERVATIONS
SOFT/SPONGY FOAM
MOISTURE
UV DEGRADATION
BETWEEN LIFTS
DIFFERENCE IN COLOR OF LIFTS
COATING OR OTHER MATERIALS
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)
MEASURE CORE
WEIGH CORE SAMPLE
COMPRESSIVE STRENGTH TESTING
CORE TEST RESULTS
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
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
2” TO 3”
¾"
SLIT SAMPLE
MEASURE FOAM THICKNESS
OPTICAL COMPARATOR AND SLIT
DEGRADATION OF FOAM
SLIT AT BLISTER
ROOF SKETCH INFORMATION
–PHYSICAL SAMPLING LOCATIONS
•LOCATE CORE SAMPLE LOCATIONS ON ROOF SKETCH
•LOCATE SLIT SAMPLE LOCATIONS ON ROOF SKETCH
SLIT SAMPLE REPORTING
FINAL ROOF SKETCH
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
GOOD WORKMANSHIP
QUESTIONS