introduction - spray foam 1 session 1...if coating is thin: take additional slits in a 5’ radius...

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