SPRAYFOAM Professional - Summer 2017 - 41

ASK THE EXPERT

S

PFA gets calls regularly from customers, designers, architects and others looking for straight answers to their questions
on SPF. Our panel of experts recently addressed this topic:

Q

uestion?

WHAT IS THE BEST WAY
TO ENSURE I AM SPRAYING
QUALITY FOAM?

DEVELOPED BY SPFA'S CONSULTANT COMMITTEE

I

have a saying when inspecting SPF applications, "The
Foam Never Lies."
Beyond the obvious steps such as, ensuring equipment,
climate, substrate, foam, and design is right, the single
best way to ensure quality foam is to take quality control
samples. From a sample, you can identify potential issues
before they become a problem:
Check for:
* Irregular cell structure, blowholes, fissures, voids, gaps, etc.
* Color variations within the foam
* Poor adhesion both substrate and interlaminar
* Lift thickness (closed cell foam)
* Poor compressive strength (closed cell foam)
* Evidence of excessive exothermic heat (dark colored or
scorched foam in center, blowholes, soft foam in the
middle lifts, etc.
* Off ratio or poor mix (soft & gummy or hard & brittle)
* Excessive odor
* Proper density
The first quality control sample should be obtained
before applying the foam to the substrate (when setting
the pattern). Then, take a sample periodically during application, when/if climate or substrate conditions change
or when starting up again after a short term shut down.
Be sure not to spray too much before taking a sample

Tools:
Saws
Knives
Core tools
Optical comparator
Scale (for density measurements)
Procedures for quality control sampling.
* Obtain a representative sample from each assembly
* Sample should be at least 2-3 inches in diameter and
include all lifts of foam from the top to the bottom
* Cut off the top and bottom skin and measure density in
the core
* Use the thumb test on closed cell foam to determine relative compressive strength (a 2 pcf (pounds per cubic foot)
should compress about 10% with firm pressure. Take a
measurement both perpendicular and parallel to rise
* Record findings on daily job report
The SPFA Consultant Committee is comprised of many
professionals from different walks of the SPF world. hey
benefit from your input, and use it to craft future guidance
on issues important to you, the SPF professional. If you
have feedback, or even better, questions related to this or
another SPF issue, please send an email to info@sprayfoam.
org for them to consider! Make the subject line: Consultant
Committee Question. o
*
*
*
*
*

Core Samples

Measuring Density

www.sprayfoam.org

Field Compression
Tester

| SPRAYFOAM PROFESSIONAL 41


http://www.sprayfoam.org

Table of Contents for the Digital Edition of SPRAYFOAM Professional - Summer 2017

Sprayfoam 2017 Wrap Up
How SPF and Hvac Contractors Should Work Together
Bringing Spray Foam to Social Media
2017 SPFA Contractor Awards
California STSC Announces Next Regulatory Stage for SPF
Engaged Employees Make or Break Your Business
Ask the Expert
Executive Director’s Corner
President’s Post
Foam Business News
SPFA Today – Membership News & Numbers
Legislative Update
Calendar of Events
Index of Advertisers | Advertisers.com
SPRAYFOAM Professional - Summer 2017 - Intro
SPRAYFOAM Professional - Summer 2017 - cover1
SPRAYFOAM Professional - Summer 2017 - cover2
SPRAYFOAM Professional - Summer 2017 - 3
SPRAYFOAM Professional - Summer 2017 - 4
SPRAYFOAM Professional - Summer 2017 - 5
SPRAYFOAM Professional - Summer 2017 - 6
SPRAYFOAM Professional - Summer 2017 - Executive Director’s Corner
SPRAYFOAM Professional - Summer 2017 - 8
SPRAYFOAM Professional - Summer 2017 - President’s Post
SPRAYFOAM Professional - Summer 2017 - 10
SPRAYFOAM Professional - Summer 2017 - 11
SPRAYFOAM Professional - Summer 2017 - Foam Business News
SPRAYFOAM Professional - Summer 2017 - 13
SPRAYFOAM Professional - Summer 2017 - SPFA Today – Membership News & Numbers
SPRAYFOAM Professional - Summer 2017 - 15
SPRAYFOAM Professional - Summer 2017 - Sprayfoam 2017 Wrap Up
SPRAYFOAM Professional - Summer 2017 - 17
SPRAYFOAM Professional - Summer 2017 - 18
SPRAYFOAM Professional - Summer 2017 - 19
SPRAYFOAM Professional - Summer 2017 - Legislative Update
SPRAYFOAM Professional - Summer 2017 - 21
SPRAYFOAM Professional - Summer 2017 - 22
SPRAYFOAM Professional - Summer 2017 - 23
SPRAYFOAM Professional - Summer 2017 - How SPF and Hvac Contractors Should Work Together
SPRAYFOAM Professional - Summer 2017 - 25
SPRAYFOAM Professional - Summer 2017 - 26
SPRAYFOAM Professional - Summer 2017 - 27
SPRAYFOAM Professional - Summer 2017 - 28
SPRAYFOAM Professional - Summer 2017 - 29
SPRAYFOAM Professional - Summer 2017 - 30
SPRAYFOAM Professional - Summer 2017 - Bringing Spray Foam to Social Media
SPRAYFOAM Professional - Summer 2017 - 32
SPRAYFOAM Professional - Summer 2017 - 33
SPRAYFOAM Professional - Summer 2017 - 2017 SPFA Contractor Awards
SPRAYFOAM Professional - Summer 2017 - 35
SPRAYFOAM Professional - Summer 2017 - 36
SPRAYFOAM Professional - Summer 2017 - 37
SPRAYFOAM Professional - Summer 2017 - California STSC Announces Next Regulatory Stage for SPF
SPRAYFOAM Professional - Summer 2017 - Engaged Employees Make or Break Your Business
SPRAYFOAM Professional - Summer 2017 - 40
SPRAYFOAM Professional - Summer 2017 - Ask the Expert
SPRAYFOAM Professional - Summer 2017 - Index of Advertisers | Advertisers.com
SPRAYFOAM Professional - Summer 2017 - cover3
SPRAYFOAM Professional - Summer 2017 - cover4
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