SPRAYFOAM Professional - Fall 2017 - 43

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 TOOLS SHOULD I HAVE
TO OBSERVE A QUALITY
SPRAY FOAM APPLICATION
AND HOW DO I USE THEM?

DEVELOPED BY SPFA'S CONSULTANT COMMITTEE

C

oincidentally, the same tools
consultants use to inspect spray
foam applications are the same tools
a contractor can use to ensure quality
applications:
* Pocket weather meter
* Pin-type moisture meter
* Sample extractions tools; coring tool,
knives, saws, prybar
* Laser thermometer
* Scale capable of reading fractions
of grams
* Clear container that reads in milliliters
* Optical comparator
* Field compression tester
* Thermal imaging camera
* Ruler, tape measure or caliper measurement device
* Sharp knife to cut foam
* Camera
Before application, measure the
ambient temperature and humidity of
the spray area. The best tool for that
measuring is a pocket weather meter,
such as the meters manufactured by
Kestrel or Speedtech. The device can
measure temperature, humidity, dew
point, heat stress index and even wind
speed. A smartphone may be able to
show the measurements for the area of
the application as well.
It is also necessary to verify the
temperature, surface condition (dry surface, clean, sound) and an idea of the
moisture content within the substrate
material that may impact the application. Temperature of the substrate can
be measured with a laser thermometer

available at most hardware stores. The
laser thermometer can also measure
the temperature of the foam drums so
we know the temperature of the liquid components before entering the
proportioner.
The moisture content is measured
with a moisture meter. We prefer the pin
type moisture meter that has extensions
that can be driven into the substrate to
let us know the moisture content of the
substrate at different levels. For example, a wood decking or concrete block
may be wet on the outside but dry on the
inside surface, allowing spray foam to
be applied. There are more than a dozen
brands, including Delmhorst, Amprobe,
CEM, Protimeter, Wagner and more.
During and after the application, we
want to take quality control samples and
inspect and record the results for the
foam of the following items:
* Adhesion
* Density
* Cell structure
* Compressive strength
(closed cell SPF)

*
*
*
*
*
*
*
*

Anomalies
Voids, gaps and omissions
Color
Foam profile (cross-sectional)
Cell structure consistency
Knit-line adhesion
Off-ratio foam: stickiness or brittleness
Odor
Note: Refer to SPFA's Guidance on
Sampling Techniques for the Inspection
of Spray Polyurethane Foam Section 5:
Onsite Qualitative Examination.
Adhesion can be measured subjectively by how much force it takes to
crack the sample loose from the substrate using a coring tool or a saw/
knife and pry bar. Normally adhesion
will exceed the strength of the foam,
and typically the foam mass will break
before the part that is bonded to the
substrate breaks.
Density of closed cell SPF is measured
by using the water displacement method

1st row: Thermal imaging
camera, laser thermometer,
moisture meter.
2nd row: pocket weather meter,
knives, optical comparator,
coring tool, drywall saw.
3rd row: scale, clear container
that reads in milliliters, prybar,
field compression tester.
www.sprayfoam.org

| SPRAYFOAM PROFESSIONAL 43


http://www.sprayfoam.org

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

Executive Director’s Corner
President’s Post
Foam Business News
Spfa Today – Membership News & Numbers
Legislative Update
Verdical Group’s 4th Annual Net Zero 2017 Conference: Energy + Water + Waste
An Expanding Business: Spray Foam Offers Interesting Opportunities for Sidelines
Can It Be Saved? Common Spray Foam Issues From Processing and Installation
The Evolution of the PCP Modifications and Improvements Through the First Five Years
2017 SPFA Contractor Awards
Discipline, Passion and Grit
Ask the Expert
Upcoming Events
Index of Advertisers | advertisers.com
SPRAYFOAM Professional - Fall 2017 - intro
SPRAYFOAM Professional - Fall 2017 - cover1
SPRAYFOAM Professional - Fall 2017 - cover2
SPRAYFOAM Professional - Fall 2017 - 3
SPRAYFOAM Professional - Fall 2017 - 4
SPRAYFOAM Professional - Fall 2017 - 5
SPRAYFOAM Professional - Fall 2017 - 6
SPRAYFOAM Professional - Fall 2017 - Executive Director’s Corner
SPRAYFOAM Professional - Fall 2017 - 8
SPRAYFOAM Professional - Fall 2017 - President’s Post
SPRAYFOAM Professional - Fall 2017 - 10
SPRAYFOAM Professional - Fall 2017 - 11
SPRAYFOAM Professional - Fall 2017 - Foam Business News
SPRAYFOAM Professional - Fall 2017 - 13
SPRAYFOAM Professional - Fall 2017 - Spfa Today – Membership News & Numbers
SPRAYFOAM Professional - Fall 2017 - 15
SPRAYFOAM Professional - Fall 2017 - 16
SPRAYFOAM Professional - Fall 2017 - Legislative Update
SPRAYFOAM Professional - Fall 2017 - Verdical Group’s 4th Annual Net Zero 2017 Conference: Energy + Water + Waste
SPRAYFOAM Professional - Fall 2017 - 19
SPRAYFOAM Professional - Fall 2017 - An Expanding Business: Spray Foam Offers Interesting Opportunities for Sidelines
SPRAYFOAM Professional - Fall 2017 - 21
SPRAYFOAM Professional - Fall 2017 - 22
SPRAYFOAM Professional - Fall 2017 - 23
SPRAYFOAM Professional - Fall 2017 - 24
SPRAYFOAM Professional - Fall 2017 - 25
SPRAYFOAM Professional - Fall 2017 - Can It Be Saved? Common Spray Foam Issues From Processing and Installation
SPRAYFOAM Professional - Fall 2017 - 27
SPRAYFOAM Professional - Fall 2017 - 28
SPRAYFOAM Professional - Fall 2017 - 29
SPRAYFOAM Professional - Fall 2017 - The Evolution of the PCP Modifications and Improvements Through the First Five Years
SPRAYFOAM Professional - Fall 2017 - 31
SPRAYFOAM Professional - Fall 2017 - 2017 SPFA Contractor Awards
SPRAYFOAM Professional - Fall 2017 - 33
SPRAYFOAM Professional - Fall 2017 - 34
SPRAYFOAM Professional - Fall 2017 - 35
SPRAYFOAM Professional - Fall 2017 - 36
SPRAYFOAM Professional - Fall 2017 - 37
SPRAYFOAM Professional - Fall 2017 - Discipline, Passion and Grit
SPRAYFOAM Professional - Fall 2017 - 39
SPRAYFOAM Professional - Fall 2017 - 40
SPRAYFOAM Professional - Fall 2017 - 41
SPRAYFOAM Professional - Fall 2017 - 42
SPRAYFOAM Professional - Fall 2017 - Ask the Expert
SPRAYFOAM Professional - Fall 2017 - 44
SPRAYFOAM Professional - Fall 2017 - Upcoming Events
SPRAYFOAM Professional - Fall 2017 - Index of Advertisers | advertisers.com
SPRAYFOAM Professional - Fall 2017 - cover3
SPRAYFOAM Professional - Fall 2017 - cover4
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