SPRAYFOAM Professional - Summer 2015 - (Page 48)
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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:
I was asked recently if our company took quality control samples of our foam
during application. What specifically is a quality control sample, what value is
it, and how do you take one?
A quality control sample is a piece of foam obtained from
the actual substrate/assembly that you are spraying. This
differs from a sample that is sprayed off target to plastic,
cardboard or plywood. The sample is typically 2-4 inches
in diameter and extends from the top surface of the foam to
The value of a quality control sample is that if taken at
regular intervals during the application, it can identify foam
defects early on so that the whole job is not compromised.
Specifically the sample can let you know if the foam has
the physical properties desired for that application and will
perform as expected.
Quality control samples also indicate adhesion to substrate.
48 sprayfoam Professional |
The following characteristics can be observed and measured from a quality control sample:
o ompressive strength
o ell structure
o Adhesion to the substrate
o Interlaminar foam adhesion
o Presence of moisture on the substrate
o Anomalies such as fissures, cracks, blowholes, voids, etc.
o Strong odor
The first quality control sample should be obtained as
soon as the foam has set sufficient to adequately represent
Quality control samples tell density, strength and number and
thickness of lifts.
Table of Contents for the Digital Edition of SPRAYFOAM Professional - Summer 2015
Executive Director’s Corner
Foam Business News
Sprayfoam 2015 Convention and Expo Coverage
The Impact of Negative Media
Behind the Foam
Speaking Sensibly New Building Codes – Air Tightness, Ventilation and Moisture Control
Communication and Commercial Sprayfoam Projects
2015 SPFA Contractor Awards
Ask the Expert
Index of Advertisers | Advertisers.com
SPRAYFOAM Professional - Summer 2015