Q:
How much quieter will my pipe or duct be?
When installed properly we would expect either B-10 LAG/QFA-3 or
B-10 LAG/QFA-9 to result in a decibel drop of 10 dB to 15 dB,
depending on what the dominant frequency is in the particular
application. The tables at the bottom of the technical
datasheets show the Laboratory test transmission loss values
(which is the decibel reduction) at individual 1/3-octave bands.
An overall STC rating is given so that there is standard number
consumers can use when evaluating products.
Q: Why does the 2” material really measure less than that?
The
fiberglass that is used in the manufacture of the product, and
is the industry standard, is a true 2” thick before it is run
through the quilting process. The quilting process serves
several purposes, which includes changing the contour of the
fiberglass; thereby increasing it’s sound absorption properties.
It is common for the
B-10 Lag/QFA-9 material to be less than 1
½” thick when the quilting process is finished. Packaging
the material adds further to the compactness of the product,
especially when it is rolled for packaging.
Q: What is the difference in the pipe wrap products?
B-10 Lag is a 1 Lb psf loaded vinyl noise barrier featuring a
reinforced foil facing which readily accepts a matching lag
tape. This product is often used when a duct or pipe is already
wrapped with a standard thermal insulation.
B-10 LAG/QFA-3 is the same product as above with a one-inch
thick quilted fiberglass decoupler bonded to the back of the
noise barrier. The quilted fiberglass decoupler improves
the overall noise reduction performance of the product.
B-10 LAG/QFA-9 has the same B-10 LAG barrier as above with a
two-inch thick quilted fiberglass decoupler bonded to the back
of the noise barrier. The quilted fiberglass decoupler
improves the overall noise reduction performance of the product,
especially at lower frequencies.
B-20 LAG has a 2 Lb psf noise barrier.
B-20 LAG/QFA-3 has a 2 Lb psf noise barrier with a 1" quilted
fiberglass decoupler.
B-20 LAG/QFA-9 has a 2 Lb psf noise barrier with a 2" quilted
fiberglass decoupler.
Q: Does the lagging material have an R-value?
The pipe and duct wrap with a fiberglass
decoupler has an R-value of 4 per inch or thickness.
Q: Is the lagging
material fire retardant?
"Fire retardant" usually refers to material
itself or clothing made from materials. (You typically
spray on a chemical to make something "fire retardant") and is
not applicable to our products.
We are required to test our products per ASTM
E-84,“Surface Burning Characteristics of Building Materials”,
which is the industry testing standard. This 25-foot
tunnel test measures both flame spread and smoke developed and
is the same as the NFPA 255, UBC 42-1 and UL 723. The
flammability classification of a material is determined by
comparing the test results with standards established by the
National Fire Protection Association (NFPA 701). To
merit a Class A rating, a product must have a smoke developed
rating between 0 and 450 as well as having a flame spread rating
of less than 25.
Q: What does Class A flammability mean?
The product can be used in any building, public or private, in
America. To merit a Class A rating per ASTM E-84, a
product must have a smoke developed rating between 0 and 450 as
well as having a flame spread rating of less than 25. The
ASTM E-84 is a 25-foot tunnel test measures both flame spread
and smoke developed and is the same as the NFPA 255, UBC 42-1
and UL 723. The flammability classification of a material is
determined by comparing the test results with standards
established by the National Fire Protection Association (NFPA
701).
Q: Where can I buy the product?
Many large insulation
wholesale distributors carry our lagging products.
However, if your current insulation distributor doesn’t stock
our product we can ship directly from the factory to your
distributor, your warehouse, or your job site.
