INSTALLATION
INSTRUCTIONS
FOR
THERMASOTE®
AND
NCFR® /
THERMASOTE®
NAIL BASE ROOF
INSULATION |
PRODUCT PRESENTATION
THERMASOTE® is a composite of strong,
asbestos-free, insulating, weather resistant, nailable 440
Homasote® plus isocyanurate foam and a bottom facer of
glass fiber reinforced felt, fibrous glass, or foil.
Thermasote is Underwriters Laboratories Classified, as
listed in Report #R13614, as a Shingle Decking
Accessory for Class A, B, or C shingles.
NCFR®/THERMASOTE® is a composite of strong,
asbestos-free, insulating, weather-resistant, nailable UL
Class "A" NCFR® Homasote plus an isocyanurate foam
core with a glass fiber reinforced facer, for use in FM
approved Class 1 construction as listed in Factory Mutual
Report #J.I.-1JOA9.AM.
MATERIAL SPECIFICATIONS
THERMASOTE® and NCFR® / THERMASOTE®
Size: 4' x 8' (Nominal)
Overall Nominal
Thickness
(inches) |
2.0 |
2.5 |
3.0 |
4.0 |
Nominal Foam
Thickness
(inches) |
1.5 |
2 |
2.5 |
3.5 |
Nominal Weight
(pounds/ ft.2) |
1.5 |
1.6 |
1.8 |
2.1 |
R-Factor AGED |
11.1 |
14.4 |
18.2 |
27.0 |
NOTE: Also available in 1.5" thickness (R-7.2) and 3.5"
thickness (R- 22.5) in minimum 3 trailer load quantities.
The thermal value of this product was determined in
accordance with the TIMA conditioning procedure as
outlined in PIMA Technical Bulletin 101.
READ THIS BEFORE YOU BUY
WHAT YOU SHOULD KNOW ABOUT R-
VALUES
The charts shown in this brochure indicate
the R-value of the insulation. R means
resistance to heat flow. The higher the R-
value, the greater the insulating power.
Compare insulation R-values before you buy.
There are other factors to consider The
amount of insulation you need depends
mainly on the climate you live in. Also, your
fuel savings from insulation will depend upon
the climate, the type and size of your building,
the amount of insulation already in your
building, and your fuel use patterns. If you buy
too much insulation, it will cost you more than
you'll save on fuel.
To get the marked R-value, it is essential that
this insulation be installed properly. |
Code Compliances
THERMASOTE® and NCFR®/THERMASOTE® conform
to Federal Specification HH-1-1972/GEN.
NCFR®/THERMASOTE® is Factory Mutual approved for
Class 1 construction.
TYPICAL PHYSICAL PROPERTIES
Property |
Test Method |
Result |
Dimensional
Stability
(foam) |
150°F
90 - 100 RH |
less than 2%
linear change |
Compressive
Strength |
ASTM D-1621 |
20-25 |
Nominal
Foam Density |
ASTM D-1622 |
2.0 |
Moisture
Absorption |
ASTM C -209 |
1 |
Moisture
Vapor
Transmission |
ASTM E-96 |
1.0 (Perm - in) |
FIRE RESISTANCE RATINGS
THERMASOTE®
Isocyanurate foam-Flame Spread 25-Smoke Density
250. Tested according to ASTM E-84 (80).
Homasote substrate - Flame Spread - Class III (or C)
NCFR® /THERMASOTE®
has both an isocyanurate foam core and a fire-retardant
nail base substrate that carries a Class A (0-25) Flame
Spread Rating [ASTM E- 84 (80)] and is approved for
use in FM-1 construction.
WARNING: While the Homasote® portion of the
THERMASOTE® or NCFR®/THERMASOTE® panel
provides a satisfactory nail base, the isocyanurate (an
organic material) will decompose above 450°F and will
ignite and burn at 600°F-700°F or when exposed to open
flame. Therefore, the isocyanurate side should not be
exposed.
ARCHITECTURAL SPECIFICATION (Short Form)
THERMASOTE®
All nail base insulating roof panels shown in drawing shall
be_________ thick THERMASOTE® as manufactured
by the Homasote Company, West Trenton, NJ, and
installed in accordance with current Homasote Company
instructions.
NCFR® /THERMASOTE®
All nail base insulating roof panels shown in drawings
shall be_________ thick FM-1 approved and listed
NCFR® /THERMASOTE® as manufactured by the
Homasote Company, West Trenton, NJ, and shall be
installed in accordance with current instructions issued by
Homasote Company.
PACKAGING, STORAGE & PROTECTION
THERMASOTE® & NCFR® /THERMASOTE® come to
the job site in weather-resistant, plastic covered units.
However, all materials should be stored at job site above
ground on wooden pallets and covered by tarpaulins.
Packaging material is not intended for exterior job site
protection.
INSTALLATION REQUIREMENTS
Moisture protection is the responsibility of the
contractor THERMASOTE® & NCFR® /THERMASOTE®
Panels must be protected from weather and/or standing
water at all times. No moisture from any source should be
sealed into a roof system. Roofing felts, insulation, or
vapor retarders that become wet or water- laden during
construction should be removed and replaced before the
application of finish roofing materials.
Vapor retarders in general are based on many and
varied factors. They shall or shall not be used depending
on architectural or engineering evaluation of existing
conditions. However, a vapor retarder is required over
newly poured structural concrete as well as lightweight
insulating concrete decks. Vapor retarders are generally
recommended in areas of the country where the average
mean temperature in January is less than 40°F and the
relative humidity in the building is greater than 45%. If a
vapor retarder is needed in your area, it should be added
to your roof system by applying No. 30 felt or 4 or 6 mil
polyethylene film over the structural decking before
application of THERMASOTE® or NCFR®
/THERMASOTE® . Care should be taken to assure that
the joints of vapor retarder are overlapped 4 to 6 inches
and all tears/holes are repaired.
