NAIL BASE ROOF INSULATION |
® |
USES
THERMASOTE® is a nail base insulation board
combined with isocyanurate foam for application over
Homasote Roof Decking, wood, or other structural
decking to provide insulation and energy conservation. It
is particularly useful as roof insulation in exposed beam
systems where the most efficient location of this insulation
is above the structural deck, and the use of asphalt,
fiberglass or wood shingles, slate or tile require that they
be installed over a nail base substrate.
Thermasote is Underwriters Laboratories Classified,
as listed in Report #R13614, as a Shingle Decking
Accessory for Class A, B, or C shingles.
SIZES, WEIGHTS & THERMAL RESISTANCE
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.
Thermal value of this product was determined in
accordance with the TIMA conditioning procedure as
outlined in RIC/TIMA Technical Bulletin 281-1.
PHYSICAL PROPERTIES
Property |
Test Method |
Result |
Dimensional
Stability (foam) |
150°F
90-100 RH |
less than 2% linear
change |
Compressive
Strength |
ASTM D-1621 |
25 |
Nominal Foam
Density |
ASTM D-1622 |
2.0 |
Moisture
Absorption |
ASTM C-209 |
1 |
Moisture Vapor
Transmission |
ASTM C-355 |
1.0 (Perm-in) |
FIRE RESISTANCE RATINGS
Isocyanurate foam-Flame Spread 50-Smoke Developed
205. Homasote Substrate-Flame Spread-Class III (or C).
Tested according to ASTM E-84 (80).
(For Factory Mutual approved and listed nail base roof
insulation see NCFR®/THERMASOTE.®)
WARNING: While the Homasote® portion of the
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.
CODE COMPLIANCES
THERMASOTE® conforms to Federal Specification H
H-1-1 972/GEN.
Metropolitan Dade County #84-0626.1
State of California License No. TO 1090
BOCA #84-65
ICBO #1016
SBCC #8653
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
what you'll save on fuel.
To get the marked R-value, it is essential that
this insulation be installed properly. |
ARCHITECTURAL SPECIFICATION
(Short form)
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.
FASTENING SPECIFICATIONS
Thermasote® can be applied to most types of structural
decking including Homasote, Wood, Metal, Structural
Concrete, and Cementitious or other Fiber Decks. For
detailed fastening specifications refer to installation
instruction sheet #T-8-132-5.
ROOFING APPLICATION
Most types of finish roofing materials can be applied
directly to Thermasote including Asphalt/Fiberglass
Shingles, Wood Shingles or Shakes, Roofing Tiles or
Slate, Built up roofing, Single ply membranes and Metal
Roofing. For detailed application specifications refer to
installation instructions sheet #T-8-132-5.
INSTALLATION REQUIREMENTS
Moisture protection is the responsibility of the
contractor. Thermasote® 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.
PACKAGING, STORAGE AND PROTECTION
Thermasote® comes 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.
AVAILABILITY
Homasote products, samples and technical literature are
available throughout the United States and Canada.
Contact your local building material dealer, roofing
distributor, or write to Homasote Company, P.O. Box
7240, West Trenton, NJ 08628-0240.
