THERMAS0TE® 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 No. R13614, as a Shingle Decking Accessory for Class A, B, or C shingles.

SIZES, WEIGHTS AND THERMAL RESISTANCE

Size: 4' x 8' (Nominal)
Overall Nominal Thickness (inches): 2.0
Nominal Foam Thickness (inches): 1.5
Nominal Weight (pounds/ft.²): 1.5
R-Factor AGED: 11.1

Overall Nominal Thickness (inches): 2.5
Nominal Foam Thickness (inches): 2
Nominal Weight (pounds/ft.²): 1.6
R-Factor AGED: 14.4

Overall Nominal Thickness (inches): 3.0
Nominal Foam Thickness (inches): 2.5
Nominal Weight (pounds/ft.²): 1.8
R-Factor AGED: – 18.2

Overall Nominal Thickness (inches): 4.0
Nominal Foam Thickness (inches): 3.5
Nominal Weight (pounds/ft.²): 2.1
R-Factor AGED: 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

Dimensional Stability (foam)
Test Method: 150° F 90-100 RH
Result: less than 2% linear change

Compressive Strength
Test Method:ASTM D-1621
Result: 25

Nominal Foam Density
Test Method: ASTM D-1622
Result: 2.0

Moisture Absorption
Test Method: ASTM C-209
Result: 1

Moisture Vapor Transmission
Test Method: ASTM C-355
Result: 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-I-1972/GEN.
Metropolitan Dade County No. 84-0626.1
State of California License No. TD 1090
ICBO No. 1016
SBCC No. 8653

Read This Before You Buy
What You Should Know About R-Values
The tables shown in this program 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 No. 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 No. 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.

AVAILABILlTY

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.

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 No. 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 No. J.1.-1J0A9.AM.

MATERIAL SPECIFICATIONS

THERMASOTE® and NCFR®/THERMASOTE®
Size: 4' x 8' (Nominal)

Overall Nominal Thickness (inches): 2.0
Nominal Foam Thickness (inches): 1.5
Nominal Weight (pounds/ft.²): 1.5
R-Factor AGED: 11.1

Overall Nominal Thickness (inches): 2.5
Nominal Foam Thickness (inches): 2
Nominal Weight (pounds/ft.²): 1.6
R-Factor AGED: 14.4

Overall Nominal Thickness (inches): 3.0
Nominal Foam Thickness (inches): 2.5
Nominal Weight (pounds/ft.²): 1.8
R-Factor AGED: 18.2

Overall Nominal Thickness (inches): 4.0
Nominal Foam Thickness (inches): 3.5
Nominal Weight (pounds/ft.²): 2.1
R-Factor AGED: 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.

Code Compliances
THERMASOTE® and NCFR®/THERMASOTE® conform to Federal Specification HH-I-1972/GEN. NCFR®/THERMASOTE® is Factory Mutual approved for Class 1 construction.

TYPICAL PHYSICAL PROPERTIES

Dimensional Stability (foam)
Test Method: 150° F 90-100 RH
Result: less than 2% linear change

Compressive Strength
Test Method: ASTM D-1621
Result: 20 - 25

Nominal Foam Density
Test Method: ASTM D-1622
Result: 2.0

Moisture Absorption
Test Method: ASTM C-209
Result: 1

Moisture Vapor Transmission
Test Method: ASTM E-96
Result: 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 AND PROTECTION

THERMASOTE® AND 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® and 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.

ASSEMBLY INSTALLATION

A. Apply wood nailers of same thickness as THERMASOTE® or NCFR®/THERMASOTE® to surface of decking at all eaves and rake edges of roof to provide starter strip and nailing for trim and fascia. See Detail A.*
B. Starting at low or outside edge of the roof, place the THERMASOTE® or NCFR®/THERMASOTE® panel with Homasote® face up on roof deck spacing 1/8" from blocking at eave and rake to provide expansion.
C. For panel attachment instructions to structural deck, see "FASTENING SPECIFICATIONS" listed below.
D. Place subsequent panels in like manner, lightly abutting the adjacent panel. Stagger panel joints in adjacent courses to avoid thru joints and assist in diaphragm action.
E. As THERMASOTE® or NCFR® /THERMASOTE® panels are installed cover immediately with roofing felt and finish roofing.

*NOTE: Apply vapor retarder over structural decking in areas of the country requiring a vapor retarder before the application of THERMASOTE® or NCFR®/THERMASOTE® per "Installation Requirements" on reverse side.

NO MOISTURE FROM ANY SOURCE SHOULD BE SEALED INTO A ROOF SYSTEM. ROOFING FELTS, INSULATION OR VAPOR RETARDERS THAT BECOME WET OR WATERLADEN DURING CONSTRUCTION SHOULD BE REMOVED AND REPLACED BEFORE THE APPLICATION OF FINISH ROOFING MATERIALS.

FASTENING SPECIFICATIONS*

1. To Homasote Easy-ply® or Firestall® Roof Deck – Nail panel to deck, 6" o.c. along all edges (hold nails back 1/2" from panel edge) and 12" o.c. through field of board. Use Homasote Nail (3/8" head, annular threaded shank) of sufficient length to penetrate a minimum of 1" into deck.
2. To Wood Decking – Nail panel to deck, 12" o.c. along all edges (hold nail back 1/2" from panel edge) and through the field of the board. Use a common galvanized nail of sufficient length to penetrate a minimum of 1" into deck.
3. To Metal Deck – Fasten panel to deck with appropriate self-drilling metal deck screw. Consult metal screw manufacturer for proper length and gauge to penetrate specific metal deck, in accordance with fastener pattern below.
4. To Structural Concrete Deck –
a. Roof pitch of 2" in 12" or greater – Fasten the panel to the deck using appropriate "Tapcon" type fastener or equal, in accordance with fastener pattem below.
b. Roof pitch of less than 2" in 12" but not less than 1/4" in 12" – Attach panel by method outlined in (a.) or by setting panel in 25 to 30 lbs./square of steep asphalt in a 100% coverage fashion.
5. To Cementitious or Other Fiber Decks – Attach panel to deck in manner prescribed by respective roof deck manufacturer.

*NOTE: Always fasten THERMASOTE starting from the center out.

ROOFING APPLICATION

1. Asphalt/Fiberglass Shingles* – Apply roofing felt and asphalt/fiberglass strip shingles directly to the THERMASOTE® or NCFR®/THERMASOTE® panels.

Use Homasote Nail No. 2125 (3/8" head, 1-1/4" long, annular threaded, galvanized), Bostitch Nail No. CR3DGAL (3/8" head, 1-1/4" long) shot with N12B Roofing Nailer, or Senco Staple No. P17BAB (1" crown, 1-1/2" long, 5562 galvanized wire with Sencoting) shot with the appropriate Senco stapler.

*NOTE: Homasote Company requires the use of a premium or laminated roofing shingle over THERMASOTE® or NCFR®/THERMASOTE®.The shingle must have a minimum weight of 240 lbs. per square.

2. Wood Shingles or Shakes – For wood shingles, attach roofing felt to the THERMASOTE® or NCFR®/THERMASOTE® and apply shingle directly over the roofing paper with annular threaded, corrosion-resistant nails of sufficient length to penetrate 1" into the THERMASOTE® or NCFR®/THERMASOTE®. Apply shingles following the procedure outlined by the Cedar Wood Shingle Mfg. Association.

3. Roofing Tiles or Slate – For rigid-type, non-wood, cement, clay tile, or slate shingles over roofing felt, use corrosion-resistant annular threaded roofing nails with 3/8" diameter head and of sufficient length to assure 1" penetration into the THERMASOTE® or NCFR®/THERMASOTE®. In all cases, follow the recommendations of the roofing materials manufacturer.

4. BUR – Apply according to BURSI standards for attachment to wood fiber insulation.

5. Single-Ply Membranes – Apply to THERMASOTE® or NCFR®/THERMASOTE® in accordance with single-ply manufacturer’s recommendation. Consult Homasote Company for most recent single-ply manufacturer’s approval list.

6. Metal Roofing – Contact Homasote Company for metal roofing application recommendations.

AVAILABILlTY

homasote
COMPANY
P.O. Box 7240
West Trenton, NJ 08628-0240
1-800-257-9491
Ph: (609) 883-3300
Fax: (609) 530-1584