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Wood Frame Construction Insulation

TOPROCK® DD Plus

TOPROCK® DD Plus is a high-density bitumen-coated stone wool insulation board for low-slope roof applications. TOPROCK® DD Plus is compatible as the substrate for the following membrane attachment types:

  • torched
  • hot-mopped
  • self-adhered
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TOPROCK® DD Plus is a high-density bitumen-coated stone wool insulation board for low-slope roof applications

 TOPROCK® DD Plus is compatible as the substrate for the following membrane attachment types:

  • torched
  • hot-mopped
  • self-adhered

The product has excellent acoustic properties and can be used either as a top layer of thermal insulation in an acoustic assembly with TOPROCK® DD or as the top layer of a hybrid roof assembly with polyisocyanurate or other roof insulations.

Properties:

  • Non-combustible, meeting FM 4470 NCC (Non-Combustible Core) Rating
  • Will not warp or cup
  • Dimensionally stable—provides a long-term, consistent thermal performance
  • High impact resistance
  • Excellent acoustic reduction, absorption and impact (rain noise) performance
  • Made from natural & recycled materials
  • ROCKWOOL® can contribute to earning LEED® points
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Specification & size

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Compliance ASTM C726 - FM 4470
ASTM C726*** Standard Specification for Mineral Fiber Roof Insulation Boards
FM 4470 Approval Standard for Single-Ply, Polymer Modified Bitumen Sheet, Built-Up Roof and Liquid Applied Roof Assemblies for use in Class 1 and Noncombustible Roof Deck Construction
FM 4470 NCC (Non-Combustible Core) Rated Roof Insulation
FM Approved 
ULC Listed 
Classified UL 
Miami Dade County Approved 
Density ASTM C303

ASTM C303

Top Layer - 13.75 lb/ft³ (220 kg/m³)

 ASTM C303

Bottom Layer - 10 lb/ft³ (160 kg/m³)

 ASTM C303

Bottom Layer - 9.36 lb/ft³ (150 kg/m³) (for thicknesses >2.5" (63.5 mm))

Dimensional stability ASTM C356 - ASTM D2126
ASTM C356 Linear Shrinkage - 0.71% @ 1200°F (650°C)
ASTM D2126 Linear Change 7 days @ -40°F (-40°C), ambient RH - 0.1%
ASTM D2126 Linear Change 7 days @ 200°F (93°C), ambient RH - 0.1%
ASTM D2126 Linear Change 7 days @ 158°F (70°C), 97% RH - 0.0%
Dimensions Dimensions
48" x 48" (1219 mm x 1219 mm)
Thickness
Product available in 2" – 6" (50.8mm – 152.4 mm) in 1/2" (12.7 mm) increments
Reaction to fire ASTM E84 (UL 723) - CAN/ULC S102 - CAN/ULC S114 - NFPA 276 - CAN/ULC S107-03 - CAN/ULC S126-06 - UL 790 (ASTM E108) - UL 263 (ASTM E119)
ASTM E84 (UL 723) Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S102 Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S114 Determination of Non-Combustibility of Building Materials - Non-Combustible
NFPA 276 Standard Method of Fire Tests for Determining Heat Release Rate of Roofing Assemblies with Combustible Above Deck Roofing Components - Class 1
CAN/ULC S107-03 Fire Tests of Roof Coverings - Class A
CAN/ULC S126-06 Fire Spread under Roof Deck Assemblies - See ULC Directory
UL 790 (ASTM E108) Standard Test Methods for Fire Tests of Roof Coverings - Class A
UL 263 (ASTM E119) Fire Tests of Building Construction and Materials - See UL Directory
Thermal resistance ASTM C518 (C177)
Mean Temperature R-Value RSI Value
75°F (24°C) 3.8 hr.ft2.F/Btu 0.68 m2K/W
25°F (-4°C) 4.3 hr.ft2.F/Btu 0.74 m2K/W
40°F (4°C) 4.2 hr.ft2.F/Btu 0.72 m2K/W
110°F (43°C) 3.6 hr.ft2.F/Btu 0.64 m2K/W
Acoustical Performance ASTM C423 - ASTM E90
  Thickness 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz NRC
ASTM C423 2" 0.5 0.71 0.85 0.9 0.96 1.01 0.85
ASTM E90 Contact ROCKWOOL for STC rated assemblies
Reaction to moisture ASTM C1104 - ASTM C209 - ASTM E96
ASTM C1104 Moisture Sorption - 0.15%
ASTM C209 Water Absorption - <1.0%>
ASTM E96 Water Vapor Transmission, Desiccant Method - 2330 ng/Pa.s.m2 (41 perm)
Compressive strength ASTC C165 - EN 12430
ASTC C165 Top Layer - 20 psi (140 kPa) @ 10%, 37 psi (250 kPa) @ 25%
ASTC C165 Entire Board - 11 psi (75 kPa) @ 10%, 15 psi (105 kPa) @ 25%
EN 12430 Point Load @ 5 mm Compression - 30 psi (205 kPa)
Corrosion Resistance ASTM C795 - ASTM C665
ASTM C795 Stress Corrosion Cracking Tendency of Austenitic Stainless Steel - Passed
ASTM C665 Corrosion of Steel - Passed
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ASTM C726*** Standard Specification for Mineral Fiber Roof Insulation Boards
FM 4470 Approval Standard for Single-Ply, Polymer Modified Bitumen Sheet, Built-Up Roof and Liquid Applied Roof Assemblies for use in Class 1 and Noncombustible Roof Deck Construction
FM 4470 NCC (Non-Combustible Core) Rated Roof Insulation
FM Approved 
ULC Listed 
Classified UL 
Miami Dade County Approved 
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ASTM C303

Top Layer - 13.75 lb/ft³ (220 kg/m³)

 ASTM C303

Bottom Layer - 10 lb/ft³ (160 kg/m³)

 ASTM C303

Bottom Layer - 9.36 lb/ft³ (150 kg/m³) (for thicknesses >2.5" (63.5 mm))

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ASTM C356 Linear Shrinkage - 0.71% @ 1200°F (650°C)
ASTM D2126 Linear Change 7 days @ -40°F (-40°C), ambient RH - 0.1%
ASTM D2126 Linear Change 7 days @ 200°F (93°C), ambient RH - 0.1%
ASTM D2126 Linear Change 7 days @ 158°F (70°C), 97% RH - 0.0%
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48" x 48" (1219 mm x 1219 mm)
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Product available in 2" – 6" (50.8mm – 152.4 mm) in 1/2" (12.7 mm) increments
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ASTM E84 (UL 723) Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S102 Flame spread index = 0 ; Smoke developed index = 0
CAN/ULC S114 Determination of Non-Combustibility of Building Materials - Non-Combustible
NFPA 276 Standard Method of Fire Tests for Determining Heat Release Rate of Roofing Assemblies with Combustible Above Deck Roofing Components - Class 1
CAN/ULC S107-03 Fire Tests of Roof Coverings - Class A
CAN/ULC S126-06 Fire Spread under Roof Deck Assemblies - See ULC Directory
UL 790 (ASTM E108) Standard Test Methods for Fire Tests of Roof Coverings - Class A
UL 263 (ASTM E119) Fire Tests of Building Construction and Materials - See UL Directory
Back
Mean Temperature R-Value RSI Value
75°F (24°C) 3.8 hr.ft2.F/Btu 0.68 m2K/W
25°F (-4°C) 4.3 hr.ft2.F/Btu 0.74 m2K/W
40°F (4°C) 4.2 hr.ft2.F/Btu 0.72 m2K/W
110°F (43°C) 3.6 hr.ft2.F/Btu 0.64 m2K/W
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  Thickness 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz NRC
ASTM C423 2" 0.5 0.71 0.85 0.9 0.96 1.01 0.85
ASTM E90 Contact ROCKWOOL for STC rated assemblies
Back
ASTM C1104 Moisture Sorption - 0.15%
ASTM C209 Water Absorption - <1.0%>
ASTM E96 Water Vapor Transmission, Desiccant Method - 2330 ng/Pa.s.m2 (41 perm)
Back
ASTC C165 Top Layer - 20 psi (140 kPa) @ 10%, 37 psi (250 kPa) @ 25%
ASTC C165 Entire Board - 11 psi (75 kPa) @ 10%, 15 psi (105 kPa) @ 25%
EN 12430 Point Load @ 5 mm Compression - 30 psi (205 kPa)
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ASTM C795 Stress Corrosion Cracking Tendency of Austenitic Stainless Steel - Passed
ASTM C665 Corrosion of Steel - Passed
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