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ROCKWOOL Toprock® DD

Name: Toprock DD
Brand: Rockwool

Toprock^® DD is a high-density uncoated stone wool insulation board for low-slope roof applications. Toprock^® DD is a suitable substrate board for all low-slope roof decks and is compatible as the substrate for mechanically attached membrane systems.

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Download data sheet Acoustic Solutions Guide

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Toprock® DD is a high-density uncoated stone wool insulation board for low-slope roof applications

Toprock^® DD is a suitable substrate board for all low-slope roof decks and is compatible as the substrate for mechanically attached membrane systems.

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

Read our Low slope roofing brochure

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

Making Sense of R-Value in Commercial Stone Wool Roofing Systems

Roofing Accessory Materials

ROCKWOOL has a range of roofing accessory products available to provide a complete roof insulation assembly, to create a customized, high performing roofing system. These products include:

Toprock Tapered and Toprock Tapered Plus panels available as both unfaced and bitumen coated options
Toprock Flute Filler – N-Deck and B-Deck Flute Filler products available for metal deck roof acoustic applications
Toprock CANT Strips

These accessory products are available as part of a full ROCKWOOL roofing solution. Please contact your local ROCKWOOL roofing sales representative to learn more about ROCKWOOL stone wool roofing products.

Contact Roofing Support

Dave Lawlor

Canada and Mexico

dave.lawlor@rockwool.com

9056993861

Joseph Donnelly

United States

joe.donnelly@rockwool.com

484-426-7444

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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 Non-Combustible 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)
	Bottom Layer - 10 lb/ft³ (160 kg/m³)
	Bottom Layer - 9.36 lb/ft³ (150 kg/m³) (for thicknesses >2.5" (63.5mm))

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%
	Linear Change 7 days @ 200°F (93°C), ambient RH - 0.1%
	Linear Change 7 days @ 158°F (70°C), 97% RH - 0.0%

Dimensions

48" x 48" (1219 mm x 1219 mm)

Thickness

Product available in 2" – 6" (50.8 mm – 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

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

ASTM C165	Top Layer - 20 psi (140 kPa) @ 10%, 37 psi (250 kPa) @ 25%
ASTM 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 Non-Combustible 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)
	Bottom Layer - 10 lb/ft³ (160 kg/m³)
	Bottom Layer - 9.36 lb/ft³ (150 kg/m³) (for thicknesses >2.5" (63.5mm))

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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%
	Linear Change 7 days @ 200°F (93°C), ambient RH - 0.1%
	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" (50.8 mm – 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

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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

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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)

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ASTM C165	Top Layer - 20 psi (140 kPa) @ 10%, 37 psi (250 kPa) @ 25%
ASTM C165	Entire Board - 11 psi (75 kPa) @ 10%, 15 psi (105 kPa) @ 25%
EN 12430	Point Load @ 5 mm Compression - 30 psi (205 kPa)