Product Data Sheet Safety Data Sheet Show all documents
Sarnatherm® Roof Board-R

Sarnatherm® Roof Board-R

Sarnatherm Roof Board-R is a lightweight, high-density polyisocyanurate roof board with coated glass facers.

Sarnatherm Roof Board-R is a lightweight, high-density polyisocyanurate roof board with coated glass facers. Sarnatherm Roof Board-R is suitable for use in new construction and recover roof applications with Sarnafil® or Sikaplan® membranes. The coated glass facers provide strong, smooth surfaces suitable for mechanically attached or adhered applications.

  • Lightweight for easy hoisting, staging and maneuvering
  • High impact and flexural strength
  • Manufactured using CFC-, HCFC- and HFC-free foam blowing technology
  • Negligible Global Warming Potential (GWP)
  • Zero Ozone Depletion Potential (ODP)
Product Data Sheet Safety Data Sheet Show all documents

Usage

Used as a lightweight roof board in conventional roof assemblies
  Areas of Application
  • New Roofs
  • Recover Roofs
  • Mechanically Fastened Systems
  • Adhered Systems
 

Advantages

  • Lightweight for easy hoisting, staging and maneuvering
  • High impact and flexural strength
  • Manufactured using CFC-, HCFC- and HFC-free foam blowing technology
  • Negligible Global Warming Potential (GWP)
  • Zero Ozone Depletion Potential (ODP)

Packaging

4 ft x 4 ft (1.2 m x 1.2 m)
4 ft x 8 ft (1.2 m x 2.4 m)
0.5" (12.7 mm) thickness, 42 sheets per pallet
Weight:  0.35 lb/ft2 (1.71 kg/m2) average

Color

Off-white core with light gray facers

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • ASTM C1289, Type II, Class 4, Grade 1
  • FM 4450 / 4470
  • UL 1256, 790, 263
  • UL Certified for Canada
  • International Building Code (ICC) Chapter 26, Section 2603, Foam Plastic

 
Product Information

Chemical Base

Polyisocyanurate foam core with coated glass facers

Recycled Content

2% Pre-consumer recycled content, % by weight

Shelf Life

N/A

Storage Conditions

Factory-applied packaging is intended only for protection during transit. When stored outdoors or on the job site, the insulation should be stacked on pallets at least 4" (102 mm) above ground level and completely covered with a weatherproof covering such as a tarpaulin. The temporary factory-applied packaging should be slit or removed to prevent accumulation of condensation. Refer to PIMA Technical Bulletin #109: Storage and Handling Recommendations for Polyiso Roof Insulation.
Technical Information

Compressive Strength

80 psi (551 kPa) minimum

(D-1621)

Flexural Strength

> 2000 psf (95 kPa)

(D-1623)

Dimensional Stability

< 0.5 % Linear Change

(D-2126)

Reaction to Fire

Flame Spread: 25 or Less*

Smoke Development: 160 or less*

(E-84)

* Flame spread numbers are shown for comparison purposes only and are not intended to represent the performance of Sarnatherm Roof Board-R and related components under actual fire conditions.

Thermal Resistance

2.5 (0.44 m2 ·K/W) *

(C-518)

* At 75°F mean temperature on material conditioned according to PIMA Technical Bulletin No. 101.

Permeability to Water Vapor

< 1.5 perm (85.0 ng/(Pa ·s ·m2)

(E-96)

Water Absorption

< 3.0 %

(C-209)

Microbiological Resistance

10, no defacement

(D-3273)

Service Temperature

250°F (121°C) maximum

Application

Application steps

APPLICATION INSTRUCTIONS

Sarnatherm Roof Board-R is installed by a Sika Authorized Applicator. Sarnatherm Roof Board-R may be installed by mechanical-attachment to the roof deck with approved fasteners and insulation plates or by attachment with Sarnacol board adhesive depending on project requirements and specifications. Cut through the entire thickness of the board when cutting boards to fit. Roof boards that have become wet or damaged should be removed and replaced with solid, dry roof boards. Contact Sika Corporation – Roofing Technical Department regarding alternative methods of attachment.

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