
Sarnatherm® ISO
Sarnatherm® ISO is a rigid closed cell polyisocyanurate insulation board with fibre-reinforced felt facers, suitable for use in new construction and re-roofing with Sarnafil® or Sikaplan® membranes.
- Manufactured with no CFCs or HCFCs
- Virtually no GWP (global warming potential)
- Zero ODP (ozone depletion potential)
- Compatible with Sarnafil and Sikaplan membranes
Usage
Wherever insulation is required within a conventional roof assembly to achieve specified thermal resistance. Areas of Application- New roofs
- Recover roofs
- Mechanically-Attached Systems
- Adhered Systems
Advantages
- Manufactured with no CFCs or HCFCs
- Virtually no GWP (global warming potential)
- Zero ODP (ozone depletion potential)
- Compatible with Sarnafil and Sikaplan membranes
Packaging
1.2 m x 1.2 m (4 ft x 4 ft)
1.2 m x 2.4 m (4 ft x 8 ft)
Product Details
APPROVALS / CERTIFICATES
- ASTM C 1289 Type II, Class 1, Grade 2 (138 kPa (20 psi))
- ASTM C 1289 Type II, Class 1, Grade 3 (172 kPa (25 psi))
- ULC S704, Type 2, Class 3 (138 kPa (20 psi))
- ULC S704, Type 3, Class 3 (172 kPa (25 psi))
- UL 1256, 790, 263
- ULC S126, S101, S107
- FM 4450, 4470
- Miami-Dade County
- Florida Building Code
- CSA-A123.21
Composition / Manufacturing
Polyisocyanurate foam core with fibre reinforced felt facers
Shelf Life
Not applicable
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 102 mm (4 in) 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.
Thickness
LTTR Value* | Thickness | Flute Spanability |
5.7 | 25.4 mm (1.0") | 50.8 mm (2-5/8") |
8.6 | 38.1 mm (1.5") | 101.6 mm (4-3/8") |
10.3 | 45.72 mm (1.8") | 101.6 mm (4-3/8") |
11.4 | 50.8 mm (2.0") | 101.6 mm (4-3/8") |
14.4 | 63.5 mm (2.5") | 101.6 mm (4-3/8") |
15.0 | 66.04 mm (2.6") | 101.6 mm (4-3/8") |
17.4 | 76.2 mm (3.0" **) | 101.6 mm (4-3/8") |
20.5 | 88.9 mm (3.5" **) | 101.6 mm (4-3/8") |
23.6 | 101.6 mm (4.0" **) | 101.6 mm (4-3/8") |
*LTTR Values were determined in accordance with CAN/ULC-S770-09. Test samples were third‐party selected and tested by an accredited material testing laboratory. The LTTR results were reviewed by FM Global and certified by the PIMA Quality Mark Program.
**Use multiple layers when the total desired or specified R‐value requires an insulation thickness greater than 68.58 mm (2.7 in).
Compressive Strength
138 kPa (20 psi) 172 kPa (25 psi) | (ASTM D1621) |
Dimensional Stability
< 2 % | (ASTM D2126) |
Service Temperature
‐73 - 121oC (‐100 - 250oF)
Water Absorption
< 1.5 % | (ASTM C209) |
Permeability to Water Vapour
< 85.5 ng/(Pa·s·m2)), (1.5 perm) | (ASTM E84) |
Reaction to Fire
Flame Spread | 25-60** |
Smoke Development | 50-170** |
**Numerical ratings are not intended to reflect performance under actual fire conditions. Flame spread index of ≤75 and smoke development ≤450 meet code requirements for foam plastic roof insulation. Codes exempt foam plastic insulation when used in FM 4450, UL 1256, ULc S126.
Application
APPLICATION INSTRUCTIONS
Sarnatherm® ISO is installed by a Sika Canada Authorized Applicator. Sarnatherm® ISO may be installed by mechanical attachment to the roof deck with Sarnafasteners and Sarnaplates and/or by attachment with Sarnacol board adhesive depending on project requirements and specifications. Roof insulation which has become wet or damaged should be removed and replaced with solid, dry insulation. Contact Sika Canada for alternative methods of attachment.