Sarnatherm® XPS tapered

• ASTM C 578, Type XII, X, XIII, IV, VI, VII, V 
• CAN/ULC S701, Type 4

Polystyrene foam core with a smooth skin surface on the face and back surfaces

N/A

When stored outdoors, the insulation should be stacked on pallets at least 4” (102 mm) above the surface level and protected from exposure to direct sunlight and weather using an opaque, light-colored tarpaulin. Do not use a dark colored tarpaulin. The factory applied packaging is intended only for protection during transit and should only be slit enough to prevent accumulation of condensation then removed prior to immediate use. Insulation that becomes wet or damaged should be removed and replaced with dry insulation

Thermal Data*

*Not all available thicknesses are listed.

Minimum values at yield or 10 % deformation, whichever occurs first.

Minimum values

Maximum Use Temperature                                                                             

*Water vapor permeance varies with product type and thickness. Values are based on the desiccant method and they apply to insulation 1" (25 mm) or greater in thickness

% by volume

*These values are not intended to reflect hazards presented by this or any other material under actual fire conditions

Sarnatherm® XPS tapered is installed either under or over the Sika roofing/waterproofing membrane depending on the system design. Overburden is utilized to hold the insulation in place in a waterproofing application. Polystyrene should not come in contact with PVC. Always place a separation layer such as Sarnafelt NWP between the Sarnatherm® XPS tapered and the membrane in both roofing and waterproofing applications. During installation in hot, sunny weather, protect the insulation with a white covering to prevent excessive heat build‐up and potential warping of the insulation boards.