Base Sheets

Base sheets set the foundation for the performance of the roof, which is why ours are manufactured with the highest quality asphalts and reinforcements.


FA-2T is a highly versatile, easy to apply base sheet compatible with any APP modified bitumen membrane. It can be mechanically fastened or torch-applied.

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FS-2H has excellent weatherability, which enhances the overall flexibility and fatigue resistance of hot-applied systems. It is compatible with any of Bitec’s SBS modified bitumen membranes.

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FS-2H-FR provides the same performance features as FS-2H, but includes a fire resistant additive.

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PS-2H is an easy to apply SBS base sheet that works in conjunction with SBS cap sheets to provide unsurpassed watertight protection.

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Beta Base

Beta Base is an oxidized bitumen, fiberglass reinforced base sheet that can be used in modified bitumen and traditional built-up roof systems.


All values given are approximate and are subject to change without notice. There is no implied or express warranty given through these values, or statements, nor are there any assertions that the product purchased has been individually tested to conform to these standards. Testing is performed on a random basis, "in house" and at times with third party evaluation for the purpose of classification and or approval. Acceptance, purchase and selection of these products is the sole responsibility of the roofing contractor, architect, consultant, owner or buyer. We participate in UL and FMRC follow-up service in order to keep our classifications and approvals active.