A Reinforced Self-adhesive Cap Sheet that’s Ideal for any Low-slope Roofing Project

IKO Roof-Fast Cap is a reinforced, self-adhering membrane (SAM) that has a release film on its reverse. This roofing product works great on its own or when used along with IKO Roof-Fast Base for any low-slope residential roofing systemIKO Roof-Fast Cap is available in a range of attractive mineral surface colors that currently includes White, Vintage Green, Dual Brown, Slate Grey, Driftwood and Black.

What exactly is a “low-slope” roof? Most local building codes consider a roof to be low-slope when its pitch ranges from 4/12 and below, down to and including 2/12. Asphalt shingles, with certain application adjustments, can generally be installed down to slopes of 2:12. But for those lower slopes (from 2:12 down to 1/2:12) you’ll want a membrane system like Roof-Fast.

The important thing for homeowners to understand is that a low-slope roof can’t shed water as quickly as a steeper one can, so there’s a greater chance of water leaking through the roof during periods of prolonged, wind-driven rain. Also, in cold climates, water can back up and leak through shingled roofs if ice dams form at the eave.

To help protect homeowners against the potential water damage that low-slope roofs are susceptible to, most municipal authorities have amended local building codes to address the need for improved water-shedding performance. IKO Roof-Fast Cap is engineered to meet or exceed these critical building code specifications.

IKO Roof-Fast Cap, when used with IKO Roof-Fast Base, is an ideal solution for new structures designed with low-slope areas or renovated structures with a low-slope roof. It creates a multilayer roofing system that provides an optimal level of protection against leaks.


ASMT D6163 Type I Grade G, ASTM E108 Class C / UL790 Class C, CAN/ULC S107 Class C, CSA A123.23 Type A Grade I
10.03 m x 1 m (32.92' x 3.3')
Coverage Per Package
9.29 m² (100 sq. ft.)
Qty Per Pallet
Quantity Per Unit/Package

All values shown are approximate.
Note: IKO strives to accurately reproduce the screen images of the product swatches and house photos shown. However, due to manufacturing variances, the limitation of your monitor and resolution, and the variation in natural exterior lighting, actual colors may vary from the images you see. To ensure complete satisfaction, please make your final color selection after viewing a sample of the product.

For products with Miami Dade NOA, Florida Product Approval, and Texas Department of Insurance listings are available. For more information please contact IKO at: 1-888-IKO-ROOF (1-888-456-7663)

Roof-Fast Cap



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