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Accurately Calculate IWS Requirements in Seconds

Contractors love how easy it is to pinpoint precisely how much ice and water shield membrane they need. Stay on budget and meet code requirements without any hassle.

"We make it easy for you to calculate the exact amount of material needed and provide all the necessary documentation to support your claims."

— Handlin Construction, Licensed Class A Contractor

Roof Geometry

Common: 4/12, 6/12, 8/12

How far roof extends past the wall (typical: 12-18")

Exterior wall depth: 4" (2x4), 6" (2x6)

Distance beyond interior wall where heating ends (min 24")