Task category

Roof materials

Turn measured roof area and lengths into purchase quantities. Use the coverage, stock dimensions and overlap requirements for the product you plan to buy. Bundles, sheets, panels, rolls, trim and fasteners. Quantity estimates do not replace product instructions, a complete installation layout or a supplier takeoff.

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15 tasks listed. Browse the directory below or enable JavaScript to search.

Covering and purchase quantities

Asphalt shingle bundlesEstimate bundles from roof area and the product coverage on the package. Metal roofing panelsEstimate panels from area and exposed panel coverage after overlap. Area coverage quantityConvert area, coverage and waste into rounded purchase units. Sheathing wasteAdd a selected waste allowance to a measured roof area.

Underlayment and barriers

Underlayment rollsEstimate rolls from roof area, roll coverage and waste. Ice and water barrierEstimate barrier rolls for a measured protected strip.

Edges, caps and flashing

Starter strip bundlesRound a measured starter-strip length up to product coverage. Ridge cap quantityEstimate ridge or hip cap bundles from covered length. Drip edge quantityAdd eave and rake lengths and round up to stock coverage. Valley flashing quantityAdd valley runs and round up to selected piece length.

Nails, vent pieces and battens

Roofing nail quantityMultiply bundle, shingle and nailing inputs, then size nail boxes. Ridge vent lengthRound a measured ridge length up to stock vent pieces. Roof batten quantityEstimate battens from gauge, plane length, waste and stock length.

Membrane and cutting

Flat roof membrane layoutEstimate repeated membrane strips and side-seam footage. Hip and valley sheet cutsPlan hip and valley cuts from a measured drawing and product dimensions. Planning guide

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