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House Wrap Calculator

Estimate house wrap area and optional roll count from wall height, total wall length, and waste allowance.

Updated April 15, 2026
Free online tool
Planning and research use

Why this page exists

Exterior wall planning gets easier when wall dimensions turn into one house-wrap coverage number instead of being guessed from roll labels alone. This calculator helps visitors estimate total house wrap area and optional roll count from wall height, total wall length, waste allowance, and optional roll coverage.

Interactive tool

Run the estimate

Enter your numbers and read the result first, then use the sections below to understand what affects the outcome.

Calculator

House wrap calculator

Estimate house wrap area and optional roll count from exterior wall dimensions and waste allowance.

Result

1,663.2 sq ft

Estimated house wrap area based on wall height times total wall length, with waste added and optional roll-count math.

Total wall area1,512.0 sq ft

Adjusted area with waste1,663.2 sq ft

Estimated rolls needed2 rolls

Roll coverage used900.0 sq ft

9.00 feet of wall height across 168.00 feet of total wall length gives about 1,512.0 square feet of wall area before waste.
Adding 10.0% for overlap and waste brings the planning total to about 1,663.2 square feet.
At about 900.0 square feet per roll, that points to roughly 2 rolls of house wrap.

This is a practical wall-coverage estimate, not a full envelope takeoff. Openings, overlaps, starter strips, corner detailing, and product-specific install requirements can all change the real material need.

Planning note

Last updated April 15, 2026. Use this tool to compare scenarios and plan ahead, then confirm important details with the lender, employer, insurer, contractor, or other qualified provider involved in the final decision.

How it works

What the calculator is doing

Enter wall height and total wall length.

Add a waste allowance to make the estimate more practical.

If you know the roll coverage, add it to estimate how many rolls may be needed.

Understanding your result

This is a practical coverage estimate, not a full envelope takeoff. Openings, overlaps, starter strips, and detailing can all change real material use.

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Examples

Ways people use this tool

Example scenarios help turn a quick estimate into a more useful comparison or planning step.

Estimate wall coverage before ordering rolls

A quick area estimate can make it easier to compare roll options before buying house wrap.

Add overlap and waste

A waste allowance can make the planning number more realistic when overlaps and cuts are expected.

Use it with exterior project tools

House-wrap estimates often fit naturally beside siding, paint, and soffit tools for exterior planning.

FAQ

Common questions

How is house wrap coverage estimated here?

The calculator multiplies wall height by total wall length to estimate wall area, then adds waste and optionally divides by roll coverage to estimate roll count.

Does the calculator subtract windows and doors?

No. It uses full wall area so the result stays simple. That can still be practical because overlaps, detailing, and waste often offset some opening area.

Why might the real number of rolls differ?

Roll width, overlap patterns, openings, corners, penetrations, and manufacturer-specific installation details can all change real material use.

Related tools

Keep comparing

Use these related tools to compare nearby scenarios, check a second estimate, or keep narrowing down the right decision.

Home ToolsUpdated April 11, 2026