How Many Sq Ft in a Roll of Tyvek? 2026 House Wrap Guide

A standard 9 ft x 100 ft roll of DuPont Tyvek HomeWrap covers 900 square feet, because roll coverage equals width in feet times length in feet (9 x 100 = 900). The smaller 3 ft x 100 ft roll covers 300 sq ft, the 3 ft x 165 ft roll covers 495 sq ft, the 9 ft x 150 ft contractor roll covers 1,350 sq ft, and the 10 ft x 100 ft roll covers 1,000 sq ft. Plug your wall measurements into the House Wrap Calculator to convert square feet into the exact number of rolls, tape, and cap nails you need.

When I wrapped my first two-story addition back in 2014, I bought two 9 ft x 100 ft rolls — 1,800 sq ft on the label — for a house with 1,720 net square feet of wall. I forgot that every horizontal seam loses 6 inches to a shingle-style overlap and every corner loses 12 inches more. Two rolls only gave me about 1,636 usable square feet after that 10% overlap loss, so I came up 84 square feet short and made a second hardware-store run for a third roll. That mistake is the whole reason this guide leads with usable coverage, not the number printed on the wrapper.

This guide breaks down every Tyvek roll size by square footage, shows how overlap eats into usable coverage, and walks through how many rolls a real house actually needs. For the wall area itself, the Square Footage Calculator handles the geometry first.

Tyvek Roll Sizes and Square Footage

DuPont Tyvek HomeWrap ships in a handful of standard widths and lengths. Coverage is simple multiplication: roll area = width (ft) x length (ft). The width sets how tall a band you can hang in one pass, and the length sets how far it runs before you start a new roll.

The 9 ft x 100 ft roll is the residential workhorse, and 900 sq ft is the number most material lists and online estimators assume by default. The 9 ft x 150 ft contractor roll carries 1,350 sq ft, which is exactly 50% more than the 100 ft version while cutting the number of mid-wall vertical seams in half. The narrow 3 ft rolls exist for retrofits, sill bands, and tight repairs where a 9 ft band would be wasteful.

Why Usable Coverage Is Less Than Roll Square Footage

The square footage on the label is the raw material in the roll. It is not the wall area you can cover, because house wrap must overlap itself at every seam to shed water. Building codes and DuPont installation instructions call for a minimum 6-inch overlap on horizontal seams and 6 to 12 inches on vertical seams, plus a 12-inch wrap around every corner.

Add those overlaps up across a whole house and they typically consume about 10% of the roll. Some crews working tall or cut-up walls plan for 15%. To get usable coverage, divide the nominal square footage by 1 plus the overlap fraction.

Every usable figure above is the nominal coverage divided by the overlap factor: 900 / 1.10 = 818, and 900 / 1.15 = 783. This is the single most common estimating error on a wrap job, and it is exactly why my 2014 addition came up short. Treat the 818 sq ft number, not the 900, as what one residential roll actually protects.

How Many Rolls of Tyvek Does a House Need?

Rolls needed is net wall area, plus overlap, divided by the roll's square footage, then rounded up. The formula is rolls = ceil(net wall area x 1.10 / roll sq ft). Net wall area is the perimeter times wall height, minus window and door openings, plus any triangular gable-end area above the top plate.

The table below runs four common homes through that math for both the 900 sq ft roll and the 1,350 sq ft contractor roll. The +10% column is net area times 1.10.

Each roll count is the +10% area divided by roll size, rounded up: 913 / 900 = 1.01, which rounds to 2 rolls; 3,168 / 900 = 3.52, which rounds to 4 rolls. The two-story home shows why the contractor roll pays off: 3,168 / 1,350 = 2.35 rounds to 3 rolls instead of 4, saving a roll and dozens of feet of vertical seams.

The small ranch is the trap. Its 913 sq ft of needed coverage is barely over one 900 sq ft roll, so it rounds up to 2 even though the second roll is almost entirely leftover. On a job that tight, the 1,350 sq ft contractor roll covers the whole house with one roll and material to spare.

Worked Example: A 40 x 50 ft Two-Story

Take a rectangular two-story home measuring 40 ft x 50 ft with 9 ft ceilings on each floor, 10 windows, 3 doors, and 2 gable ends 30 ft wide rising 5 ft above the top plate.

1. Perimeter: 40 + 50 + 40 + 50 = 180 ft.
2. Wall height: two 9 ft stories = 18 ft.
3. Gross wall area: 180 x 18 = 3,240 sq ft.
4. Subtract openings: 10 windows x 15 sq ft = 150 sq ft, and 3 doors x 20 sq ft = 60 sq ft, for 210 sq ft removed.
5. Add gables: 2 x (30 x 5 / 2) = 150 sq ft.
6. Net wall area: 3,240 - 210 + 150 = 3,180 sq ft.
7. Apply 10% overlap: 3,180 x 1.10 = 3,498 sq ft.
8. Divide by roll size: 3,498 / 900 = 3.89, rounded up to 4 rolls of 9 ft x 100 ft Tyvek.

Switch to 9 ft x 150 ft contractor rolls and the same 3,498 sq ft divides into 1,350 to give 2.59, which rounds to 3 rolls. You also need about 1 roll of contractor seam tape per 2 rolls of wrap and roughly 1 cap nail per square foot, which is ceil(3,498 / 200) = 18 boxes of 200. The House Wrap Calculator runs all of this automatically once you enter the perimeter, height, and openings.

Tyvek vs Generic House Wrap by the Roll

Tyvek is the brand most people picture, but the square-footage math is identical for any woven or non-woven house wrap — only the price, UV rating, and water-holdout numbers change. A 9 ft x 100 ft roll is 900 sq ft whether it says DuPont on it or not.

Per the DuPont Tyvek installation guidelines, HomeWrap can sit exposed for up to 120 days before siding goes on; many budget wraps are rated for only 60 to 90 days before UV degrades their water resistance. If your siding schedule slips, that exposure window matters more than the price per roll.

Don't Forget Tape, Nails, and Flashing

A roll of wrap is only part of the order. Plan one roll of contractor-grade seam tape for every two rolls of wrap, and budget about one cap nail or cap staple per square foot of coverage — roughly one 200-count box per 200 sq ft. Generic duct tape and packing tape fail within a year or two from UV and temperature cycling, so use a tape rated for polyethylene wraps such as Tyvek Tape, 3M 8067, or Zip System tape.

For the siding that goes over the wrap, the Siding Calculator estimates panels and squares, and if you are also detailing the wall cavity, the Insulation Calculator handles batts and R-value. House wrap is the drainage plane between those two layers, so getting its coverage right protects everything behind it.

Related Articles

• How Much Does Siding Cost in 2026? — The wrap is step one; this breaks down what the siding over it actually costs per square foot.
• Siding Installation Cost by Material and Labor — Labor and material splits for the exterior job your house wrap is prepping for.
• How Much Does Insulation Cost in 2026? — Pairs with house wrap to complete the wall assembly behind your siding.

Related Calculators

• House Wrap Calculator — Converts perimeter, height, and openings into exact rolls, tape, and cap nails.
• Square Footage Calculator — Measures wall area, gable triangles, and total square footage before you order.
• Siding Calculator — Estimates siding squares and cost for the layer that goes over the wrap.
• Insulation Calculator — Sizes wall insulation and R-value to finish the assembly.

Frequently Asked Questions

How many sq ft in a roll of Tyvek?

A standard 9 ft x 100 ft roll of Tyvek HomeWrap holds 900 square feet, found by multiplying the 9 ft width by the 100 ft length. The 3 ft x 100 ft roll holds 300 sq ft, the 9 ft x 150 ft contractor roll holds 1,350 sq ft, and the 10 ft x 100 ft roll holds 1,000 sq ft.

How many square feet does a 9x100 roll of Tyvek cover?

A 9 ft x 100 ft roll contains 900 nominal square feet, but it covers only about 818 square feet of wall once you account for the typical 10% lost to seam and corner overlaps. Use 818 sq ft as the usable figure when estimating how many rolls a house needs.

What is the most common Tyvek roll size?

The 9 ft x 100 ft, 900 sq ft roll is the most common residential size and the default assumption in most house wrap estimators. Contractors on larger homes often switch to the 9 ft x 150 ft, 1,350 sq ft roll to cut the number of vertical seams in half.

How many rolls of Tyvek do I need for a 2,000 sq ft house?

A typical 2,000 sq ft single-story home has roughly 1,380 net square feet of wall, which becomes 1,518 sq ft after a 10% overlap allowance and needs 2 rolls of 9 ft x 100 ft Tyvek. A two-story home of the same floor area can need 4 rolls because the wall height doubles.

How much overlap do I lose on a roll of house wrap?

House wrap overlaps about 6 inches at horizontal seams, 6 to 12 inches at vertical seams, and 12 inches around corners, which together consume roughly 10% of each roll. That is why a 900 sq ft roll protects only about 818 square feet of actual wall.

Is a 9x150 contractor roll worth it over two 9x100 rolls?

A single 9 ft x 150 ft roll holds 1,350 sq ft versus 1,800 sq ft from two 9 ft x 100 ft rolls, so two short rolls carry more total material. The contractor roll wins when it covers your whole job in one roll, eliminating a mid-wall seam and reducing leftover waste, as it does on most homes under 1,200 net square feet.

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This article provides general information for educational purposes. Verify roll dimensions and exposure limits against current DuPont Tyvek product data, and consult a licensed contractor for structural and code questions.