Calculating Your Siding Needs

Brad the Builder shares some tips and tricks on how to calculate your siding needs for your project.
  • How-Tos

Gathering accurate siding measurements is an important part of home renovation. Let Brad the Builder help you determine how much siding you’ll need for your house! Check out the video below or keep reading for more details.

Estimating your siding needs can sometimes look more difficult than it is. To perform a siding take-off, as we call it in the industry, all you need to do is follow a few simple steps!

Start by measuring the height and width of each wall of the building. Multiply each length and height measurement to find the square footage of each wall.

Wall 1: H X W = Total wall sq.ft.

Wall 2: H X W = Total wall sq.ft.

Wall 3: H X W = Total wall sq.ft.

Wall 4: H X W = Total wall sq.ft.

Then add them together to find the total square footage!

Wall 1 + Wall 2 + Wall 3 + Wall 4 = Total home sq.ft.

Triangular sections (like the gables) will begin the same, however, these sections square footage will be divided in half.

Gable 1: (H X W) /2 = Total gable sq. ft

Measure the height and width of each door and window, and subtract from the total.

Door 1: H X W = Total door sq. ft.

Window 1: H X W = Total window sq. ft.

Window 2: H X W = Total window sq. ft.

Total home sq. ft – (Door 1 + Window 1 + Window 2) = Final project sq. ft.

Once you’ve got your total square footage calculated, it’s very important to add 10% for potential waste. Ordering more material after the fact can be timely and you run the risk of the added product not being a perfect match.

For more information, visit our resource section at, and until next time!