Should Exterior Walls Be 2×4 Or 2×6?


Modern conventional home building normally makes use of 2x4 lumber (top line above, second from left) in constructing exterior walls. But 2x6 framing, which is a little more than 1.5 times wider, is a common upgrade and is required by some local building codes.


Yes. Two exterior walls constructed with 2×6 and 2×4 respectively, without any added foam or other insulation around the outside, show that 2×6 is superior to 2×4 exterior walls.

When to use 2x6 framing for walls

2x4 VS. 2x6 Construction. Which One is Better?

2x4 vs 2x6 Construction

Frequently Asked Questions

What is cheaper 2x4 or 2x6?

-The difference in cost between 2x4 and 2x6 treated is $0.32 per linear foot. -For the treated bottom plate, that's $198.90. -The difference in cost between regular 2x4 and 2x6 this month is $0.14 per linear foot.

How thick are exterior walls in a house?

External walls are generally 10 to 12 inches wide. Homes that are built with rammed earth or heavy exterior masonry will have thicker walls. There is no limit to how thick an exterior wall can be.

Which is better 2x4 or 2x6 interior wall?

He said that whether you frame with wood or steel the wall should be 2x4 with extra insulation on the exterior because of the dew point. With a 2x6 wall the dew point is at the middle of the wall whereas with 2x4 and insulation it would be much closer to the outside of the wall cavity.

Which is better 2x4 or 2x6 studs?

There is a school of thought that the larger 2x6 studs will conduct less heat outside than 2x4 members, both because there are fewer of them and because they are thicker, front to back. This is logical, and makes sense, but will not be nearly as important as the insulation factor in the walls and windows.

When do you need 2 x 6 wall framing?

On occasion, local authorities will impose requirements for 2 x 6 wall framing due to extremely heavy snow loads, high speed winds and for maximum wall insulation values. Note: if your plan calls for 2 x 4 framing and 2 x 6 is required, you can usually just substitute the 2 x 6 material for studs, wall top and bottom plates.

Add a Comment

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.