How to do an air space behind siding / Guides

Siding Choices - Board and batten siding
Exterior cladding

Choosing the right exterior siding for fitting, cost comparisons & appearance

...an air space and drainage plane. One of the cheapest and most effective spacers can be a dimpled foundation membrane cut into 2" strips. This method allows for an air space, but also allows vertical drainage, where a strip of solid wood limits air flow and drying. Brick and stone exterior finishes for homes ...

Installing Siding Correctly
Exterior cladding

How to install siding

...does accumulate behind siding a chance to drain away harmlessly. The air space between siding and sheathing should also allow humid air to escape. In order for both of these actions to take place, when siding is installed correctly there needs to be a continuous space behind siding where water can drain and air can flo...

Tyvek home wrap left exposed to wind and UV rays
Air and vapour barriers

Choosing the right house wrap / weather barrier, which is best?

...spacer in back of it so water can still drain and air can still rise. Without that space behind it, horizontal strapping can lead to a small amount of standing water that can saturate building materials. That gap in a rain screen doesn't need to be significant, just enough for water to drain and air to rise. If the w...