For more information on the benefits of having an air space behind siding see all about rainscreens.
How to insulate lap siding.
Using proper siding insulation.
Insulation must keep the area between the insulation and the walls free of insects dirt and moisture.
Add flat rigid insulation to the wall before the siding is installed.
There are three primary ways to add insulation to a home when siding is installed.
Installing foam board insulation under vinyl siding today more than ever before homes are being built with foam board insulation installed on the outside of the sheathing and under the siding.
Install insulated vinyl siding.
No matter what type of insulation you choose though you need to create an air space between the back of the siding and the insulation.
This detail is used with both new construction and also with renovation work.
Blow insulation into the cavity.
Siding and insulation have improved greatly but the finest siding is not good enough without proper insulation.
Luckily if high levels of energy savings is your goal any combination of these solutions can be used to increase energy efficiency.
There are several possible ways to insulate this type of wall.