Exterior Wall Insulation Types

Exterior walls and floors.

Exterior wall insulation types.

It starts out as a liquid during the installation process and hardens into thick foam after a few minutes. An external wall insulation system or ewis is a thermally insulated protective decorative exterior cladding procedure involving the use of expanded polystyrene mineral wool polyurethane foam or phenolic foam topped off with a reinforced cement based mineral or synthetic finish and plaster. R values r values vary based on the type thickness and density of the material being used. Check garage walls and ceilings that are adjacent to conditioned spaces.

The most effective places to add insulation to older homes are exterior walls attics basements and crawl spaces. They provide good thermal resistance up to 2 times greater than most other insulating materials of the same thickness and reduce heat conduction through structural elements like wood and steel studs. Some spray foam offers twice the r value of traditional batt insulation making it a useful option for insulating shallow spaces. Turn off the electricity then remove an electrical outlet cover for a view of exterior insulation.

Spray foam is one of the more unique wall insulation types. Installing this type of insulation is an inexpensive and diy friendly project since the materials are designed to fit into the standard width between wall studs attic rafters and floor joists. Check behind knee walls which are walls between living spaces and the garage or attic.