Exterior Wall Insulation Types

Check garage walls and ceilings that are adjacent to conditioned spaces.

Exterior wall insulation types.

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. 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. When you are insulating two by four 2x4 and two by six 2x6 framed exterior walls and want to use fiberglass insulation what thickness is best the question becomes all more critical because of the permanent nature of wall assemblies and wall insulation. Best for floors foundation and basement walls interior and exterior wall sheathing and low sloped ceilings.

Once the insulation is in the wall and sealed up with drywall it is not easy to change out. Check behind knee walls which are walls between living spaces and the garage or attic. They are very effective in exterior wall sheathing interior sheathing for basement walls and special applications such as attic hatches. Foam board or insulating boards are rigid panels of insulation that have a high r value.

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. Exterior walls and floors.