External Wall Insulation Types

Adding insulation to a wall will change the place where the dew point occurs.

External 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. The thickness of thermal insulation is dependent on whatever type is required in order to create. Gypsum exterior wall sheathing. It s perfect for solid wall buildings where cavity insulation is impossible and internal insulation would mean sacrificing too much space.

While not as popular as other types of sheathing this material does have some particular uses that keep it in business. External wall insulation is fast becoming one of the most popular ways to insulate a home. Spray foam is one of the more unique wall insulation types. 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.

Placing insulation on the exterior has the added advantage of containing the thermal mass of the blocks within the conditioned space which can moderate indoor temperatures. External wall solutions comprise of an insulation layer fixed to the existing wall with a protective render or decorative finish. It is more effective to install insulation over the surface of the blocks either on the exterior or interior of the foundation walls. It may be combined with fiberglass or it may simply be made of gypsum and given a waterproof exterior finish.

In most cases it is slightly inside the external surface. 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. Dry cladding offers a wide range of finishes such as timber panels stone or clay tiles brick slips or aluminum panels. Once the insulation is in the wall and sealed up with drywall it is not easy to change out.

Some spray foam offers twice the r value of traditional batt insulation making it a useful option for insulating shallow spaces. Spray foam wall insulation. The most common insulation materials are fiberglass cellulose and foam. The effect of external insulation is to warm the wall and this in turn moves the dew point outwards towards the colder external air thereby reducing the risk of condensation appearing on the internal surface.

It starts out as a liquid during the installation process and hardens into thick foam after a few minutes. Insulation types include loose fill batts rolls foam board spray board and vapor barriers.