What Type Of Insulation To Use On Foundation Walls

It is more effective to install insulation over the surface of the blocks either on the exterior or interior of the foundation walls.

What type of insulation to use on foundation walls.

Protect the above grade portion of the insulation from physical abuse and sunlight with one of these materials. Turn off the electricity then remove an electrical outlet cover for a view of exterior insulation. Check garage walls and ceilings that are adjacent to conditioned spaces. R 7 5 scored squared edge rigid foam board insulation sheathing.

Foam board or rigid foam panels best for. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Foam board or insulating boards are rigid panels of insulation that have a high r value. Simple payback is typically in the range of 6 months for a simple do it yourself installation to 20 years for professionally installed insulation.

Whether you want to insulate a floor or an unvented. Unfinished walls such as foundation walls and basement walls floors and ceilings. Install rigid foam rated for soil contact type ii eps type ix eps or xps vertically up against the concrete. The type of materials used the application method and the extent of work all affect the overall cost.

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. Check behind knee walls which are walls between living spaces and the garage or attic. Best for floors foundation and basement walls interior and exterior wall sheathing and low sloped ceilings. I would use at least 2 inches in a warm climate and 3 or 4 inches in a cold climate.

Because they have a high r value and can be used nearly anywhere in your home foam boards are one of the most common types of insulation. In most wall applications you will use r 13 or r 15 kraft faced fiberglass insulation rolls for these two by four stud walls. While rated differently these two types of insulation are close enough in thickness that they can both fit into modern two by four wall systems. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.