No Thermal Value for the Sagging, Wet crawl space Insulation

Rigid foam should replace the faltering fiberglass insulation to improve your comfort and provide energy savings, not to mention appearance.

Rigid foam should replace the faltering fiberglass insulation to improve your comfort and provide energy savings, not to mention appearance.

 

NoThermalValue

Batts do not perform well in crawl spaces

 

Fiberglass in crawl spaces easily takes in moisture. The material then clumps together and loses its R-value ability. Eventually it falls to the floor.

There are many homes with crawl spaces that are wet, sagging and have fallen insulation that does more harm than good.

Even though fiberglass batts can show results in walls upstairs, they get retain mass and moisture when installed in the crawl space ceiling. Especially where the space is vented to the outside.  The damp air eventually goes through the process of condensation which affects the sheathing and the joists.

 

 

New discovery on crawl space insulation

Newdiscovery

Rigid Foam does not falter

 

Fiberglass takes in moisture, rigid foam does not. Fiberglass falls out of place, rigid foam does not.  Rigid foam goes up against the crawl space walls as a part of the process of sealing.

Fiberglass was used in the past because it was cheap and widely available. But over time people learned that they created more problems than they solved. Now scientist, and engineers recommend that the area be sealed and encapsulated. Moreover they recommend rigid foam to do so.

The steps to sealing make sure that the air that might be too hot, too cold, moist will no longer get into the underneath crawl space. In the place of fiberglass between the joists, rigid foam is installed against the walls in the crawls space.

This is a perfect fit because it stops moisture, does not lose R-value and will stay in its place. Sealing and proper insulation the underneath of the house stays clean, dry, and gets a green seal of approval.

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