Hot Topics: Adhesive Foam Board Insulation Hot Topics: Adhesive Foam Board Insulation

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If you're insulating your basement or garage, you want to make sure your project is long-lasting. Using polystyrene foam insulation boards are relatively inexpensive and are great for keeping out moisture and locking in air-conditioned or heated air. You'll want to make sure you find the right adhesive for the job to ensure your foam stays in place.

Original Post: Adhesive for Foam Board Insulation

psustang89 Member

What is the best adhesive for bonding foam board insulation to a basement concrete block wall? The wall is coated with Thoroseal. Thanks!

Highlights from the Thread

I like PL Premium but you need good ventilation. PL300 foam board adhesive is supposed to be good as well, but I've not used it.

XSleeper Member
PL300 is fine. The adhesive should specifically say its for foam or else the solvents may dissolve the foam.

sats2181 Member

You want to use PL300, foam board adhesive. The adhesive doesn't always stick to the foundation wall so to help that make sure you lean a piece of heavy material against it for at least 15 min to help facilitate the bond. Not all foundation walls are perfectly flat so the foam board may pop out in certain spots. Placing the heavy material will hold it down.

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