*
Does anyone out there have any experience with an expanding foam product called POLYMASTER. It is a product advertised for use in masonry cavities as an insulator/soundproofer. I was directed to an installer by a company that provides polyurethane foam when we determined that the expanding nature of their product would not allow for a retrofit into my existing closed stud cavities. I was considering blown cellulose, but the installer agrees that the polymaster can be shot through holes drilled into the top plates accessed through the attic, reducing the need for interior wall holes. My concerns are: 1) Will product deliver advertised R- value of 4.6/inch? 2)Can it get wet? 3)Is it better than blown cellulose? Has anyone out there had experience with this product? BUILDER BEAVER
Discussion Forum
Discussion Forum
Up Next
Video Shorts
Featured Story
Old masonry may look tough, but the wrong mortar can destroy it—here's how to choose the right mix for lasting repairs.
Featured Video
Highlights
Fine Homebuilding Magazine
Fine Home Building
Follow
-
Fine Homebuilding
Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.
Start Free Trial Now -
GBA Prime
Get instant access to the latest developments in green building, research, and reports from the field.
Start Free Trial Now
- Home Group
- Antique Trader
- Arts & Crafts Homes
- Bank Note Reporter
- Cabin Life
- Cuisine at Home
- Fine Gardening
- Fine Woodworking
- Green Building Advisor
- Garden Gate
- Horticulture
- Keep Craft Alive
- Log Home Living
- Military Trader/Vehicles
- Numismatic News
- Numismaster
- Old Cars Weekly
- Old House Journal
- Period Homes
- Popular Woodworking
- Script
- ShopNotes
- Sports Collectors Digest
- Threads
- Timber Home Living
- Traditional Building
- Woodsmith
- World Coin News
- Writer's Digest
Replies
*
Does anyone out there have any experience with an expanding foam product called POLYMASTER. It is a product advertised for use in masonry cavities as an insulator/soundproofer. I was directed to an installer by a company that provides polyurethane foam when we determined that the expanding nature of their product would not allow for a retrofit into my existing closed stud cavities. I was considering blown cellulose, but the installer agrees that the polymaster can be shot through holes drilled into the top plates accessed through the attic, reducing the need for interior wall holes. My concerns are: 1) Will product deliver advertised R- value of 4.6/inch? 2)Can it get wet? 3)Is it better than blown cellulose? Has anyone out there had experience with this product? BUILDER BEAVER