Closed-cell polyurethane spray foam has some outstanding qualities it has a high R-value, it expands into hard-to-reach areas, and it's resistant to water, mold and insects. Heck, it can even add structural support.
However, it is expensive, so we spoke with a couple of manufacturers and some pro insulators about where and when to use it, when to call in a pro with a truck-mounted unit, and when a DIY kit is the best option. We also assembled some great installation tips to help you spray safely and get the best value for your investment.
We used the Froth-Pak Insulation 210 two-component, low-pressure kit. It has an R-value of 6 per inch.
FOAM IS MEASURED IN BOARD FEET
Most two-part spray foam kits have a number assigned to them: 120, 200, 210, 600, etc. That number usually indicates how many board feet the foam will cover. So, a 200 kit will cover 200 sq. ft. at 1 in. thick.
SEALANT VS. INSULATION
Closed-cell spray foam sealant looks just like foam insulation, but it's not the same thing. Sealant is formulated to seal cracks and voids, or the perimeter of stud spaces before you install fiberglass insulation. Sealant should not be used to fill larger cavities because it loses its fire-retardant properties when applied in thick layers.
OPEN-CELL VS. CLOSED-CELL FOAM
Two kinds of spray foam are available: open and closed. Closed-cell foam costs more than open-cell, but the properties of closed-cell make it more popular. It's more resistant to water and can provide an air and vapor barrier (depending on the thickness). It also provides nearly double the R-value per inch over open-cell.
Open-cell insulation has one superior property over closed-cell foam-it works great as a sound barrier. It's often used under stairs and between walls and floors for that reason.
TRUCK VS. KIT
Diese Geschichte stammt aus der March 2023-Ausgabe von Family Handyman.
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Diese Geschichte stammt aus der March 2023-Ausgabe von Family Handyman.
Starten Sie Ihre 7-tägige kostenlose Testversion von Magzter GOLD, um auf Tausende kuratierte Premium-Storys sowie über 8.000 Zeitschriften und Zeitungen zuzugreifen.
Bereits Abonnent? Anmelden
7 Bicycle Maintenance Tips
Keep your bike in tiptop shape and ride safe!
SETTING FENCE POSTS WITH EXPANDING FOAM
Any fence builder knows you need strong posts for a strong fence, and that means backfilling the postholes with a dense, hard material other than dirt.
PEBBLE MOSAIC STEPPING STONES
COLLECT SOME RIVER ROCK AND MAKE YOUR OWN UNIQUE STEPPINGSTONE PATH
EARTH-FRIENDLY WEED KILLERS
HEALTHIER CHOICES FOR HUMANS AND THE ENVIRONMENT
DIY! HYDROPONIC GARDEN
FRESH VEGETABLES AT YOUR FINGERTIPS
GROW MINI VEGETABLES
GROW A GARDEN IN A TINY SPACE!
BUILD A VERTICAL GARDEN
TIME TO GROW UP!
MODERN WATER FOUNTAINS
A SPLASH OF PEACE FOR YOUR PATIO
9 ALTERNATIVE USES FOR SAWDUST
Every fully stocked wood shop has a table saw. You can usually find a pile of sawdust under it, even if it's used only occasionally. If a shop has a belt sander or band saw, there's probably another pile of finer sawdust under that. Even people without stationary tools have sawdust accumulation on their workbenches.
INSULATE WITH FOAM
IT'S A GREAT ALTERNATIVE TO FIBERGLASS