What is the R-rating on this?

Hi Dave! The initial R-value is 4.3 per inch and the aged R-value is 3.7. Good luck with your project!

Is closed or open cell foam?

Hi Meggi, This is a closed cell foam.

can this be used to fill holes between dry wall and hardwood, then covered with molding? Will the foam crack if a nail goes into it?

This is the perfect place to use this foam! I did this in my own home recently when we were installing new baseboard. You can apply the foam in the gap, and like others said be careful about overfilling because it does expand quite a lot. I also highly recommend buying our Cleaner / Amazon # B0002YWRG4 because you can spray this on a paper towel and clean up foam when it's still wet. It's a useful product for any project using GREAT STUFF foams. Don't worry if it puffs out too much, you can cut, sand, caulk or paint this foam once fully cured/dry. The foam will not crack if you nail through it but it also is not structural so you'll need to make sure you're nailing the molding into the wall. Good luck with your project!

is it safe around a hot baseboard heater pipe coming into the room through the floor?? thats where mice get into the rooms from under the floor

I looked at the can and it doesn't really say. The stuff before it cures is full of flammable gas but it doesn't say anything about keeping the cured material from heat. Now, that being said, (I'm putting on my professional chemist hat) Great Stuff is a polyurethane. And polyurethanes are flammable. So, I would be concerned if the area got very hot, say over 150F. Hope this helps.

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Great Stuff 157911 Insulating Foam Sealant, 20 Ounce, Ivory

Great Stuff 157911 Insulating Foam Sealant, 20 Ounce, Ivory

Product ID: 271576377

Details

Brand
Great Stuff
Item dimensions L x W x H
7 x 7 x 24.1
Item weight
0.4 Kilograms
Material
Polyurethane
Style
Gaps & Cracks

🧱20 oz expanding foam

🌡️airtight & moisture-resistant seal

🛠️multi-surface compatibility

R1198

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Description

🛡️ Seal smart, save energy, and stop drafts like a boss!

READY WHEN YOU ARE - 20-ounce can designed for easy, precise application—get the job done fast.
SMOOTH IVORY FINISH - Blends seamlessly with most surfaces for a clean, professional look.
VERSATILE APPLICATION - Perfect for both interior and exterior use on walls, sinks, tiles, and floors.
ENERGY EFFICIENCY BOOSTER - Creates an airtight, moisture-resistant barrier that slashes energy loss.
SEAL EVERY GAP LIKE A PRO - Expands to fill cracks and voids for superior insulation and draft prevention.

Great Stuff 157911 is a 20-ounce expanding polyurethane foam sealant that fills gaps, cracks, and voids with an airtight, waterproof seal. Its smooth ivory finish blends well with most surfaces, making it ideal for both interior and exterior insulation and air sealing tasks. Trusted by professionals and DIYers alike, it enhances energy efficiency and blocks drafts, rodents, and moisture effectively.

Specifications

ASIN	B0002YX98O
Best Sellers Rank	#66,129 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #383 in Hardware Sealers
Brand	Great Stuff
Brand Name	Great Stuff
Color	Ivory
Compatible Material	Glass
Customer Reviews	4.5 out of 5 stars 1,800 Reviews
Global Trade Identification Number	00074985001567
Included Components	Expanding foam sealant
Item Dimensions	7 x 7 x 24.1 centimeters
Item Form	Foam
Item Type Name	Insulating Foam Sealant
Item Weight	20 Ounces
Item dimensions L x W x H	7 x 7 x 24.1 centimeters
Item weight	20 Ounces
Manufacturer	Great Stuff
Material	Polyurethane
Material Type	Polyurethane
Model	157911
Number of Items	1
Part Number	157911
Style	Gaps & Cracks
Style Name	Gaps & Cracks
Supported Standards	ASTM C-920
Surface Recommendation	[At least some of: Wall, Sink, Tile, Floor]
UPC	074985001567
Unit Count	20 Ounce
Water Resistance Level	Waterproof
Water resistance level	Waterproof

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R1198

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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2 weeks ago

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