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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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
20 Ounces
Material
Polyurethane
Style
Gaps & Cracks

💧Waterproof, moisture-resistant seal

🧱Expands to fill gaps & cracks

❄️Improves energy efficiency & blocks drafts

€ 73.90

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

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Description

🛠️ Seal smart, save energy, and stay cozy with Great Stuff!

VERSATILE 20 OUNCE CAN - Generous size for multiple projects, perfect for both interior and exterior use.
SEAMLESS AIRTIGHT BARRIER - Expands on contact to seal cracks and voids, locking out drafts and moisture.
USER FRIENDLY APPLICATION - Easy spray nozzle reaches tight spaces—just apply sparingly and watch it expand.
IVORY FINISH DISCREET LOOK - Blends effortlessly with most surfaces for a clean, professional appearance.
ENERGY SAVING INSULATION BOOST - Enhances home comfort by reducing heat loss and cold air infiltration.

Great Stuff 157911 Insulating Foam Sealant is a 20-ounce polyurethane expanding foam designed to fill gaps, cracks, and voids with a waterproof, airtight seal. Its ivory color blends well with most surfaces, making it ideal for both interior and exterior applications. Trusted for improving energy efficiency by blocking drafts and moisture, this foam is a must-have for professional-grade insulation and air sealing projects.

Specifications

ASIN	B0002YX98O
Best Sellers Rank	#61,318 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #354 in Hardware Sealers
Brand Name	Great Stuff
Color	Ivory
Compatible Material	Glass
Customer Reviews	4.5 4.5 out of 5 stars (1,813)
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
Manufacturer	Great Stuff
Material Type	Polyurethane
Model	157911
Number of Items	1
Number of Packs	1
Part Number	157911
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

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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€ 73.90

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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