Will can spray overhead? switched recessed lights to cool led & want to fill wood box holding recessed light can to sop heat loss.

Since they recommend turning the can upside down to clear the gun for storage, it will not spray that way, however you can attach a length of clear tubing to the spray tip and get an overhead gap filled.

What is coverage at 1 inch thickness

Thank you for your interest in our product. The yield on this product is each can will cover 970 linear feet based on 3/8" bead of foam. Unlike the 2 part foams, this product is meant for gaps of 3" or less. Thank you

How many cans do I need to spray under my 21 inch acrylic tub?

you have not provided enough information to answer the question. Clarify the size of the area you want to place this foam. Do you plan to just fill the area under the bottom of the tub or completely around the total under side of the tub - bottom and side walls? Example for bottom of tub: 20 inches wide x 60 inches long x 4 inches high. Given these dimensions there is plenty of material to fill that area. If you plan to go around the sidewalls - you will need a few more cans which you can buy at a hardware store.

will it work on metal siding on concrete?

This will stick to both surfaces.

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Great Stuff Pro Dow Gap and Crack, 24oz Gun Foam (Case of 12) - 341557

Great Stuff Pro Dow Gap and Crack, 24oz Gun Foam (Case of 12) - 341557

Product ID: 680531595

Details

Brand
Great Stuff
Item form
Foam
Item weight
24 Ounces
Material
foam
Water resistance level
Water

🔥Fireblock sealant for enhanced safety

🧱Bonds to wood, metal, glass & more

⏱️Tack-free in 3-10 minutes for fast use

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S$569

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Seal smart, seal fast, seal like a pro!

GAP FILLING POWER - Expands up to 3 inches to seal large cracks and penetrations with airtight, water-resistant precision.
SPEEDY APPLICATION - Be tack-free in under 10 minutes and trim within an hour for a flawless finish every time.
PRO GRADE EFFICIENCY - Gun-applied system with reusable cans means less waste and more control on every project.
ULTIMATE FIRE SAFETY - Certified fireblock sealant with bright orange color for instant visual assurance.
MULTI SURFACE MASTERY - Adheres strongly to wood, metal, masonry, glass, and plastics—one foam to rule them all.

Great Stuff Pro Dow Gap and Crack is a professional-grade, orange polyurethane foam sealant designed for fireblocking and insulating gaps up to 3 inches. Compatible with multiple materials including wood, metal, and glass, it offers quick tack-free times and a reusable gun-applied system, making it the go-to choice for durable, water-resistant sealing in residential and commercial projects.

Specifications

ASIN	B0044UYJXG
Brand Name	Great Stuff Pro
Color	orange
Compatible Material	Glass
Customer Reviews	4.6 4.6 out of 5 stars (279)
Item Form	Foam
Item Weight	24 Ounces
Manufacturer	Dow
Material Type	foam
Part Number	GSGC24-12
Surface Recommendation	Pipe
UPC	850012619963
Water Resistance Level	Water Resistant

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