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

¥149637

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🔥 Seal smarter, not harder — the pro’s choice for flawless gaps!

EXPANDS UP TO 3 INCHES - Fills large gaps and cracks with airtight, water-resistant foam for lasting insulation.
FAST TACK FREE APPLICATION - Be tack-free in under 10 minutes, speeding up your project workflow effortlessly.
ULTIMATE FIREBLOCK PROTECTION - Orange foam instantly identifies fire-resistant seal for peace of mind.
REUSABLE GUN APPLICATOR SYSTEM - 24oz cans designed for gun use, allowing precise control and multiple uses—no waste.
VERSATILE MULTI SURFACE BONDING - Seals gaps on wood, metal, masonry, glass, and plastics with durable adhesion.

Great Stuff Pro Dow Gap and Crack is a professional-grade, orange polyurethane foam sealant that expands up to 3 inches to fill and insulate gaps. Recognized as a fireblock sealant, it bonds to most building materials including wood, metal, glass, and masonry. Tack-free in minutes and trimmable within an hour, it offers fast, durable, water-resistant sealing ideal for residential and commercial applications. Sold in a case of 12 reusable 24oz cans designed for gun application, it delivers precision and efficiency for pros and serious DIYers alike.

Specifications

ASIN	B0044UYJXG
Brand	Great Stuff Pro
Brand Name	Great Stuff Pro
Color	orange
Compatible Material	Glass
Customer Reviews	4.6 out of 5 stars 285 Reviews
Item Form	Foam
Item Weight	24 Ounces
Item form	Foam
Item weight	24 Ounces
Manufacturer	Dow
Material	foam
Material Type	foam
Part Number	GSGC24-12
Surface Recommendation	Pipe
UPC	850012619963
Water Resistance Level	Water Resistant
Water resistance level	Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥149637

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

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