Could this work to seal cracks instead of a soundproofing caulk/sealant?

Hello. Caulking/Sealant is the best solution when it comes to "filling" a crack. On the other hand if you were looking to create more of a "seal", such as around a door frame, then this could possibly prove to be effective since it is sticky on one side and plastic backed on the other. Not sure how well it would hold up compared to regular foam tape.

Can I apply this product to the underside of a floor joist, and screw drywall through it?

Yes just put it up and screw the drywall as normal. I do recommend using 5/8 drywall for a better sound deadening effect but this stuff does help a lot.

I am soundproofing my ceiling. I am already installing mass loaded vinyl between the joist and the drywall. Will this tape improve things further?

If the sheetrock is screwed directly onto the vinyl, probably not and maybe worse (multiple air gaps can be worse). Consider QuietRock, heavier sheetrock (5/8"), or greenboard instead.

Could this work just as well for walls ?

It does work well for walls, but it is difficult to stick to vertical surfaces. You have to roll it or press it on firmly and sheetrock or cover the same day or sooner. It will tend to fall off if left overnight. Used it to isolate the noise from a large wine cellar cooler - it works well, especially with heavier greenboard. Exterior walls in same room did not have tape and they are very "live", the walls with the tape are very "dead".

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St. Gobain GGTAPE-1-7|16X100 Green Glue Noiseproofing Joist Tape, 1-7/16" x 100'

Product ID: 19272295

Details

Brand
Norton
Color
Green
Material
Polyurethane
Number of Items
1
Recommended Uses For Product
Indoor

🌿Improves energy efficiency

🔇Eliminates squeaking noise

🛠️1.44" wide precision tape

€ 168.07

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔇 Step into silence with Green Glue Joist Tape!

TRUSTED BY PROS - Saint-Gobain quality with top-rated customer satisfaction.
DURABLE GREEN SHIELD - Made from polyurethane, rubber, and vinyl for long-lasting performance.
ENERGY SMART INSULATION - Dampens sound while boosting your floor’s thermal efficiency.
SILENT FLOORS HAPPY HOME - Say goodbye to annoying squeaks with airtight noiseproofing.
QUICK SEAMLESS INSTALLATION - Fits effortlessly between joists and subflooring for fast setup.

Saint-Gobain’s Green Glue Noiseproofing Joist Tape (1-7/16" x 100') is a professional-grade, easy-to-install solution designed to eliminate floor squeaks by creating an airtight seal between joists and subflooring. Crafted from durable polyurethane, rubber, and vinyl, it also enhances energy efficiency by providing sound-dampening insulation, making it a must-have for quiet, comfortable, and energy-smart flooring projects.

Specifications

ASIN	B00MGCRUI0
Adhesive Format	Narrow Tape
Adhesive Location	Between Joists and Subflooring
Adhesive Side Count	1
Best Sellers Rank	#93,814 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #95 in Adhesive Transfer Tape
Brand Name	Norton
Color	Green
Compatible Material	Wood
Customer Reviews	4.4 4.4 out of 5 stars (72)
Item Dimensions L x W x Thickness	1.44"W x 1.44"Th
Item Resistance	Soundproof
Item Thickness	1.44 Inches
Manufacturer	Saint-Gobain
Material Type	Polyurethane, Rubber, Vinyl
Model	GGTAPE-1-7\|16X100
Number of Items	1
Other Special Features of the Product	Eliminates Squeaking
Part Number	GGTAPE-1-7\|16X100
Recommended Uses For Product	Indoor
Size Name	1-7/16"
Surface Recommendation	Floors
UPC	608729732167
Unit Count	1.0 Count
Water Resistance Level	Not Water Resistant

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€ 168.07

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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