I used the mesh tape for Durock and went over all joints with the mortar mix I planned to use installing my tiles. Let the mortar dry completely. Then, just follow the directions on the bucket. I tackled a shower surround with two large niches for my first tile job. This bucket was plenty for two coats on everything as well as a section on the floor in front of the shower. Great product and easy to use. Be sure to follow the directions carefully.

USG DUROCK Brand Liquid Waterproofing Membrane 1 Gallon

Q: Can this be used to water proof a leak on existing shower tile?

No. This product is for waterproofing the substrate behind the tile. You may need to peel off the tile to get to the substrate. But it seems you need to find the source of the leak first then use this product as part of the repair.

Q: I have cement subfloor in my shower . Can I use this instead of a shower pan liner?

Hi, A liner would be preferable, but this membrane will work too, assuming the concrete is stable, there is a natural slope to the drain and there are no breaches. If you use a Durock shower installation kit it adds a natural slope to a center drain installation. That would be preferable then use the Durock membrane over the top before using mastic and tiling.

Q: Is this like flex seal liquid?

If you are referring to the “flex seal brand” sealer that is on the market it doesn’t compare.This liquid waterproof membrane is like a very thick paint that goes on smooth with roller or brush.this is a very good product that I have used on several occasions..... it provides excellent waterproofing qualities if used as directed p,usually two coats will do the trick.

Product ID: 514739511

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Details

Material
Acrylic
Brand
USG Interiors
Style
Compact
Item Weight
0.01 Ounces
Compatible Material
Stainless

💧Low perm rating ensures superior waterproofing

⏱️Fast drying for quick project completion

🛡️Anti-fracture protection up to 1/8 inch

Frequently Bought Together

USG DUROCK Brand Liquid Waterproofing Membrane 1 Gallon

XFasten Waterproofing Membrane Sheet, 6” x 75 Ft Shower Waterproofing Membrane Tape for Underlayment Tile, EPDM Underlayment, Cement Board Tape

One Sight Waterproofing Membrane Fabric, 6 Inch X 75 Foot Roll Anti-Fracture Membrane Fabric, Non-Woven Waterproof Fiberglass Mesh Tape for Bathroom Shower Walls, Floors, Tiles

Description

💧 Seal the deal with USG Durock – waterproofing that works as hard as you do!

RAPID DRYING POWER - Get back to business faster with a fast-dry formula that slashes wait times.
CRACK DEFYING SHIELD - Protect surfaces from shrinkage and non-structural cracks up to 3mm deep.
VERSATILE APPLICATION - Roll, brush, trowel, or spray—flexible methods for any project style.
CERTIFIED WATERPROOFING - Meets ASTM E96 standards with a low perm rating of 0.38 for unbeatable moisture defense.
MULTI SURFACE COMPATIBILITY - Ideal for floors, walls, countertops, and tile surfaces—one product, endless possibilities.

USG Durock Liquid Waterproofing Membrane is a fast-drying, acrylic-based solution designed for professional-grade waterproofing. It offers anti-fracture protection up to 1/8 inch, a low perm rating of 0.38 per ASTM E96, and versatile application methods including rolling, brushing, troweling, and spraying. Perfect for floors, walls, countertops, and tile surfaces, it ensures durable moisture resistance and quick project turnaround.

Specifications

Material	Acrylic
Brand	USG Interiors
Style	Compact
Item Weight	0.01 Ounces
Compatible Material	Stainless Steel
Water Resistance Level	Waterproof
Item Form	Liquid
Supported Standards	ASTM E96
UPC	081099039591 617070860771
Net Quantity	3785.41 millilitre
Colour	clear
Surface Recommendation	Tile
Manufacturer	USG
Item Weight	0.28 g
Package Dimensions	19.81 x 19.71 x 19.2 cm; 0.28 g
Item part number	0
Are batteries included?	No

Have a Question? See What Others Asked

Can this be used to water proof a leak on existing shower tile?

what tape to use?

I have cement subfloor in my shower . Can I use this instead of a shower pan liner?

Is this like flex seal liquid?

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