Type 1 organic adhesiveType 1 organic adhesive or latex-modified thin-set mortar suitable for bonding cement board. Fasten to subfloor with 1-1/4 in. (32 mm) USG Durock™ Brand Tile Backer Screws for wood framing (or equivalent) or 1-1/2 in.

What Thinset do I use for cement board?

The cement board is then screwed into the plywood while the thin-set is fresh/wet. MAPEI recommends the use of MAPEI Porcelain Tile Mortar, MAPEI Large-Format Floor & Wall Tile Mortar or MAPEI Large Tile & Stone Mortar as thin-set under the cement board.

What mortar should I use for durock?





latex-fortified mortar

Apply latex-fortified mortar or Type 1 organic adhesive with a notched trowel. Hold trowel at an angle to maintain uniform thickness.

What do you use for durock joints?

For tile backer boards such as Durock, Wonderboard, Hardiebacker, Permabase, and others the seams between the board need to be treated with 2-inch alkali-resistant mesh tape. Then a coat of thinset gets flat troweled over the seam.

What is cement board with EdgeGuard used for?

Durock® Brand Cement Board with EdgeGuard™ offers enhanced, proprietary edge performance, preventing spinout and crumbling. This mold resistant tile backer makes it the perfect choice for tile and flooring in baths, kitchens and laundry rooms in new construction and remodeling.

Should I use modified or unmodified thinset?





Therefore, it’s best to use unmodified thinset when working with an impervious installation membrane like Prodeso for installing radiant floor heating. It’s important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious.

How do I choose the right thinset?

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Quote from Youtube video: And the type of the tile help to determine what mortar is best. If you are installing porcelain or ceramic tile that's smaller than 15 inches on all sides.

Does durock need thinset?

However, many manufacturers including, both Durock and Hardiebacker not only recommend that you use thinset under their backerboard, but they specify it and will void the warranty on their product if it’s not used.

What is the difference between modified and unmodified thinset?

Unlike unmodified mortar, which consists only of a blend of Portland cement, sand, and water retention agents, modified thinset includes additional retention products, such as latex polymers, which can increase its performance and strength.

Which side of USG Durock faces out?



When installing USG Durock® Brand Cement Board Panels with EdgeGuard, does it matter which side faces out? No, it doesn’t matter.

Is unmodified thinset the same as uncoupling thinset?

Yes, there are several terms used to describe a cement-based tile mortar that does not contain any polymer such as unmodified, non-modified and dry-set mortar. MAPEI’s Uncoupling Membrane Mortar does not contain polymer and is considered non-modified.

What is the difference between latex and polymer modified thinset?

They can either me latex modified thin-set where you add the appropriate liquid latex rather than water or there are polymer modified thin-sets that have dry polymers in the powder and when you add water it activates them to give similar performance as the latex modified thin-set.

Is VersaBond thinset unmodified?



A professional formula, all-purpose mortar, polymer-modified to provide good bond strength for floor and tile projects. VersaBond® cures quickly even in cold climates and adheres to most surfaces, exceeding ANSI A118. 4 and A118. 11 without the need for additives.

What’s the difference between white and gray thinset?

Most of these mortars are available in either gray or white. If you intend to use a dark-colored grout, choose a gray mortar; choose white if your grout will be a light color. Achieving a white color requires modifications in the manufacturing process, so expect to pay a few more dollars for white mortar than gray.

What is VersaBond Thin-Set Mortar used for?

Custom Building Products VersaBond 50 lbs. Fortified Thin-Set Mortar is a professional formula, all-purpose mortar, polymer-modified to provide good bond strength for floor and tile projects. VersaBond cures quickly even in cold climates and adheres to most surfaces. This is a cost-efficient, all-purpose mortar.

Which Mapei thinset is unmodified?

Keraset: This is Mapei’s mid-range unmodified.

Is Mapei premium mortar unmodified?



Premium Mortar is a premixed no-mess alternative to traditional thin-set mortars that require water and mixing. It is nonflammable and ready to use.

Can you use modified thinset over redguard?

Can You Tile Directly Onto RedGard? There’s no need to put another layer of product on top of RedGard before you begin tiling. A surface that has been painted with RedGard and allowed to dry is ready for you to apply thinset and install tile. You can install thinset mortar and tile directly onto RedGard.