Can you use AquaDefense on drywall?

Asked By: Reymundo Zaghouani | Last Updated: 5th March, 2020
Category: home and garden indoor environmental quality
4/5 (1,416 Views . 23 Votes)
No. AquaDefense is not approved for showers constructed with drywall.

Click to see full answer


Consequently, can you use RedGard on drywall?

It's true that RedGard can be used on drywall, but when all their product information is carefully considered, it is not the case that RedGard can be used on Drywall in a wet area. As far as I can tell, there is no industry standard that supports the use of a liquid membrane on drywall in a wet area.

Also, can you waterproof drywall? Yes, you can make drywall pretty much waterproof if you coat it on all sides and edges with water-based urethane before you install it. The secret tip to making the drywall waterproof is to coat the paper surfaces of the drywall, including the edges, with clear water-based urethane BEFORE you finish the drywall.

Keeping this in consideration, how do you use AquaDefense?

Apply Mapelastic AquaDefense liquid 6" (15 cm) on both sides of the cracks, control joints, corners and coves, using a paintbrush. Let dry to a dark green color. 2. Apply 2nd coat and let dry.

Can you use regular drywall in a bathroom?

You can hang drywall in the bathroom but not the same type that you hang in the rest of the house. Bathroom drywall must be moisture-resistant, and it's colored green to distinguish it from the regular variety. It isn't appropriate for areas that actually get wet, however, such as shower and tub surrounds.

39 Related Question Answers Found

Does tile stick to RedGard?

You''ll be fine with thinset over Redguard on walls. It's recommended for waterproofing niches, shelves, and entire shower walls when tar paper or poly are not used as a vapor barrier behind the CBU.

Do I need to use RedGard over Hardibacker?

Either you use a vapor barrier behind the hardi, or you can use a waterproofing system (like redgard) over the hardi, but you should not do both. As Vic mentioned, hardi isn't waterproof, so no sense in being concerned with the seams. Hardi, while not waterproof will not be affected by water. Water will do it no harm.

What is waterproof drywall called?

Greenboard is a term that's occasionally used for a type of drywall that is used for walls in damp areas. Originally, greenboard was used as a direct backer board for ceramic tile in highly wet areas such as showers or bathtubs but this usage began to be phased out in the 1990s.

What is the purple sheetrock for?

Drywall. Drywall – also known as gypsum board or wallboard – is a naturally fire-resistant, paper-covered sheet of natural or synthetic gypsum used to build interior walls and ceilings in most homes. PURPLE® drywall is unique because it resists moisture, mold and mildew.

What is AquaDefense?


Mapelastic AquaDefense is a premixed, advanced liquid-rubber, extremely quick-drying waterproofing and crack-isolation membrane for installation under ceramic tile or stone in residential, commercial and industrial environments.

Is there such a thing as waterproof drywall?

It's important to know that moisture-resistant drywall is not the same as waterproof drywall. Look into cement board if you need waterproof drywall. This type of waterproof drywall is designed for wet areas such as showers and bathtub surrounds.

What is RedGard used for?

A ready-to-use elastomeric waterproofing membrane for both commercial and residential tile and stone application. Suited for interior and exterior substrates, RedGard® creates a continuous waterproof membrane barrier with outstanding adhesion and reduces crack transmission in tile and stone floors.

Do you need drywall behind cement board?

Because cement board can be used either for floors or walls, the surface below the cement board will vary: In such wet areas, never install cement board directly over drywall or green board. Instead, first, remove the existing surface material, then install the cement board over the studs and membrane, as applicable.

What is mapelastic AquaDefense?

Mapelastic AquaDefense is a premixed, advanced liquid-rubber, extremely quick-drying waterproofing and crack-isolation membrane for installation under ceramic tile or stone in residential, commercial and industrial environments.

Can I paint over AquaDefense?


Mapelastic AquaDefense can be applied with a paint brush or 3/8" nap paint roller.

Will Thinset stick to AquaDefense?

Aquadefense is a great waterproofing product. Thinset mortar will adhere to it that's what it's specifically manufactured for. It requires the use of a polymer modified / latex modified thinset mortar. Check out the library shower construction thread to make sure that you built your shower correctly so far.

What is Red Guard waterproofing?

RedGard Waterproofing and Crack Prevention Membrane is a ready-to-use, liquid formula that creates a seamless waterproof barrier and prevents common cracks from occurring in tile, stone and grout. RedGard is easy to apply and dries quickly.

Can you use Mapei AquaDefense on plasterboard?

plasterboard (for internal applications only); existing coatings in ceramic, terrazzo and stone; cementitious render. Mapei Mapelastic AquaDefense is a totally solvent-free, ready-to-use,ultra-quick drying, one-component light blue synthetic resin based paste in water dispersion.

Do you have to seal drywall before painting?


After you're done hanging drywall, and all the seams are taped and finished, you need two coats of paint to give the wall its final appearance. Before you apply those, however, you need to seal the drywall and mud with primer. You may get acceptable results by using self-priming wall paint.

How do you seal drywall?

Wipe the drywall with a damp sponge to remove any dust left from sanding the joint compound smooth. Look for burrs, unfilled nail or screw head holes or crevices while you wipe. Sand burrs smooth or spread fresh compound to fill holes, smoothing with a drywall knife and sanding smooth when dry.

Can I use Drylok on drywall?

I suppose you could roll drylok on drywall but it would texture the wall. A latex enamel should do a fine job of repelling moisture - it doesn't matter a whole lot which sheen you use. I wouldn't recommend using an exterior grade paint. They're not formulated for interior work.