Nor will it prevent mold in the case of flooding, when water saturates the drywall and the organic wood framing behind it. We were planning on replacing most of that drywall with the mold resistant dry wall (I think that's called green board), but Home Depot and Lowes keep pushing the cement board for the part that we're going to tile (around the tub/shower). As the lightest of their kind, these panels are easier to lift, carry and install and are ideal in new and remodel construction where moisture and mold … The applicable product standard for mold-resistant gypsum board is ASTM C1396. But I noticed after buying it that the side that faces the studs was made of the same paper as the regular drywall. Like any form of drywall, the mold-resistant form is generally a very durable, easy-to-care-for wall surface. With consistent exposure to moisture, drywall can become rotted and need to be replaced sooner rather than later. Cement board is suitable as an underlayment on countertops, walls and floors. Wallboard and drywall are different names for the same product. The other walls in non-wet areas should be done with mold board because of the humidity in bathrooms. Common Types of Drywall or Gypsum Wallboard, Fireproof Drywall: Basics of Fire-Rated or Type X Drywall, How to Identify and Treat Mold in Your Basement, Composition of Drywall and Joint Compound, Hardwood Flooring in Kitchens Review: Pros and Cons. It gets its name from the telltale color of the paper facing on the front and back. It's rotted out because of small cracks in the grout at the base of the wall. It is important to note that manufacturers never guarantees their product as being immune to mold—only resistant to it. The home builder wants to demolish that wall, make it plumb, and apply green board against the wood wall, then apply cement board over the green board. Water resistant- yes. Drywall is an alternative to the traditional lath-and-plaster method of constructing interior walls. Green board is a paper-backed, water-resistant drywall that has a light green "hospital" tint. Drywall panels fit between wall studs spaced 16 inches or 24 inches apart. Right now the tile is attached directly to the dry wall. The core of the green board drywall is a thicker and more resilient version of the drywall's gypsum core, which allows it to withstand indirect moisture applications, such as the humidity in a bathroom or near a laundry room. Drywall, or wallboard, allows do-it-yourselfers to obtain a smooth wall surface with minimal drywall finishing skills. It provides a strong base on which to install tile and stone. Whereas drywall comes in 4-by-8 sheets, cement board comes in 3-by-5 sheets. It is an older form of water-resistant drywall that is gradually being phased out in favor of products that combine both moisture resistance and mold resistance. Without this, mold spores can not take root. Cement board is a very hard panel formed by cement slurry and reinforced fiberglass mesh. But these products are by no means waterproof or moldproof—and the manufacturers do not claim so. Cement board,Sheetrock, more Drywall? Drywall vs. Plasterboard Sometimes the terms drywall and plasterboard are used interchangeably, but they're actually two different products. Mold remediation companies deal with eliminating mold/mildew, but it's always best to prevent mold before it starts. In normally dry locations, the substantial extra cost of this product is probably not worth the investment. Wet or dry, such backer board provides a … Get daily tips and tricks for making your best home. Glenda Taylor is a contractor and a full-time writer specializing in construction writing. Wallboard, drywall and cement board are widely available panel types contractors and homeowners use in new construction or remodeling projects. You can use tile backer board on the ceilings, but it will require taping the whole sheet instead of just joints for a smooth finish. Mold Resistant Drywall vs. Durock. What Is Cement Backer Board and How Is It Used? If you're just painting the drywall (i.e. There are four main types of drywall: Standard drywall is the least expensive and comes in … Modern mold-resistant drywall combines the moisture resistance of older green board with materials and engineering that also make it quite resistant to mold. Good resistance to moisture as well as mold. (1)Fiber cement boards are far more durable and impact-resistant than gypsum board. Need to replace a tiled wall behind a 5' tub with a shower. rest of the bathroom), then use a mold/water resistant panel. Paperless Drywall . moisture- and mold-resistant panel available. While all gypsum-based drywall is naturally fire-resistant, the PURPLE ® family of high-performance drywall and cement board products is unique because it also resists moisture, mold and mildew. Mold resistant drywall is exactly as it states. Huge quantities of this product are still being sold, but don't use it if your principal goal is mold prevention. Her education includes marketing and a bachelor's degree in journalism from the University of Kansas. Mold-Resistant Drywall vs. Green Board . (3)You can use taper-head drywall screws to install gypsum board. What Is Greenboard Water Resistant Drywall? It is the standard wall finish material used throughout the construction industry. The key to minimizing mold growth is controlling moisture. This type of drywall is covered with fiberglass instead of paper, which protects the gypsum board from rot and offers even greater resistance to mold and mildew.. One potential weapon in the mold-prevention arsenal is mold-resistant drywall, a product marketed aggressively by manufacturers. The easiest brand of mold resistant drywall to find is the USG Sheetrock Mold Tough Drywall. I emphasize paper because paper is the "FOOD" for mold. Green board is intended for use for ordinary wall applications in areas that experience constant high humidity, such as bathrooms and basements, but it does not have the superior mold-resistance of newer products. HardieBacker is a commonly used cement board that is commonly installed under the tile. A paper sheet is an organic material, and it’s susceptible to mold when in constant contact with moisture, hence, … Cement board is a water proof product and will not deteriorate when in direct contact with water. The backside is still plain paper. The quality of the board is a little tougher than regular drywall, but some construction pros find it easier to cut. It should not be used as a replacement for cement board as a backing material for ceramic tile. Note that these products all combine mold-resistance with the moisture resistance that was once the virtue of green board drywall. Concrete backer-board, once commonly referred to in the field by the brand name Wonderboard(r), is a cement product designed as a sheathing material for walls and floors. Today moisture resistant sheetrock has been replaced in the shower area with cement board. Moisture exposure can occur during all phases of the construction process and through the building life cycle from roof, wall and pipe leaks, gross water penetration of the façade, vapor diffusion and condensation, and capillary rise. for the rest of the bathroom you can use a mold resistant drywall like these. Mold Resistant Drywall Tape and Joint Compound Research has indicated that quick-setting joint compound and fiberglass tape may withstand leaks and flood events better than regular drywall joint compound and paper tape. I had suggested to the home builder that I would rather put 15 lbs felt over the wood wall, then put the cement board over the felt, but the home builder said that they would not do that. While typical drywall uses standard paper, greenboards use a moisture-resistant, green-colore… Most if not all drywall manufacturers sell a mold resistant drywall that is also moisture resistant, so a long as it is not exposed to contaminated water it won’t grow mold. Cement boards are made up of cement and glass fibers. It was developed to replace lath and plaster construction. But need galvanized decking screws or roofing nails to install fiber ceme… Cement board is a more water resistant construction material than gypsum. Though green board is a more cost-effective option than mold resistant wallboard, it’s less effective at mold prevention. Soundboard uses wood fibers to augment acoustics, while soundproof drywall has polymers that damp sound. Why PURPLE. Due to their cement and fiberglass base material, cement boards are more impact—resistant and more durable than drywall (made of gypsum and paper sheets). Advantages and Benefits Mold/Moisture-Resistant Gypsum Panels were introduced to provide better protection against the threat of moisture damage than standard drywall, but it can be installed and finished just as easily. Cement board is sometimes called Durock, Wonderboard, and Hardibacker. In the case of gypsum wallboard, that organic material is found in the paper facing on the drywall panels (the gypsum core is non-organic and not subject to mold). The finish face side. Drywall panels fit between wall studs spaced 16 inches or 24 inches apart. Hunker may earn compensation through affiliate links in this story. Green board features a thicker paper backing that has been treated with wax to give it extra resistance to moisture. Cement board, meanwhile, comes in panels that are similar to that of drywall but that is where the similarities will end. x 4 ft. x 8 ft. Gypsum Board is the first and lightest 1/2 in. In my last basement I finished I put up the Purple Mold/Mildew resistant board. 1/2 in. If you can find one that's combined with an abuse-resistant board (since it's a rental) that would be the best of both worlds. Since mold-resistant drywall is generally installed in humid locations, the best surface finish is with wall primer and paint that have good mildew and mold resistance. Drywall can accept surface finishes of paint, wallpaper, or textured skim-coat plaster. Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board. When sheetrock is used in the shower area it will most likely fail within 3-8 years due to the fact that it is moisture resistant and not water proof. This product is … Sheetrock Brand UltraLight Mold Tough 1/2 in. Use PermaBase ® Cement Board instead of drywall under tile in the kitchen or bathroom. panel made of gypsum plaster sandwiched between thick paper You can use galvanized decking screws or roofing nails to install cement board. Lee has over two decades of hands-on experience remodeling, fixing, and improving homes, and has been providing home improvement advice for over 12 years. Use cement board for the tub area, especially if tiling. If the goal is to not have any mold growth in the assembly then all materials should be mold resistant. With some mold-resistant drywall, this is accomplished by using a thicker paper facing and backing that is heavily saturated with a waxy substance that prevents moisture and air from getting at the paper. Specialty drywall panels are available with moisture-resistant and mold-resistant properties for installation on bathroom walls or in rooms with high humidity levels. But in rooms that experience frequent humidity and are often subject to mold and mildew, such as bathrooms or basements, mold-resistant drywall is a good choice. When installed in homes, it is often touted by real estate professionals as a selling feature. Answer + 29. Drywall cuts easily with just a utility knife, but you'll need a circular saw, fitted with a heavy-duty blade, to cut cement board. Water-Resistant Drywall vs. Cement Board . By creating an account you agree to the Hunker, USG: Durock Cement Board 1/4-inch Underlayment. It was built circa 1970, and the installer used conventional sheetrock with 4X4 ceramic tiles. The new mold resistant d/wall board is paperless (they should use the term resistant loosely because there is an absence of material for mold to grow). Mold need water, oxygen and nutrients to grow. It’s hard, durable, naturally moisture- and mold-resistant, and won’t rot, disintegrate or swell when exposed to water, making it ideal for use behind ceramic tile, backsplashes and countertops. To grow, mold spores require oxygen, moisture, and an organic food source. U.S. Gypsum (Sheetrock® Brand Humitek®) National Gypsum (Gold Bond Brand XP) Temple-Inland (Silent-Guard™ TS) Georgia Pacific (DensArmor® Plus; U.S. Gypsum (FiberRoc® AquaTough™) ... Water-resistant drywall works for ktichen backsplashes, but since you are starting from scratch anyway, tile backerboard is probably preferred. Buying in bulk will notably reduce this price. Drywall (also known as wallboard, gypsum board, or sheetrock) is an interior construction panel that's used for making walls and ceilings. The smaller dimensions of cement board make the installation of it on large walls more difficult, but cement board panels fit vertically in 3-foot wide showers, or horizontally behind a standard 5-foot bathtub. Green board is a paper-backed, water-resistant drywall that has a light green "hospital" tint. All drywall is a fairly brittle material that can be cracked and damaged, but repairs are fairly easy to make, either by taping and refinishing the damaged area with taping compound or by cutting damaged areas away and installing a drywall patch. Installation for mold-resistant drywall is identical to that for standard drywall. Cement board is perfect for tile-covered wet applications like showers and tub surrounds. Type X gypsum panels with moisture and mold resistance, up to 16% less weight; Lightweight 1/2 in. For tiling kitchen backsplash. This form of mold-resistant drywall typically uses fiberglass mesh instead of paper for the facing and backing. 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