Asked by: Sasa Chinchilla
home and garden indoor environmental quality

Do I need mold resistant drywall in kitchen?

Last Updated: 19th April, 2021

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Commonly called greenboard or tile backing, this moisture-resistant drywall should be used in bathroom applications and some areas of the kitchen. Homes built in especially hot, muggy or humid climates can benefit from specially made mold-resistant drywall, which is manufactured specifically to inhibit mold growth.

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Consequently, is mold resistant drywall worth it?

In brief, mold-resistant drywall still can grow mold, and with surprising vigor. However, it does have less of a propensity towards mold growth than traditional paper-covered drywall. Mold resistant drywall is more expensive than paper-faced drywall, but not vastly so.

Also Know, do I need mold resistant drywall in garage? Mold/mildew will grow if the moisture is trapped. Re: mold resistant drywall? As far as I know the 5/8" is only required as a firewall in an attached garage between the garage and house. 1/2" is ok for the other walls or for a detached garage, although some people here like thicker sheeetrock for puncture protection.

Besides, is mold resistant drywall required by code?

Technically, the building code does allow water resistant sheetrock installed on ceilings of tubs and showers, but it must be nailed to ceiling joists that are spaced no more than 12" apart. However, the performance limitations of the sheetrock was not fully understood until a few years after its use.

What is the difference between green drywall and purple drywall?

What's the difference between PURPLE® drywall and traditional green drywall? Traditional green drywall (also known as greenboard) is only moisture-resistant. PURPLE® drywall, only made by National Gypsum, is superior because it offers moisture, mold and mildew resistance.

Related Question Answers

Idayra Somasundaram

Professional

Can I paint over mold?

Painting over mold is one of the most common methods to hide mold. But that is the problem – you are only hiding the mold temporarily. Painting over mold does not remediate the problem. The paint will not kill the mold, and it will only hide it for a short period of time.

Kleber Nobbe

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When should I use moisture resistant drywall?

It is best to use greenboard or other water-resistant drywall in the large areas of bathrooms, kitchens, and other areas where the drywall may be subjected to lightly damp conditions, humidity, and the occasional minor splashes of water.

Geroni Inchusta

Explainer

What color is mold resistant drywall?

Purple drywall offers the same advantages as regular drywall, but with superior moisture- and mold-resistant characteristics. It can be used with all wall and ceiling applications and is ideally suited where enhanced moisture and mold resistance is desired.

Ahmida Wassmann

Explainer

Is moisture resistant drywall required by code?

Changes made to the 2006 International Residential Code (IRC) no longer recognize moisture-resistant, paper-faced drywall (commonly known as “green board”) as a suitable tile backing material in wet areas such as tub and showersurrounds.

Daria Weischedel

Pundit

Can I still use moldy joint compound?

In truth, mold spores are ubiquitous in this world and will grow anywhere under proper conditions, i.e. continually moist conditions. Cured dry joint compound does not fit that situation at all. Also if you have mold in your compound just throw it away.

Gavina Uccelli

Pundit

Do I need mold resistant drywall in bathroom?

Installing moisture resistant drywall in the bathroom can help prevent growth of mold. If you need to replace your drywall after water damage or mold issue, it would be a good idea to replace it with moisture-resistant drywall. Cost of drywall. Regular drywall will not protect your property from water and mold damage.

Bikramjit Pascoinho

Pundit

Can you tile over mold resistant drywall?

Mold, mildew, and rot result. In short, tile and grout are not inherently waterproof. Many professional installers even recommend against using water- or mold-resistant drywall in high-moisture areas. In sharp contrast, cement backer board does not rot, warp, grow mold, or deteriorate when subjected to water.

Jinjie Paragulgov

Pundit

What is purple drywall used for?

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.

Mitkov Tsiulev

Teacher

What thickness drywall should I use?

The thickest option available, 5/8-inch drywall is ideal for commercial construction applications. 5/8-inch thick drywall is also referred to as firewall drywall. Its thickness makes it the ideal drywall for soundproofing in noisy buildings. 5/8-inch drywall can be used on walls, and will not sag when used on ceilings.

Juana Kurtha

Teacher

Does mold wipe off?

Mold will usually be embedded in the affected material and cannot be easily wiped off. To remediate mold, it may be necessary to cut out and conduct remediation activities in the affected area(s). The most common complaint is mold growth on bathroom ceilings, walls and grout in the shower.

Homero Mele

Teacher

Can you use Hardie board on shower walls?

Cement Board and a Sheet Membrane
Kerdi can also be installed directly over standard drywall in a shower because, when installed correctly, it creates a continuous waterproof barrier.

Dawit Gleizer

Teacher

What is Blueboard drywall?

Blueboard is a good answer to all the problems that are caused by regular drywall. It is essentially the same as drywall in the interior composition of gypsum. The difference is in the blue paper covering on blueboard. This paper is specially treated to bond with a specially formulated plaster.

Tambra Oehmichen

Beginner

How thick is garage drywall?

Also, ?” is the standard thickness for fire-resistant or fire-code drywall, commonly found in garages. ¼” drywall is relatively uncommon, and can be used for repairs or for curved areas, where you can double up two sheets to make a standard ½” sheet. As far as lengths, the standard sheet size is 4' x 8'.

Casildo Haidner

Beginner

What kind of drywall do you use for a bathroom ceiling?

Conventional drywall is commonly used for ceilings in non-shower/tub areas of bathrooms, although some builders prefer to use moisture-resistant drywall — a.k.a. greenboard — instead. Moisture-resistant drywall is similar to standard drywall but has face paper that's treated for extra resistance to mold and moisture.

Freeman Niederreiter

Beginner

What is purple mold?

Purple mold is just one variety of toxic mold that can be found in your property. The existence of purple mold is not always easy to find as this type of mold often grows on walls and unexposed wood. It is not uncommon to discover it under wallpaper or hiding behind walls.

Leopold Laure

Beginner

Does it matter which side of drywall faces out?

Function. The brown side of drywall should not face out. The other side -- which can be gray, green or blue, depending on type -- should face outward. Failure to orient the drywall correctly will lead to surfaces that look rough and unfinished even when painted.

Olatz Alesbury

Beginner

What type of drywall is used for bathroom walls?

Moisture-resistant board options include American Gypsum (M-Bloc), National Gypsum (XP) and GP Green Board. Cement board such as PermaBase should be used instead of gypsum board in high-moisture areas like tub and shower surrounds.

Valeriia Rumpf

Beginner

What type of drywall should be used in a kitchens?

Commonly called greenboard or tile backing, this moisture-resistant drywall should be used in bathroom applications and some areas of the kitchen. Homes built in especially hot, muggy or humid climates can benefit from specially made mold-resistant drywall, which is manufactured specifically to inhibit mold growth.