Green board is called that because the face side paper is sea-foam green. The color is only used as a means of identifying this particular type of drywall. What makes this type of drywall different is that it is moisture resistant. Its core is impregnated with water resistant materials.
Fiberglass-coated drywall is both mold and moisture-resistant. Purple Board Drywall – In addition to being moisture- and mold-resistant, purple board drywall is also fire-resistant. There is usually 5/16-inch thickness to the gypsum, which is fire and moisture-resistant.
While all drywall is naturally fire-resistant, PURPLE drywall is unique because it also resists moisture, mold and mildew.
Green board is a general term for drywall that can withstand high moisture or humidity. Although it is being phased out in modern construction, you might still come across it or need it for a project around the house. Green board is easier to install and less expensive than cement board alternatives.
Greenboard should not be used in a tub or shower enclosure.
phasing out greenboard
This relatively new addition to the drywall market is gradually replacing green board because it's suited to the same tasks but even more water- and moisture-resistant than green board. Paperless drywall consists of a water-resistant gypsum core and a fiberglass (rather than paper) backing.
For areas that will have direct water contact, such as shower walls, Cement Backer Board is often the go-to choice. Made of reinforced concrete with a glass fiber mesh on both sides, this material is designed to serve as a substrate for tile.
Apply a waterproofing membrane, such as a liquid waterproofing compound or a sheet membrane, to create an additional layer of protection against moisture penetration. Next, ensure that all joints and seams are properly sealed using a waterproof joint compound or tape.
What's the difference between PURPLE drywall and traditional green drywall? Traditional green drywall (also known as greenboard) is only moisture-resistant. PURPLE drywall, manufactured only by Gold Bond Building Products, is superior because it offers moisture, mold and mildew resistance.
Green board is called that because the face side paper is sea-foam green. The color is only used as a means of identifying this particular type of drywall. What makes this type of drywall different is that it is moisture resistant. Its core is impregnated with water resistant materials.
The most popular way to waterproof your drywall is to use oil- or latex-based waterproofing primer. These primers are made by most paint manufacturers and are designed to prevent mold and mildew from growing on the surface of your drywall.
Regular drywall is not recommended in bathrooms as it can easily absorb this moisture and mold or even disintegrate. Instead, bathroom walls should be constructed from drywall that is resistant to mold, mildew, and moisture. The best product to use for bathroom walls is MMR drywall, also known as green board.
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Sheetrock® Brand Mold Tough® Panels Firecode® X (UL Type SCX) are 5/8 in. (15.9 mm) Type X panels that feature a noncombustible, moisture-resistant gypsum core that is encased in moisture-and mold-resistant, 100% recycled green face and brown back papers.
One key difference between the two is that sheetrock is a brand name of drywall made by the United States Gypsum Corporation. Another difference lies in their production process; sheetrock has a slightly denser core than drywall due to the addition of a small amount of wood fiber to the gypsum core.
Bathroom waterproofing with liquid membranes is perhaps the easiest and cheapest modern method of waterproofing, which can be applied to any surfaces that come into contact with water or moisture.
Finally, to prevent moisture intrusion, caulk the gap between the Shower Bead and the shower/bath unit. For additional protection, you're able to lay a bead of caulk onto the shower/tub flange and embed the support leg of the Shower Bead in it, as shown above.
There are four primary sorts of waterproofing membranes being used today consisting of sheet membrane layers, liquid membranes, foam wallboards, as well as foam shower bases.
In your bathroom, the forecast always calls for a chance of showers – or maybe a bubble bath. That's why easy-to-install PURPLE® XP® Drywall is moisture-, mold- and mildew-resistant, so you can keep walls and ceilings fresh and clean for years to come.
Cost Comparison
According to Angi, the standard price of purple drywall ranges from $15 to $60 per panel, while green drywall costs around $14 to $18 per panel. Installing drywall costs between $1.50 and $3 per square foot, covering both materials and labor.
PURPLE® XP® Drywall.
Blue Board Drywall
It is perfect for wet areas because it has great mold and water resistance qualities. It was not made for tape, mud or paint but it certainly does a good job at minimizing noise and offering low emissions. Overall, we can say that blue board is the best choice when it comes to performance.
With a high resistance to both elements, blue board works exceptionally well in high moisture environments like bathrooms. Given that the price is comparable to green board, this is why we feel it is the winner.