It does not have a backing, instead, it contains cellulose fibers dispersed throughout the gypsum. USG FiberockĪnother type of drywall is called monolithic drywall (pictured above)- no paper and no fiberglass – such as the USG Fiberock line. I would not rule out paper-backed drywall, personally. If you have a big leak you are likely to find that quite quickly. If it isn’t, keep in mind that you should not have moisture or condensation behind your wall if your wall is designed and built right. If that is a concern of yours, I would check out the fiberglass-backed drywall and see if that is tolerable for you. The other concern is that if it gets wet it will mold faster than other materials.
#Paperless drywall usg full
One study showed that paper is already full of mold spores ( source). Many drywall companies use recycled paper which some folks are reluctant to use in their homes. Should You Use Paper-Backed or Fiberglass-Backed? USG Glass Mat Liner It does not contain a flame retardant, it does contain glass fibers (fiberglass). Though these things change over time, and that same brand could be made in a different factory on the East Coast. USG Firecode X – Research that a very sensitive client revealed that USG was the cleanest gypsum on the West Coast (as it contained more natural gypsum). You can get it at Home Depot or through your contractor. This one is inexpensive and easy to find. Although we don’t know what the blowing agent is (it could be air), I would feel comfortable using this one in my home due to my own testing of it.
USG Sheetrock Ultralight – I have been happy with their Sheetrock Ultralight, I did not pick up any offgassing or moldiness in the paper. They use recycled paper backing and facing, but there should be no mildewcide, fiberglass, or other major additives. The “regular” drywall should contain the least amount of additives. They also have GreenGuard Gold certification, which I discuss more below. This is the largest drywall brand and the easiest to source. The gypsum could be natural, synthetic, or mixed, and it’s very difficult to find out which drywall line contains which type of gypsum. These are all easy to source at building supply stores and through contractors. USG, Georgia-Pacific, CertainTeed and National Gypsum are the main producers of gypsum board. Or, you could minimize the amount of mercury by going with natural gypsum. If you wanted to avoid all gypsum board you would be looking at alternatives like MgO board, tongue and groove wood (not allowed by all codes due to fire risk), or plaster and lath (wood or metal lath). Therefore, mercury in drywall has not been a concern of mine. This resulted in mercury levels in the rooms that were below the background levels normally found indoors and within or below the levels found in outdoor air ( source). One study found the amounts were 0.92 ng/m2-day for natural gypsum wallboard and 5.9 ng/m2-day for synthetic gypsum wallboard.
It is also a trace metal found in natural mined gypsum. The amount of mercury in synthetic gypsum varies depending on the power plant it came from ( source). It is regulated by the UL standard (ULE 100).
Emergency Housing for Chemical and Mold Sensitivityīoth synthetic and natural gypsum contain low amounts of mercury.How I Recovered from Chemical Sensitivities.How “High Performance” can Help Prevent Mold.
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