Mold is not a problem you want to deal with and fix later on,. Try as you may, once you get it there, you’ll probably be very unlikely to get rid of it. … The goal is to be able to build a home that is mold and moisture free.
If that can be done, insurance companies will be willing to offer mold coverage on the property and lenders might offer a slightly better financing rate, Perry says. “If that is the case and we can make it cost-neutral to the homeowner, that would be a wonderful thing,” he adds.
Stay away from standard drywall (aka gypsum board, sheetrock). Toxic mold loves this stuff. Focus on eliminating mold’s food source by using paperless wall board, (Georgia-Pacific’s DensArmor Plus), and CertainTeed’s Optima non-organic insulation, in the walls and its DryRight insulation in the ceiling cavities. The drywall needs to be installed with inorganic glues and tapes. WallSpan No Mold Joint Tape is a great complement to a moisture-resistant drywall installation. Like the ToughRock Mold-Guard drywall, this product is easily identifiable on the shelf because of its green color. The joint tape features a self-adhesive and is easy to apply to drywall joints in preparation for the joint compound.Plus, the insulation is covered with a permeable vapor barrier that allows for air exchange in cold, dry weather, but prevents humid air exchange on hot, muggy days.
A major issue for building a mold-free house is convincing builders to use a different process or material than the ones they’ve used for years – or one that costs a little more. The difference in cost to use paperless drywall is probably less than a faucet and couple lights over the vanity in the bathroom. People will say it’s double the cost of regular drywall, but the overall cost of drywall in a house is half a percent of the total cost. In a $250,000 house, that’s $1,250. Many people spend $3,000 on a vanity top. Would you rather have a mold-free house or a different vanity top?
In addition to the drywall, all the wooden structures of the house should be coated in a permanent anti-microbial spray. We suggest one developed by American Mold Guard but others are also available for protection against mildew.
Avoid ductwork for heating, ventilation, and air Cconditioning (HVAC). Dust can collect in ductwork, which mold can grow on. You can’t see what is going on in ducts. In order to avoid having ductwork in a house, you would have to use radiant in-floor heating, probably. And you may need to use more than one wall or window-mounted air conditioner. Probably small houses with open floor plans would work best with a ductwork-free design.
Ventilation is critical. Many of the latest and greatest home building ideas are extremely air-tight, for energy efficiency. So most modern homes have a heat recovery ventilator. It brings in fresh air without losing so much of the heat/coolness that is desired in the house. You might consider getting a larger one than is needed for the size of the house, or having more than one.
When building a slab foundation, insulating the slab would prevent the floors from becoming damp and clammy in the summertime.
No chip board, plywood, oriented strand board, or other composite wood products made with a lot of glue and formaldehyde. Most of us have chemical sensitivities. I’m trying to find products that don’t off-gas a lot. Plus cellulose in general is food for toxic mold.