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Fight Mold With Paperless Drywall
The article addresses the growing concern surrounding mold in residential environments and introduces paperless drywall as an effective solution for mold prevention, particularly in damp areas like kitchens, bathrooms, and basements. It emphasizes that while mold spores are ubiquitous, controlling their growth hinges on eliminating organic food sources. Traditional paper-faced drywall provides an easy food source for mold due to its paper facings. Although many modern paper-faced products offer improved mold resistance, paperless drywall, which replaces paper with inorganic fiberglass mats, offers superior protection.
The article outlines four new work habits crucial for effectively installing paperless drywall. The first habit involves using both screws and adhesive for fastening. While standard drywall screws are used, the article advises complementing them with construction adhesive. This dual approach compensates for the greater likelihood of over-driving fasteners into fiberglass-faced panels, which lack the tear resistance of paper. The adhesive not only enhances the bond but also allows for a reduced number of fasteners, though a belt-and-suspenders approach with standard screw spacing is recommended if local building inspectors require visible fastener density.
The second new work habit focuses on minimizing dust during installation due to the fiberglass content. It recommends wearing a dust mask, gloves, and long-sleeved shirts to prevent irritation from fiberglass particles. The use of power tools, particularly drywall routers, is discouraged for general cutting tasks as they generate significant airborne dust. Instead, hand tools like utility knives and handsaws are preferred for larger openings, reserving routers for precise cutouts around electrical boxes where the benefits outweigh the dust generation. If a router must be used, employing smaller 1/8-inch bits instead of larger 1/4-inch bits can help reduce dust. Care must also be taken to prevent contamination of the paperless drywall panels before installation, as spills or dirt can compromise their mold resistance.
The third habit involves switching to inorganic tape for finishing joints. While paper tape with premixed joint compound is an option, the article strongly suggests using setting-type compound and mesh tape, such as FibaFuse fiberglass tape, to further eliminate organic food sources for mold. It advises caution when embedding mesh tape, recommending a thinned compound mixture, a corner knife for inside corners, and a relatively new taping knife with gentle handling to prevent accidental cuts or tears.
Finally, the fourth work habit addresses finishing the surface of paperless drywall. Due to its slightly rougher fiberglass texture compared to paper-faced drywall, a typical Level 4 finish (two coats of joint compound on seams) might require either light sanding of all walls to reduce the fiberglass texture or a Level 5 finish, which includes a skim coat over the entire surface. The latter is recommended for surfaces that will receive high-sheen paint or be exposed to strong raking light, as it creates a more uniform and smooth appearance. While paperless drywall requires some adjustments in handling and installation techniques, mastering these quirks ensures a successful and mold-resistant outcome.
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