Paper and Fiberglass Mesh Drywall Tape

Although various specialty tapes exist, the choice of tape in most drywall installations comes down to two products: paper or fiberglass mesh. Most joints can be taped with either one, but before you start mixing compound, you need to know the important differences between the two.

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Paper Drywall Tape

' Because paper tape is nonadhesive, it must be embedded in a layer of joint compound to stick to the drywall surface. This is easy enough to do, but if you're not careful to cover the entire surface with compound and then to squeeze it out evenly, air bubbles will form under the tape.

' Although mesh tape can be used on inside corners, paper is much easier to handle in these locations because of its middle crease.

' Paper is not as strong as fiberglass mesh; however, it is nonelastic and will create stronger joints. This is especially important at butt joints, which typically are the weakest areas in a drywall installation.

' Paper tape can be used with either drying-type or setting-type compound.

Cost: $1.55 per 250-ft. roll

Fiberglass-Mesh Drywall Tape

' Fiberglass-mesh tape is self-adhesive, so it doesn't need to be embedded in a layer of compound. This speeds up the taping process and ensures that the tape will lie flat on the drywall surface. It also means that you can apply the tape to all seams in a room before putting on the first coat of compound.

' Although stronger than paper tape in ultimate load, mesh tape is more elastic, so joints are more likely to develop cracks.

' Mesh tape should be covered with setting-type compound, which is stronger than drying type and will compensate for fiberglass mesh's greater elasticity. After the initial coat, either type of compound can be used.

' With patches, where joint strength is not as much of a concern as with a full sheet, mesh tape allows for a faster fix.

' Manufacturers approve the use of paper tape for paperless drywall, but mesh tape provides the best protection against mold.

' For an inside-corner gap wider than 1/4-in., mesh tape and a layer of compound to fill the gap provide a good substrate for finishing the corner with paper tape. If you're doing an airtight-drywall installation (see 'How to Hang Airtight Drywall,'  FHB #229), however, be sure to fill the gap with canned foam before finishing.

Cost: $4.85 per 150-ft. roll

Benefits of Using Fiberglass Mesh Drywall Tape

When considering the choice between paper tape and Fiberglass Mesh Drywall Tape, it's essential to recognize the distinct advantages fiberglass brings to the table. Many users find that fiberglass mesh tape's self-adhesive qualities drastically cut down on installation time while providing durable, long-lasting joints.

Superior Mold Resistance

For those living in humid conditions, the fiberglass mesh's ability to resist mold growth is a significant benefit. Since mold is a common problem in homes, selecting a tape that provides extra protection can make a notable difference in maintaining your home's integrity.

Ease of Application

Fiberglass tape is much easier to handle for novice DIYers. Its self-adhesive backing reduces the complexity of taping, allowing for a smoother learning curve. This means smoother results even for those who may not have much experience in drywall finishing.

The advantages of fiberglass mesh tape are hard to ignore, especially for those looking to achieve a perfect finish efficiently.

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