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Drywall Taping Techniques

Knives for Taping Drywall: 14 inch wide, 10 inch, 8 and 6 inch bladesTo become adept at taping, you will want to apply the right tape on the drywall. In some situations setting on the compound is similiar but knowing the rudiments and differences of mesh and paper tape and how each one is knived on will help get the best results.

In each case, after the tape is set, go over by floating a coat of compound, then skim again, sanding to a level finish on the dried final mudd coat. Bedding the tape with all purpose compound where embedding is required.

But right from the start -- applying the two kinds of tape differs.

With fiberglass mesh that comes in 1 7/8", 2" and 4" widths, there is no need to bed the tape and so it is a two stage mudding. Press the self-adhering tape on the drywall surface in a firm fashion and work in continual pressings, toward an end point, and score with a knife to form a joint ending. All seams are to be fully covered. And be careful not to allow the mesh to stick back upon itself before it is asfixed on the drywall. Either pulling it from the packaged roll or from a handheld dispenser, held with little slack and guiding with the other hand onto joint surface.
Choose Between Paper and Fiberglass Tape

When you recoat over the mesh work the knife along with the wall or ceiling surface and don't press to severely or the strands in the tape will pull loose and/or fray. Also, when sanding do not breach to the fibers that comprise the mesh. Go right up near them at the closest.

Mesh for Mold Resistance Mold resistant mesh is available for those applications that are susceptible to mold and growth.

Note: there are reports of red-imix compounds cracking and possibly lifting when used with mesh.

The paper tape does requires embedding which means that the mudd must first be applied and the tape onto the wallboard next. So the mudd is applied in a three stage process. Unreeling the tape onto the wallboard from a belt rell makes the task efficient and fairly carefree. Like with mesh, the paper tape is sensitve to abrasion though here the effect is to cause a fluffing. Therefore, sand cautiously when approaching. End off by cutting the paper tape with a knife blad as you make progress.

See Also
Finishing Sanding Drywall Ceiling Repair Patching Large Drywall Hole

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