NOTE: There is a special drywall knife designed for use in corners called an inside angle trowel right. These are available both stationary and adjustable styles. I've done corners both ways and though the corner tool has advantages, I have found that as an amateur it is neater to do the two sides with a standard drywall knife and then use the corner trowel to neaten up the corner. How drywall tape is designed How to install drywall tape Apply a layer of drywall compound over the seam or area to be repaired.
The compound does not need to be applied evenly, but it must completely cover the area behind the tape. Any dry spots may lead to tape failure and more work later! It is not important to fill the gap between the panels behind the paper.
Indeed, if the gap is very large the weight of the compound filling the gap might cause the tape to bulge out If you feel the gap should be filled, it is better to fill the gap first, allow the compound to dry completely and THEN apply the tape over it.
Lay the tape into the compound, seam bulge toward the wall. Run your taping knife along the tape, pressing it hard enough to cause most of the compound to ooze out from under the tape. There should only be a very small amount of compound left behind the tape. NOTE: Some installers like to wet the tape first by running it through a bucket of water. This can improve the stick between the compound and the tape by slowing down the drying time.
When the tape absorbs the moisture from the compound, it can cause dry spots that may lead to tape lifting. It's your choice As you work, apply the excess compound over the top of the tape in a thin layer OR clean it from the knife and use fresh compound to lightly cover the tape. Of course, if you prefer you can let the compound dry and put the next layer on later. Most experienced drywall people do this layer at the same time. Choosing the best drywall tape for a project depends on how many seams installers have to tape, their skill level, and if the seams appear on a flat portion of a wall or in a corner.
When purchasing drywall tape, consider roll length to determine how much is required and the application method. Both standard paper drywall tape and flexible mesh tape come in rolls up to feet in length, and the standard rule of thumb for estimating the necessary amount is to purchase 1 foot of tape for every 2 square feet of wall. For example, if the room is 8 feet by 10 feet and the walls are 8 feet high, that equals square feet of wall, so purchase linear feet of drywall tape. The main difference between adhesive and non-adhesive drywall tape is how the tape is applied.
Non-adhesive tape, such as paper tape, must be embedded in a layer of wet joint compound applied to seams between panels before the tape goes on.
Self-adhesive drywall tape, on the other hand, is positioned over the seam before the application of joint compound. However, DIYers may find the non-adhesive tape slips around too much on the wet compound, making it difficult to position directly over the seam.
Also, wrinkles may form in the tape that are difficult to smooth out. After that, installers smooth the compound over it, pushing the compound through the mesh surface and into the seam beneath.
Creased paper drywall tape is usually used only on inside corners. There, flexible tape will likely fail to hold a sharp crease down the center. A handful of reinforced creased tape is labeled for use on both inside corners and outside corners, and this type should be embedded in compound.
However, for novice tapers, a corner bead probably offers the best results on outside corners. To qualify as a top pick, each type of drywall wall tape should be durable, with the ability to stick securely to wet joint compound.
It comes with an application of adhesive on its backside, so users often have to measure, cut, and apply the tape right over a dry seam. The tape features a thin yet strong fiberglass mesh that allows the joint compound to ooze through and fill the seam beneath. If desired, cut the tape into smaller pieces to apply over existing cracks in walls. This self-adhesive strong fiberglass tape sticks securely to dry drywall when taping joints.
Designed for regular joint taping, it also comes in handy for patching cracks in walls. As with other self-adhesive drywall tapes, LYLTECH goes on the wall first, followed by an application of joint compound smoothed over the tape to push the wet compound into the joint beneath. Cutting the self-adhesive tape and attaching it over a dry joint, then applying compound on top, is a fairly simple process. The tape is mold- and mildew-resistant, which makes it well-suited for bathroom and basement projects.
Made from glass fibers, this tape resists mold growth, which makes it good for use in rooms with high humidity, such as bathrooms and basements. Like paper tape, FibaFuse must be embedded in an initial layer of joint compound with additional thin coats of compound applied on top. Also like paper tape, FibaFuse fits in professional tape-dispensing tools such as banjos and super tapers.
Skilled drywall installers often prefer this type of tape. Like paper tape, this corner tape should be embedded in drywall compound. It comes in a foot roll. At fully 6 inches wide, FibaFuse Paperless Drywall Repair Tape is a wise choice to use overhead when taping the joints between ceiling drywall panels. The extra width makes it easier to align over seams without error than narrower tapes.
Moreover, FibaFuse comes pre-creased, so it can also be used in the inside corners between the ceiling and the walls—a typically tough spot to tape smoothly. Due to the natural flexibility of the tape, the shifts between two adjoined panels will not break it, unlike the drywall compound which could crack under the strain.
This tensile strength affords limited movement while still holding everything in place. Drywall projects are usually quite extensive so any improvements on the time taken will likely be appreciated.
The drywall compound that glues the panels together and covers the seams is strong once solidified. However, as the paste dries to a solid state it also shrinks slightly. This means that any seams or large cracks will reappear as the compound sinks into it. By ensuring each layer of compound is thinly applied to the seams the natural shrinking is dramatically reduced. Due to the shape of the tape and the crease in the middle it also fits in between the seams of drywall perfectly, creating a flush connection.
This provides a smooth finish to the wall. As the drywall warms and cools throughout the changing seasons, there will also be a continuous strain on the compound. This will tend to cause cracks in thicker layers of the stuff and again requires tape to provide an additional support layer. The tape means less compound is used and in thinner layers. The cost of drywall tape is minimal relative to the rest of the components involved in a drywall project. Added to this there is the versatility of drywall tape and the different types of tape available.
Each type supports various uses better, making an all-round tool for drywall builds. There are two main types of tape for this sort of job: paper tape and fiberglass mesh tape. Both of these have different advantages over the other. Any jostling from neighboring panels gets contained by the tape. In certain positions of the drywall this makes a considerable difference. In order to attach it you must first apply a layer of compound to the surface.
This makes paper tape usable with any type of drywall compound which is a versatile benefit. The corners of drywall are notoriously difficult to tape down and secure. Paper tape is easier than others when it comes to crimping corners together. The smooth finish this creates in the corners is worth a lot to most drywall builders. As the name implies this tape is made from interwoven fiberglass for added strength. The advantage of this is self-explanatory and makes it a firm contender to the more adaptable paper tape.
Unfortunately, fiberglass mesh tape is more elastic than its paper version and can cause problems with regular strain or impacts on the panels.
Unlike the paper version this tape has its own adhesive which makes attaching it to the seams an easier process. It is also more resistant to moisture and as a result mold and similar degradation too.
When it comes to choosing which tape to go with, it may be best to examine the situation and environment it will be in and match accordingly. Drywall tape clearly has advantages to it. Just how beneficial it is comes down to knowing how and when to apply it. Armed with this information equips you to better deal with any drywall projects you encounter.
Time to start getting creative with your walls.
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