Joint compound application tools

In such a position, the valve 19 is opened and joint compound is discharged through the ports As the joint compound is discharged, the tool is moved along the corner as indicated by the arrow 48 in FIG. The joint compound is troweled by the leading edges 30 , The saw-toothed sections 33 , 34 on the leading edges form grooves in the applied joint compound which leads to better adherence of the subsequently applied finishing product.

The end tooth 36 fills gaps in the seam of corner 14 following construction. While there has been shown and described a preferred embodiment of an applicator tool according to the invention, those skilled in the art will realize that deviations can be had from the embodiment shown without departing from the scope and spirit of the invention. All rights reserved. Login Sign up. Search Expert Search Quick Search.

Drywall joint compound applicator tool. United States Patent A tool for the application of joint compound to a corner joint formed at the intersection of two drywall panels during new construction, preparatory to finishing the corner. The corner can have an obtuse angle. The tool has a generally flat top surface with leading edges that converge toward an apex. A housing on the top surface is in spaced relationship from the leading edges and includes a chamber for receipt of joint compound from a pressurized source.

The housing has discharge ports that are forwardly directed. In use the head is positioned in the corner and tilted in the direction so that the discharge ports face the corner. The head is tilted to an extent as may be necessary to cause the leading edges to engage the adjacent walls forming the corner. In this position, the head is drawn along the corner as the joint compound is discharged into the corner vicinity and is troweled by the leading edges.

Lithgow, Kevin J. Minneapolis, MN. Click for automatic bibliography generation. Download PDF What is claimed is: 1. A drywall compound applicator tool for the application of drywall compound to a drywall corner joint vicinity, comprising: a flexible tool body connectable at a first end to a supply source of joint compound under pressure; an applicator head connected to a second end of the tool body; said head having a base with first and second leading edges converging toward a forward apex, and a top wall with flat peripheral edge surfaces; a housing connected to the top wall spaced inward from the first and second leading edges; said housing defining a chamber for receipt of drywall compound; a plurality of forward facing discharge ports in the housing open to the chamber; said chamber connected to said tool body by a passageway for passage of joint compound from a supply source through the discharge ports to a corner joint vicinity.

The applicator of claim 1 including: a saw-toothed edge on the first and second leading edges. The applicator tool of claim 1 wherein: said tool body includes a flexible hose segment and a spring connected to the hose segment tending to return the hose segment from a deflected position to an un-deflected position.

The applicator tool of claim 3 wherein: said spring is a coil spring wrapped around the hose segment. The applicator tool of claim 4 including: a saw-toothed edge on the first and second leading edges. The applicator tool of claim 1 wherein: the base has a diamond-shaped forward section. The applicator tool of claim 6 including: a saw-toothed edge on the first and second leading edges.

The applicator tool of claim 7 wherein: said base includes a flat bottom wall. The applicator tool of claim 8 wherein: said tool body includes a flexible hose segment and a spring connected to the hose segment tending to return the hose segment from a deflected position to an un-deflected position.

The applicator tool of claim 9 wherein: said spring is a coil spring wrapped around the hose segment. The applicator tool of claim 6 wherein: the base has a straight trailing section connected to the diamond-shaped forward section.

You should apply joint compound as thin as possible as applying a thick layer will cause it to shrink and crack. So lay it evenly using thin layers. Otherwise, prepare a solution of strong detergent that has trisodium phosphate in it and warm water. Wet a sponge in the mixture and rub the wall well. Brush it off and spread a coat of drywall primer. So, go get the type of joint compound you need from the nearest home improvement and jump into the renovation work. Dap 12 Lb Wallboard Joint Compound Letica Premium 3.

Can I paint directly on joint compound? There you have the walls ready to be painted as you wish! Do you need to add water to joint compound? How long does joint compound take to dry? Do I need to prime joint compound before painting? Can you add water to the premixed joint compound? Can you mix joint compound by hand? Do you sand joint compound between coats?

How do you sand joint compound smoothly? You can sand it smooth with fine sandpaper or using the edge of a drywall knife.

How thick can I apply joint compound? Can I apply joint compound over paint? Before beginning to clean, put on the face mask as this will prevent inhaling any of the dust particles from the sheetrock.

Consider applying a small amount of joint compound into the seam if the gap between the 2 sections of sheetrock is somewhat pronounced. To accomplish this, scoop a small amount of compound with the edge of the drywall knife. Work the compound into the seam gently, and then use the knife blade to smooth the area even with the surface of the wall.

Using only a small amount of the compound will minimize the need to clean the area before moving on to apply the drywall tape. Cut and apply the drywall tape to the seam.

Gently but firmly press the tape into position over the seam, making sure that it adheres to the wall. Apply the joint compound. Feather the product over the seam so that the layer is thin but sufficient to cover the face of the tape. Feathering is accomplished by making light strokes that move downward and to each side in a steady manner. Once a section is covered, apply additional compound to the next exposed area, and repeat the process until the seam and tape are completely covered.

Allow the joint compound to dry. Depending on the brand involved, this may take up to 12 hours. If the tape is exposed as the result of the sanding, apply a second coat of compound and allow it to dry. Then sand again until the wall is as smooth as possible. However, like any dry powder mix, it is susceptible to dampness, clumping, etc. Shake it up before use. Yes No. Not Helpful 1 Helpful 2. Include your email address to get a message when this question is answered.

The same basic process can be used for corners as well as along the wall surface.