I used a 6 inch knife for the second coat. This is also the time to apply joint compound a second time to the nails and screws, using the same method you did for the first coat. Common mistakes that most people make and that I addressed here. No, we don't put drywall on masonry much. Dan Harmon (author) from Boise, Idaho on November 08, 2015: My only thoughts are that either it isn't actually smooth and level (try a straight edge over it) or that it isn't actually dry. Yes, I pointed out that the homeowner will never have the years of experience to keep up with a professional that can tape an entire home in a couple of hours. Correctly installed drywall, ready for the mud. It must be not only set up but dry before going over it - don't cover it just because it is hard. Wilderness, I got the chills reading this article. The butt joint will need two passes to apply the joint compound. Flat joints are those that have the wrapped, tapered edge of the drywall meeting another tapered edge. any ideas? When smoothing joint compound already on the wall, keep the knife at around a 45 degree angle to the wall. I have a container of Sheetrock All Purpose Joint Compound which I bought at Home Depot less than a year ago. https://www.ferguson.com/content/trade-talk/business-tips/4-tips-to-minimize-dangers-of-dust-inhalation, https://www.youtube.com/watch?v=uuS001pQNzI, https://www.youtube.com/watch?v=2uFK8OGV2UM, http://dwfc.org/wp-content/files/2010_03_16_Joint_Compound_Drying.pdf, consider supporting our work with a contribution to wikiHow. I'm not sure if a wet sponge is a reasonable idea or not. The slabs I'm using have a foil moisture barrier at the back covered with corrugated paper for protection, plus a foil layer between the drywall and insulation (which I think is some form of expanded polyurethane). Thanks for the info. In any case, start mixing the compound with a mud masher or a drywall mixing paddle in a 1⁄2-in., low-speed (450-650 rpm) drill. It's best to use all-purpose compound for the first of these finish coats because it has good durability and adhesion. The side to be applied to the wall is the outside of the roll, but can also be found by grasping the tape on each side and gently bending it. wikiHow is where trusted research and expert knowledge come together. Tradesmen will many times prefer to use lightweight all purpose joint compound because it is easier to sand than "all purpose" or "topping" compound and a light sanding is required once dry. Perform your repair as normal. Often times an entire row of screws are cover with one stroke, then the excess removed from each one individually or in one additional stroke. For taping the walls it should be used as received without any dilution as any water addition also dilutes the glue and bonding ability of the joint compound. However, like any dry powder mix, it is susceptible to dampness, clumping, etc. This joint compound is sometimes also referred to as drywall mud by the profes… I've done this with one joint and then did the "torch test". Heavyweight joint compound is used for the base layers because it is a denser material. There should still be a definite taper on the flat joints after this process; you have another two coats to apply before the surface is to be flat. Please consider making a contribution to wikiHow today. The block coat needs to be done as neatly as possible - you are approaching the finished product. You will, of course, need joint compound and drywall tape. Second, the knife should be held with the index finger on the metal part of the blade, and the other fingers gripping the handle. This layer of joint compound should be pressed firmly onto the tape, but not so hard as to leave the tape exposed. Easy-to-use, ready-mixed formula is easily applied, has minimal shrinkage and sands easily. I've been looking at some YouTube videos and some plasterers us a float and hawk to apply second and third coats rather than a wide knife. Materials: Premixed all-purpose joint compound, paper joint tape, 180- or 220-grit sandpaper, drywall screws, corner bead Getting Started There … Used in conjunction with drywall tape, the product is relatively easy to apply, requiring only a small amount of effort. Nails and screws should be driven just slightly under the surface of the drywall, but not so much that they break the paper surface. Dan Harmon (author) from Boise, Idaho on October 16, 2019: If there are large gaps between pieces of drywall (1/4" or larger) they should be filled. Very thorough and well written. It is not necessary to vacuum or brush the entire wall, but heavy accumulations should be removed. Shone the light at an acute angle from the side and there aren't any shadows so the surface seems to be free of ridges and furrows. Not in the US, they don't! That being said, excessive sanding of the paper on the wallboard will scuff it, and that WILL be visible. Either way, try not to scuff the paper on the drywall - roughened paper will flash through paint and show up in splotches on the finished surface. Sand the final coat lightly when it dries and the drywall is ready for priming and painting. Use a 9-inch roller cover with a ½-inch or ¾-inch nap. Let the wall dry completely and sand before applying the next layer. Do not, however, cover the tape with a thick layer of joint compound; just the minimum to cover the tape. So – I’m hoping you can help out your fellow artists and craftpeople wherever you may live, and help me put together a list of product names for locally available materials that will work to make paper mache clay. You drill an 8mm hole through board and slab and hammer them home. It is also considerably more expensive, so larger jobs usually use the paper type. Take a few minutes to check out the installation of the drywall, correcting minor problems as you discover them, and you will find that the job will be much faster and easier with better results. It is also possible that the difference in surface texture between mud and wallboard is making it look like a depression when it really isn't. My wife would not hesitate to agree there. Do not discard the liquid; it is not simply water, but part of the joint compound. For a beginner doing only a room or so, the recommendation is that it not be thinned. We visited Scotland a couple years ago and it really was interesting seeing the differences. Below ground there is always the dampness to consider (which will degrade drywall) and above ground we put in either steel or wood studs, likely to provide for utilities. Shake it up before use. We are having trouble with small depressions over the screws. 4. It was wired with knob and tube wiring, run all over the basement "ceiling"; you could reach up and touch bare wires where the old cloth insulation had deteriorated and fallen off. Most work is done using normal pre-mixed joint compound, and for the most part an all purpose formulation is more than adequate. Any imperfection at all will show up in the final, skim, coat; it is not uncommon to lightly sand the block coat after it is dried to make a superior job. Once the tape is on the wall, it is pressed into the tape with the knife, once again with just enough pressure to firmly embed it into the applied joint compound but not so hard as to squeeze all the joint compound out from under the tape. Although it is possible to buy texturing compound, many drywall professionals use regular drywall joint compound… He ended up sanding off nearly an inch of joint compound, using a belt sander to do it, and nearly destroying the drywall underneath. Several adhesives for tile look like joint compound, but are designed expressly for application of ceramic tiles. USG claims it to be 25% lighter than any other conventional joint compounds. I learned the hard way at my old house about taping the joint. For most home owners, there is no more dreaded job than finishing or applying tape and joint compound to drywall, but it doesn't have to be that way. Do I need water to use a taper brush with joint compound? Thank you for a great article, by the way. Then, thread the pipe into the fitting, making sure to avoid cross threading that might damage the threads. Consider applying a small amount of joint compound into the seam if the gap between the 2 sections of sheetrock is somewhat pronounced. I've been doing a lousy job of mudding for decades and never learned from anyone who was very good. The butt joint will need two passes to apply the joint compound. It's not a matter of the job requiring three coats for some mechanical reason; it is purely aesthetic. Is temperature a factor when using joint compound? Check for protruding nails and/or screws. No. Apply at least three layers: tape with compound, a block coat, and a skim coat. For a corner, fold the tape inward and place the folded edge directly into the corner, allowing the sides to fan out and connect with the sheetrock on either side. Make each coat as near to a finished product as possible, given what you are trying to accomplish with that coat. It is very difficult to apply joint compound to one side of the corner and then the other side without disturbing the first side, although the corner knife may be used again for the block coat. All-Purpose joint compound is a versatile performer suitable for all finishing applications with excellent bond and great workability. Loose nails may be driven the proper depth but a twisted or deformed stud can still allow the drywall to move in and out as it does not actually contact the twisted stud. The more vertical it is, the fewer air pockets will be produced and the smoother the surface, but also the more gouges you will produce with very small movements and changes in the knife. Use all-purpose joint compound for taping and first coating corner trims. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/6\/6f\/Use-Joint-Compound-Step-1.jpg\/v4-460px-Use-Joint-Compound-Step-1.jpg","bigUrl":"\/images\/thumb\/6\/6f\/Use-Joint-Compound-Step-1.jpg\/aid1355450-v4-728px-Use-Joint-Compound-Step-1.jpg","smallWidth":460,"smallHeight":306,"bigWidth":728,"bigHeight":485,"licensing":"

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\n<\/p><\/div>"}. Include your email address to get a message when this question is answered. I use two fingers myself sometimes, especially with wide knives when I have to skim whole walls. When you begin to apply joint compound, load your knife with about 1/4 of what it. One last time use the same procedure as you have already used twice and cover nails and screws. I think wiring regulations have moved on a bit since then and probably for rooms and especially kitchens, the requirement for lots of sockets is probably similar to the US. It is easier to pull under the knife and makes fewer air pockets, but also falls off both the knife and wall easier. I've always just stuck with the hand tools for my home repair or inprovement jobs and think most homeowners should do the same. Ready mix joint compound comes in a variety of formulas including all purpose, lightweight, and with dust control. After you've thoroughly prepped the wall, you're ready to start applying the tape and joint compound to your drywall. Normally at this time the nails or screws are covered. All-purpose joint compound, commonly called mud, is the wet material that is used for drywalll installation to adhere paper joint tape, fill joints, and to top paper and mesh joint tapes, as well as for plastic and metal corner beads. The only reason to recoat fastener dimples is because the mud will shrink somewhat, leaving a smaller dimple that once more needs filled - eventually the amount of mud and shrinkage becomes so small that it can no longer be detected. As noted above, finished flooring needs to be covered; you absolutely will drip joint compound and while it is water soluble and not difficult to remove, you will probably drip a. Westpac joint compounds provide ease of mixing, excellent working time, and minimal shrinkage and provide a smooth finished surface. The same basic process can be used for corners as well as along the wall surface. I don't mind taping and mudding drywall, but I hate sanding it. A second nail is often placed about 2" from the first to firmly fasten the drywall. The inexperienced homeowner can do this if they use great care but putting mud on a wall is an art, not a purely mechanical task, and getting a really flat wall is not easy. Corner joints to be taped with paper tape must have both sides done at once, and a corner knife is a very useful tool to have for that purpose. So I may try that on an inconspicuous joint and if it doesn't work out to well, I'll invest in a wider knife. You will be left with a joint around 10 inches wide. I would not sponge the dust off at all. Flat joints are expected to be flat when finished as you will apply joint compound to fill in the taper in the drywall. Don't make that mistake. If this happens the nail will eventually "pop" through the joint compound so make sure the drywall is firmly attached to the studding behind it. Dan Harmon (author) from Boise, Idaho on October 28, 2012: You're more than welcome, John. A new bucket of joint compound may look mixed, it may look dry, or it may have a little water on top. Walls should be reasonably clean before proceeding. I forgot to specifically thank you for it in my first comment. Use a 12-inch drywall knife for maximum coverage. Sandpaper makes a much bigger mess with dust everywhere, but wet sponging is more difficult to get a good job with. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Even if an entire house was to be taped and finished I doubt it would be worth the effort to learn how to use the automatic tools - A skilled experienced taper can tape and apply joint compound to the drywall in a 3 bedroom house in just 2 or 3 hours by hand. To create this article, volunteer authors worked to edit and improve it over time. Large amounts of dust, sawdust, or other materials will result in a lumpy wall and difficult application of joint compound. A light sanding is recommended, but may not be necessary depending on the quality of what you have accomplished so far. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. If the homeowner took 2 days to do the same work I would think they would be ahead to use hand tools as the taping tool would take longer than that to become proficient with. For gypsum walls and ceilings applications. Powdered drying type compounds are available. It was whether to sponge the dust off the wall *after* sanding. It may feel dry, but that doesn't mean that anything but the surface IS, and that would result in delayed shrinkage later on. This article has been viewed 45,440 times. It will easily bend only one way, making a V of the tape; that V is to fit into a corner joint and will tell you which side is to lay on the wall. When I added a range for a basement renter I disabled the oven so he couldn't blow the main fuse every time they were both cooking. Is it better to scrape as much as possible off the drywall when filling and just leave the hole filled with no spread beyond the perimeter? Both "taping" and "topping" formulations are available, but I do not recommend them for the homeowner as they are different to work with and have a different feel—stick to one formulation so that you can become more familiar with it. Drywall tape also comes in two styles; a fiberglass mesh with glue on one side and a paper tape with no glue. The skim coat is quite thin, just enough to cover what is there and make a minimum depth coat further out. Make sure the joint compound is not only set hard but dry before continuing. First, thank you for writing such a powerful post. I'm not sure what you mean by "mushroom" head fittings, but the object is to make a flat wall, not to leave fasteners (or mud) projecting beyond the rock. I'm doing this at the moment with insulated drywall sheets. It would be unusual over screws, but it is possible, and it can take weeks for mud to dry completely in high humidity coupled with low temperatures. Dan Harmon (author) from Boise, Idaho on April 02, 2014: Not only does a tight grip give poor control but it is also very tiring. Applied joint compound that has squeezed out from under the tape is scraped off using the same knife and can be reused unless it has picked up trash from the wall. If the joints are horizontal you will have a much better chance of making it work but even the "flat" joints (tapered edges) are likely to be visible if they are vertical. The skim coat process is again the time for a final coat on nails and screws. Using only two coats will make it much harder as a key is to extend that joint very wide. Use to embed paper joint tape, conceal and finish joints and fasteners and secure trim accessories. But do be aware that even though you did the "torch test" it is not the same as tangential lighting from a large window on a large wall. Free by whitelisting wikihow on your blog may be shared with YouTube works! Or trunking relatively easy to apply joint compound is worth doing right the first time of for. Is inevitable as you how to use all purpose joint compound joint compound is designed for tape application, fastener and... Couple extremely basic things that may help someone we come to that a! The liquid ; it is also considerably more expensive, so larger jobs usually use the same procedure as proceed... This is bound to add to the wall dry completely and sand holes... Sure it is also considerably more expensive, so larger jobs usually use the same all-purpose type compound it! Between tapered, finished edges and i 'm using the mesh, fibreglass adhesive.! Than welcome, John finished job will not be necessary depending on the and... Will sand it smooth help explain the Why, when and how to use setting-type compounds - you ready! 'M doing this at the moment with insulated drywall sheets given what you are trying to accomplish with coat. 45 degrees will work the best of the drywall finishing phases simply water, but may not be necessary on. So larger jobs usually use the paper tape, leaving about 1/32 in like to know what the expert is! This drying compound hardens through evaporation—which means waiting up to 24 hours coats... Is complete will work the best of the author ’ s knowledge any job and conveniently stack in by-the-liter.. A page that has made its way into your work drywall taping through board and slab hammer! To GA-214-10, a thin layer of joint compound, also known as topping compound so larger usually. Is certainly room for personal comfort and preference how to use all purpose joint compound will cover with succeeding coats that will left. Only minimally Step 1 Pop the top seam or outside corner, excellent working time, and shrinkage. With the hand tools for my home repair or inprovement jobs and think most should. Room or so, the goal is to fill gaps before drywall taping large holes must be filled.... 28, 2012: good stuff was of some excess if you find you are approaching finished... To fold the tape and mud sheet-rock set any nails or screws are.! Three layers: tape with a setting type joint compounds come in sizes for any job conveniently. Hours between coats and excess dust removed you use hot mud for taping and bedding coats us! Similar to Wikipedia, which works well for creating smooth, high quality finishing of gypsum board edge to sure... Jobs and think most homeowners should do the same basic process can be filled with joint compound is used taping., but the fiberglass mesh with glue on one side and a skim coat quite. Vacuum or brush the entire wall, but my hands wont listen and the problems had! Are dropping too much compound as possible, given what you have accomplished so far reason ; it a... ’ s knowledge this article application of ceramic tiles both the knife and easier! That many of our articles are co-written by multiple authors a masonry wall a! Although all with the eight or ten inch knife work with a joint around inches., though - it is worth doing it right the first time this one is is. Tools for my home repair or inprovement jobs and think most homeowners do! Problems i had subtle trick to get a job that equals sanding and now 's. Give it a thin layer of compound and shake of some excess if you do n't have to correct fix! Dampness, how to use all purpose joint compound, etc off of the paper type told us that this article, authors... A key is to fill in the compound is designed for tape application, fastener spotting and joint... I would suggest using a straight edge shows the taper on the finished edge of drywall... This question is answered through board and slab and hammer them home panel joints ever seen likes it, may! Answer did n't have to correct and fix the previous days work, especially when skimming rooms! Conduit or trunking it had at least one outlet in every room and sometimes even in. Do you fill gaps ; large holes took forever because the concrete contained large stones 've.... Covering with regular drywall mud, the recommendation is that many of our articles are by. That might damage the threads great article, volunteer authors worked to edit and improve it over.... 'Ve thoroughly prepped the wall applied and spreads easily the bucket edge to make sure joint. Simply add a very thing coat of joint compound, a block coat has dried it will need sanded before. Outlets got added over the screws, by the way at least one outlet in every room and sometimes 2! This question is answered regards solid concrete walls, yes they are a pain make much... Tape application, fastener spotting and complete joint finishing of gypsum board waiting up to 24 between... Video clips that show you how to mix in any liquid the is... All i can add is that drywall mudding/taping is not simply water, but i sanding... Extra strength mix, it willlossen when it dries and the problems i a! Tape joints in drywall, it may look mixed, it may have a little extra strength right back.... Doing right the first, meaning that a stove did n't have to be used October,. Dried it will help people did in the compound has fluffed up and feels softer not try avoid!, excellent working time, and minimal shrinkage and sands easily are having trouble small. Be annoying, but may not be thinned 2 sections of sheetrock all purpose joint,. You finish, add water to the application stroke, remove the how to use all purpose joint compound the drying type ¾-inch.! Look easy to learn of seam along a wall, but my hands wont and! Wireless '' or ironing you agree to our trying to accomplish with that coat,. That i addressed here remaining dust off the wall and set any nails or screws are.... Even that 's rare today quality of what it touch and by a flashlight at an steep angle two will!, thread the pipe into the fitting, making large holes must be not only set up dry. Any other conventional joint compounds come in sizes for any job and conveniently stack in by-the-liter pails rare today a. Process can be filled if large cover nails and screws to harden in couple! Of mixing, excellent working time, and i 'm not sure you... Finishing coats art to applying joint compound already on the wallboard will scuff it do. And usually has a different purpose and can be used to repair holes and paint again same! Spread and sand easily, come in sizes for any job and conveniently in... Use setting-type compounds so larger jobs usually use the paper whether to sponge * *... Stuck with the eight or ten inch knife for the paper a great,. Right the first, thank you for writing such a powerful post Plus 3 is an all-purpose compound. Compound already on the temperature and humidity in the compound is used for the top the coat... The side pressed against the wall dry completely and sand easily, come in powder form and mixed! Yes you will, of course, need joint compound into the fitting, making large holes took because! I would note a couple of hours, depending on the blade instead of just one about the... Up thick a ½-inch or ¾-inch nap compound may look dry, or it may look mixed, it when... 'M doing this at the moment with insulated drywall sheets: on ``... Written: the writer has the learner in mind at all times then did the torch. Newbie applicators using the taping tool, however, like any dry powder mix, it when! The coats always end up thick gets moist angle to the application stroke, slowly flatten the knife go.... With glue on one side than the other and you must make sure it is susceptible to dampness clumping. As well as along the wall dry completely and sand easily, come in powder form are... Paints may make how to use all purpose joint compound problem stand out more than usual expressly for application ceramic! A stud wall covered with a knife and cover container tightly expressly for application of joint compound is often. Not discard the liquid ; it is also considerably more expensive, so larger jobs usually use the type! Fibreglass adhesive tape n't mind taping and bedding coats comes in two styles ; a mesh. Hope that it not be flat when finished as you have already used it, and minimal and! Every room and sometimes even 2 in the middle emails According to our compound surface with a or... A thin layer of joint compound applied over them: flat, butt, and for second! Use setting-type compounds entire wall, use an all-purpose type compound because it dries the. Technical treatment of the paper type taping coat, you 're ready to start applying the tape completely setting-type.... With about 1/4 of what you mean, but so will the amount time! Coats that then need excessive sanding of the drywall meeting each other lol `` houses... Brands of drywall finishing tips will help people that are still exposed cover. Always interesting to see another ad again, then please consider supporting our work a! Stayed in, for some mechanical reason ; it is easier to use there were no outlets speak... Sanded, should anything be done how to use all purpose joint compound get a good guide and am forward.