Leah shows and tells you about premixed joint compound, settingtype joint. Ill use ap joint compound or patching plaster or plaster of paris if i have to use something else those have worked fine in the past p of p is just too much of a pain to use for a whole room. Durabond is a dry joint compound that can be mixed to a desired consistency. Mudding over plaster walls with premixed joint compound. Due to factors beyond the control of the drywall doctor, we cannot guarantee against improper use or unauthorized modifications of this. Sheetrock brand durabond joint compound durabond 20. Only make enough sheetrock to use in the time allotted. Strange thing is, i didnt see any of the bubble marks before the. Although plaster washers are designed to flatten as the screw is driven home, they nevertheless, remain slightly proud of the wall surface. Real white lime plaster cant be sanded its so hard. Can you use joint compound to repair plaster walls. Available in 5, 20, 45, 90, and 210 minute set times. It provides low shrinkage and superior bond, making it excellent for projects like laminating drywall.
The difference between plaster and joint compound, explained. Sheetrock brand durabond joint compounds provide a hard, plasterlike surface when dry and are virtually unaffected by humidity. Cgc durabond 90 repair compound is made for patching abovegrade interior concrete and masonry ideal for repairing gypsum drywall and plaster with the strength. Skim coat plaster with durabond 90 im rennovating an old victorian house and have just scraped off wallpaper in one of the rooms. Pros is you can coat flats and angles in the same day. The dap store locator finds the 15 nearest retail locations to the address you specify. You apply this as you would normal drywall joint compound. You will not find this everywhere, but durabond makes it. I usually fill my patches with basecoatit will set up an about 2 hrs then tape joint with nuwall productuse fibause now dura bond. Skimcoating can rescue a wall with numerous hairline cracks but cannot help a wall if the plaster is loose or unsound. For interior gypsum panels and exterior gypsum ceiling boards. If the house shifts and the joint cracks later, you can reactivate this compound by getting it wet again, even years later, allowing you to remove the first job and do a good job over the same joint again. Making an invisible patch in a lathe and plaster wall. Repair surface damage gouges, scratches, surface imperfections in.
Just make sure you use a setting type compound like durabond or easy sand with the sticky tape, dont use regular joint compound for that. Durabond or mud my 10 man hours included lots of setup, it was a dining room with lots of antiques, tear out old plaster, cut and hang 38s drywall, tape, mud and sand, clean and mop. You can reverse it and add powder to water once you are comfortable with the. It hardens quickly you guessed it, in 45 minutes, shrinks very little and dries hard as a rock. With its low shrinkage and superior bond, it is excellent for laminating drywall and patching plaster. Settingtype joint compound allows for oneday drywall finishing and nextday decoration of drywall interiors and exterior soffits. To repair moving cracks in plaster, secure the loose or high side of the crack.
I use a settingtype joint compound like durabond 90 to fill the gaps, mixing up only as much as i. Test the condition of the wall first by pushing against it with your fingertips. Easy sand 90 lightweight settingtype joint compound. Be sure its in the same plane as the surrounding plaster. Allpurpose joint compound is a building material drywall finishers use to spackle, or mud, a drywall installation. Hardening action cannot be prevented or delayed by dilution with water. Life expectancy is defined as the time it takes for the product to deteriorate to the point where the loss of aesthetics can be observed. Use to patch cracks and holes in drywall, wood, concrete and masonry.
It is a powder mix and comes in various drying rate formulas. Its a coarse material that is unsuitable for wall repair unless you cover it with something else, such as joint compound. Whats the best brand of joint compound that you work with. Compounds are also excellent for patching and smoothing interior drywall and concrete surfaces because they. Prepares surfaces for carpet, rubber, wood flooring, and other materials. Default wishlist name cannot be used, please provide a different wishlist name. Start with something like durabond 90 or sheetrock 90 which cure in 90 minutes through a chemical process, not by drying. Replacing cracked plaster with drywall worth effort, cost. Durabond is a setting joint compound with plasterlike qualities, a builtin bonding agent, and a range of available setting rates45 or 90 minutes are most common. The mixing ratio is 3 parts powder to one part water.
Quick set lite compound provides a lightweight, easy to sand finish for. A general purpose, gypsumbased floor leveler and patch. The durabond 90 will produce a gorgeous smooth finish that will match the existing plaster and its sandable. If there are multiple cracks or areas to patch, use a dry joint compound that can be mixed to a desired consistency, such as durabond, available at most builders supply stores and online. Do not overmix or use in temperatures with cgc durabond settingtype joint compound.
From what i can tell, plaster of paris seems to be the strongest, but sets up within 30 minutes of mixing. As far as spider cracks and straight line cracks take the tip of a screwdriver, line it up with the crack and slightly apply pressure and drag a concave little trench so the durabond has a base to adhere to. The compound is lightweight for easy handling and sands easily for fast, smooth finishing. Skim coat plaster with durabond 90 the walls are plaster and there are some cracks some hairline and some an inch wide with a few places that open up to about the size of a mouse pad. Durabond 90 dries in 90 minutes, and other variations are faster and slower drying. The reason joint compound is called mud is because most of them will become soft again if they get wet unlike plaster which stays hard. For instance i would use durabond 90 with fiberglass if i was patching a large plaster wall that was cracking up from stress fractures. Plaster vs joint compound whats the difference youtube. For starters, buy a bag of 45 minute setting drywall compound. Try to put it on over the structolite so its extremely smooth and free of surface defects.
Once set then mud and tape the prefilled hole spots and let it set. How to mix and use rapidset joint compound projects text. A good job will use two different types of plaster. At the joint between the existing wall and the new patch, apply self adhesive fiberglass mesh tape. Also a couple of the corners had crumbled and are now dug out with trenches about an inch wide. How to repair plaster cracks old house journal magazine. Setting compound durabond 90 is forced into the crack from both sides to ensure all voids are eliminated. On my plaster reconstruction jobs i have a special mix with 2 or 3 different muds and quartz. I use a settingtype joint compound like durabond 90 to fill the gaps, mixing up. Let the gypsolite dry a day, then skimcoat itthat is, apply a final thin coating of quickdrying finish plaster such as durabond 90and then tape between the old surface and the new. Settingtype joint compound is ideal for heavy fills in drywall interiors and exterior ceiling boards.
Nonsandable dries harder and slightly stronger, and we usually use it for the first coat. Exterior joint treatment mix cgc durabond settingtype joint compound according to directions on the bag. Old house authority ask the authority plaster repair. If youve used regular premixed drywall joint and topping compound that comes in a bucket before, then you know all about being patient waiting for it to dry. Repairing plaster walls found in older homes does not need to be intimidating. When rought sanding make sure the edges and stop marks are sanded good,or the. We use high denisity 90 for taping through the taper. Sheetrock 381630 durabond 90 joint compound, 25 lb. Durabond is a setting joint compound with plasterlike qualities, a builtin bonding agent, and a range of available setting rates45 or. Compound is ideal for heavy fills and are virtually unaffected by humidity. Sheetrock joint compound is use for patching and joint finishing, 60 minute working time and hard finishing surface. Mix the durabond 90 with cold water to extend the working time. Then fill the crack with a coat or two of stiffly mixed joint compound to raise and level out the crack.
Please note the specific item you have requested may not be in stock at the time of your visit. It is good for skim coating on many surfaces, but for deep and wide patching, you may want to use a setting type joint compound that gets almost as hard. Take the warranty and shove it up their asses as far as i care. I was told that durabond 90 is the best for plaster even though i dont. As far as spider cracks and straight line cracks take the tip of a screwdriver, line it up with the crack and slightly apply pressure and drag a concave little trench so the durabond has a base.
Light sand 90 in the 10inch,and regurlar mud for finishing. The walls are plaster and there are some cracks some hairline and some an inch wide with a few places that open up to about the size of a mouse pad. Durabond vs easysand i have used durabond brown bag for 30 years easy sand is softer, also most of the drywallers i have worked around cant use brown bag cause they have a hard time working with it and keeping it smooth, so with easy sand if. Economical, plaster patching product for everyday household repairs to plaster and drywall. Patching compound made with calcium sulphate, limestone and crystalline quartz, patching compound sets in about 20 minutes and makes durable repairs on wood, plaster and concrete, and it can be used to level subfloors. When, where, why and how we use durabond in northern illinois.
A fill or cover coat that completely hides the tape is required. In the video above we add water to powder to show visually the water to powder ratio. Durabond 90 or other 60 or 90 minute products set chemically before drying which prevents shrinkage. Usg sheetrock durabond 90 natural joint compound 25 lb. First wet the lath and plaster around the cleaned crack to help the patch adhere the old, dry materials tend to suck the moisture out of the new plaster before it can fully cure. Patching plaster has a longer working time, and of course drywall compound comes in a bucket ready to go. Allpurpose joint compound adheres well to most surfaces, so you can use it to make repairs on plaster walls. Skim coat plaster with durabond 90 plaster forum drywall talk. Durabond also comes in sandable or nonsandable versions. For example, if your project entails installing a small patch to repair a section of cracked plaster, you can use all. Usg sheetrock brand durabond settingtype joint compound. It comes as a powdermostly plaster of parisyou mix with water as you need it.
How prefilling with durabond can fix a rough drywall. It comes in 20, 45, and 90 minute setting varieties. Use a spray bottle and damp sponge to clean the dust off the plaster and prepare the surfaces for infilling with 1 a settingtype compound such as durabond or 2 plaster such as gauging or plasterofparis. To fashion a strong bond between the old plaster and the patching compound. Durabond is a joint compound type of product that is often used on the 1st and 2nd coats of drywall installations. Sheetrock easy sand 20 lightweight settingtype joint compound sheetrock easy sand 20 lightweight settingtype joint compound is ideal for heavy fills in drywall interiors and exterior ceiling boards. Just have to be careful not to get to heavey on the bond. In house repairs, i recommend to use the type that is harder or softer depending on the surface applied to. I have some jobs out there for the past 12 years with no cracks, no tape or mesh on them either. It provides low shrinkage and superior bond, making it excellent for projects like laminating drywall and patching plaster surfaces.