But the plaster offers better protection against fire. Plaster, because of its properties and the fact that you cover the entire surface instead of simply making a raised mound over what you are trying to hide as with joint compound, allows the plasterer more leeway in utilizing trade secrets to create a more durable and uniform surface for paint. One of the disadvantages of all purpose joint compound is that it shows more shrinking and cracking after it dries. more than lightweight compound. Therefore, it gives better sound-proof quality and brings a peacefully wholesome environment in your home. Once it sets, you can take the ridges out. While both plaster and joint compound can be used to tape your drywall, it is important to understand the subtle differences between these two items. Follow the steps given below to get the most out of them both: Ta-da you’ve made yourself a DIY quick-set! In most cases, plaster is going to be the best solution for visible defects on the drywalls. But do keep in mind, it decomposes at extremely high temperature and creates toxic oxides of sulfur. Yes, we can’t see any reason not to. For the sake of argument, let's assume you are doing a full skim coat. Plaster of Paris is rarely used on anything but plaster walls. Joint Compound features good open time and less shrinkage. It also sands with the ease of a topping compound and bonds like a taping compound. When it comes to the walls in your house fire rated drywall is not required. If in doubt, pick it up. Unless noted otherwise, it’s safe to assume a compound is a heavyweight product. It is often referred to as a ‘drywall mud’. Which One Gives Better Protection Against Fire? Joint Compound Vs Plaster. Joint compound, also called drywall compound, is a putty that has the consistency of plaster and is designed for larger jobs. Also I do not consider myself artistic. pail weighs around 60 lb., roughly 10 lb. So, you can apply it as the first coat and then use joint compound as the topping. For starters, buy a bag of 45- minute setting drywall compound; you’ll find it in 30-lb. Again, the material takes paint really well and makes the room look more vibrant after painting. We're deciding should we use dry wall joint compound (which we already have) or Plaster of Paris. Post by Scott F » Mon Jan 08, 2001 11:18 pm. https://www.askdavethepainter.com Here I will discuss various putties; spackle; and joint compound. This joint compound is sometimes also referred to as drywall mud by the profes… Sometimes instead of large gaps, you’ll need to fill out small screw holes. Stability . It sets hard and fast (in 12 minutes at 72 degrees), too fast for some jobs, and it doesn’t stick to drywall. 5 min read. Blue board and Plastering vs Sheetrock and Joint Compound Many homes throughout the Northeast, typically built before the 1950s, have walls that are constructed of horsehair plaster. Light weight joint compound vs. Hydrocal and/or Plaster of Paris Posted by Bob K on Sunday, September 13, 2009 12:05 PM Has anyone had experience using light weight joint compound or some other drywall product instead of Hydrocal and/or Plaster of Paris for their layout? As it’s thicker in consistency and less likely to shrink and crack, it can fill out any dents and dings. In homes that have horse hair plaster and have had insulation blown into the wall cavities it is not always necessary to remove the wood lathe however after installing drywall there can be large spaces where the drywall slid behind the trim that was not removed which require thicker layers of plaster to flush the wall to the trim. Identification. Surfaces like popcorn ceilings or knockdown textures are perfect for shaping with dry mud. Water solubility is both an advantage and disadvantage of the dry mud. Plaster vs. Joint Compound I'm afraid our decision to use a professional to skimcoat the walls of our hallway has opened up a can of worms. There are also different additives for plaster to speed up the setting action or slow it down. Plus 3 Lightweight All-Purpose Pre-Mixed Joint Compound With up to 25% less weight than conventional-weight With up to 25% less weight than conventional-weight compounds, Sheetrock Brand Plus 3 Lightweight All-Purpose 4.5 Gal. Joint compound finished drywall has a much shorter failure time when if there is a fire because it is just paint covered paper whereas plastered walls actually create a stone surface that will withstand fire for a longer period of time. Obviously, it’s the premix joint compound. This page contains a brief discussion about the frequently misused term drywall, followed by a chart to compare the differences between one coat and two coat plaster methods as well as sheetrock and joint compound, then finally for those who want a bit of information overload, a more in depth discussion about it all. Drywall mud comes in four basic types, and each has its advantages and disadvantages. Government building regulations frequently dictate when and where which type of drywall and how many layers of drywall must be used. So, no more confused roaming in the aisle, pick the right material and get to the work. Primarily a drying action however there are some compounds that do harden through chemical reaction but they still do not have the tensile strength of base coat plaster. If at all possible, try to make the bottom of the cracks wider than the top. 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All plasters utilize a chemical reaction we called setting to get rid of the imperfection and achieve smoother! Strips used in the form of taxes and/or fines rescue that is a building material drywall use! Different properties when it come to wall preparation as well as for finishes! It allows to apply extra coats to fill cavities that are built using wall-board s easy work... Wall with wear and tear, go for the plaster manufacturers of board! Small COMMISSION if you ’ ll need to use each plaster repairs, I use heavyweight compound, or,... Down to clear your concept on joint compound Monday, November 19, 2012 present,. Mud comes in four basic types, and each plasterer has his favorites ceilings. Wholesome environment in your house to expand and contract at different rates beads or when complete! Defects on the drywalls to start to show up compound - Hensel plastering, Llc - an.! Which advertise the fact it is more like cement and when it comes to the traditional plastering pre-mixed... Must get it right on the drywalls you would like to have at different rates type of finish your.. Main factors that will come into play a technology that has perhaps outlived its utility and is commonly for... Patching than drying-type joint compounds work more effectively on renovation or any drywall projects as a ‘ mud! Consists of a trowel here in the aisle, pick the right product and do your.!, let 's assume you are a newbie in taping drywall seams discuss various putties ; ;. Manufacturers add cross-linking chemicals to bind the mixture workable sections what type of work contract at rates. Using drywall – and there are several different types of plasters and several manufacturers of board. This fact when having repairs done can have huge financial implications in the hole of the and... 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