Ever wonder why drywall compound takes longer to dry when other times it will dry quicker. This weeks blog is about finishing drywall to a paint-able finish. So, lets begin.
When drywall installers install drywall its important that the drywall is installed correctly. For example, you have finished edges from the factory that are beveled. You want the drywall to be perpendicular across the framing for more rigidness. And you want the drywall to be nailed or screwed every stud and every 12″ on the stud for ceiling joist. What you do not want is the drywall to be placed and not really tight as this will cause cracking in the compound and not adhere correctly.
When the finishers are applying the compound, they may use different types of drywall tape for the best application. For instance, if it is against the drywall that is existing, then you will have a cut edge and its best to use mesh drywall tape instead of paper tape. In the corners you will have papertape to cover the corner. There are other drywall finishing instruments as well depending upon the type of job but lets stick with these 2 for now. When finishing drywall its important that the edges meet up and are as flat as possible. In union school, I was taught, factory to factory and cut to cut edges. This usually applies to most applications. In remodeling most of the time.
Most of the times the drywall finisher will apply the tape and a good first coat to cover the tape. Most drywall finishing will need 2-3 coats depending upon the application. In some cases matching up to existing plaster for a small repair, it may need 4 to really feather it out. But when finishing drywall the real trick is applying just enough so the compound can dry evenly and at a normal rate. Some will leave heat on to help or place heaters in the rooms. Some have used De-humidifiers, some use an instant compound you mix on site. This is all great, but if the wall or ceiling temperatures are not at at least approximately 65-70 degrees then the drying times will be longer. I always recommend to keep the room at a comfortable range so that the drywall compound can dry smoothly. Adding extra heat or keeping the ac on can cause cracking and bubbling sometimes and will delay the process. And yes doing ceilings against the attic the compound may dry quicker due to the heat in the attic.
So in closing, the next drywall task you do whether its a small job or a complete remodel, make sure the room is comfy. Not too cold and not too hot. Make sure the finisher has experience in feathering joints. Ask them when they use a 6 inch knife compared to a 10 or 12 inch knife. And lastly, if you see big hunks of compound applied and its going to take a belt sander to finish stop them. The problems will arrise later on as the seasons change. Sometimes drywall joints will crack when the home is acclimated over time. To learn more, go to www.pascoremodel.com or call us at 352-322-2700. Thank You.