Excessive humidity this Spring as building was being enclosed. (I’m a perfectionist) Ive looked for hours on the web seen alot about shrinking. Your email address will not be published. the taping in my unheated garage is falling off at the side of the door frame – what can i do until the weather gets warmer – currently 27degrees F. The cold air is getting in ?? (my email is earthwares@yahoo.com ). All I did was heat it. No mud and tape but looks like a light coat of teal paint was applied. 4.6 out of 5 stars 345. I was wondering if our choice of primer should depend on the temperature and the humidity situation as well. Mudding involves layering thin coats of a special compound over the drywall joints, scraping it smooth, and ensuring that all cracks and crevices are covered so you have a nice, flat surface to paint later. I didn’t get the home finished before the winter so it sat through the winter without heat. If drywall has been left unfinished for 3 years it will most likely have to be primed with a stain blocking primer after finishing. mark obstructions on drywall with pencil. The waited 4 days then primed with a PVA primer and textured over that. The reason I was surprised that the humidity was so high is because I had always heard that cold winter air is dry. The biggest problem you will have is hiding the bump you will create by applying new tape and more compound. Maybe even opening a few windows now and then when it is cold outside to dump some of the moisture in the air. Not sure about the windows but you definitely had too much humidity. At this location, the poly vapor barrier did have an open seam in it. Observing the following precautions during periods of cold and damp weather will reduce job problems. Somehow gas from the sewer is not venting out properly. I don’t think the smell has anything to do with the drywall work. Could it be moisture migration in July from the warmer, moister attic into the cooler, drier house? I’m not going to lie. I also like to run fans around the clock. This compression is caused by expansion of the drywall and the result is panel edges being forced together. Hanging drywall normally means people will physically hang the drywall on your wall, working around windows and doors, trimming where necessary. Is there anything else we can do to stop the dimples when we’re dealing with a contractor who is only worried about schedule but has SPECT smooth walls and smooth ceilings in these conditions? brown staining). What would cause moisture to build p in the wall cavity and how do we get rid of the moisture? This will reduce the possibility of joint flashing after painting. No mud and tape but looks like a light coat of teal paint was applied. For information on joint treatment drying conditions, see Joint Treatment Under Extreme Weather Conditions (GA-236). Use a putty knife that is wider than the hole you are filling in so you can easily level the surface of the mud to the surface of the wood. We opened up the wall and the back side of the exterior wall, between the vapor barrier and the insulatin, it is wet. New drywall and mud installed in high heat, high humidity (summer was brutal this year). My question is, should the drywall be removed or would it be ok to mud and tape now? We had the drywall person hang and tape a 24 by 32 addition with2x6 studalls and a valued ceiling. So you have this air movement combined with high humidity in the interior because of all the moisture being introduced during the construction process that is causing the water to condense when it hits the cooler air in the wall cavity. No one is living in the house so it went unnoticed for a week. Our only other option is to put some type of wood board over the drywall or just boards trying to hide the ugly seams. If I put those two pieces together, (temperature and  relative humidity)and then refer to a psychrometric chart the absolute humidity can be calculated. About 8 years ago we built on a non-temp controlled sunroom in which we installed drywall on the ceiling. So ventilation and circulation is important. Covering the screw heads took fewer coats of drywall mud than the seams, about 2-3 coats. I always say that because the crack is not just on the surface you will have to V out the crack and fill with compound. We have spray foam insulation. Hi Bob, Whenever I see a painted surface discoloring or coming loose it is because of moisture. But because the storage capacity of the air has increased with temperature, the relative humidity drops. HEALTHY, SAFE, MOISTURE & MOLD FREE BASEMENT LIVING SPACE, http://dwfc.org/wp-content/files/2007_09_12_DWFC_Levels_of_paint_finish_-_FINAL.pdf. By July, I could see noticeable bulges on the horizontal seams of a cathedral ceiling. Cold and damp weather conditions can contribute to joint compound bond failure, delayed shrinkage, beading, nail popping, joint shadowing and board sagging. This is what is used with drywall tape and to fill in any holes or cracks. If worried about compound and tape bonding then you can seal with a bonding agent first. I would recommend considering a ventilation addition to the Sunroom. I dry walled throughout. Just before  the insulators were scheduled to come,  I visited the job  to inspect all the air sealing that was completed by the contractor in the wall cavities and in the attic. … Add the baking soda mix then the peroxide. Try to locate the smell. Instead buy nicer corner pieces and more sizes of putty knives. Testing the drywall…it is extremely moist. This water based primer is great for sealing bare drywall.. The moisture gets past the open seam in the barrier and has accumulated on the backside to the point where it’s breaking the bond of the paint/popcorn to the drywall? (R702.3.7) The drywall look good but I have had an very strong odor after they where done, it has been about 6 weeks now and I am still having to keep my bathroom door closed because of the smell makes me nauseous. Immediately, the mud is smoothed across the surface, then excess mud is scraped off. How do you get the drywall "mud" dust off of old, unfinished hardwood floors so they can be sanded and refinished? What I needed to figure out was how temperature, relative humidity, absolute humidity, and dew point affect my drywall jobs. Can drywall mud be used as a filler if it is bare wood? Have you ever seen this before? Drywall joint compound may temporarily stick to plywood, but will be unlikely to remain attached to plywood for a prolonged period of time. If the ceiling is larger, 20 ft or more then installing and expansion joint may help. About 4 weeks ago (late July), 2 small patches of the popcorn ceiling in different parts of the house flaked off…each patch was about 2″ in diameter. We also have many varieties of drywall and steel framing, as well as joint compound and drywall tools. Provide sufficient ventilation to ensure normal drying conditions. gypsum board should be completely dry before taping and finishing. Termites will eat the wood of your home and turn it into proteins and fats. I just finished taping a house yesterday and the temp and humidity will be very high the next few days and I am not worried. They do make a cold weather expanding foam. Would recommend low odor killz primer and paint with a small amount of baking soda and or peroxide mixed into the paint to repel any odors. Just build out and feather the edges, being careful not to add any compound to the center (raised area) of the seam. You can mud and tape. I have seen it up to 20%. What is your coverage area? Nothing read here applies to my situation. Make sure you have enough insulation in the attic and seal all penetration where air can enter or exit through the ceiling. The builders removed the deadbolt from the door due a problem with it over a week ago. The sheet rock was installed at the beginning of February. The problem with un heated and often un-insulated garages is that whenever you bring in a hot vehicle along with moisture the temperature extremes combined with the high humidity causes problems with the drywall. So what happened, let’s think about it like a glass of ice water; the inside of the sunroom/your house was insulated like the glass does in the glass of ice water. We have three major types of drywall compound to choose from; lightweight joint compound, quick set joint compound and the all purpose compound. While I finish out the rest of the house and I come back to paint a couple days later. Thank you for this article. we are doing a commercial rock on wood project with a tight schedule. Ended up drywalling the ceiling and painted all in two days, I noticed that they were using a hair dryer to dry the mud so they could put the second coat of tape and paint. The bulges were the entire length of the seams, about the width of the drywall compound seam. After 3 coats of mud the joints kept cracking on the ceiling, I tried pulling the tape off of one of them and using paper and the others I sanded down to the mesh and used 45, all looked great where the 45 seemed to be much stronger, I thought I had fixed the problems until I primed it, they all work there way back. The one flag I see here is the high heat and humidity while finishing. It is condensation caused by air movement through the wall assembly.

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