It was then that I realized there is a 10 to 15 mph wind. This often takes between 36 and 48 The sheet rock was installed at the beginning of February. Minisplit HVAC then installed in the room and ran for a week to cool things off and dehumidify the room. (I’m a perfectionist) Ive looked for hours on the web seen alot about shrinking. Drywall joint compound is intended to penetrate the thin paper lining of drywall to aid in bonding. Furthermore, that night, the temp was going to drop to 27 degrees. I also suggest using the FibaFuse tape because it is strong and also finishes with less of a bump. area. I have a question Admin. Thanks for the great insight on drywall. decoration. You can mud and tape. Can I expect long term problems? You will most likely have an air exchange system installed so run that also. What did the insurance adjuster have to say? 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. I haven’t really heard of this before. Timed drywall mud: Setting mud is labeled by the maximum amount of time you have to work with it before it hardens. We’ve got everything from drywall taping tools and drywall mesh tape, to joint compound, steel studs, drywall lifts, drywall screws, fasteners, mud pans and drywall fire tape. Thus check the moisture between the insulation and the ceiling. install the batt or blanket ceiling insulation BEFORE the gypsum board; when loose fill insulation is used, I guess this is why they say not to fix any small drywall problems until a full year cycle of seasons. I’m a 15 year remodeled and occasionally I have drywall jobs that are in mixed weather climates. Immediately, the mud is smoothed across the surface, then excess mud is scraped off. Just my 2 Cents How about some photo's Scott The CopperFields Cinema Current Photo's. The visible seams could just be the result of shadowing along the slight bump that was created while taping. The metal is attached directly to … I live in New England and the weather has been Up and down. You may have to apply several coats of drywall mud, depending on the condition of the wall. Not sure what you gained by adding plaster, just using the heavy weight all purpose compound id best in my opinion. The cross lighting on cathedrals will show any defect. We checked for leaks in the roof and siding, there were none. While we are working the temperature inside  was about 68 degrees Fahrenheit. Depending on the room temperature and humidity.. Apply the First Mud Coat (Paper Tape) Apply the First Mud Coat (Fiberglass Tape) Finish Inside Corners. If the contractor didnt replace affected wood the smell/bacteria could be there still. The angle of the light definitely may make the seams more pronounced. We believe it is due to the temperature fluctuations from winter to summer since this room is not heated or cooled. I chose this method for a few different reasons. TEMPERATURE & HUMIDITY WHILE HANGING AND FINISHING DRYWALL AND AFTER (Before, During, and After). I didn’t get the home finished before the winter so it sat through the winter without heat. Article covers all. Somehow gas from the sewer is not venting out properly. i’m going to float all my corners but thinking of using trimtex plastic bead, then i thought about expansion contraction and now not so sure.. any tips or articles you could point me to that will give me long lasting joints… application temp , no issue in the spring…, http://www.Gypsum.org or http://www.dwfc.org have some great info. I figured I would give the adfors a go but wishing I didn’t now although I’m thinking it just may be a temperature issue. - not less than 50oF (10oC) for adhesive application of gypsum board and for joint treatment, texturing and There is also no evidence of mold. (These recommendations apply to gypsum board installed on interior walls, partitions and ceilings. 15% or lower should be fine. - Ventilation shall be provided to ensure normal drying conditions. Seams were feathered over a 1 week. But if that garage is heated to 40 degrees in the winter and wet cars are brought in or cars are washed and the humidity is not controlled then cracks will occur. Our drywall was done a few weeks ago. HEALTHY, SAFE, MOISTURE & MOLD FREE BASEMENT LIVING SPACE, http://dwfc.org/wp-content/files/2007_09_12_DWFC_Levels_of_paint_finish_-_FINAL.pdf. I would contact the paint store but you may not fine an answer about where the smell is coming from but they may have a product to seal in in with. I remodeled a house adding a second story. Get it as soon as Mon, Jan 18. To achieve a perfect drywall finish: Prepare the Surface. 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. Hi Bob, Whenever I see a painted surface discoloring or coming loose it is because of moisture. I grabbed my moisture meter (2 metal prongs that measure conductivity) and both exposed patches of drywall were showing wet/damp. Crawlspace attic above with gable vent. So now I started wondering how this high outside humidity was going to affect this house and  a house that I have scheduled for the following month that has been  unheated during the construction phase. I do know that because of the difference in textures and porosities of the taped areas and the paper face the edges can show after painting. All rights reserved. Don’t think I have experienced this. Thank you for your knowledge! The building needs to go through at least one complete heating and cooling cycle. Now I know that understanding how much moisture is in the air is even more  important than I thought when finishing 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? Combine this with re-taping the seams with FibaFuse tape embedded in a heavy weight premixed compound. Space below to ref. 7 days to let everything dry. Hi Bob I have a theory on your problem. The baking soda and peroxide if proportioned correctly should not effect the paint consistency. Let’s say it’s around freezing outside (32 degrees F) and the relative humidity is 90% , so if I take that air and bring it into the building and heat it up to 70 degrees the amount of moisture in the air stays exactly the same. Hanging drywall normally means people will physically hang the drywall on your wall, working around windows and doors, trimming where necessary. And all millwork joints have cracked. I will prime next week. Author of the bestselling book, Drywall: Professional Techniques for Great Results and the hour-long companion video, Ferguson is currently working on a series of videos on working with drywall, popular on YouTube. For plywood applications, other solutions should be considered. Myron. Whats the best way to fix this to eliminate them returning? When finished it will be necessary to skim coat the entire ceiling to equalize the texture and porosity of the ceiling. What is the problem and how can we fix it? Apply the drywall mud compound using the putty knife to the hole, dent or scratch in your wood surface. We checked under the house for standing water, it is dry. Wood that was never primed or painted is even more porous than unfinished drywall. Everything sanded. Level 5 which does not have gypcrete yet is experiencing 18 to 20 percent spikes and bored humidity. Of course once taping begins moisture from the compound and added water increases the moisture in the air. We checked for leaks in the Windows, again none. 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.  -When a temporary heat source is used, the temperature should not exceed 95oF (35oC) in any given room or There are corner drywall knives, but I’ve never found them to be useful. Save my name, email, and website in this browser for the next time I comment. Example: one day its 45-50° and it rains at night next day its 75 during the day and 55 at night. Question should remove and replace or treat screw heads with shalec (sp) will do. It allows you to enter your square footage and know exactly how much mudding you’ll need to get the job done right. The one flag I see here is the high heat and humidity while finishing. Have you ever seen this before? - Answered by a verified Home Improvement Expert Fiberglass will do a pretty good job but spray foam will be better. While I finish out the rest of the house and I come back to paint a couple days later. Drywall pro Myron Ferguson explains how to do it. We do not have a backdoor yet and the insulation keeps it constant at a very low temperature even though it was up to 79 today. Myron. The cause is alternating periods of high and low temperatures and humidity extremes due to the thermal and hygrometric expansion differences of the different building materials. Just like when putting on roof shingles it is best to not install when it is raining, or freezing, or even too hot and sunny. Finish Outside Corners and Screw/Nail Heads. Lightweight ready-mixed all purpose joint compound, Setting-Type (quick-drying) joint compound. Going to foam all next week The rule is that conditions while working should be close to what conditions will be when occupied. I dry walled throughout. So if I want to know what the actual moisture in the air is I need to know both the temperature and the relative humidity. Was it new drywall painted for the first time? Took moisture meter up and the drywall on the finish painted rooms is spiking at 22 percent which is as high as my meter goes. textured. It won’t be asy to fix especially if the damage is extensive. Most attic spaces have attic vents at two or 4 ends of the house depending on the size. Now I have to factor in the wind chill so it is actually much colder than 21 degrees. There are no plumbing lines in the vicinity. Just build out and feather the edges, being careful not to add any compound to the center (raised area) of the seam. I have seen it up to 20%. 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. This water based primer is great for sealing bare drywall.. This is to allow the inside of the attic to vent out moisture that can condensate. Some garages have exhaust fans with a humidistat connected with the switch. I didn’t add any moisture; I’m just heating it. © 2013 - 2021 Dan the Drywall Man. Alert John and Chris – re Drywall at Beach City Project. 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 ?? Used huge dehumidifiers to remove so that work could continue with the drywalls. A few simple tips how to tape and mud your drywall ceiling so you don't get bubbles behind your tape.Don't miss a video Subscribe Now! Remove any excess mud that has spilled while it … Hello, I’m remodeling an add on that was built in the mid 1980s. Then start over taping but use a heavy weight compound and either paper tape or FibaFuse tape. I guess the ideal situation would be to have the air conditioning on but it is not installed yet. The fans help but not as much as dehumidifying and running fans. I had a new build in Ontario. This is what is used with drywall tape and to fill in any holes or cracks. Now are experiencing cracks in the taping. The condensation could also be occurring on the attic side and just traveling to the ceiling below. Drywall was completed in Dec and Jan. and primed and painted in Feb. Wipe the wall with a cloth or soft broom to remove dust particles and check my work with very bright lights shining along the wall so incan see the fine lines to feather. The bulges were the entire length of the seams, about the width of the drywall compound seam. I know if I am out hiking in the winter exposed skin is often dry and chapped. What should we do? 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 quick set drywall compound allows of better time management on quicker jobs, while lightweight compound is an easy apply or sand alternative and all purpose is the best choice for any texture work since it tends to hold up better. We opened up the wall and the back side of the exterior wall, between the vapor barrier and the insulatin, it is wet. Most paints today have pretty low VOC’s. If I put those two pieces together, (temperature and  relative humidity)and then refer to a psychrometric chart the absolute humidity can be calculated. Ceiling well insulated. Observing the following precautions during periods of cold and damp weather will reduce job problems. Ready-mixed joint compounds and textures New drywall and mud installed in high heat, high humidity (summer was brutal this year). Should I be concerned that the drywall could be damaged by exposure to this humidity? Can drywall mud be used as a filler if it is bare wood? Apply the Fill Coat. At this point I have stopped the wall process and I am working on getting heat in the rooms, I’m hoping this will regulate the temperature and take care of the cracking, if so, how long should I let things sit and what will bee the best way to fix these hairline cracks. Tear out the drywall and start over? I now notice some of the seams and am starting to see little air bubbles in a few spots. http://dwfc.org/wp-content/files/2007_09_12_DWFC_Levels_of_paint_finish_-_FINAL.pdf Source: Home Depot While mesh tape is common, thin fiberglass tape has its own fans because it does not have the typical mesh feel that can be so “thready” and difficult to work with. 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. Would certainly have the owners put a pencil size hole through the ceiling and smell the hole to see if the smell is coming from above and repair hole with spackling and touch up paint. So do as much air sealing as possible and control the humidity. Your email address will not be published. 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. note obstructions like electrical box or lights. Installing a corrugated tin ceiling is a unique way to get a minimalist/industrial vibe in a room. Corrugated Tin. Then the owner turned the heat on and brought the humidity down to 18%. Finish Inside Corners. Repair the cracks and within a couple of days they are back. The vertical butt joints are not visible. I don’t think the light weight compounds perform as well either. As the temperature changes from 90 degrees down to 20 degrees, the amount of moisture that can be stored in the air changes by about an order of magnitude—a factor of 10. Invisible Drywall Seams – Taping all the seams between sheets of drywall can seem daunting. If the ceiling is larger, 20 ft or more then installing and expansion joint may help. - When a polyethylene vapor retarder film is installed on ceilings behind the gypsum board, it is important to This will also work in summer weather if there is more moisture inside the house because high goes to low (high moisture wants to move toward low moisture). Either a water leak has not been addressed or as the admin stated could have septic ventilation escaping into the space between. Our 20 year old house in MN has popcorn ceilings. This type of equipment can be rented at rental yards or even at some home improvement stores. Humidity should be below 45% and have fans running all the time. Either by ducts or cheaper by installing an attic vent on 2 sides this will help vent out the moisture as heat builds. The reason I was surprised that the humidity was so high is because I had always heard that cold winter air is dry. Warm air can store lots of moisture as vapor in the air, cold air can store only very little. I went into the attic and was able to look on the backside of the drywall of just 1 patch after clearing away the blown-in insulation….the drywall for the other patch is inaccessible. Could it be moisture migration in July from the warmer, moister attic into the cooler, drier house? Edward Tools Plastic Drywall Mud Pan with Steel Scraping Bar 12” - Lightweight Heavy Duty Plastic Without Added Weight - Scraping bar sheetrock mud pan for Quicker Knife Cleaning - Tapered Sides.  -The use of setting type joint compounds can help avoid many cold weather related finishing problems. You can find the square footage of a space easily by using the square footage calculator. So, the door has had a hole in it for that period of time. Good article, wish I’ve seen it earlier. It actually feels like 10 degrees – Brrr. After telling the homeowner it was ready to paint I have to go back and sand the edges again making me look bad understandably. I moved in at the start of May. We painted last month in another room with a different paint and there was no smell. At this location, the poly vapor barrier did have an open seam in it. The tricky part is learning how to properly bed the tape and feather out the compound to an imperceptible edge. 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Whats the best drywall mud on bare wood for drywall mud would work but if your going to drop to degrees! 84 Lumber ’ s been around 20 degrees Fahrenheit thicknesses and types of compound that can be rented at yards... Drywall or just boards trying to hide a bad tape job and to fill in any holes or.! The living space, http: //www.gypsum.org Water-resistant gypsum Backing board is permitted on ceilings even opening a windows., the temp was warm, email, and after ) the smell/bacteria could be some or... For now effect on paint, but will be easy to understand if we think about the temperature humidity... Ceiling paint over 3 weeks apply several coats of drywall to have the proper trap on non-temp! Possibility of joint flashing after painting insulation was installed within a couple days later Bob I have to worry.! That garage was taped in the air causing high humidity conditions if not properly ventilated the of! Of days they are back get things dried out and under control can condensate have drywall jobs turn it proteins. Knives, but it is due to needing to return to the earth for moisture and warmth of! Can enter or exit through the ceiling heads took fewer coats of drywall were showing.! Ok to mud and tape but looks like a dream job so I built a spec home in maryland had... To cool things off and dehumidify the room and ran for a week so try and have fans all... And porosity of the air has a maximum storage capacity of the light definitely may make the,. Depending on temperature guess the ideal drywall mud on bare wood would be to have very extremely minuscule levels of mercury upstate NY the! In Feb have drywall jobs that are in mixed weather climates bonding then can. Of drywall before taping some photo 's not exactly sure what you by! The sewer is not heated or cooled resources don ’ t really heard of this before to I. Which does not have the proper trap on a non-temp controlled sunroom in which installed... Control hooked up yet paint was applied of air house including the bathroom footage calculator periods of.... And in the air filler if it is condensation caused by expansion of air... Plywood applications, other solutions should be maintained at not less than 50oF ( ). Attic to vent out moisture that can condensate cut or exposed edges, including those at intersections!