Master Bedroom concrete failure There were several cracks in the floor which were never addressed, so when it rained heavily I got water. In some spots went back and put on a second coat – removed all flex, noise, and made the floor level as desired. Where the tiles cracked isn't where the damp patches appeared on the will in the living room. Dark patches on walls that can be damp to touch - Determine that the brickwork / masonry is actually wet and not just the plaster or wallpaper. Be sure to do all the layers in the same day and do not exceed 1/2" thick per layer. Damp proofing a basement floor is not always as easy as applying a membrane and then installing carpet or parquet. Ronald, the Top N Bond Concrete Patcher is polymer modified and can be placed from 1/2" down to a featheredge. A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. In extreme cases, when you started with wet concrete or when the ground beneath the slab is very wet, the floor can actually be damp and slick and moisture will condense beneath objects placed on the slab. Water can find the tiniest hole or crack, then make it much larger. A damp proofing concrete floor solution is particularly important. Add a layer of poly on your concrete for the radon. I was using Multi-Purpose Construction Material & Non-Shrink Grout. Wait at least 24 hours before walking on the patch and a week before driving on it. For decorative concrete there are three potential problems with a lot of moisture coming out of slabs. I want to cover all the cracks then resurface it my uneven garage floor. Why did DEC develop Alpha instead of continuing with MIPS? half of my 1950's garage floor is cracked and portions have sunk about a 1/2 inch at the deepest point and there are several large cracks. Unfortunately we do not have the products that you are going to need to do this project properly. The worst place I would pull gallons of water out of my dehumidifier, once coated with 2 part epoxy paint their was hardly any moisture in the air being removed. While concrete is a strong construction material, it can still crack. You might try putting plastic down over one such area, and the dry area next to it; does the spot get bigger or smaller? How to Stop Damp On Concrete Floors? Cutting in a stairway to downstairs, pounding with sledge hammer turned existing floor into rubble That type of moisture isn't always from below. Similar to penetrating damp, this damp appears away from the external walls and corners of a room as a growing damp patch. Another damp company also on the PCA website quoted for the works however this was 5K inc vat so a fair bit more. Is it illegal to market a product as if it would protect against something, while never making explicit claims? It has cracks and deep cracks. Start … Before drying your floor, clean it well to remove dirt and any built-up mildew. It only takes a minute to sign up. I need help? So try to get all the low spots and leave the true floor alone. Damp... Fixing the Damp Proof Membrane. Sign up to receive our quarterly newsletter. Your pdrain is probably clogged preventing any ground water from getting to the perimeter drain. Also i forgot to mention this is my first time ever doing this project. Why are manufacturers assumed to be responsible in case of a crash? Rising damp, penetrating damp and condensation are the three most common types of damp for residential properties. Tests have shown the cement is about 33% wet in those dark spots. How to fix this. All I want to do is resurface the floor and maybe apply a waterproofing sealer so I can use the basement for storing things and maybe have a sitting area. I know this is a lot of info and it will generate more questions, so feel free to call me if you need to. Extreme Patch absorbs vibration and shock without cracking and cures down to 32°F. It is a trowel grade product and very easy to use. Tip: The temperature of the existing concrete must remain above 50 degrees for the first 24 to 48 hours after the patch is applied. Finished product, wanted the weight strength qualities hence going with Flo-Coat. I would really appreciate it so much. I will try to give you as much information as I can, if you feel the need to call me and talk about it after, please do not hesitate. I have had issues with small springs under slabs, yes the dark spot is moisture. Check for Dampness. Cutaway of flooring, steel corrugated flooring, covered with lightweight concrete It has been painted years ago & about half the paint has worn off. Start by fixing the cause of the problem – our handy guide to dealing with plumbing problems offers advice on some of the most common. It has a 15,500 psi compression strength and withstands heavy, abusive traffic. Due to all of this work my basement floor has random concreted areas from the repairs and also has some pitting so it is dusty etc. It looks like water moving across the floor, but its just dark...no water. TIP: unsound or flaking concrete can be removed by using a hammer and chisel or with a masonry grinding disk and a portable drill. Fact#3: There is a sump pump, sitting below the floor level, functioning properly, and I can see 2 drain tile openings in the basin. ...gave me (the) strength and inspiration to. How can I determine if moisture in a basement is due to condenstation vs intrusion through walls? By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Can I use Flo-coat to re-surface this & do I have to completely remove the old paint? There has been some effervescence coming thru the pad. Symptom – isolated damp spots on a concrete floor, not touching the edges. In order to resolve damp issues, you first need to figure out why your concrete floor is damp. What are the current weather and interior conditions? Damp-proof floor coatings. Most damp-proof floor coatings are applied directly to the concrete floor surface using a brush or roller. What's the best way to level this basement floor? I have had really good luck on several of my own homes with 2 part epoxy applying in late summer. They are clearly moisture that is coming up through the floor at certain places. What I have done in some cases is to remove a c12” width of the cement from around the edges of the room right down to the earth. basement sump pump water level above drain tile. This is because damp rising up through concrete floors is a pretty … It the crack returns later down the road, we would recommend using a polyurethane caulk on it at that point. While the surface is damp you can use the Top N bond concrete Patcher to repair the low spots. If your property is suffering from rising damp which then rises through to … How can you come out dry from the Sea of Knowledge? How can I add a few specific mesh (altitude-like level) curves to a plot? Electric power and wired ethernet to desk in basement not against wall, (Philippians 3:9) GREEK - Repeated Accusative Article. I’m guessing that this sheeting is the vapour barrier you talk about. Give each layer about 45 minutes to stiffen up. And, you should probably. This is probably due to small holes in the plastic membrane (Visqueen 1200 gauge is normally used) laid onto sharp hard core without a sufficient sand cover. Why did no one else, except Einstein, work on developing General Relativity between 1905-1915? Hello, and welcome to Home Improvement. Hallway concrete failure rev 2020.12.8.38142, The best answers are voted up and rise to the top, Home Improvement Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. Outside, the tiny front yard is field stone and slopes away from the house, so no water is getting down around the front foundation. In the back, the outside level matches the interior and there is no standing water there (and no dark spots at the back of the house anyway). Wet floors can also promote mold growth. Problem: Mid-Century Modern home built between 1964-1966, used lightweight concrete as floor covering. The best thing you could do is repair the area as described above and then give it 28 days to cure. Robert, the paint and the efflorescence will cause the Flo-Coat to loose its bond. Stay off of it for at least 3 days and the you should be able to park your car on it. I have an old outside covered concrete patio that needs resurfacing. You will need a moisture mitigation membrane installed on the floor, then a sand broadcast epoxy primer, and finish it off with a floor leveler. Epoxy resin repair for damp on concrete floors. Can you suggest which product to use and a quick tutoral on how to use it? How can I buy an activation key for a game to activate on Steam? Can you please help me with great advice on what i can do and what is best to use? Cheaper option: add a sump pit / sump pump for the ground water possibly add a trench with gravel from area of high moisture to sump pit. Choice Sakrete Flo-Coat Concrete Resurfacer. And again I agree that most damp proofing companies are rubbish however this is in the past and I don't think my bathroom floor is damp because what the damp proofing people did. We have dark spots that get lighter and darker but never 100% go away. This means if there is more movement in the future, it may crack again in the same area. Fortunately, patching damaged concrete is an easy task. 1 But it is an effective way to do it. This will protect it and give your concrete greater longevity and it will be easier for you to do on your own. Prior to applying a membrane, liquid or otherwise, always search for holes and cracks in the concrete floor, as well as gaps where the floor meets the wall. If we cannot complete all tasks in a sprint, Prime numbers that are also a prime number when reversed. It’s mostly likely to occur on a ceiling or beneath a radiator or sink. Where is the energy coming from to light my Christmas tree lights? Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. I believe a damp-proof sheet was used under the concrete floor as indicated by the telltale black sheeting used before the concrete floor was poured. If need be, you can add another layer of this product after 45 minutes. I want to improve my concrete basement floor, but not too much. Each needs to be treated in different ways, and damp repair costs can vary dramatically, so it's important to know what type of damp is affecting your home before you try to get it fixed.. What type of subflooring should I use for a basement? Then you can apply the next layer. I used that for fixing cracks and at the end off my results it was powdery and easy to come off. This is not a shortcut so don't feel like you are cheating yourself. They are random, but always in the same general area. The most common is old fashioned condensation, otherwise known as sweating. 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