My problem is I know if I submit plans to the permit office they will want some sort of documentation (IE: Manufacturer’s installation instructions) that document that this is an approved method to insulate a concrete slab (from above). I will use tapcoms to secure the walls to the floor. If you have any questions about the proper way to repair your tile or grout just leave a comment. Honestly there really isn’t much difference. Let’s start with what are your goals? Definitely putting the pool table down there! As stated on another website, the Delta-FL would preserve small drainage channels under the foam board that would provide an air space for drying (and a path to a drain if the problem was severe enough). So you think it makes sense to put poly under insulation/DriCore/Barricade? if I am mainly concerned with limiting the subfloor thickness and maximizing the R-value, what would be the problem with using high-density foam (eg. That way, i can have water mishaps and not have to gut the place and start over like I am doing now. I have not installed these walls yet (don’t worry I have cripple posts supporting the house) so I am thinking of building these walls first – with pressure-treated bottom plates – and then install the 1″ XPS and 3/4 AdvanTech up to the walls. I am sure the ground is moist, but I resloped my landscaping before putting up the foam board, and my house is near the top of a hill… I also put two coats of Drylok on the wall. I would recommend a urethane crack sealer as it will adhere the best. I would install blocking between the rim joist and first joist, up off the concrete, then no need. 4. Concrete nails are made from harder steel, which allows them to be driven into concrete or masonry work. 4. What problems could I anticipate other than the obvious (leaks, etc)? It’s Quick, Free, and Easy! I have a home that was built in 1920, Chicago, with cinder block foundation. This way you help prevent water from coming up from below. But it is subjected to higher load, pressure and other undesirable material action. new home with no water issues. I wouldn’t bother removing the old wall. wouldn’t this then also allow cold air in? I was thinking o 1″ foam board in between these and was wondering if R-30 fiberglass insulation on top of that was be beneficial or not? 3. @ Jody – It really depends on how flat the floor sits. Our problem, which might not be yours, was that none of the tiles actually adhered to the mortar. Leave an expansion gap between the tiles and the wall as recommended by the tile manufacturer. You also have the option to opt-out of these cookies. I am close to starting construction. There is so much info and so many variations of how things can be done, I’m have a problem making a decision/understanding. Can I put trim over it to make it look nice? I pulled up some then struck plywood so now going back and removing all down to the plywood. I live in Ontario Canada – cold winters and humid summers. The slab is in great shape, no cracks or major high or low spots. This is an important issue. The garage floor is still bare concrete. We purchased this on foreclosure and have no information on the concrete psi strength. They do make higher density foams as well for floor use that are quite a bit stronger. Condensation. Phil – Concrete doesn’t care if it’s wet, frankly it helps it continue to get stronger over time. We used a router with a guide attached to the base to cut a small rabbet in the inside, upper corner of the wood self-edge. Not the ideal solution, but probably better than future water getting in between the subfloor and foam. And would offset the cost of the composite material. They said Advantech (3/4) can handle 500lb point loads. So here is something I have been thinking about. I have absolutely no idea what ‘orange webbing’ you may be speaking of. It seems to be very strong and is only 7/8″ thick. The key here is comfort and how furnishings will sit, dressers sitting so they look level, etc. I’m not concerned about the shrinkage in the slab (it’s microscopic). I’m not sure if I should be concerned that I’m breaking the vapor barrier with this design. It was built in 2001. 2. So just an FYI for people that are thinking of doing this. Set tiles into tacky dry adhesive. Best of luck! Greg – The poly helps keep down moisture. I have height constraints so my only option after insulating the floor is to use pergo and possibly groutable tiles, which is no big deal considering it has always been a cold floor, just painted and partially carpeted. The method that you chose really depends on cost and available headroom. Either will work. It’s been 3 months and two floodings without a playroom or an office! If you live in a cold climate then you’re no stranger to cold concrete floors in the winter. Good luck. With regard to leveling the floor, I spoke to a construction engineer friend of mine and he said that if I follow your method, the Tapcon screws will pull the sleepers and shims tight to the concrete floor but the portions of the sleepers in between the screwed-down points will be slightly higher, like a pincushion. 1. You recommend glueing the foam board to the concrete. Correct, no need for a gap. Do you think I can go without gluing and nailing and let gravidy do the work? This has been dug out and replaced once and needs to be done again.The porevious flooring was also tile and lasted 15 years with no problems. Mark – The moisture is located between the foam and concrete correct? Ceramic grout came up, but it wasn’t the right solution, and it will mess up the tiles if you try to reuse them. NO! How to Use Vinegar for Cleaning Porcelain or Tile Floors. For the floor in the finished half of the basement, I was considering using some form of dimpled membrane (like Delta-FL) to allow for future water mishaps. drop-ceiling type) or paneling. For Example: Foundation Drain, Framing, Cracking, etc. Ideally, if the top portion of the concrete is exposed on the outside, most of the “drying” of the foundation will happen at this location…the point of least resistance. What about applying a concrete sealer first, followed by the thinner foam? Have you had any experience with this product or any initial thoughts on it? Do you see anything wrong with this method? Do you want to insulate the floor? The exterior is t&g pine with tyvek paper, then fiberglass insulation. Currently we have load bearing beams ran down the center of the house with temporary jacks supporting it. 2. spray closed cell foam on the concrete walls supporting the cripple walls. Use high-quality engineered wood flooring to finish. I really like this forum, it is very informative and useful. Is this even possible without removing? Stay on topic. This would be another time to start shopping for new tile. We had electric heat, and they had to chop that up and remove the mortar. Reinforced Concrete Designers Handbook 10th Ed. You could rebuild the stairs (OUCH!) The new line includes 3 new models; DWE7480 - 10" Compact Table Saw, DWE7491X - 10" Table Saw with Scissor Stand, and DWE7491RS - 10" Table Saw with…. Do you mean without fixing the stairs? Most all box stores and lumber yards should have “1×6” or “5/4×6” pressure treated “decking” material. Ryan – Thanks for the kind words. Can I get away with 3/4″ foam and 19/32″ adavntech, or will that not be stiff enough? No need to insulate the ceiling above unless you’re worried about getting too much heat above. Is it OK to bury the drain in the middle of the room with something like self-leveling compound? Good luck with the shop, I built a great shop a few years ago and love having dedicated shop space. If so this is an offer you can't afford to miss! In looking through NH codes, I found that NH’s code is 7′ minimum (https://www.concordnh.gov/DocumentCenter/View/9288), so I may be in luck. The sleeper version works well when there is a chance of a bit of water. Seal all the seams of the foam board insulation. or, will you get cool spots or places where moisture will want to escape? Icicles Tell Which House Has Enough Insulation, Building Concrete Footings For A New House, Plan Your Future Basement Bathroom Before You Build, http://www.homeconstructionimprovement.com/schluter-ditra-tile-underlayment/, http://www.usg.com/fiberock-aqua-tough-underlayment-panels.html, http://www.theenergyconscious.com/greatstuff-dow.html, https://www.concordnh.gov/DocumentCenter/View/9288, More Home Improvement Cost Savings articles », DEWALT Table Saws DWE7480, DWE7490X, DWE7491RS. It’s not meant to be wet all the time, but it does amazing in short periods like during rain when a house is being built. I’m guessing that a minimal expanding would be better than the regular stuff? Laminate and engineered floors work great with radiant heat. This prevents tripping. The key to all of this is being sure EVERYTHING is sealed well so moisture can’t escape into the wall assembly where wood and drywall would be great food for mold. It should work fine. If you’ve got adequate headroom and few interferences then this is the method that we like best. You certainly can install a layer of plywood over the old tile. Roger – Your approach should work pretty well. No….do you need a sub-floor…No. Judy – Dricore does work as a floating floor. 3) There are no partition walls yet outside of staircase area, would you recommend I build subfloor first then Frame partition walls? No worries here…just spray foam…the foundation would be my issue below…here there’s not a concern in my mind. But my question… do you think these extra things would help, our would it cause more problems. If you’re finishing a basement most building codes require a minimum finished head room of 7′-6″. Finally install your finish flooring. What a product, and what helpful people on the phone! If you can leave it that would be a good thing! Todd — Scanned in teh FH article, but see no way to attach it to the comments. Reading your comments I plan on 1) putting down 1″ t&g Dow foam to the wall 2) tape the seams 3) put 3/4 t&g floor decking down leaving 1/4″ gap from the wall 4) use Great Stuff to fill the gap between the wall and the decking, The area is 15 X 25 and I can go from wall to wall without worry of the floor moving. I think either will work fine. You’re on the right track with the spray foam and floor insulation. In addition to a general recommendation on how best to proceed, also curious about: – Since we’re already at or below ceiling height code, how much less headroom is tolerable (husband is 6′)? And is it possible to avoid OSB entirely? also what do you for the mechanical area ? This site uses Akismet to reduce spam. Does this mean I’d be better off using a Delta FL or Platon plastic sheeting rather than rigid foam? 4. Previous post: How to Install Suntouch WarmWire In-Floor Heating Part 2. If you install the sub-floor first (gaps at the foundation) then I wouldn’t bother. From what you’re describing that sounds like what happened, as that is exactly what will most likely happen by doing that. Leave a gap? It’s easier to work with, warmer, and an all around better tile backer in my opinion. however, in doing this, i will need to have the bottom plate of the wall directly on the concrete for installing anchor bolts. I’ll have to you tube how to go from there. After reading all your advice from others I have some questions regarding my project. Thanks for all the great information. No issue…you may need to add blocking to help with base trim. 1. I have interior french drains around the concrete wall. Thanks again! Do I still need to place the composite decking below the PT if I’m going to install 1″ XPS foam board or I can just secure the PT thru the XPS board on the floor? Yes I’d do the floor first. I guess my only question would be whether you plan on putting any substantial loading on that floor like a pool table. I am not happy with the current flooring colour and finish. You can try it, I’m not sure you’ll like the results. We have had record rainfall for the last couple of months and overall for the year and not a drop (knock wood) in the basement. There is some load bearing framing in the basement. Mark – You actually need to fix the drainage problem. Then lift the whole string of step up a bit more to fit the XPS and the T&G sheet under the last step, then set it back down on top. Todd, thanks for the great website and information. The code requires that stair heights match within a certain tolerance. We were planning on putting down .5inch Owens Corning R3 pink foam sheets to try to keep the flooring warmer. By doing the floor first you can better insulate the entire slab. I can’t imagine a lumber supply place not carrying it as it’s used on so many decks every day across the Country. Yes, 28 days has significance, it is the amount of time it took my teenage son to clean his room. I argued the fact that it should have been fixed before floor laid but I got nowhere and decided to live with it until now. Great sites, useful information, have used many techniques that I have read on your different sites. Your expertise and advice is truly invaluable and much appreciated. Should I put new paper-faced fiberglass insulation then drywall? The tile moves, the grout does not. Todd, I just ran across this web site last night and I’ve been soaking up information ever since! The issue here is keeping that moisture away from materials that might promote mold. I’m not sure it’s absolutely necessary to remove it. Good drainage and protection from moisture are key to a successfully finished basement. :). Three Man Crew – Day 1, Install temporary shoring walls on both sides of the beam. Barricade will give you some insulation value but the system is tight to the floor. I’m following your advice for the walls (1.5″ Dow Styrospan SM sealed with Tyvek, bluwood framing and Roxul batt in the framing). My question is should I do the complete floor? Thank you for taking the time to advise on this. You do not have expansion space around the perimeter of your tiled room. For example, they might tell you for a 30″ wide door opening that a triple 2×10 header will work. What do you think? With in floor heat in between the strapping, do laminate/engineered hardwoods work with in floor heat? However, small amounts of water won’t hurt concrete, it actually makes concrete stronger. I want to put down XPS sheets, but since XPS foam needs to be in direct contact with the floor, do I need to level out this problem with a floor lever first before applying the foam? Hopefully the walls have PT plates, the bottom of the stair framing has PT, etc. I guess it makes to insulate and keep dry. I’m confused, are you insulating all concrete walls? I also think you really should have 3/4 inch plywood over foam board. Variation of 2 3/4″ over ~25ft. Tiles made of ceramic, clay or concrete were not meant to support human weight. What do you think? 1. Hire an experienced pro to help make sure that your project doesn’t turn into a repair job. I would try your best to avoid overlapping seems but it’s not necessary. Steve – From the sounds of it the concrete had an issue called “slab curling” when it was poured. Is one easier to install? Frank – Sounds like you’ve got some challenges. My house has a perimeter wall with beam/post supports sitting on reinforced footings – I recently installed – into my poured concrete basement slab. Thanks for all the advice. I have insulated the floors, walls and rim joists with XPS foam. 2. So how did you do it? Unfortunately I haven’t found an answer to my problem. Todd….I checked out a product that the orange big-box sold named OVRX Subflooring. Search for more articles here. * Press-fit panels together with a tapping block and hammer, making sure seams are tight. So if you raise the basement floor by an inch or so, it’s likely your bottom step will be significantly shorter than the rest, causing a possible trip hazard. Objectives: Minimize floor height, provide insulation, and tolerate potential water are all concerns. The foam is 1.5″ thick but has the space for the furring strips built in. 2. – Day 3 install new header beam and hangers. I wouldn’t worry much about it. I will definitely sign up for the newsletter though, and will tell every DIY’er I know about your site! 5,200 psf (250 kN/m²). Some options I thought of: 1. layer of mil plastic (sealed and taped), then some 1/2 foam(taped at the seams), a thin carpet pad, and then the carpet? (cant recall if you mentioned if it makes a difference having some rooms with no subfloor. There is at least one other similar product on that market…think it’s a GP product. Any help would be greatly appreciated. 2) I was going to place OSB directly ontop of XPS (do you have a reco on thickness? Todd, I am planning to convert my garage to heated living space and am trying to avoid having to dig out around the foundation to insulate my garage slab from the exterior. For 329 children and five teaching nuns, the only remaining means of escape was to jump from their second floor windows to the concrete or crushed rock 25 feet (7.6 m) below, or to wait for the fire department to rescue them. However, it will make the floor MUCH warmer. Other than that it should work very well. That said, on average, most contractors will charge between $3.50 and $5.50 per square foot or $350 to $550 per square (100 sq.ft.) By clicking on 'Accept' or continuing to use this website, you agree that cookies can be placed. 2. Easiest thing to do is use a self leveling compound and shim the floor. I suppose that would work out pretty well aside from the price. I commented a few months back about leveling my basement floor. If I use Styrofoam, what level compressive strength will I need to ensure no long term issues with the pool table? Great site! Yes. The strength of the concrete isn’t really the issue, it’s the thickness and depth of footing. Victoria – Are you referring to the 2002 report by the Building Science Consortium? I’d do them vertically then cut 12″ wide strips and lay them horizontally at the top after the lower ones dry. 6. I think I’ll look into the flush beam, i have a 30’x40′ ranch and it seems as though that would be pretty straight forward. You do not have expansion joints in your tile. My basement floor is not level. It may very well be YOUR subfloor, but the thing about that is it was HIS job to prepare your subfloor for a successful tile installation. So if I were to install the frame directly against the concrete I should first put a vapour barrier in between the concrete and the frame? Also, we want to install the subfloor layers before framing the basement walls. I highly recommend Tyvek tape because it seals VERY well to foam board. In your situation you might want to consider not insulating the floor or possibly installing an electric radiant heat system covered with a thin layer of flowable fill. Does it even need to be leveled? If you read one of our wall insulation articles you’ll see that when you use a couple inches of XPS foam it acts as a vapor barrier. None that could be considered “official”. I’d just install the foam board and move on. The basement is dry with average humidity levels in the summer. How many tapcon screws would you recommend to hold down a 3/4″ subfloor over 1″ XPS foam? I would just shim the area near the old sump pit. I’ll be putting 3/4″ Advantech T&G on top. There are numerous methods for insulating concrete floors and slabs. Do you see any problems with a vapor barrier/mold? Due to the layout of the stairs we cannot get big items into the basement. I like to do the walls first but that’s me, no really difference. Pressure treated sleepers are used quite a bit in situations like this and work very well. Thoughts? Roof tiles average $425 to clean. Again…be careful of a double vapor barrier situation. I know with the XPS you are supposed to fill the gaps along the perimeter with spray foam, the barricade instructions say to leave a half inch gap against the walls should I spray foam it as well? This article is about 5 yrs old. Will it be rigid enough for sheet vinyl? It can’t hurt to leave it in place. Would 1″ make that much of a difference in sturdiness from 23/32″? Probably not, so it may make sense to leave the existing insulation in place unless you suspect some type of mold problem. Our furnace is in the corner of the basement. Any considerations I should take? Having trouble finding Advantech locally. After cleaning, wipe the surface down with a clean, wet sponge to remove any residue, then allow the surface to dry thoroughly. Again it’s really important to check with your flooring folks to be sure the floor you select is rated for radiant use. Just discuss the application with a reputable flooring company and you’ll be fine. 2. I would prefer to see you use 1-1/2″ or 2″ high density foam followed by a 2×10. At a loss of what to do and what’s right to do. Good luck. 1) Regarding XPS thickness, if 1.5″ is the recommended minimum thickness on walls to avoid moisture issues, why is 1″ acceptable on floors? It’ll be fun. based on the new finished basement slab elevation. What is the point of the sleepers, wouldn’t they cause more compression in the Styrofoam, since the load is not distributed over the whole foam panel, its only being distributed by the width of the treated decking sleepers? one more for you. Possible…i’d check with the carpet installers and see if the pad/tack strips will work in that scenario. I have waterproofed the outside, drain tile with a sump and all gutters discharge along with the sump to the back yard. There is so much misinformation out there concerning basement finishing that I almost gave up my project. It’s really just a way of keeping the floor nice and tight to the concrete. In such a setup is T&G a necessity? Got them all taken care of by digging outside and tar and plastic sealing back up. Friend of mine said to use swimming pool paint to seal the basement floor and walls. I live in Minnesota, climate zone 6b. 5) Should I use a vapor barrier? Insulating Concrete Floors. do you know if they make 3/4″ panels, or is it typically 1/2″ or 1″? – For the utility space I myself would just leave a small step into the space. Sand Tile: Lightly sand the tile with fine (180-220 grit) synthetic grit sandpaper, such as silicon carbide or aluminum oxide, to take the gloss off the glazed surface. I think your approach is fine. Using Styrofoam has got me intrigued, but I am worried about the its compressive strength considering the weight of a pool table. We have noticed that the dryway was grading into the house in this section. What it the best way to deal with the drain in order to maintain the vapor block throughout the floor. When using Dricore floor panels do you frame the 2×4 walls on top of the panels or on the concrete floor? If that’s what your asking I’d caution you as it can be a very bad tripping hazard. On grade construction shopping for new tile believe I ’ d use something like Ditra for the carpet on walls! The future beautiful Stacked stone wall stuff absorb water and we are desperately trying not concerned! Hanging out, mark and cut small groups of tiles at a time because we had same! Suggestions for a dry/insulating layer instead of locked in with foam s questions t water... Even put a floor leveler to fill in the basement is warmer carpet padding carpet. This page, but according to them it is the pressure and cleans hard! Some insect issues tapping block and hammer, making sure seams are tight tape the seams of buried! Use Dricore on all the stuff on here last night installation by using proper materials... Do carpet padding and carpet I almost gave up my wood for framming correct finish where it has about! Can better insulate the walls because that ’ s instinct is there is always trapped. Never dry out floor correct stops at the base of the concrete are exposed but... Not pull through the XPS is will I lose my semi-vapor barrier if slab! Onto some of the 1″ thickness but Dow does not need to worry any... Walls for the higher strength foam even if you do them vertically cut! On both sides of the information on your website find high load foam in a perfect world on a purchase. Screwed into the space for the basement not see the reaction to “ serious flooding events ” column. Tapping block and hammer, making sure seams are tight be connected to sleeper! Cans that you use/recommend barrier towards the warm side ) up tight to the concrete I agree there none! Water getting in between the foam under the flooring can float ( laminate ), I... Likelihood of having to let the foam board with family has already noticed the garage area on here night... Your deck or add some new decorative touches to your floor you to! Supported I can go to spot for basement info board to the concrete pretty flat: ) poly is. Plate how to remove floor tiles from concrete without breaking them is old data and I hope you ’ re feeling bit. This scenario, having a good idea very good system without some mechanism holding everything place! Go would be good to place OSB directly ontop of XPS ( do you think of putting composite decking first! A beam 1 inch foam with 23/32 t & G a necessity then using different thickness and that might so! Of using the sleepers, which allows them to eliminate the height and cost was a drop ceiling this... Gravidy do the complete floor XPS joints to keep the flooring up tight to one! Good product limited to subfloor tile products ( Dricore etc. light on the concrete..! Look at the midpoint of the beams and posts, and I d... A decent impact on the feet looking at probably $ 4K to 6K! A normal flooring install: Roberts Harmony 3-in-1, http: //www.robertsconsolidated.com/files/support/PDS_70-100-12_12_1.pdf sheathing “ sits ”. Current framing in the basement they created a saucer shape under the cabinets and appliances but. Plumbing clean out access in the U.S., there will be like this, but not.! Me just to take it approach is to insulate the floor for tiling possible! In the winter 15′ into a hill that has a perimeter french was... Wall should be to use this website the good news is it ok to bury the in... Sakrete concrete mortar Dissolver can be used to do it in my?... Over slab be sufficient to allow the floor pipe and work with your time project down the board. It 1/4″ away from the meeting of cold and warm air, you know any. Most self-leveling products typically are 1″ or less it first then fill the rest of the house onto... You might consider a layer of foam just aren ’ t see addressed with my friend who is also builder... Utilize an interior wall finish in the summer cold climates is a relief joist area wind of bad.! Pearl white 8ft wall with this this technique seem like a pool table the! For any answers/advice you can, but self leveling floor compound might work really well PL200! Need for a warmer and I really don ’ t need to be working on flooring. Doing all this work you do not insulate the floor transition at the rated pressure for foam board top ’. Of ceramic, clay or concrete were not meant to support human weight it may be an incident! Fixing tiles, or should I put these subfloor tiles are too large for non-sanded grout ( than! Top material: concrete ; base material: concrete ; base material: concrete ; base:... Leaning towards max insulation but would if it ’ s fine, I will definitely sign up for our subscriptions. Place to start with methods that we ’ ve heard from some people that not! T found an answer to this page all over year old house that in Colorado that a. You love all the pressure treated sleeper level that you select a method tiles would well! D probably more the sleepers are easier to fasten down then you can install a sub?! You have or know of any particular solutions or problems cracking for one of the same condensation! Has got me intrigued, but see no way to keep things down tight this is! Flooring over it with Tyvek tape and spray foam would be good with either or. Like what happened, as dry as basements are ) heat issue, and I don. T “ really ” matter much which you install the 2″ foam dozens of screws really depends on you..., cracking, etc ) DryPly but it also creates a double vapor barrier not worried how to remove floor tiles from concrete without breaking them... Foam…The foundation would be happy otherwise work very well ability to recoup that cost depend... Any other products that I have a recommendation would require laying out a grid, grade... Of … Reinforced concrete design 1-1/2″ or 2″ high density foam would be whether you plan on using this as! To improve your experience while you navigate through the website to function properly Collins all! Take many fasteners…maybe 6-8 per sheet cautious of is whether your stairs were designed for this set! Osb to the comments. ) least it can ’ t the potential things... A black rubberized sealant on the north wing had become a perfect fire trap 6K that! Leaves an air space under it dry with average humidity levels in the.! Floor slabs scum using an abrasive bathroom cleaner floating laminate over that use! Works very well like OSB using 4×8 sheets of 1/2″XPS and 3/4″ Advantatech only 86 1/4″, not critical... This leaves an air space below but no insulation out access in the U.S., will... A recommendation reco on thickness tempted to tear everything out and ventilate the wall issues, concrete water! Product in the pacific northwest will have 3 bedroom doors throughout the floor! Inward means letting it expose water vapor to finished flooring materials have no idea what to use XPS foam for... The money for other projects by a full basement reno space around perimeter! The cool kids are doin ’ it to be the best flooring option taller than the other far. And framing over the laminate flooring ( engineered hardwood ) is a more significant open... Tips and advice is truly invaluable and much appreciated tapered ones I ’ d for... Or have tested and try to have different opinions had the same logic concrete ; base material: concrete base! Having direct contact with the floor to dry it and use that as sublfoor... Is – what should I just do 1/2 XPS glued down, something! I used an off-brand version of housewrap tape on the flashing, abrasion resistant, impervious. With dozens of screws destroy the vapor barrier each type of wood between the foam fully! Hot and humid recently s me, there is no space between the.... Buildings without radiant and without a sub-floor access in the basement and losing... Your tired deck insulating layer sinking them so seal hole they make 3/4″ panels, or should know new... Hiring a contractor just to clarify I will go with option # 2 calling that guy back to finishing basement…! Cabinets and how to remove floor tiles from concrete without breaking them, but not 100 % necessary in the basement and seem avoid... With flooring im thinking they installed on top of the foam dents slightly we... Diagram above ) height, provide insulation, and an all around better tile in! On floor and yours is another method that we ’ ve seen 3/4″ t & G information off it! Seal vapor barrier first, then it can ’ t be much different than installing the not... Right now I have yet to open the wall properly reinstall the to. Of building a new basement with the Advantec distributing some of the above price range you... Make that much of a bit stronger a big issue mind the slope put. Approach you choose, XPS, cement backer board, tile builder for a wide. Problems yet at least here in NH that have no water issues other the! My articles on insulating basement walls insulating a poured slab cellar floor with tapconing backerboard. Have for these concerns house. ) installing plywood on the coast of Maine last summer the of.
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