How to Waterproof Basement Walls With Flex Seal Products
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- Опубліковано 6 жов 2021
- This video is sponsored by Flex Seal.
In this video I show you how to waterproof your basement walls with "Flex Seal Liquid" and "Flex Shot".
#FlexSealAmbassador #flexseal
See how this has held up 3 years later -
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Videos produced by The Fixer are provided for informational purposes only. All material provided within this video is for informational, educational, & entertainment purposes only. Some of these projects, materials, and techniques may not be appropriate for all ages or skill levels. Please use all safety precautions while following any instructions or concepts provided by this video. Viewers must be aware that by doing projects on their homes they are doing it at their own risk and The Fixer cannot be held liable if they cause any damage to their homes. It is the sole responsibility of the viewer to educate themselves on their local codes and regulations before undertaking any sort of project. Always have safety in mind and have fun! - Навчання та стиль
See how this has held up almost 3 years later! ua-cam.com/video/jaafNnpDIMs/v-deo.html
It was clear that the wall is deteriorating on the inside due to someone trying to seal the wall previously. Paint trapped moisture in the cement, eventually degrading it and leaching the lime out, weakening the cement. By sealing it in again with Flex Seal, you'll accelerate the deterioration. You need to keep water from penetrating on the outside of the wall, all the way to the footing, and drain it away from the foundation. You may also need a sump pump if water remains under the slab. Flex will hide the problem.
Except he said he sealed from the outside already, pay attention before making an ass of yourself.
I just learned about this the other day, you are spot on. You can't paint your problems away.
Yes but in some instances you cant just dig a 10 foot hole around your whole house. Like if you have boulders for a foundation with concrete over it. My house has granite boulders that extend 5 feet away from my house.
@@britneyystaples91 There are always options--exterior drains, regrading the slope away from the foundation, sump pumps. etc. "Painting" the interior wall is the worst possible approach.
If you watch the video that's the first thing he says is to fix the outside first 🤷♂️
Glad you mentioned addressing the outside first. If you just seal the inside you will build up hydrostatic pressure and possibly crack your concrete foundation. Best thing you can do is regrade your property so that it slopes away from the house for at least 3 ft.
The only moisture I get is condensation in the summer. Our foundation is sealed and then has 2 layers of 2” blueboard. Our soil is like a gravel pit. I like the idea of a surface like flex seal.
Most insurance policies do NOT cover hydrostatic pressure unless added as an endorsement
Even when you regrade water sips into ground, expands and still reaches your basement. I have done it and now I'm digging a moat
Hey thanks for the tip..we have a major water problem in our basement because of the way our property slopes..
You have to dig around the entire perimeter of your house down to the footings about 16 inches from the wall out. Clean the entire wall and coat it with tar or silicone is even better if you have a clean surface than use a fiber mesh membrane then another thin coat of either tar or silicone. Then you should use half inch rigid insulation all the way around and if you want to do an amazing job seal the seams of the 4 x 8 insulation. Your basement will never leak a drop. Sealing from the inside is nearly useless. I would never ever finish my basement if the exterior walls were not perfectly sealed.
I was always skeptical about Flex Seal when watching their ads on TV. But after watching this video, I have a favorable opinion of Flex Seal now. They just now got a new customer. 😊
Matt I have used on my basement walls 3 walls facing backyard and facing outwards a product called Thoroseal ic came in a 5 gallon bucket metal all powder and mix according to directions and add about 2 ounces of a liquid product called
Thoro T1668 Acryl 60 Cement bonding agent.
The covering has lasted 25 years no water.
We’ll it’s time do do it again. It’s started to peel. So I will scrape what is bubbled and then clean it up and apply with A cement brush the thickness of pancakes mixture.
The best Houli
Too many negative comment and opinions. As a contractor i have used this product time and time again and it is a fabulous product. This guy prep the wall properly and applied this product the way it is suppose to be done. What i would like to add is. If your basement has a extreme moisture problem this is not the product for you. If you have minimal moisture issue this is going to work perfectly. He is absolutely right. Two coats is highly Recommend. I also recommend that you run a dehumidifier in your basement at all time after a project like this. Again. If your basement doesn't have a extreme moisture issue. This gentleman remady will work for you along with the dehumidifier. Those walls will look great for years to come.
Thank you so much for this thorough video! So helpful to see the prep work you did IN ADDITION to adding the Flex Seal products!
thank you for showing me the basement wall "paint" by using Flex Seal. The white Flex Seal looks great in the basement, it just looks like you painted white (my preference) and very clean = ❤
My neighbor did this with his basement and loved it. I am planning on doing this in the spring with mine as well to stop the seeping so I can eventually finish the space.
I let my concrete just stay as is and put a humidifier and sump pump down there. Keeps it dry without compromising the safety of the concrete by locking moisture in there with the sealant. Specifically for freezing climates where the water expands
You saying you finished your basement without doing any type of sealing? If so how is it after you did it? Is it working out for you? Im trying to finish my basement and I really don’t know if just start building without sealing or just do some type of sealing.
Thanks in advance
Exactly > never seal a concrete wall in your basement they need to breath just like you
@@josefcalderonromero8452 You don't seal your basement you lock in moisture and the cement will degrade over time. You should install a moisture barrier to allow water to move. You need to let it breathe.
The safety of the concrete,?
Your videos are great. You thoroughly explain the correct procedures.
Could we get an update on the walls ? we are nearly in january, i would like to see how they are doing now that the winter is upon us :)
EXCELLENT VIDEO! I have this problem in my basement and you explained my problem perfectly!.
My problem now is the entire basement is drywall 🙄
I love how clean it looks with the white!
I have pondered painting our basement walls but I keep seeing conflicting videos where some say you can paint your basement walls and other people say you should never paint your walls because they are supposed to “breathe.” Love it on your walls!
Ideally just like this guy said In the begining you would dig out your outside and seal the outside wall then your concrete still breaths inside
If you don't have a moisture barrier on the external side, painting is not a great idea. My basement walls are ugly and rough, and since the house was built in 1967 the basement is not suited to finishing. I was considering painting the walls but I think it would be less trouble to put panelling up that lets the walls breathe and can be removed easily.
Looks great now, will completely ruin the wall in a few short years. DO NOT do this to your own basement. The people saying you need to let your below-grade concrete walls "breathe" are absolutely correct. If you want to paint them for cosmetic finishing reasons, there are paints made specifically for this purpose that result in a porous and breathable surface. You can paint your basement walls, just not with a water-tight sealant product!
@@RandomNumber141 I was wondering if paneling would be a good idea after using these products. I may have to do this for a house my husband just inherited. We haven't been in the basement yet to determine yet.
@@mstoi38 home inspector here. I would never cover foundation walls with anything, nor would I finish a basement UNLESS I had corrected exterior grading. I've only ever seen one situation with a single family home where you could not fix all water problems by fixing the grading and extending downspouts, adding some splash guards at the bottom of valleys and adding additional downspouts. And perhaps upsizing the gutters if they're old. Yes that's more costly than simply coding the inside of the foundation but.... pay now and no worries or pay later with mold, health etc and have to do all things anyway.
Great job, looks awesome and the space looks much bigger now that it's painted/coated in white Flex Seal. Love Flex Seal!👍👍👊
I love that you explain how to fully fix something inside and out followed by why you can't justify doing it. Pretty common sense stuff. It helps me have an insight on what I can do with my own place even if it has nothing to do with the video at hand.
Fixes can easily be justified and get out of control if you don't take a step back and asses the issues at hand and realistically fix things instead of just redoing the whole house because abc fixes leads to xyz needs doing... while you are at it of course.
I used the flex seal tape to plug a 3 inch split in my pool liner seam. lasted two years and just blew out this winter in November. still a win to me.
Wow that stuff is pretty legit!! I would have brought the flex seal down on to the floor for two reasons... 1..to seal the seam between the wall and floor and two.. to give you a sealed surface for when you install your bottom plates when framing the walls.
In my basement i used Sika self leveling concrete sealant for any gaps or cracks (especially between the wall and floor), then painted down off the exterior walls 4" to really seal the transition area off. I then used foam sill plate gasket and pressure treated 2x4s for all the bottom plates. Post more videos of framing when you get to that stage.
Where I live we have mostly brick houses. Sealing your walls like this you have a pretty good chance of the moisture raising up and getting into your wooden beams. Looks good though
Awesome video! Thanks for being so thorough and informational with the product and the project itself! This will certainly save me some money!
Great to hear! Thanks for watching!
What a great product, you turned me on to Flex Seal Shot, going to try the FS liquid on my basement, thanks for sharing Matt!!
CONGRATS!!!!! I'm so happy for you that you got a sponsor!!
Thanks Matt.
Because of your video post I used the Flex Seal Liquid MAX on my basement project as well.
Looks Great !!
I JUST bought my first bucket of Flex Seal, I will be putting this on my basement wall after prepping. It gets pretty humid here in southeast Michigan and I can't wait to see the results. Thanks!
Thanks for this. I had my backyard graded but I still have 1 corner and 2 spots that won’t behave. This will be my weekend project.
Wow! What a difference. It also looks very bright and clean. Another project done. Something you don't have to worry about in the winter or rainy days. Awesome video as always. 🥰
🎵Georgia 🎵Georgia
🎵The whole year through……..
🎵Sealer on the inside…….
🎵a bad idea….
🎵water stayin’ in the walls!………🎵………
@Thefixer was correct when he said get gutters; grade away from the house and apply sealer to the outside of the foundation…….. He should have done that, and only that!……. But he didn’t feel like doing all that back-breaking work, so he chose the LAZY MAN’S WAY OUT……..which is what most homeowners do!………. ANY SEALER ON THE INSIDE will make it look pretty and make your wife happy, but @fixer , just trapped water in the concrete, which will accelerate its degradation, but he won’t see it. Ignorance is bliss, until I bites you in the buttocks!
We have been removing old waterproofing/sealing in our garage that was applied decades ago by a previous homeowner.
We are going to apply Damtite hydraulic cement in cracks then coat with the Damtite maximum coverage waterproofer. It is supposed to let the concrete/cinder blocks breathe and it is warrantied for ten years when applied in two coats.
Great video. Looking at all the positive and negative comments and I see it’s not for a basement that has serious leaks. Looks great after coated twice. Good job on that. But the issue I have is if the new homeowner moves in and does a complete redo of the basement and needs to get this stuff off im guessing it would cause damage to the cement blocks due to force needed to remove. Scenario number two would be new homeowner tried to paint over it and it won’t stick just like he states in the video.
Great video,Fixer....very satisfying to watch! Great product too! Thanks
Looks great Fixer! Plus the added bonus of a much brighter basement!
Yes! Looks waaaaayy better than it did!
@@TheFixerHomeRepair for now take hammer to it in a couple years oh oh
I am so glad you did this video because I need to do this to my basement and this stuff looks like it works good.
Yes, I was looking at skim coating, this video changed my mind
Thanks for this video. It looks just like my basement! There is hope!
I wish I could hire you to do my basement, your work is impeccable! Great vid.
Thank you for taking the time to create this video. People don't truly understand what it takes time wise to create these videos and offer them with the same kind of quality and care that you have. Well done.
Thanks a lot for that, Michael. I really appreciate it!
my work sells this...im glad to see this video so i can encourage sales
Thank god for UA-cam and thank god for your video.
😁😁 Hope the video helps! Thanks for watching, Tylor!
It is super important to seal the outside. That is where the moisture is coming from and if you don't it will cause your waterproofing on the inside to fail due to hydrostatic pressure. The only thing I know that works for that would be an epoxy but even then you will be sealing moisture in the wall which is also bad for reinforcement.
00:04:00 the video begins highlighting this importance to fix the outside, this is an exterior grade product which when used inside will create a hydrotrap for the materials of the foundation. The solution in this case is to slope groundwork around the house away from the foundation and then decide upon a water shedding system that will direct water from the roof away from the building. Cosmetic appearances of the interior can then be addressed with interior grade materials.
@@equipt4sound Yes I saw that I was reiterating.
@@davidkoba the video is somewhat amusing as it shows the the exterior problem area dug out at which time a bag of concrete could have been chucked into the hole and performed a better fix; as an extra step the concrete mix could be removed from bag and actually mixed then poured into the hole as an even more advanced solution; instead though we have what amounts to interior remodeling. 😂
@@equipt4sound Interesting solution. I will try that on the next one lol.
Thank you for this video Matt and it really looks great. You are giving your home a whole new life. The Flex Seal is a great product but it also brings so much light to a basement. I hope the family is well sir.
Yes, it is much brighter! Thank you, I hope all is well with you too!
I have been doing some homework on painting my basement , and was not sure what to use ?. I have the old terra cotta blocks and they have an old basement smell to them . so i am planning on using Flex Seal because of your video . there are no water issues , just the smell . Thank You !
Great video. Must have been satisfying to protect and beautify the basement.
I have a similar problem in my basement. I have added a roof over my front entry and gutters and down spouts to divert the water away from the house. But I was looking for a solution for the exterior block and then the interior. I'm glad to see that you can use it both indoors and on the For the exterior I'm going to use the black and white inside. Thanks for the video, my only question is, at what temperature is it recommended for my exterior block repair? 😊
Joy to watch you working sir. This is such a n amazing product.
Thank you! This is exactly what I need. My basement is a nightmare- that’s not an exaggeration. I will try this. I am assuming it is going to be an expensive process however, worth it if it helps with my water issues. Fingers crossed.
Thank you for a very helpful video Matt!!!!!
Yes putting on with roller is great
FLEXTASTIC video, Matt! Thanks for sharing so many tips and tricks while using Flex Seal Liquid MAX. Keep Flexin' On! 😎💪🔛
Hey Matt. Great video. i did a flexseal liquid job in my basement andit went exactly as you described in this video. Really pleased with the result. The only downside is the smell. You did mention to work in a well ventilated area but i need to mention that even though i had 4 fans running and 3 windows open, it did get quite overwhelming. It smell just like oil based paint and it is intense.
Happy to hear it went well. And yes it is pretty intense, definitely need good ventilation. Thanks so much for reaching out and for all of your support! 😁😁
fantastic video and fun editing too .. you are having a blast with your channel and it shows
Great video! Would you recommend using this product in between an exterior brick wall, and a concrete pad for a hot tub? I used the self leveling product before and it seems to shrink often over time. Thank you!
Thank you, excellent work and very nice explanation how to use the product !
Anyone with a basement should watch this.
😁 👍 thanks, Roanna!
Looks great. I would totally use that on the outside.
Thank you for you time to show us
My young neighbour is having all kinds of issues with his house. He’s 27 and clearly has no clue about a house. He asked me if I could take a look and let him know what I think
Everything pointed to water. His eavestrough system is wrong. Multi downspouts in wrong spots, water pooling near foundation, cracks near all doors and windows, grade slopes wrong etc
He wanted to fix the inside first. Told him don’t bother. Need to stop the water and get it away. We came up with a simple cost effective game plan and gonna help this kid out. Told him the eaves he’ll need to hire a company as he only has 4” and also needs to change all the drain points but the rest we can fix. He’s so excited.
@@elizabeths7594 to me it is a temp fix. My suggestion to him is to divert and seal and then possibly do the flex seal but his concrete blocks inside have been painted multi times and flaking. To me the flex seal would need to be against the concrete directly but if he doesn’t do the first part, I think eventually the water will continue to push in.
I was so waiting for you to get started on the basement!!! This was awesome and it has me thinking about what to seal around the house. 😂 Great work in the walls! And thanks for giving us the real details on why you skipped doing the floor. Isn't there special paint/coating for concrete floors? I've seen this gray/blue speckled stuff being used lately. 🤔
I just did basement walls with different product. Now doing floor INSL-X Tough Shield Patio and Floor Covering. It says it can be used in basement.
Epoxy?
@The Fixer, great job! What do you recommend for the floors? Leave bare or how would you finish those?
Thanks for introduce this product
Awesome job. Thanks for the idea.
Great demonstration, thanks.
Thank you ‼️thank you for a thorough video, of course Flex Seal paid for it, but, still you’ve told a great story 🌻
Great work. Now you just need to paint the basement ceiling. I think black would look awesome!
Looks like a brand new basement! 👍
Loved this. Great job sir.
Had to deal with a similar basement. Wish I had this product then.
People need to remember that lead is in most old paint and to take proper precautions. Wear an organic mask, and collect paint chips in plastic. A can of lead paint was 90% lead!
Yes that is true. Proper PPE is important. Thanks for the comment.
@@TheFixerHomeRepair I LOVE your work! I was exhausted after watching your timelapse livingroom reno. I couldn’t stop watching. You are an inspiration.
A REALLY good video. Thank you!!!!
I can't speak to it working with the flex seal, but when I am using a cheapie brush and even a roller that I plan on tossing, but I'm not finished with the job, I wrap them in aluminum foil, creating an envelope and pinch it closed. It prevents the paint from drying and I can pick up the next day where I started, not having wasted a brush. Both will stay usable in the foil for days. I just open the foil up, do my painting and slip it back in so I'm not wasting the foil either.
Hi you did a great job at that you did really really well and it is very difficult to paint drywall for the first coating
😁👍👍
another excellent video, Flex seal is a awesome product but i was not aware they had pails of it, I have only ever seen their tape and sprays. I have two outside walls that are above ground but only about 18 inches worth. I was going to use tar but i am thinking Flex seal might be easier to work with and it seems better to clean up and i think the white looks a lot nicer. Great job, stay safe and well.
WOW !!!WHAT A DIFFERENCE. IT CAM OUT GREAT!!!!!!
This is a great video with lots of helpful info. Thanks.
I wish Flex Seal would send me a bucket of that. Looks like good stuff
Not sure if you will see this comment on an older video, but is there an update on how this held up? My basement is starting to a leak a little where the concrete floor meets the cinderblock walls. please help
Thank you this was very helpful
Thank you so much!
Dude! Love your videos. make an UPDATE video on this basement wall FLEX Coating stuff in a year or so! Then we can see how it holds up. That would be awsome!
just finished my basement block walls, looks great, but my basement stays 55 degrees, had problems with runs, every 15 min. had to brush the runs. other than that highly recommend flex seal. (fill larger cracks first) looks like new
Looked at the chemistry of Flex Seal awhile back. Amazing stuff. Should not be sold as an As Seen on TV product because it way better than some of the main brand products like Prosoco and Polywall.
If you’re using Prosoco as a negative side waterproofing, you’re probably ill-informed enough to try flex-seal for that too.
thanks
Hey Matt - thanks for this video. I am going to follow your suggestions about prepping inside and out. My question is related about securing 1" x 3" to the sealed wall to hang drywall on the wall? How should I secure the 1" x 3" to the sealed wall so that I don't put another hole in the wall for water to come through? Thanks in advance. Neil
I used clear flex seal on an outside brick wall to keep water out it works
I am no expert but I feel if you have a water in the basement problem and you seal the interior walls this way the water is just going to sit inside your wall after getting in from the exterior.
Sure, but concrete doesn’t mind being wet. At all. But you are right, you should give the water an outlet. I would add a French Drain inside the basement that drains to a sump pit with a pump. So, big thick pool liner painted on the walls (after multiple coats - check the specs to make sure the product can hold up or test in a smaller area first) and floor, perimeter French Drain draining into a sump pit with an airtight lid that’s sealed to the floor. Inboard of that by an inch or so, an insulated stud wall. No poly in the wall, no vinyl wallpaper. Insulate the floor with rigid foam and then sleepers and whatever floor covering you want. Done.
The efflorescence comes from the concrete sucking groundwater in and as it dries inward to the basement, it leaves behind the salts from the ground. That is what blows apart the concrete. If you only wanted to fix the concrete, and not do the pool liner and insulation, use a lime-based stucco and coat the walls. When the stucco falls off in 20-100 years (depending on the skill of the stucco mixer and applicator), you add more stucco.
I agree with your assessment.
Thanks 😊 l will dig out and putting it in there 💪
How long before it pulls away from the wall. Any surface seal is only as good as the base surface. Rubber wont stick to a surface if any moisture is present. kind of like painting over rust on metal.
I used a different rubber product 15 years ago. It worked great and and looked great in the beginning. After 10 years the cement wall started to pit an blow chips off the sealed rubber wall. The rubber started to split and Peele. The cement needs to breathe. I have spent the last three years grinding the rubber seal off the cement walls. Patching as he did with hydraulic cement and two coats of DryLock will work better. DryLock lets the cement breathe.
Nice video, thank you!
Thanks for your information 🔧 and 👍 video I appreciate you
Our basement in our last house looked like yours. We used dryloc. It took forever to prep, make repairs, and apply the product. It was 1100 square feet. I feel your pain with this project.
The prep work is the killer. I will be starting the ext. and interior when the weather breaks. Ugh. Also using Drylock.
@@doloresm7396 good luck!
Thanks good info
Thank you so much for the video. I think I may do this in my basement also. My house is 112 y/o and my cellar walls have started crumbling near the floor. My house is now surrounded by concrete on the outside so I'm hoping this will work but it will be a lot of clean up prior to doing it. How many buckets did you wind up using for your two walls there?
Thanks
Thanks for the video, great info. Do you know if you can spray on Flex Seal, with either an HVLP or Airless sprayer?
Great video! thank you.
very good.
Thank you.
Wow. That The basement look Good
How many buckets did you used to cover all basement? And do you have plans to finish your basement? Thanks for all your videos
Love to see what happens after a few years.
I used this 10 years ago on the cabinet wood under the kitchen sink. In case there are any small leaks it would prevent warping the cabinet wood. It has worked well, but the fumes were intense, took two days for the house to air out. They may have improved it since then, did the Flex Seal you used have any Fumes?
Ok I'm doing this..ty so much..I'll do outside first.. Then inside using the flex seal on walls..my floors im not sure on ..
This came out so good!
Great video!!! Thanks for sharing!!!!
Thankyou