We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. There are different types of waterproofing materials or concrete sealers available in the market. Otherwise, a lot of waterproofing agents require annual reapplication. Also, the company offers a 10-year warranty and Drylok will last longer than RadonSeal. For the sake of your family, always try to reduce radon to a minimum. Or you can use a disc or drum floor sander with very rough sandpaper (16 or 20 grit). If not, wipe off the sealer and rinse the area (or it would protect it against acid etching), and proceed to open up the surface. What if I already have a radon fan system? ft., limestone: 175-225 sq. Best to recruit a relative or hire a handyman. ft. per gallon. DRYLOK is the only waterproofer in the industry with a fully transferrable warranty. Sealing and Waterproofing Walls and Surfaces. Nos valeurs nous rassemblent the iceman cometh hickey monologue . Compared with Drylok, RadonSeal is pretty expensive. It can lead to a damp concrete surface. Stir the Drylok properly before and during the application without adding a thinning agent. Repair permanently hairline or wide cracks in poured concrete walls with our Foundation Crack Repair Kits. The proper approach is to seal the entire wall or floor. Its very effective, simple to use, and rather affordable. Drylok extreme, Drylok Wetlook, Drylok original masonry waterproofer are some other options. The Radonseal should be a permanent seal, and the walls look much better after being painted white with the drylock. RadonSeal restricts moisture, water vapor, and radon gas infiltration through concrete. Never let the children play or have access to it. It is not a crystalline systemit's more paint-likealthough the manufacturer states that it does penetrate the concrete. Drylok has a fairly wide range of waterproofing products, available in different colors and with different tints. Recently in the past 2 weeks, we relandscaped the front of our house making no changes to the land besides planting some new flowers and putting down more mulch. PENETRATES - Does not leave a coating. I am just trying to make sure the basement remains dry. Always observe safety precautions when handling such products. An ideal reading would be 7 (neutral). Very hard-troweled surfaces have to be opened up first either by acid-etching (like our organic EasyEtch) or mechanically with a shot-blaster or floor grinder. Premium Exterior Clear SealerHigh solids acrylic based sealer Penetrating Sealer 101 - V-Seal1 Gallon - $39.95. I'm also planning on using Epoxy-coat for the floor. However, you can use it on bare masonry, such as terra cotta, stucco, concrete, and cement. Dispose of the equipment and disposable tools and clean the area with soap and water. This product is designed to prevent water from seeping through the foundation and walls in the basement. Also, check twice to find out if there are any spots left behind when applying. RadonSeal and Drylok are both penetrating concrete sealers. You can learn more about sealing concrete from these posts: Should You Seal Your Basement Wall? If the drop just sits there for over 10 minutes or spreads out to leave a large damp spot the size of a quarter, the surface is not porous enough. This has been going on for a week, vacuuming water 3 times a day. ? Radonseal, on the other hand, has been a leading penetrating concrete sealer for the preservation and protection of concrete blocks, basements, commercial, and residential concrete since its inception in the late 1990s. Note that the reason you need to seal your basement foundations is that the foundation is porous. shot-blaster for cleaning concrete floors. Alex fyii 16 years ago Sani-Tred isn't as expensive as you make it sound. [And How To]. You don't need to mix anything with it or dilute it with water. You need to go to wiki.ezvid.com to see the most. 2.5-gallon RadonSeal Deep-Penetrating Concrete Sealer will cost you $119, and a 5-gallon costs $281, which is almost $116 higher than Drylok. It prevents water absorption and protects the concrete from excess moisture which increases the lifetime of the concrete. Resists 4 PSI, greater than a wall of water 9 feet high! Neutralize acid residue by spraying a mixed solution of one pound baking soda to five gallons water. You have to use a pump-up sprayer for applying this sealer. This will likely keep the basement dry but may create pockets with increased pressure inside the wall which may lead to cracks and similar defects. You might be wondering which one to choose. Drylok is a kind of acrylic, latex, or oil-based product. By doing this, RadonSeal permanently strengthens the concrete and makes it resistant to cracking, dusting, freeze-thaw, and other defects. After the final application, rinse treated surfaces and scrub them well with a bristle broom within 30 minutes. With a pump-up sprayer, spray on an even coat sealer on the wall or floor. The main difference between water-based stains and acid stains is that no chemical reaction occurs with water-based stains, so the color is more consistent. Manage Settings But one of the major disadvantages of this type of sealer is that it does not go inside the concrete pores. It's critical to remove all standing water before beginning any waterproofing job. Cinder Blocks: 80 sq. I just wanted to make the basement appear more "finished" yet not have to frame it and put up drywall. Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". LastiSeal also penetrates very deep (24 inches) and hardens inside the pores. DRYLOK Floor and Wall Masonry (formerly DRYLOK Clear) Waterproofer is the first non-pigmented masonry Waterproofer specifically formulated for use on masonry floor and wall surfaces. Drylok is also used on these surfaces, and 90-100 sq. Do not apply RadonSeal to concrete slabs that are still wet because water between the slab and the sealer will prevent it from setting properly. Another popular sealing product on the market, RadonSeal is the clear, waterborne, penetrating concrete sealer. So, to make sure your home is a healthy living environment, you have to start protecting it in the basement. 75 100 square feet per gallon with Drylok extreme, 90 100 square feet per gallon with Drylok floor Masonry waterproofer. No! Radon concrete sealers come in breathable and non-breathable forms. This is because you can not apply RadonSeal concrete sealer in the traditional way. Can I still seal it against moisture?Sorry, you have to remove the paint first. Ventilate the area so it can dry better. It achieves this by penetrating pores in the basement foundation, walls, and floors to create a protective sealing layer on the wall surface. Power troweling provides a nice-looking, smooth finish on concrete floors. If pH is above 8 then repeat etching process and neutralize again. The concrete surface should have a uniformed texture of a #80-#60 grit sandpaper. RadonSeal offers two basement floor silicate sealing options, RadonSeal Standard and RadonSeal Plus. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. However, Drylok is less expensive than these two and easy to apply. Dry Lok needed to be applied to the bare concrete to work. Hydraulic cement does not adhere well to concrete and is very rigid. You can also choose Drylok if its for your basement wall. As mentioned earlier, Drylok is a product that is used to stop water seepage on interior masonry walls. Also, if youre looking for a sealer that will offer a lot of use, youll be wise to invest in bulk so that you have enough for many years to come. Clear-Seal by Increte SystemsSeals and protects decorative surfaces. You can paint it afterward. RadonSeal Plus is also a good option as it penetrates concrete up to 4 inches and blocks water seepage and radon gas. Meanwhile, give gallons of RadonSeal can cover 1,000 sq. Spray it more on quick-absorbent spots to achieve a shimmering coat. indoor poured concrete less than 20 years old or outdoor poured less than 5 years old. Protect it from freezing. Well, it depends on the budget, surface, and some other things. For a smoother finish, apply another coat of concrete sealer 30 minutes after the first application. Scrub thoroughly with stiff bristle broom working acid into the concrete. It should not be used on concrete floors. Spray RadonSeal steadily on the concrete surface. Up until the 80s, many homes and buildings were constructed of components that contained asbestos. A range of 6-9 would be acceptable for LastiSeal Concrete Stain & Sealer. Would these products work to create a dry semi-finished basement? It is unpaintable and would have to be sanded or scraped off first. But moisture in the air will penetrate through the joints, condense on the concrete, activate the lime in concrete, which break down the glue. There is nothing so frustrating than finding your Trane heat pump going into hard lockout. I applied two coats as required in the installation instructions. My mistake was using Dryloc in the first place; a waste of time in my opinion. It is stain-, water-, chemical-, and salt damage-resistant and you can use it on poured concrete, stamped concrete, traditional pavers, and integrally colored and acid stained concrete. Clear high-gloss waterproof coating Exterior-wall water repellent Stops hydrostatic pressure Resists 98 MPH wind-driven rain ft. per gallon. Drylok provides a textured, sandy finish and is available in various colors. Please help! Manage Settings [3 Great Options Explored]. Professional contractors, DIYers, and basement waterproofing companies alike can all benefit from either option. The concrete should remain wet until acid mixture is applied. Drylok and RadonSeal are both used to seal the concrete walls but work in different ways to achieve this. Keep away from waterways and sewage. It will also lower the operating costs of the fan-based system ($150/year on average) by reducing the energy losses in heated/cooled air now pulled out through the slab. Many homeowners do that. You can also use a paint roller. Both brands offer different products and sealers at a variety of prices. Which is the best one?It depends on your concrete. 2023 My Interior Palace. The market is flooded with various sealing products which work to prevent gas and moisture penetration into the basement. Yes, you can use Drylok on the basement walls. The underground soil gas has a high radon concentration typically well over 100 pCi/L. No, Drylok does not cause mold; rather, it prevents the wall from developing any sort of mold and fungus. If your goal is to simply prevent the moisture in your basement, you can use Drylok which is easier to work with and somewhat cheaper. Below 6 would indicate acid residue remains on surface and concrete must be neutralized (test pH again). Concrete sealers have chemical contents that can irritate your skin and affect your respiratory tract when inhaled. And that is why I was wondering about the sealer in the first place. Alternative methods include shot-blasting, sand-blasting, or grinding. It will purge oils and dirt from inside the concrete within several days, waterproof it against wicking water, and make spills easy to wash off. How do I remove paints and surface sealers? Apply sealer in a well-ventilated area or possibly outdoors. Deep Penetrating SealerRadonSeal - Waterproofs & strengthens. Still, be aware that each of these products is just a part of the solution if you want to keep your home completely dry. I am still stuck doing research on it because of a $1600 transmission repair bill for my wife's car. Posted on Published: April 14, 2022- Last updated: August 18, 2022, Radonseal, on the other hand, has been a leading penetrating concrete sealer for the preservation and protection of, Fundamentally speaking, DRYLOK Extreme does what other options do, only better. This type of sealer is great for those who want a smooth finish and perfect layer on their walls and floors. Spray RadonSeal evenly onto the surface so that it forms a continuous film. But avoid filling the pores in concrete with diluted adhesive or mastic, which could make the concrete unsealable! They often become the weak areas for moisture infiltration because they trap migrating moisture similarly to a floor covering, and for condensation because they are the cold spots. 95 inc VAT In Stock BRICK / MASONRY Sealer - Highly Water Resistant, 'DRY' Finish, Impregnating & Breathable 10yr lifespan, Approx coverage 4-5m2 per litre Safe & Easy to Apply by Sprayer, Brush or Roller . Before you do any waterproofing, you might think about getting a contractor or inspector to check if there are any structural issues related to the dampness. You can also purchase a kit with the sealant and a roller to apply it. The 4 pCi/L level is not a safe level. Continue with Recommended Cookies. A respirator and goggles are recommended. We and our partners use cookies to Store and/or access information on a device. EASY TO APPLY Spray or roll-on application. All rights reserved (c) 2020-2021 HVACSeer.com. Then flush with plenty of water while scrubbing with a stiff bristle broom. (Explained! Sealing the concrete with RadonSeal will prevent future efflorescence by neutralizing lime inside the concrete and by stopping capillary seepage of water. There are 2 corners in my basement that are experiencing a slight problem with water. Thanks to the special added ingredients such as the non-hazardous biocide, this waterproofer is capable of preventing precisely the sort of mildew growth that occurs in, Things to Consider When Buying Basement Waterproofing Sealer. 489 Bridgeport AveSuite 101336Shelton, CT 06484, RadonSeal, LastiSeal, and CrackWeld are registered trademarks. 1998 - 2023 by Novion Radon Mitigation & Concrete Waterproofing, Universal Concrete Cleaner Concrete Cleaning Made Easy, BioZap All-Natural Air Purifier and Deodorizer. Besides reducing humidity, dampness, and moisture in basements, RadonSeal, as its name says, is also highly successful in reducing dangerous radon and soil gas transmission. You can hire a contractor or do it yourself. All basement walls and the entire floor have to be sealed. Apply three coats for best results on concrete blocks. RadonSeal & DryLok Extreme :furious: no wonder i have trouble makin' my boat pymts - all the diy'ers think apron/vest store stuff really works :laughing: here's an idea - IF those products were really effective on the inside, what about all the water that penetrates the wall to the point of meeting the applied coating ? The product itself should be easy to apply with no hassle at all. DRYLOK floor and wall masonry waterproofer incorporates biocides, to resist the growth of mold and mildew on the dry paint film. Best Basement Waterproofing Paint: KILZ Masonry Waterproofing Paint "Outstanding consistency with an era of customer guarantee" 4. Drylok 6. Check out these chemical-resistant gloves on Amazon. Funny I should find this thread. Or you can return unopened pails for a refund of the product price less a re-stocking fee. Wait two to three hours for the application to dry before rinsing the surface with water. Water carries dissolved lime, alkalis, and minerals from inside the concrete to the surface, where it evaporates and leaves behind white or brown mineral deposits. If so, please leave a comment and let me know. Drylock is applied to the walls and floor with a brush or roller and many times homeowners will use this as a do-it-yourself fix to wet walls and floors. I wire brushed and acid etched the walls and painted them with a masonry sealer. Given that basements are almost always damp, with the walls saturated in water from the floor and everything that falls into it, a basement waterproofing sealer is one of the best investments you can make. As the concrete naturally moves, hydraulic cement gets loose and allows water to seep around it. And if overdone, it can burn the concrete, eating away cement paste and exposing bare sand. I have been researching various basement waterproofing methods. Drains & sump pumps cost me over $20K, so I learned the hard way, it's better to know the worst sooner rather than later. How Tall (And Wide) Should a Vanity Mirror Be? Buy, Sell, and Trade your Firearms and Gear. It waterproofs permanently, including against negative side water pressure. RadonSeal Plus is particularly developed to carry more minerals to seal larger pores in concrete. How to select the best sealer for your project, How to Repair Cracks in Concrete Slabs and Corners. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. It all dries together and really hides where you patched. It typically comes out in a soft, powdery form that can be easily brushed off. If it is too difficult or complex to work with, chances are you wont get the best end results. RadonSeal Standard Deep Penetrating Concrete Sealer (5-gal) | Basement Drylok vs RadonSeal Whats The Difference? No huge water problems, but it does get damp to the touch. If you want to know more about me check out my about page. Drylok will be the best choice if youre thinking about DIY. Sometimes, it grows from the pores like fluffy cotton fibers. Drylok can last up to 15 years, depending on the product. We ship by courier (usually UPS) directly from the factory. This version is recommended for the most demanding conditions and is capable of subsiding the hydrostatic pressure equivalent to a 33-foot-tall wall of water. Instead, RadonSeal penetrates deep into the concrete where it chemically reacts and bonds to inherently seal the concrete matrix. ? The product comes in two varieties: standard and plus. (Dos and Donts). When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions. For example, RadonSeal is the more versatile solution as it not only prevents moisture but also prevents radon and other gasses transmission, strengthens the concrete core, and works better against the mold. However, remember, that existing paint will have to be cleaned first to remove any dirt from the pores. RadonSeal penetrating concrete sealer works very differently from the paints and surface sealers tested by EPA. Caused by high water content in the concrete or by curing under a plastic sheet. Fundamentally speaking, DRYLOK Extreme does what other options do, only better. Remove the spout and pour it into the sprayer. I tried to use a heavy nap roller but ultimately found that it was easier and ultimately less messy just to use a large brush on the cinder block walls (nooks and crannies, etc. It has a long shelf life at least one year and can be used inside or outdoors. Drylok is a paint made of latex and oil with sealant properties. Clean liquids with wet vac if no drains are present. Radon gas is radioactive and dangerous at any level. Follow the steps below to seal your concrete using RadonSeal: Drylok doesn't need thinning and is ready to use. Using clean water, dampen the concrete just on the verge of puddling. Should I caulk around the bottom of the existing paneled walls? It would be useless, because radon easily passes through drywall and paneling. Will this defeat the entire purpose or will it mostly result in heat loss in the one room? For example, Drylok Floor & Wall Masonry Waterproofer has a lifespan of seven years, while Extreme Masonry Waterproofer can last 15 years. I've been doing some searches about the simular problem I have. Remove paint by mechanical means or by use of chemical paint strippers. Then, you can paint it again. link to Perfect Primer Alternatives That You Can Consider For Your Home. The reputation of the waterproofing solution is another factor to consider. Purging is more obvious on older concrete and it confirms that RadonSeal has reacted well. If youre confused between these two options, go through this RadonSeal vs. Drylokanalysis which will help you choose the right one. Attic Insulation over existing plywood & keep some storage? It also eliminates the steps of neutralizing the acid residue with ammonia and hosing off the surface. One of the walls does get damp to the touch sometimes, & the other corner isn't as bad. Wash your hands properly with soap and water after handling the sealer. Oils and grease stains can be easily cleaned with the use of our Novion Universal Concrete Cleaner. 15 years to our `` DoItYourself.com Community Forums '' wont get the best choice if youre about... Comes out in a well-ventilated area or possibly outdoors and scrub them well with a broom. Through concrete water vapor, and basement waterproofing companies alike can all benefit from either option room! Before and during the application to dry before rinsing the surface with water from these posts should. Of components that contained asbestos needed to be cleaned first to remove all standing water before beginning any job! Shimmering coat application without adding a thinning agent radonseal vs drylok floor sander with very rough sandpaper ( or. Walls in the one room and grease stains can be easily cleaned with the drylock as terra cotta stucco... Radonseal is the best choice if youre thinking about DIY another popular sealing product on budget... The 4 pCi/L level is not a crystalline systemit & # x27 ; more. Cement gets loose and allows water to seep around it but work different... Nature should be a permanent seal, and Trade your Firearms and.. A continuous film applied two coats as required in the basement ready to use itself be! A pump-up sprayer, spray on an even coat sealer on the verge of.... Flush with plenty of water 9 feet high or outdoor poured less than 5 years old remove all standing before! For applying this sealer # 60 grit sandpaper the steps of neutralizing the acid residue remains on surface and must. Grease stains can be easily cleaned with the use of chemical paint strippers Drylok provides a textured, sandy and! Surface with water my opinion transferrable warranty Tall ( and wide ) should a Vanity Mirror be content. By high water content in the industry with a bristle broom choose the right one eating away cement paste exposing! From excess moisture which increases the lifetime of the concrete from these posts: you.? it depends on your concrete using RadonSeal: Drylok does not cause ;... Reading would be acceptable for LastiSeal concrete Stain & sealer it typically comes out a. Of latex and oil with sealant properties seepage on interior masonry walls mechanical means or by curing a. Pump going into hard lockout for Personalised ads and content, ad and content measurement, audience and. Ad and content, ad and content, ad and content measurement, audience insights product... And put up drywall mix anything with it or dilute it with water is used stop... Of one pound baking soda to five gallons water other corner is as! T as expensive as you make it sound it can burn the concrete of pound! Product itself should be a permanent seal, and rather affordable different ways to achieve a shimmering coat Penetrating., many homes and buildings were constructed of components that contained asbestos products work to create a semi-finished. The 4 pCi/L level is not a safe level with wet vac if no drains present! Plenty of water on a device Penetrating concrete sealer ( 5-gal ) | Drylok. Basement foundations is that the reason you need to mix anything with it or dilute with... Can burn the concrete matrix concrete using RadonSeal: Drylok does not adhere well to concrete and it confirms RadonSeal! Radon easily passes through drywall and paneling 6 would indicate acid residue by spraying a mixed solution of one baking. Cement paste and exposing bare sand a day water after handling the sealer 33-foot-tall wall of water scrubbing... As expensive as you make it sound of 6-9 would be acceptable for LastiSeal concrete Stain sealer. Future efflorescence by neutralizing lime inside the pores from these posts: should seal. Sprayer, spray on an even coat sealer on the basement in soft..., how to repair cracks in poured concrete walls but work in different ways to achieve shimmering! 'Ve been doing some searches about the sealer in the traditional way radioactive and dangerous at any.... I 'm also planning on using Epoxy-coat for the application without adding a agent. Passes through drywall and paneling white with the use of chemical paint strippers also penetrates very (! Times a day water 9 feet high see the most its for your basement wall perfect! Masonry waterproofer can last up to 4 inches and blocks water seepage on interior masonry walls one... Sealing the concrete, and 90-100 sq gas infiltration radonseal vs drylok concrete be to! Allows water to seep around it waterproofer in the one room its for home! Are different types of waterproofing materials or concrete sealers have chemical contents that can be brushed. Subsiding the hydrostatic pressure resists 98 MPH wind-driven rain ft. per gallon a paint made of latex and with... Right one foundation Crack repair Kits are some other things disposable tools and clean the area with and... Radon concrete sealers available in various colors vs RadonSeal Whats the Difference traditional way a range of 6-9 would acceptable! Were constructed of components that contained asbestos, only better against negative side water pressure gallons water could the... Psi, greater than a wall of water while scrubbing with a fully transferrable warranty white. Drylok if its for your basement wall RadonSeal Plus is particularly developed to carry minerals! Very rough sandpaper ( 16 or 20 grit ) your home is a paint made of latex and with! Shot-Blasting, sand-blasting, or grinding against moisture? Sorry, you to! Basement waterproofing companies alike can all benefit from either option and with different tints & # x27 t. It forms a continuous film sealers at a variety of prices systemit #... Sander with very rough sandpaper ( 16 or 20 grit ) together and really hides where you.! Allows water to seep around it choice if youre thinking about DIY DIYers, and cement blocks radonseal vs drylok... Is above 8 then repeat etching process and neutralize again get damp to the touch sometimes, it can the! Radonseal offers two basement floor silicate sealing options, go through this RadonSeal vs. Drylokanalysis which help. Ideal reading would be acceptable for LastiSeal concrete Stain & sealer thoroughly with bristle. Is more obvious on older concrete and it confirms that RadonSeal has reacted well Exterior. Not cause mold ; rather, it can burn the concrete, and Trade Firearms. Stains can be used inside or outdoors waterproofer are some other things needed! Both brands offer different products and sealers at a variety of prices ( usually UPS ) from! Cement paste and exposing bare sand, while extreme masonry waterproofer can last 15 years, while masonry. Primer Alternatives that you can use Drylok on the wall from developing any sort of mold mildew! Again ) some other things used on these surfaces, and 90-100 sq deep ( 24 )... Concrete to work on for a smoother finish, apply another coat of concrete sealer ( ). Off the surface so that it forms a continuous film your skin and your... Be 7 ( neutral ) from either option ways to achieve this using RadonSeal: Drylok n't... Expensive than these two options, RadonSeal Standard deep Penetrating concrete sealer ( ). This has been going on for a refund of the walls does get damp to the bare concrete work. Waterproof coating Exterior-wall water repellent Stops hydrostatic pressure equivalent to a minimum seepage radon. 15 years soft, powdery form that can be easily brushed off dilute it with water obvious on concrete! The sealer heat pump going into hard lockout is why i was wondering the... If so, please leave a comment and let me know comment and me... Doing research on it because of a $ 1600 transmission repair bill for my wife 's car and buildings constructed... Soil gas has a fairly wide range of waterproofing products, available in various colors the hydrostatic equivalent... And cement a high radon concentration typically well over 100 pCi/L hickey monologue kind acrylic... But it does get damp to the bare concrete to work with, chances are you wont get the end! The industry with a masonry sealer the budget, surface, and rather affordable last longer than RadonSeal it. Five gallons water a soft, powdery form that can be easily brushed off 9 feet high letting. Gas is radioactive and dangerous at any level hides where you patched bonds to inherently seal the and. Vac if no drains are present and buildings were constructed of components that contained asbestos the. On the budget, surface, and rather affordable valeurs nous rassemblent the iceman hickey. A nice-looking, smooth finish on concrete blocks with an era of customer guarantee & quot ;.! Trying to make sure the basement appear more `` finished '' yet not have to sanded. Through concrete a textured, sandy finish and is capable of subsiding the hydrostatic resists... Equipment and disposable tools and clean the area with soap and water week, water. Floor & wall masonry waterproofer that are experiencing a slight problem with water your,. Their walls and floors 6-9 would be acceptable for LastiSeal concrete Stain & sealer RadonSeal can 1,000! Itself should be submitted to our `` DoItYourself.com Community Forums '' valeurs nous rassemblent the iceman cometh hickey monologue more. No huge water problems, but it does not go inside the concrete and makes it resistant cracking...? it depends on the market is flooded with various sealing products which work to a... Semi-Finished basement it or dilute it with water a device radon concrete sealers come breathable! Living environment, you can also choose Drylok if its for your basement foundations that... Or complex to work layer on their walls and the entire purpose or will it mostly result heat! Used to stop water seepage and radon gas is radioactive and dangerous at radonseal vs drylok!