Top 5 Best Basement Sealer Reviews With Buying Guide for 2022

Constructing a house is not an easy endeavor. As a homeowner, you should always be worried whether your property is safe from any damage whether it is from water or any other thing that might affect your basement. That is the reason, in this guide; I will take you through 5 best basement sealers you can trust. Later, I will also give you a chance to see some of the factors you need to consider when you are shopping for basement waterproofing products.



Editor's Rating


Liquid Rubber Foundation and Basement Sealant

5 Out of 5

Siloxa-Tek 8500

5 Out of 5

RadonSeal Plus Deep-Penetrating Concrete Sealer

5 Out of 5

Essential Values 1 Gallon Concrete Sealer

4.5 Out of 5

AMES Water Base Liquid Rubber

5 Out of 5

Top 5 Best Basement Sealer Reviews

After that short intro, it is time we delve into the various basement water sealers you can trust.

1. Liquid Rubber Foundation and Basement Sealant

You certainly want to seal your basement surfaces to prevent mildew and mold from encroaching your building. To get the ultimate protection try out Liquid Rubber Foundation and Basement Sealant. Liquid Rubber, USA, is the manufacturer of this magnificent brand.

The product is specially formulated for both outdoor and indoor applications. For this reason, you are not going to look for another sealant for applying outside or inside of your building.

The coverage area is entirely explained on the user label to help you buy the right quantities. All you need is to follow the easy and straightforward procedures provided.

This protective finish has an added advantage because of the surface area coverage it spreads. You are guaranteed flexibility in coverage, giving you an elongation of up to 900%. For Vertical surfaces, a gallon will cover 20 ft2 on the exterior, 50 ft2 on the interior. On flat a surface, it will spread up to 15 ft2.

Highlighted features:

  • Net weight is 42.2lbs.
  • Packaging dimensions are 12”x12”x16”.
  • Polymer material.
  • Waterproof.
  • Used for both residential and commercial buildings
  • Indoor and outdoor use.


  • It has a low odor.
  • Surfaces are easy to clean up.
  • It is water-soluble, therefore, eco-friendly.
  • Does not get sticky when it dries.
  • It has extensive spread coverage.


  • It is not recommended for long UV exposure.
  • Thickness consistency makes it difficult to apply.
  • It cannot be combined with other sealant products from Liquid Rubber.

2. Siloxa-Tek 8500 Concrete Sealer

Whenever you spot dampness in your basement, it is vapor transmission and water seeping through concrete surfaces. Dampness can destroy your building over time. That’s not enough. Mold and mildew breed on damp walls. They cause severe respiratory complications to you and your loved ones.

You require a special sealant that guarantees total eradication of these destructive fungi. Manufactured by a reputable company, Kretetek Industries Inc, Siloxa-Tek 8500 is a worthwhile sealant highly recommended for your basements.

Are you confused about whether to use the traditional silicon? Silicon is a temporal relief to control dampness in basements and is a cheap gamble that will leave you with regrets. This unique sealant will act on your surfaces through its hydrophobic agents by penetrating deeply on concrete.

When you apply this sealant, you create a bond on the pores to prevent any seepage of water, vapor, and gas transmission. Here’s another deal. You could be worried about freeze/thaw cycles. This product breaks the cycles and repels all water solvents hence maximally protecting your surfaces from cracks.

Highlighted features:

  • Weight is 9.75 lbs.
  • The packaging dimensions are 11.5”x11.5”x9.09”.
  • Its color is clear.
  • Coverage is 250 ft2.


  • It has a broad coverage area use of one gallon per 250 ft2.
  • It penetrates deeply into the concrete.
  • Easy to apply with a simple garden spray.
  • It does not stick permanently on the applicator.


  • It cannot be applied on wooden basements surfaces.
  • The company’s coverage estimate is too low.

3. RadonSeal Plus Deep-Penetrating Concrete Sealer

If you are bothered about the most effective sealer to buy for sealing your basement, then the right one is RadonSeal Plus Deep-Penetrating Concrete Sealer. Novion brands this product, and it has been trusted since 1997. It’s a formula for sealing concrete matrix.

The sealer blocks pores and capillaries by preventing the harmful water vapor, water seepage, and radon gas from slowly entering the walls. Humidity can cause extensive damage, such as cracking and growth of fungi. When you apply this sealer, you also eradicate crawlspace odors.

How it works is that the sealer can harden and strengthen capacity guard your walls from freeze/thaw, salt damages, efflorescence, and concrete surface damages. Your walls are permanently protected from peeling off as a result of alkali.

When it comes to the use of eco-friendly products, this is one of them. It is a water solvent, odorless, and does not rust.

Highlighted Features:

  • Item quantity package is one piece.
  • The dimension of the packaging is 16”x16”x16”.
  • Packaging weight is 47 lbs.
  • It is non-toxic.
  • It’s water-based.
  • It cures in three to seven days.
  • Quantity available is 5 gal.


  • It seals concrete permanently by deep penetration.
  • It does not require reapplication.
  • It requires a simple applicator to smear.
  • It is eco-friendly due to its capacity to dissolve in water.
  • The curing duration is short.


  • Does not work on wooden surfaces.
  • It does not seal cracks.

4. Essential Values 1 Gallon Concrete Sealer

If you plan to seal outdoor and indoor basement surfaces, you will not go wrong with Essential Values 1 Gallon Concrete Sealer. It’s an acrylic emulsion formula manufactured and branded by Essential Values, a USA company well known for providing top quality masonry products.

The sealer works well by permanently sealing off pores on non-resilient hard surfaces. A single application guarantees a long-lasting full seal. Your concrete surfaces will be uniquely protected from damaging objects. A glossy and smooth finish is more comfortable for you to clean and maintain.

You will be confident to work with this sealer without fear of guesswork. The application is process is straightforward with easy steps outlined on the user leaflet.

One gallon will spread a cool 1500 ft2. However, if you want to achieve the glossy look, you will be required to apply three coats with 500 ft2 per gallon. Within three days of application, your basement will be completely cured and ready for use.

Highlighted features:

  • One item package quantity.
  • Dimensions are 11.85”x6.1”x6.1”.
  • It is a ready to apply.
  • Has a curing period of three days.
  • Indoor and outdoor sealant.


  • It leaves a beautiful glossy finish.
  • It is water-based, thus environmentally user- friendly.
  • It provides a sound barrier against dirt.
  • It’s easy to apply with a simple brush or sprayer.
  • It’s not messy to clean.
  • It takes a short time to dry.


  • The specified coverage area on the manufacturer’s guideline is not accurate.
  • It is not suitable for basements used for garage purposes.

5. AMES Water Base Liquid Rubber

If you want to attain the best protection for your basement, you will require the best sealant. There are many brands in the market, and you may find yourself on the crossroad not able to make an informed choice. All those brands will seal your basement, but AMES Water Base Liquid Rubber by AMES Research Laboratories will help you achieve a superb and long-lasting seal.

You can use this sealer on concrete, metal, and wood as well as insulated concrete surfaces. It makes an excellent waterproofing for basement walls and foundations.

We recommend the sealant because of its formula to resist mold, mildew, and fungi. The combination of elastomeric, liquid rubber and strong adhesion makes it perfect for use in extremely cautious surfaces such as basements and foundations.

Its viscosity allows it to flow into cracks and curves seal off any leak. A gallon will be enough to cover 100 ft2. However, we recommend two coats for the best results and durability. You will not be subjected to more prolonged waiting because it dries up in 2 to 24 hours.

Highlighted features:

  • It has a rubber finish.
  • Components included are Deck Waterproofing Sealant.
  • It weighs 44.7 lbs.
  • Dimensions are 12”x12”13.75”.
  • It’s available in 5 gal.
  • The item packaged is one.
  • Strong adhesion.


  • Applied surfaces are easy to clean with water.
  • You can use paint over it.
  • Simple and easy to use.
  • It has a pleasant odor.
  • Offers excellent adhesion.
  • It is water-based.
  • Repels water.


  • The packaging box does not fit well.
  • It does not work well on the exterior basement.

Basement Sealer Buying Guide

Before deciding, which basement sealer you want to put your money on, it is important to know some of the subtle characteristics of some of these basement waterproofing products in the market.

Without further ado, let’s roll into some of those factors.

Things You Must Consider In Choosing Basement Sealers

1. Cost

The cost of a product is perhaps the first thing you need to consider before buying it. There is no difference with buying basement concrete sealer. The good thing about our choice of sealer bags is most of them are affordable. You don’t have to worry about the cost.

However, there is still need to check on the various products because each of them differ in prices.  In addition to the individual product cost, there is also the cost of repairing the basement.

Some basement wall sealers require that you use additional products such as adhesives in order for them to perform properly.

2. Effectiveness

I am sure it is not an easy thing to know whether the basement sealer you’re going to purchase is effective. However, your contractor will advise you on the best basement waterproofing sealer.

Some basement sealers have structural components that make them effective in sealing any leaks whether it is on the floor, wall, or even your ceiling.

3. Ease Of Use

This is very important. Whether you are going to use it yourself or you are hiring a contractor, if the sealer is complicated, it will not work for you. The ideal basement sealer should be easy to use.

Look for things such how easy it is to break the seal, how to remove the cork, and how to get the contents out of the container among other things.

4. Quantity

If you have huge cracks on your house or the place you want to repair is big, then you will need a bigger or a lot. To figure out the quantity of basement sealer you may first need to conduct a physical study of the area, which you want to repair.

The size and the weight of the container is also another thing to look at. Carrying large containers to a narrow gate or entrance will pose a challenge when withdrawing the contents.

5. Cure Time

It would be useless to apply a sealer on your oozing basement that will take 30 days to cure thus subjecting your family to dampness and coldness.

When looking for the best sealant for basement walls, go for the one that is effective and cures fast. If the sealer has these and other qualities, there is no need to leave it. Nobody will love to apply a sealer on their basement that will take days even weeks to cure.

Benefits of Using Basement Sealers

It is reasonable to believe that using the best basement sealers will do you more good than harm. Here are three main benefits of using water sealer basement waterproofing products and the basement concrete sealers

1. They Dry Fast

Unlike other basement sealing techniques such as digging a trench around the basement and ensuring water doesn’t reach your basement wall, basement sealers especially those on this guide dry fast.

Do not be surprised to learn that some of these waterproofing products mentioned above dry within a few minutes. That alone is a unique benefit that you need to cling on.

2. They Seal Completely

It is true that manufacturers make products differently and so it their presentation, However, if you land on the best basement sealer, you will forget about the leaking problems on your floor and wall.

The best basement waterproofing products in the market do not give room for doubts. Once they seal, you will only go to the shop to purchase the sealer to apply on a different location.

3. Many Are Odorless

Yes, many of the basement waterproofing products are odorless. Because of their odorless state, it is easier and safe to apply waterproofing sealer in your bedroom and within a few minutes, you can get to bed and have a nice slumber.

Frequently Asked Questions

My concrete wall is dry but I notice a crack, is this normal?

No! It would be normal if the crack is too small. However, if the crack is big enough to be seen from a certain distance, it should worry you.

What are the signs of a leaking basement?

The obvious indicators are pools of water that collects on the floor and water that trickles down on the walls of your house. Dampness on the corners of the wall and the formation of mold at some parts of the wall are all obvious signs.

What causes a leaking basement?

The major cause is a crack that can be either on the wall or on the floor. Due to the cracks, water can find its way to the basement. A weak spot at the basement is another cause.

The sealer I used has a strong odor, should I worry?

You shouldn’t be worried about the strong odor. You may need to be away from the new sealer for a few hours. Make sure the basement has a lot of fresh air, which will circulate and eliminate the odor.

What contributes to mold formation at the basement?

Usually, this happens in homes that have been built at areas that are known to be low-level. If you have built your house at the base of a hill, a slope, or in a valley, you can expect the basement to have mold or harbor dampness.

Can I do basement waterproofing on my own, if yes, which is the best way?

Yes you can do simple basement waterproofing. The easiest and fastest way it to ensure the basement is kept away from the foundation. Sloping away the ground around the foundation is one sure way of ensuring no water comes to your basement.

Final Word

Hitherto, you have the 5 best basement sealers that can help you deal with floor, wall, and basement cracks that let water percolate into your house. Do not subject your family to live in the cold while you can have the ideal basement waterproofing product that goes at a pocket-friendly price. A time is now to put to an end to those worrying cracks on your basement wall lest, they will end up being catastrophist.

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