Quick Answer: Does Flex Seal Work On Basement Walls?

Can I waterproof my basement from the inside?

DO apply a masonry waterproofing product to bare interior basement walls.

If your foil test showed that water is soaking through your basement walls and leaving them wet, seal the interior of the walls with a high-quality waterproof paint, such as DRYLOK White Extreme Waterproofer (available from Home Depot)..

How long does Basement Waterproofing last?

roughly 10 yearsIf you’ve had an interior and exterior primer and paint sealant applied that has experienced minimal stress from water, you’ll receive roughly 10 years of use — a common warranty time among basement waterproofing products. However, constant moisture and water exposure may decrease its life span.

What will flex seal not stick to?

Flex Seal will adhere to most any surface such as: wood, metal, tile, concrete, masonry, fabric, glass, plastic, aluminum, porcelain, dry wall, rubber, cement, some vinyls and so much more! Flex Seal may not be compatible with all plastics, vinyls, or rubbers.

What is the best sealant for basement walls?

RadonSeal Deep-Penetrating Concrete Sealer seals poured concrete and concrete blocks deeper and tighter than any other sealer on the market. The best basement sealer for your foundation walls and concrete floor against water seepage, vapor transmission and even radon gas.

Is Drylock good for basement walls?

DO NOT PAINT YOUR WALLS, even with Drylok or waterproofing paint. Concrete does not support fungal (mold) growth. Paint does. Even most antimicrobial and antifungal paints and coatings will eventually grow mold if the conditions are right.

What can I use to seal my basement cracks?

The best options are to clean off as much of the previous repair as possible and inject it with urethane, or go outside and seal it with either sodium bentonite or elastomeric membrane. All cracks eventually leak.

Is it better to waterproof basement from inside or outside?

Waterproofing the outside of your foundation is the best way to shore up your basement. Interior waterproofing can prevent water damage from getting worse, but having the repairs done on the outside fixes the weaknesses where the start.

How long does flex seal last?

30 yearsQ: How long does it last? A: Flex Shot will last up to 30 years and will not fade, dry, crack, yellow or deteriorate.

What is the best basement waterproofing system?

Waterproofing a foundation from the outside typically involves using polymers and membranes to coat the exterior of the walls, installing a trench drain underground, or a combination of both methods. When done properly, exterior drainage is generally considered to be the most effective way to waterproof a basement.

Will Drylok stop water?

If water is leaking through existing masonry or you need to protect new construction, DRYLOK® Extreme Masonry Waterproofer’s proprietary formula is GUARANTEED to stop water.

Does Drylok cause mold?

While both of our traditional Oil Base and Latex Base DRYLOK® Masonry Waterproofers are inert coatings, which mean they will not promote the growth of mold/mildew, DRYLOK® Extreme has a mildewcide additive to further prevent the potential for mold/mildew growth on the dry paint film under extreme situations.

Can You Use Flex Seal to waterproof a basement?

Flex Shot and Flex Seal Liquid are great options for attacking a basement wall leak. … Many other products in the Flex Seal Family are waterproof, so consider using Flex Glue, Flex Tape or Flex Seal Spray for other areas that may be experiencing water intrusion, or other repairs around the basement.

Will Flex Seal stop water leaks?

Flex Seal works because it sprays thick, much thicker than traditional spray paint. It seeps into cracks and, once dry, forms a rubberized surface that blocks out water, air and moisture – which helps prevent rust and corrosion.

Does Flex Seal adhere to concrete?

Flex Seal can be used on almost every surface: wood, metal, tile, concrete, masonry, fabric, glass, plastic, aluminum, porcelain, drywall, rubber, cement, and vinyl. Plus, it won’t sag or drip in the summer heat, and it won’t crack or peel in the winter cold. It even prevents corrosion.

What is the best basement waterproofing sealer?

Best Basement Waterproofing SealerLithi-Tek 9500. Waterproofer & densifier.Siloxa-Tek 8500. Penetrating water & salt repel.Lithi-Tek 4500. Concrete densifier & hardener.

Is Flex Seal really that good?

“That was pretty easy,” he said. Flex Seal doesn’t claim to be a glue; it’s a sealant. … Flex Seal covered over the holes in the gutter well, drying to a solid rubbery finish, and it worked well there, no drips out of the sealed holes.

Does Flex Seal really work on basement walls?

This stuff really works. I painted cinder block church basement walls on 2 areas and it’s been dry ever since. … You CAN NOT paint over the gallon paint. So if you want to seal the wall and then paint over it use the flexSeal spraypaint as you can paint over it.