Basement Wall Waterproofing Paints?

It can be a pretty major expense to do it on the exterior also. Worst case scenarios, your digging down to the footer around the entire basement portion of the foundation. Which normally entails removing a/c units, decks, patios, landscaping and various other items people put on the outside of their houses. Not to mention the mess.
This is normally more so for block, since its more porous than poured concrete. They do have some pretty decent systems to channel the water away to a sump pump once it breaches the interior surface, and just discharge it a distance away from the house. With poured walls, they have some cool polyurethane sealer that they push in under pressure, from the inside, that works really well, but you're normally dealing with a single crack.

 

In my Tennessee house, there was a corner in the upper garage that had a pernicious water intrusion problem. I tried waterproofing the interior wall, but the water just lifted the paint off. Had the footer dug out and resealed, no change. Installed a sump pump, which helped, but didn’t solve the problem. Landscaper installed a french drain, but it didn’t help. He suggested a major regrade of the yard to try to redirect the water flow, which would have ruined the look of the front yard.

One day I had a roofer out to replace some storm damaged shingles, and he said, „I noticed your gutters were installed wrong.“ He reinstalled them on that side of the house, and the water intrusion problem completely disappeared.

 

You are not waterproof ing the basement. You are sealing out the humidity.

Waterproofing needs to be done from the exterior.

Make sure the downspouts are doing there job.

 

Negative grade is worse than bad downspouts.

 

While grading is key, half the time the gutters are clogged and downspouts aren’t hooked up. It rains and pours down foundation wall.

 

If the grade is correct, most of that water will roll away from the house.

 

Yea.....that could use a little grading out!