How can i waterproof my cellar floor? ?

Ahilly
by Ahilly

Its cemented but with the heavy rains, there’s been water coming up thru the cement and causing excessive dampness more than ever before. Theres a perimeter ditch that handles leaks from my stacked stone walls, but I’d like to keep the floor dry somehow. Is there a sealant or waterproofing that would work? Help !

  5 answers
  • Kelli L. Milligan Kelli L. Milligan on Sep 14, 2018

    I think there is a company that make custom cellar doors that might fit better


    • Ahilly Ahilly on Sep 16, 2018

      No cellar door to the outside. Water comes thru deep thru the bottom of the foundation.

  • Ken Erickson Ken Erickson on Sep 14, 2018

    Do you have a sump pump to remove the water from the perimeter drains. Also, ensure roof water is diverted away from the foundation. Thompson's Water Seal will help keep water out, but the main water problem needs to be fixed first. Hydraulic cement helps seal up leaks at wall.

    • See 3 previous
    • Ahilly Ahilly on Sep 17, 2018

      Trade you some rain for some sunshine ! LOL ! NE PA. here. Thanks...it’s raining now from hurricane Florence, just starting to get up north here, flash flooding watch til noon tomorrow. Just checked the cellar n it’s ok so far. My furnace just got fixed this morning, $248 worth of new parts, so I’ll need to keep close watch on the perimeter drain cover that it doesn’t get blocked like it did three weeks ago. (That’s what did the furnace in) 🙂 thanks again for the tip on hydraulic cement !

  • Linda Sikut Linda Sikut on Sep 14, 2018

    Hi Ahi,

    I haven't done this myself, but I would think that a marine concrete sealant would work for that project. Be sure to check what is listed and follow all instructions on the can. Good luck -Linda

  • Doris Doris on Sep 15, 2018

    Sounds like the water table might be getting higher with the rain if it's coming up from below the floor rather than from above. There's not much you can do about it if that's the case unless you want to dig all around the structure and put in weeping tile or something similar. Get someone in who has experience with this kind of thing and see what they say. Just putting a layer of sealant on the concrete isn't going to solve your problem in the long term. The water will still come in where the walls and floor meet and with a sealant, the water will likely break down the concrete which will be an added expense to replace if that happens.

    • Ahilly Ahilly on Sep 17, 2018

      What is weeping tile? I’ve not heard that term before. I hadnt thought about the water table rising. That makes sense! Thanks !

  • Doris Doris on Sep 17, 2018

    The short explanation is that it's a drainage system to keep water away from your building. It's installed around the building right at the bottom of your foundation (not under the foundation, but around it). You can read more about weeping tile here: https://en.wikipedia.org/wiki/Weeping_tile. In north-western Canada, where I'm from, it's used extensively due to the clay soil we're dealing with.

    • Ahilly Ahilly on Sep 17, 2018

      Ah...thats what we call a French drain. I’ve had several attempts at getting that done but the problem stems from a spring deep down that causes problems only when it rains heavily. We’ve had 7” of rain last month in just 2 storms, just two weeks apart. Right now the rain from the hurricane Florence is starting here, and more to come tonight til noon tomorrow. Flash flood watch til then. ☔️