03:38PM | 12/16/04
Member Since: 12/11/04
6 lifetime posts
I need to know if it is ok to mortar and drylok my stone basement walls this winter. There is one leak that I am aware of that I would like to fix from the outside this spring. Am I taking any risks waiting until spring to fix the leak and doing all the inside work now? Any advice would be helpful, Thankyou.


07:44PM | 12/16/04
Member Since: 01/28/03
693 lifetime posts
It is a great waste of time and money trying to waterproof a stone foundation with mortar and DryLok.

Only real proven method to waterproof a stone foundation would be to excavte the entire exterior perimeter and install a rubber membrane around the full foundation.


04:52AM | 12/20/04
Member Since: 07/11/04
3 lifetime posts
I have a similar situation, but my basement uses cinder block not stone. Is membrane the way to go? And what is membrane?


12:16PM | 01/01/05
Member Since: 12/31/04
1 lifetime posts
Hi....I too have a fieldstone basement with a few leaks. I think most can be solved with some more raingutter, some backsloping the soil away from the house and maybe a band of plastic or membrane 2-3" from the house to shift water away. Then on the inside I was going to repoint the stone with Hydro-Seal 75 waterproof mortar and then give it 2 coats of their epoxy.

Can you give us more details on the membrane (brand, source, installation details) "homebild"?



02:11PM | 01/19/05
Member Since: 01/18/05
2 lifetime posts
My husband and I for a winter project are going to finish off our stone basement. Our house is about 100 years old. We are considering framing the walls and then have them spray foam. It should seal the stone and provide insulation for our walls. We will cover this with drywall. Has anyone tried this? We had some leakage of water in our basement, but since we landscaped the perimeter of the house it has been dry. Some of the stones look a little damp, but with all this rain it still has stayed dry. We also run a dehumidifier. If anyone has any comments good or bad please let me know.



01:00PM | 01/26/05
Member Since: 11/27/04
172 lifetime posts
an episode of this old ho use used closed cell foam spray on the inside with the framing up. do not know if the walls stay truly dry behind this system.

another system is

left 8 inches down on the inside and tucked into internal draintile in the slab to catch all leaks and keep the wall dry. the top 8 inches of foundation being used to vent inside moisture out.

if possible to dig up outside and use srayed on rubber membrane to seal the gaps and uneveness of the stone. .foundation looks smooth on the inside but not underground outside.

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