![typical residential concrete block foundation wall detail typical residential concrete block foundation wall detail](https://ncma.org/wp-content/uploads/2018/08/figure3-10.png)
Your interior foundation walls are parged or painted and appear to be trapping water because the parging or paint is flaking off.Maintaining the Gutters on Your Historic House Grade the ground around your foundation so it is angled away from your foundation and add ground extenders to your gutter downspouts. To solve this problem, you need to get the water to move away from your foundation. Your concrete blocks always seem wet and are deteriorating from excessive moisture.Repairing Mortar on Your Historic Masonry Building The mason should also install tiling around the foundation to channel water away from your foundation. If this is the case, the foundation may need to be repointed while the foundation is exposed. Have the mason verify the condition of the mortar when the foundation is exposed, because excessive moisture for an extended period of time can leave mineral deposits that break down the mortar. You should hire a professional mason to dig around the exterior of the foundation and coat the exterior surface with a waterproofing material. The cement coating (parging) on the exterior of your foundation wall is deteriorating.
![typical residential concrete block foundation wall detail typical residential concrete block foundation wall detail](https://i.pinimg.com/originals/ac/3e/4a/ac3e4ad850db5603c08d2a8020f4fbb6.jpg)
If this is the case, your foundation may need to be repointed while it is still exposed. Have the mason verify the condition of the mortar while your foundation is exposed, because excessive moisture for an extended period of time can leave mineral deposits that break down the mortar. You should hire a professional mason to dig around the exterior of your foundation and coat the exterior surface with a waterproofing material. This problem occurs because no exterior waterproofing was ever installed below ground. The mortar between your concrete blocks is showing excessive deterioration, and water is entering your basement.Your concrete blocks are cracked or broken.
![typical residential concrete block foundation wall detail typical residential concrete block foundation wall detail](https://www.foundeng.com/wp-content/uploads/2015/08/CRW-1.jpg)