How To Fix Old Crumbling Basement Walls
Old crumbling basement walls are a common problem for homeowners. The good news is that there are a number of ways to fix them. The best approach will depend on the severity of the damage and the type of wall.
If the damage is minor, you may be able to repair the wall yourself. However, if the damage is more severe, you will need to hire a professional. Here are a few of the most common ways to fix old crumbling basement walls:
- Patching: This is a simple and inexpensive way to repair small holes or cracks in the wall. To patch the wall, you will need to clean the area and apply a patching compound. Once the patching compound has dried, you can paint over it.
- Repointing: This is a more involved process than patching, but it is more effective for repairing larger cracks or holes. To repoint the wall, you will need to remove the old mortar and replace it with new mortar. Once the new mortar has dried, you can paint over it.
- Parging: This is a process of applying a thin layer of cement to the wall. Parging can help to seal the wall and prevent further damage. To parge the wall, you will need to clean the area and apply a bonding agent. Once the bonding agent has dried, you can apply the cement. Once the cement has dried, you can paint over it.
- Underpinning: This is a more expensive and involved process, but it is the most effective way to repair a severely damaged wall. To underpin the wall, you will need to excavate the soil around the wall and install new footings. Once the new footings are in place, you can rebuild the wall.
Which method is right for you will depend on the severity of the damage and the type of wall. If you are not sure how to repair the wall yourself, you should hire a professional.
Here are some additional tips for fixing old crumbling basement walls:
- Make sure the wall is dry before you start repairing it. If the wall is wet, the repairs will not be as effective.
- Use high-quality materials when repairing the wall. This will help to ensure that the repairs are durable.
- Follow the manufacturer's instructions when applying the patching compound, mortar, or cement.
- Allow the repairs to dry completely before painting over them.
By following these tips, you can help to fix old crumbling basement walls and restore your basement to its former glory.

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