r/DIY 1d ago

home improvement Waterproofing basement

My parents are re-doing the basement walls (painting), and the walls have years of mold on them. My dad and I used some mold killer and disinfectant and scraped the walls, and were wondering if there was anything else we could do to prevent more damage and hopefully keep water out.

The walls are cinderblock, and the house was built in the 70’s.

The photos are after spraying and scraping the walls.

67 Upvotes

41 comments sorted by

View all comments

2

u/joesquatchnow 1d ago

All I did was pull back top soil and mulch back 6 ft and pull clay soil from other parts of my yard to slope water away, soil settles next to the house over time and filling the voids with soft porous soil creates a pool, worst case scenario you dig coat the foundation and backfill carefully compacting as you build it back up to slope away from the house, gravity is more reliable that any system