Exterior Waterproofing vs. Interior Drainage Systems
I am trying to figure out the best approach for waterproofing my concrete foundation walls. One neighbor suggested digging up the exterior to put down a waterproof membrane and weeping tile, while another said an interior drainage tile with a sump pit is more cost-effective. For those who have gone through this in Toronto, which method held up better long-term against spring thaw and heavy rains?
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Both methods have their specific uses, but it really depends on your lot line access and budget. Exterior waterproofing stops water before it ever touches the foundation, which is ideal if you have room to dig around the perimeter. Interior systems direct water that penetrates the wall into an under-slab pipe to safely pump it out. Take a look at https://leaquida.ca/ to learn more about how interior vs. exterior waterproofing setups work for local homes. A good technician will inspect your wall cracks first to recommend the right fix.