Contact DSI Contracting today for prompt courteous service. We are Thunder Bays basement experts since 2010. We waterproof using henry-bakor blueskin, install new weeping tile, drainage systems , radon proof sump basins, sump pumps, drywells. We also install concrete blocks, straighten bowed walls. Trust only DSI Contracting for your foundation problems backed by the best 5 year warranty in Thunder Bay.

We also offer flood restoration services , remove mould and all contaminated wood studding from your home, renovate your basement complete, insurance approved contractor.