Ballymartin Contracting Ballymartin Contracting Can Handle Any Contracting Job You Need For Your Home Or Business But We Specialize In Foundation Waterproofing Services For Residents Throughout The Greater Toronto Area. Foundation Waterproofing Can Reduce Or Eliminate Moisture That Causes Mould And Mildew. An Investment In An Efficiently Waterproofed Foundation Now Can Save You Hundreds Of Dollars In Leak Repair And Restoration Services Down The Road. A Damp Or Leaky Basement Can Cause The Following Problems Negative Effects On You And Your Family'S Health Reduced Property Value Damage To Valuables Structural Damage.