Algoma Contractors Inc.


Waterproofing is fundamental to protecting structures and building sites from water and moisture problems. 

Total Industrial and Commercial Waterproofing Package

Algoma’s complete waterproofing service includes detailed records of work performed, initial inspection, consultation, and full warranties with quality control testing based on up-to-date-safety policies.  

Internal & External Waterproofing

Algoma specializes in exterior and interior waterproofing solutions that prevent outside water penetration and inside moisture. Algoma applies the right waterproofing treatment for surfaces to divert water away from valuable assets and extend an investment's life, including: 

  • Foundations
  • Internal or External Structural Walls
  • Floor Slabs
  • Wall Door Crevices
  • Internal Water Management System

For cases where the requirement is to excavate down to an affected area, trained experts will inspect and make recommendations best suited to your needs. 

Cold Fluid Applied

Where complete coverage with a sheet membrane is unlikely, cold fluid-applied membranes are an ideal solution. 

Hot Rubberized Asphalt

Hot rubberized asphalt waterproofing membranes for vertical and horizontal applications. Ideal for waterproofing parking, plaza, bridge, tunnels, promenade decks, pedestrian concourses; and similar types of construction where a monolithic waterproofing membrane is desirable.

Liquid Membranes

Save time, money, and effort with a high-performance liquid waterproofing membrane. Liquid waterproofing solutions sprayed or hand applied to surfaces like balconies, decks, roofs and car parks seamlessly protect against lateral water migration. 


Breathable, seamless coatings applied by spray or brushing over masonry patching, behind tile and concrete surfaces protect reinforced concrete structures.

Sheet Based Waterproofing Membranes

Waterproofing membranes are available in sheet form or liquid form. Sheet membranes are thin layers of water-tight material laid over a surface. The most common type of sheet based membrane is a bituminous waterproofing membrane. These sheets provide a waterproof barrier.