
Dry basements along the St. Lawrence
Basement Waterproofing in Brockville, Ontario
Seaway Dry Basements finds where water is getting in and stops it. We waterproof foundations, seal leaking cracks, install sump pumps, repair wet basements and remove mould for homes across Brockville and the 1000 Islands area.
Basement Waterproofing Services
Water problems rarely have just one cause, so our services work together. A leak may need a crack repaired, a pump installed and mould cleaned up afterward. Choose a service below to see what the work involves, how the process runs and what you can do in the meantime.
Basement Waterproofing
Interior drainage, wall membranes and moisture control that keep water out of the living space and away from your belongings.
Learn about basement waterproofingFoundation Crack Injection
Sealing leaking cracks in poured concrete foundation walls from the inside, usually without digging up the yard.
Learn about foundation crack injectionSump Pump Installation
New sump pits, pump replacements, backup options and discharge lines sized for the water your home actually handles.
Learn about sump pump installationWet Basement Repair
Tracing leaks, seepage and condensation to their source, then fixing the cause rather than just drying the floor.
Learn about wet basement repairExterior Foundation Waterproofing
Excavating to the footing to add membranes and new weeping tile, stopping water at the outside face of the wall.
Learn about exterior foundation waterproofingMould Removal
Containment, cleanup of affected basement materials and fixing the moisture that let mould grow in the first place.
Learn about mould removal
Local Basements, Local Conditions
Brockville sits on the north shore of the St. Lawrence River in the Thousand Islands region and is one of Ontario's oldest communities, first settled in 1785. That history shows in its housing. Older homes here can have stone or block foundations, while newer homes typically have poured concrete walls with weeping tile and a sump pit.
The local climate tests every one of them. Cold winters bring repeated freezing and thawing that work on foundation walls and drainage. Spring melt and heavy rain saturate the soil, and humid summers bring condensation to cool basement walls. Understanding those seasonal patterns is the first step toward a basement that stays dry all year.
Signs Your Basement Needs Attention
- Damp patches or puddles after rain or snow melt
- Water at the joint between the wall and floor
- A crack in a poured wall that darkens or drips
- White chalky deposits on concrete or block
- A sump pump that runs constantly or not at all
- A musty smell, or spots on drywall and stored boxes
Any one of these is worth checking. Small problems are usually simpler to fix when they are caught early.
How We Approach a Wet Basement
Every basement is different, so we start by understanding the problem rather than selling a system. Here is how the work typically unfolds from first visit to dry floor.
Look for the source
We inspect the walls, floor, sump pit, grading, downspouts and window wells, and we ask when and where water appears.
Explain the options
You get a plain explanation of what we found and the work we recommend, from simple fixes to full systems.
Do the work properly
Work areas are protected, the repair is completed in a sensible order and the site is cleaned up afterward.
Prevent the next problem
We share practical habits, like seasonal pump tests and humidity control, that help keep the basement dry.
Moisture and Mould Go Together
Mould needs moisture to grow. A slow leak behind drywall, condensation on a cold wall or a damp carpet after a storm can all give it a start. That is why we treat water and mould as one problem. Our mould removal work always includes finding and fixing the moisture behind the growth, so cleanup is not wasted.
Where We Work
We serve Brockville, Prescott, Gananoque, Athens, Lyn, Mallorytown, Maitland and the 1000 Islands area. Communities along the river and inland share the same seasonal challenges, from spring melt to summer humidity. See the service areas page for a map of the region we cover.
Ready for a Drier Basement?
Tell us what you are seeing in your basement and we will help you understand the cause and the right fix for your home.





