When concrete leaks or cracks need sealing, Sika is the chemistry we trust. We apply Sika waterproofing membranes, injection systems, repair mortars and floor coatings to the full manufacturer spec, with primer, body and topcoat in sequence. Every job gets a free written estimate.
Water finds cracks. Concrete moves. A rigid coating cracks where the slab shifts, and the leak returns. Sika waterproofing (Sikalastic, Sikagard) uses elastomeric membranes that flex with the concrete instead of splitting apart, which is why the seal holds below grade through freeze-thaw cycles.
We evaluate whether the issue is preventive waterproofing, an active leak, structural spalling or a finished floor, then select the matching Sika product line and chemistry for the substrate.
Prepare the surface
The concrete is cleaned and profiled to the moisture and texture the Sika system requires. Cracks are routed and cleared if injection is the solution.
Install primer, body, topcoat
We apply the full Sika system in the published sequence, at the specified temperature and lift thickness, using the exact chemistry for the environment and exposure.
Cure and hand over warranty
Each layer cures on the manufacturer schedule. We document the install for the product warranty and provide data sheets so future work stays compatible.
Below-grade specialist
Sika Waterproofing & Injection for Foundations
Most Sika work happens below grade, where water pressure and freeze-thaw cycles test every seal. Sika waterproofing on foundation walls and under slabs uses elastomeric chemistry that flexes with concrete movement, not the rigid coatings that crack and leak again next spring.
Inside the building, Sika crack injection stops active leaks through walls and slabs without digging up the yard, and Sika MonoTop repair mortars rebuild structural concrete to the original profile. Together they are why a Sika install holds instead of becoming a repeat project. We also handle concrete foundation work and basement concrete systems.
Which Sika line for which job, injection, waterproofing and warranty in Gatineau.
Often, yes. Sika crack injection with SikaFix HH polyurethane seals active cracks from inside the wall and stops the leak, without needing to excavate the outside of the foundation in most cases.
Sika waterproofing is a system applied to a whole wall or slab to keep water out. Crack injection is a targeted repair that seals a specific crack already letting water through.
Yes, the right one can. Sika MonoTop repair mortars rebuild spalled and structural concrete to original profile and strength, with the chemistry chosen to suit whether the repair is cosmetic or load-bearing.
Because elastomeric chemistry actually flexes with concrete movement. A rigid coating cracks where the substrate moves, and the leak comes back. Sika systems were developed to flex and seal, which is why they hold up below grade.
Yes. We install Sika products as a system, primer, body and topcoat in the published sequence and chemistry. That is what keeps the manufacturer warranty intact and what makes the install actually perform.
Client reviews
What Gatineau Clients Say About Their Sika Installs
Sika crack injection stopped a leak we had chased with caulking for years. They sealed it from inside and the basement has been dry through two springs.
M. E.
Homeowner
★★★★★
Full Sika waterproofing on a new foundation. Elastomeric so it can flex with the concrete and not crack off the way the old rigid coating did.
A. D.
Builder
★★★★★
SikaTop repair on a worn loading-dock area. Profile is exact, took our forklift traffic, and they handed over the data sheets for our records.
J. E.
Commercial property manager
★★★★★
They install Sika as a full system, not just a coat of the product they have on the truck. That difference shows up in how long the install holds.
L. G.
General contractor
From the blog
Concrete Guides & Articles
Practical reading on planning, finishes and caring for concrete in Gatineau.
A leaking foundation, an active crack, spalled concrete or a floor that needs sealing, tell us what is happening and we will spec the right Sika system and send a written, itemized quote.
