Caulking in Montréal
Residential and condo caulking across the island of Montreal. From Plateau plexes to downtown condo towers, we seal windows, doors and joints against water, air and cold.
Residential and condo caulking across the island of Montreal. From Plateau plexes to downtown condo towers, we seal windows, doors and joints against water, air and cold.
Montreal's often-older building stock is especially prone to infiltration: re-caulking on time prevents costly damage to masonry and window frames.
Our caulking services in Montréal
- Window and door caulking
- Full removal of old caulking
- Foundation joints and roof flashing
- Condo and co-ownership caulking
We serve Island of Montreal and all of Greater Montreal, 7 days a week, 9 a.m. to 9 p.m.
Our Services
Three areas of expertise, one mission: keep water, air, and cold outside.
Caulking
Removal of old caulking and professional sealing around your windows, doors, and joints — with Canadian-made Adfast products.
Residential
Single-family homes, semi-detached, and multiplexes: we protect every opening against water infiltration, drafts, and heat loss.
Condos
Multi-unit projects managed start to finish, in coordination with condo boards — without disrupting residents.
Thermos / Sealed Units
Fog between the panes? We replace the sealed glass unit (thermos) without changing the whole window — an affordable fix.
Mouse-Proof Soffits
We seal soffits and the entry points where mice get in. Referred by many local exterminators.
25-Year Guarantee · 25+ Years of Experience
Every joint is applied with Canadian Adfast products and the expertise built over 25+ years on the job. Our work is guaranteed for 25 years — we don't leave until you're satisfied.
- 25-year guarantee
- Certified Adfast products
- Installation down to -29°C
- Available 7 days a week
Frequently Asked Questions
My window is foggy between the panes — what should I do?
That's the sign of a failed thermos (sealed unit). No need to replace the whole window: we replace only the foggy sealed glass unit, which is far more affordable. Request a free quote.
Mice are getting in through my soffits — can you help?
Yes. We seal soffits and every entry point where rodents get in. That's exactly why many exterminators refer us: getting rid of mice is pointless if they can come back through the same openings.
How long does caulking last?
Quality caulking, applied with Adfast products on well-prepared surfaces, generally lasts 15 to 25 years depending on sun and weather exposure. That's why our work is guaranteed for 25 years.
When should I redo my window caulking?
As soon as the joint is cracked, detached, blackened or hardened, or if you feel drafts near the windows. A joint that lets water through should be redone quickly to prevent structural damage and mold.
Can caulking be done in winter?
Yes. Unlike many products, ours allow installation down to -29°C. No need to wait for spring to fix an urgent infiltration.
What products do you use?
We use Adfast products exclusively — made in Canada and designed to withstand the extreme temperature swings of Quebec winters.
Do you offer a guarantee?
Yes: our caulking work is guaranteed for 25 years. We don't leave a job site until you are fully satisfied.
Which cities do you serve?
We serve Montreal, Laval, Longueuil, Brossard, Saint-Hubert, Boucherville, Saint-Bruno-de-Montarville, Saint-Lambert, Candiac and all of Greater Montreal.
How much does caulking cost?
The price depends on the number of openings, the condition of the existing joints and access. We offer a free, no-obligation quote, usually within 24 hours.
Do you work on condos and co-ownerships?
Yes. We manage multi-unit projects from start to finish, in coordination with the condo board, with a clear schedule and minimal disruption to residents.