Local Expertise · St. Catharines
By Apex Windows & Exteriors | May 23, 2026 | 📍 St. Catharines, Ontario
St. Catharines — the Garden City — sits between Lake Ontario and the Niagara Escarpment. Homes from Port Dalhousie lakefront properties to Merritton and downtown brick builds all face heavy lake-effect moisture, freeze-thaw cycles, and summer humidity that punish older window seals.
At Apex Windows & Exteriors, we provide professional window installation across St. Catharines with same-day free estimates and a guaranteed price match against any written competitor quote.
We regularly serve Port Dalhousie, Merritton, Glenridge, Western Hill, and downtown St. Catharines. Many installs are on 1960s–1990s vinyl or aluminum replacements that have reached end-of-life — condensation between panes and stiff operation are the top reasons homeowners call us.
St. Catharines lakefront homes often need enhanced sealing packages — we include upgraded exterior caulking at no extra charge on full-home replacements.
Yes. Every estimate is 100% free with no obligation. We measure, explain options, and provide a written quote on the spot when possible.
Most projects schedule within 2–3 weeks of approval. Rush timing may be available — ask when you call 289-237-7803.
Absolutely. Show us any written quote from a licensed contractor for the same scope and we will beat it. No exceptions.