Window Security Film & High-Security Locks in Markham

Security Film from $500 and High-Security Locks for Markham Homes

Toronto Window Shield installs invisible window security film from $500 and high-security door locks for homes in Markham, with a free in-home security check, professional installation, a lifetime residential warranty on the film and a 1-year workmanship warranty. Every job starts with the free check — we measure your glass, test your doors, and give you a written, itemized quote before any work begins.

Markham covers Unionville, Thornhill, Cornell, Greensborough, Box Grove and Milliken, and most of its homes are detached houses. Many were built in the last thirty years, with large ground-floor windows and sliding glass doors — and in Unionville, heritage homes still have their original doors and frames. Either way, the weak points are the same: ground-floor glass, patio doors, and the door frame.

The Facts at a Glance

What Do Markham Homes Need Most?

Start with the glass. Clear security film bonded to the inside of the pane holds broken glass together in its frame, so a struck window cracks but stays in place instead of opening a hole. Standard 7 mil film holds cracked glass in place; heavy-duty 14 mil+ film resists repeated strikes longer. Film is anchored to the frame, because film alone can be pushed out of a weak frame — anchoring is what makes the whole window act as one barrier.

Then the doors. Sliding patio doors are common in Markham homes, and a standard sliding door can be lifted off its track or forced along it. A pin lock at the top and a foot bolt at the base lock the door to its track. Front and side doors get high-security deadbolts, reinforced strike plates with 3-inch screws into the stud, and hinge reinforcement — because most forced doors fail at the frame, not the lock. On an older door, reinforcing the frame usually matters more than replacing the lock.

What Makes Markham Homes Different?

Markham has two kinds of homes side by side: heritage houses in Unionville with original doors and frames, and newer detached homes in Cornell and Greensborough with large ground-floor glass.

The heritage homes need frame reinforcement first — the strike plate, the hinges, the 3-inch screws into the stud. The newer ones need film on the big back windows first. The free check tells you which problem your house has before we quote anything.

A Landmark in Markham: Unionville Main Street

Unionville's Main Street, with its 19th-century storefronts, is Markham's historic heart. We serve homes across the city, from Unionville and Thornhill to Cornell, Greensborough and Box Grove.

How Booking Works in Markham

Book a free in-home security check by email at [email protected]. The visit takes about 30–45 minutes: we walk through every entry point, measure the glass, test the hardware, and leave a written, itemized quote that stays valid for 30 days. Most homes are finished in a single day, and the price never goes up once we have quoted it.

In Short

Verdict: for a Markham home, start with security film on the ground-floor glass, anchored to the frame, then add high-security locks and frame reinforcement on the doors — sliding patio doors included. Film starts from $500, the check is free, and the work is backed by a lifetime residential warranty on the film plus a 1-year workmanship warranty.

Questions and Answers

Do you serve all of Markham?
Yes — Unionville, Thornhill, Cornell, Greensborough, Box Grove and the rest of the city. Markham is part of our regular service area, and the free in-home security check applies there.

How much does window security film cost in Markham?
Invisible window security film starts from $500. The final price depends on the number and size of the windows and whether anchoring is included; a fixed price is confirmed in writing after a free in-home measurement.

My Markham house is old — do I need new doors?
Usually not. Most solid doors are fine — it is the frame, strike plate and hinges that fail first. Reinforcement hardware upgrades those weak points on your existing door for a fraction of the cost of a new door.

References

• International Window Film Association, Safety & Security Education Guide — "security film is an optically clear, elastomeric film applied to interior glass with an aggressive pressure-sensitive adhesive to hold broken glass together."
• FacilitiesNet, How Window Security Film Works — "security film (4–14 mil) is significantly thicker than solar film (1.5–2 mil) and is anchored into the window system by wet-glazed or mechanical installation."