Property Managers
Suite-by-suite window replacement, entrance repairs and ongoing service calls for rental and mixed-use buildings. You get one contact and written scopes you can take to owners.

Get your written quote
Windows and doors for commercial property since 1986
GTS Windows & Doors has installed windows and doors in Waterloo Region since 1986, and our commercial work runs alongside our residential side from the same base at 47 Bridge Street East in Kitchener. We install and repair aluminum windows, storefront entrances, steel doors and frames, and commercial door hardware for buildings in Kitchener, Waterloo, Cambridge, Guelph and the surrounding townships. Typical buildings include retail plazas, low-rise offices, apartment and condominium buildings, light industrial units and institutional sites.
Our commercial clients are property managers, condominium boards, business owners, commercial real estate owners and general contractors. They need a trade that arrives when scheduled, works safely around tenants and customers, and leaves the building secure at the end of every shift. They also expect insurance and WSIB paperwork to be in order well before the first day on site.
We are licensed and insured, registered with WSIB, and a member of SAWDAC, the Siding and Window Dealers Association of Canada. Our installations carry a 20-year parts and labour warranty, and our Google rating stands at 4.5 stars from 31 reviews. Every commercial quote is itemized by opening, so owners, boards and project teams can see exactly what they are approving before work is scheduled.
Suite-by-suite window replacement, entrance repairs and ongoing service calls for rental and mixed-use buildings. You get one contact and written scopes you can take to owners.
Common-element doors, lobby entrances and window programs planned around owners, budgets and the manager's calendar.
Entrance doors, closers, exit hardware and glass replacement, timed so your doors stay open to customers.
Thermally broken aluminum windows, steel man doors and frames, and rear service doors for plants and warehouses.
Schools, places of worship, clinics and community buildings that need durable doors, secure hardware and work scheduled around their hours.
Supply and install packages for new builds, tenant fit-outs and renovations, with the field measurements and documents your site team needs.
Each service below has its own page with systems, process and pricing factors. Most commercial jobs combine two or more of them, and we scope them together so one crew handles the whole opening.
Thermally broken aluminum and commercial-grade vinyl windows for offices, retail and low-rise apartments. Read more about commercial window installation and replacement, including phasing in occupied buildings.
Narrow and medium stile aluminum doors with tempered glass, continuous hinges, closers and exit devices. See our storefront and aluminum entrance doors for frame and hardware options.
Hollow metal doors and pressed steel frames for service entrances, stairwells and utility rooms, including fire-rated assemblies where specified. Learn about commercial steel doors and frames and when each gauge fits.
Complete door installations covering slab, frame and hardware, from closers and panic bars to hardware prepared for your access control contractor. Our commercial door installation page walks through the process.
Dragging doors, leaking closers, broken glass, bent frames and hardware that no longer latches. Our commercial door repair service keeps entrances secure and working.
Commercial work lives or dies on planning. This is the sequence we follow on most projects, scaled to the size of the job.
Every job starts with a site visit to measure openings, check the surrounding structure and note access limits such as loading docks or street frontage. On new construction, we field-verify rough openings before ordering, because drawings and as-built dimensions do not always agree.
Where a project calls for them, we coordinate shop drawings, product data and hardware schedules for review by the architect or general contractor. Nothing is released for fabrication until those documents are approved.
We phase work by floor, suite or entrance and give property managers the dates they need to issue tenant notices. Our hours run from 7:00am to 9:00pm Monday to Saturday, so disruptive work can be booked before a store opens or after an office empties.
We provide a WSIB clearance certificate and proof of insurance before mobilizing, and we follow your site orientation and safety plan. Ontario requires approved working at heights training for workers who use fall protection on construction projects, and that applies to our crews on lifts and scaffolds.
These three terms get mixed up constantly, and the difference matters when you are scoping or tendering a job. All three are non-load-bearing glazed systems, but they are supported, engineered and installed very differently.
| System | Where it is used | How it is supported | Does GTS install it? |
|---|---|---|---|
| Storefront | Ground-floor shops, lobbies and building entrances | Set within an opening and anchored at the sill and head, usually one storey tall | Yes |
| Window wall | Mid-rise and high-rise condominium and apartment towers | Spans from slab to slab and sits on each floor | No |
| Curtain wall | Multi-storey office and institutional facades | Hung from the building structure and runs continuously past the floor edges | No |
We only publish project details with an owner's permission, so here are the kinds of commercial jobs we are commonly asked to price. Completed work is shared on our commercial projects page as it is documented.

Procurement teams and general contractors usually ask for the same documents before a new trade sets foot on site. Here is what we hold and can provide.

Yes. Our hours run 7:00am to 9:00pm Monday to Saturday and 9:00am to 5:00pm on Sunday, so noisy or disruptive work can be scheduled early, in the evening or on a weekend. Work outside those hours can be discussed for specific projects.
On projects that require them, we coordinate shop drawings, product data and hardware schedules for your review before anything is ordered. Tell us at the tender stage what the specification calls for, and we will confirm exactly what we can submit.
Yes. Call us at 226-806-0597 and we will tell you honestly how quickly a crew can attend. Our priority is to make the entrance or opening secure first, then schedule the permanent repair once glass or parts are ordered.
Yes. We provide a current WSIB clearance certificate and a certificate of insurance before work starts, and we reissue clearance on longer projects as each certificate expires. You can also check our clearance status directly through WSIB.
Send us the address, building type and a short description of the openings, and we will book a site survey. You will receive a written scope and quote you can take to owners, boards or your project team.
Call or text226-806-0597