Strataline
Call (416) 471-5999
Finished glazed patio door integrated into the brick exterior beside an Aurora pool deck.

DOORS · WINDOWS · CUTOUTS

Exterior doors, replacement windows and custom wall openings.

Replace an entrance, upgrade drafty or outdated windows, or create a new opening where there is none. Strataline coordinates the product, opening, sealing, trim, drywall and paint so the project looks complete when we leave.

Three complete services

The right scope for the opening.

Start with the product, the existing conditions and the finish work needed around it.

Black double entry doors with decorative glazed panels set in a brick wall.

Exterior Doors

Upgrade the entrance with a properly measured and installed exterior-door system, completed with the threshold, hardware, sealing and surrounding trim.

  • Entry doors
  • Patio and garden doors
  • Sidelites and transoms
  • Threshold and weather-sealing work
  • Interior and exterior finishing
Explore Exterior Doors
Black-framed window installed in a light-coloured exterior wall.

Replacement Windows

Replace drafty, fogged, damaged or outdated windows using the installation method appropriate for the existing frame and opening.

  • Retrofit replacement
  • Full-frame replacement
  • Perimeter insulation and sealing
  • Jamb and casing work
  • Drywall and paint transitions
Explore Replacement Windows
Aurora brick exterior during the window-to-patio-door conversion with the full-height opening prepared.

Cutouts & New Openings

Create a new opening, enlarge an existing one or convert a window into a door, with the construction and finishing completed on both sides of the wall.

  • New exterior-door openings
  • Window-to-door conversions
  • Enlarged door or window openings
  • Garage-to-house entrances
  • Framing, sealing, trim, drywall and paint
Plan a New Opening
White entry door and sidelight viewed from a finished foyer.

Exterior Doors

A better entrance, completed on both sides.

Upgrade curb appeal, comfort and daily operation with an exterior-door system measured for the opening and finished as part of the home—not just a door slab set in place.

  • Entry, patio and exterior-door configurations
  • Sidelites, transoms, thresholds and selected hardware
  • Perimeter insulation plus air and water sealing
  • Interior jambs, casing and exterior trim
  • Paint and adjacent finish transitions where quoted
View Exterior Door Options
Finished living room with windows along two exterior walls.

Replacement Windows

A planned replacement and a finished opening.

Replace windows affected by drafts, air leakage, failed or fogged insulated glass, difficult operation, damage or an outdated design with a method suited to the opening.

  • Retrofit replacement when retained frames are suitable
  • Full-frame replacement when more of the opening must be addressed
  • Perimeter insulation, air sealing and exterior weather protection
  • Interior jamb and casing transitions
  • Drywall and paint transitions where included in the scope
Explore Window Replacement
Head-on exterior view of the original bedroom window before conversion.

Cutouts & New Openings

Need an opening where there isn’t one?

Create a new route, change how an existing opening works or make it larger, with the construction and finish transitions coordinated around the new door or window.

Window-to-door conversions

Turn a useful window location into direct access to a yard, landing or deck.

New and enlarged openings

Add a new exterior entrance or enlarge an existing door or window opening.

Garage-to-house entrances

Create a more direct daily route where the property conditions support the work.

  • Framing and opening preparation
  • Interior and exterior transitions around the new unit
  • Threshold, flooring, landing or deck relationships
  • Trim, drywall and painting where included
  • Concealed conditions documented before additional work proceeds
Request an Opening Review

Featured project · Aurora

A bedroom window became a direct route to the pool deck.

The original window provided a view of the backyard but no direct access. Strataline enlarged the opening, installed a full-height glazed door and completed the transition on both sides of the wall.

  • Existing window removed and opening extended
  • New glazed exterior door installed
  • Interior and exterior transitions completed
View the Aurora Conversion
Interior view of the original Aurora bedroom window before the patio-door conversion.
Before Original bedroom window facing the deck
Interior view of the finished full-height glazed patio door in the Aurora bedroom.
After Finished full-height glazed door
Interior wall in the Thornhill home before a doorway to the attached garage was created.
Before
Finished white entrance door viewed from inside the Thornhill home.
After

Featured project · Thornhill

A direct entrance added between the garage and the home.

The new route solved a daily circulation problem. Strataline coordinated the opening and door system with the rooms on both sides, then completed the interior finishing as part of the renovation.

New garage-to-house openings require site-specific review and may involve permit, fire-separation and hardware requirements.

View the Thornhill Garage Entrance

Connected finish work

One contractor from opening to finish.

Door and window work rarely ends at the frame. Strataline can coordinate the opening, sealing, trim, drywall, paint and connected finish work so the homeowner is not left managing several unfinished scopes.

  • Opening and framing
  • Insulation and sealing
  • Trim and drywall
  • Paint and finish transitions

Clear written scope

A complete scope before work begins.

The written proposal sets out the product, installation and finish work that applies to the project, together with known limits.

Where applicable, the proposal identifies

  • Product or allowance
  • Installation or opening method
  • Sealing and insulation
  • Interior finish work
  • Exterior finish work
  • Hardware and thresholds
  • Known exclusions
  • Treatment of concealed conditions

From first photos to a finished opening.

  1. 01

    Review the project

    Send interior and exterior photos, the property location and a description of what you want to change.

  2. 02

    Define the scope

    Review the product direction, opening conditions, installation method and connected finish work.

  3. 03

    Measure and coordinate

    Complete final measurements and confirm product details, approvals and scheduling before ordering.

  4. 04

    Install and finish

    Protect the home, complete the quoted work, check operation and review the finished result.

Client reviews

What clients say about working with Strataline

Feedback from homeowners and project partners across the GTA, collected from Google and Facebook.

1–1 of 1

Google review

He painted several other areas as well and sanded and reapplied urethane on all our new doors. He and Galina are superb craftsmen. Their attention to the smallest of details speaks volumes of the pride they take in their work.

Read full review

Ilene Bottos

Maple

Door & window FAQ

Questions before you choose the opening scope

Useful answers about products, replacement methods, opening changes, finish work and the first project review.

Do you supply the doors and windows as well as install them?

Yes. Strataline can coordinate the selected door or window, final measurements, installation and the surrounding finish work. Product choices and allowances are identified in the written proposal so the unit and installation scope remain clear.

What is the difference between retrofit and full-frame window replacement?

A retrofit or insert keeps the suitable existing main frame and much of the surrounding finish. Full-frame replacement removes the complete window frame, allowing more of the opening to be reviewed and the jambs, casing and exterior transitions to be rebuilt as specified.

Can you turn an existing window into an exterior door?

Potentially. A window-to-door conversion requires review of both sides of the wall, the opening, nearby services, exterior water management, the threshold and the landing or deck. In Aurora, we converted a bedroom window into a glazed door opening directly onto the pool deck.

Can you enlarge or relocate a door or window opening?

Yes, when the property and proposed location support it. New, enlarged and relocated openings need a site-specific review because structure, utilities, exterior finishes, drainage and access can change the construction plan.

What happens if rot or water damage is found after removal?

The condition is photographed and reviewed with you before work outside the written scope proceeds. The next step depends on where the moisture came from, how far the damage extends and what must be corrected before the new unit is installed.

Does the quote include interior casing and exterior finish work?

The proposal states what is included. Depending on the project, that may cover jamb extensions, casing, drywall and paint transitions, exterior capping or trim, masonry transitions, sealing, disposal and nearby floor or threshold work.

Do opening changes require drawings or permits?

They may. Like-for-like replacement and new or enlarged openings are different scopes. Municipal review, drawings, engineering or other approvals can apply to opening construction, and garage-to-house entrances can add fire-separation and hardware requirements.

What photos should I send for an initial review?

Send a clear interior view, a clear exterior view, one wider photo showing the nearby wall or room and close-ups of any damage or problem areas. Include the property city and a short description of the result you want.

Can you coordinate interior doors and trim as part of a larger renovation?

Yes. Interior doors, jambs, casing, baseboard transitions, hardware and paint can be coordinated as part of a room renovation or a multi-opening door and trim package.

Start with the opening

Send a few photos and tell us what you want to change.

For the first review, include an interior view, an exterior view, your city and the result you want. Photos can be sent by text to (416) 471-5999.

Project inquiry

Tell us about your project

A few details will help us understand the scope before we contact you.

Step 1 of 2 — Project

Get a reply within 12 hours.

Prefer to talk? Call (416) 471-5999 Text (416) 471-5999

Step 2 of 2 — Contact

Your contact details

Your information is used only to review and respond to your project inquiry.

Project inquiry

Tell us about your project

A few details will help us understand the scope before we contact you.

Step 1 of 2 — Project

Get a reply within 12 hours.

Prefer to talk? Call (416) 471-5999 Text (416) 471-5999

Step 2 of 2 — Contact

Your contact details

Your information is used only to review and respond to your project inquiry.