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Finished living room with a bay window, light-coloured sofa and smooth ceiling.

REPLACEMENT WINDOWS · VAUGHAN, WOODBRIDGE, TORONTO & THE GTA

Replacement windows—measured, installed and finished as one job.

Strataline supplies and installs replacement windows, handling the measuring, perimeter sealing, interior trim and cleanup so you are not left arranging repairs after the installers leave.

Whole-home and multi-window replacement is our specialty.

  • 15+ years in the GTA
  • Owner-led window planning
  • WSIB covered
  • $5M liability insurance
  • Clean protection in occupied homes

CHOOSE BY ROOM AND FUNCTION

Find the right window style for each room

Different rooms call for different windows. Compare casement, awning, slider, hung and fixed styles by ventilation, view, privacy and ease of use. After measuring, we will confirm which options suit the space and how you want the room to function.

Casement window product illustration with one outward-opening sash.

Maximum ventilation

Casement

Casement windows open wide for strong, directional airflow and a clear view.

Typical uses: Living rooms, bedrooms and kitchens with exterior clearance.

Awning window product illustration with a top-hinged operating sash.

Ventilation in light rain

Awning

The top-hinged sash provides controlled airflow in light rain.

Typical uses: Bathrooms, kitchens and lower-level rooms.

Double-slider window product illustration with two horizontally sliding sashes.

Wide walls or lower-level rooms

Slider

Horizontal operation is practical where exterior clearance is limited.

Typical uses: Basements, bedrooms and wider walls.

Double-hung window product illustration with two vertically arranged sashes.

Traditional vertical appearance

Single or double hung

Vertical proportions suit traditional elevations and keep the sash inside the wall line.

Typical uses: Front elevations, bedrooms and classic home styles.

Fixed picture window product illustration with a six-pane decorative grille.

Maximum view and daylight

Fixed or picture

A fixed window keeps the glass area simple where ventilation is not needed.

Typical uses: Living rooms, stairwells and feature walls.

End-vent combination window product illustration with a fixed centre and operating ends.

Wider walls

End-vent or combination

Operating and fixed sections can balance airflow, view and wall proportions.

Typical uses: Large living areas, dining rooms and wide exterior walls.

Your priorities first

What would you like the new windows to improve?

A useful window consultation starts with what feels uncomfortable or no longer works as it should, then identifies the right priorities for each window.

01

Comfort

Reduce noticeable drafts and cold areas around aging windows by addressing the frame, perimeter sealing and installation method together.

02

Operation

Replace windows that stick, drag, fail to lock or are difficult to clean with a style suited to the room and access.

03

Quieter rooms

For rooms affected by road or neighbourhood noise, we compare glass and installation options based on the room and your priorities.

04

Appearance

Update dated frames, grille patterns, colours and window proportions while coordinating the casing and surrounding wall finish.

Tell us what you want to improve
Completed Georgetown kitchen with a fixed privacy-glass window, white casing, sink and double-herringbone backsplash.
Completed kitchen window and surrounding finish
Georgetown kitchen during demolition before the privacy-glass window and finishes were installed.
Kitchen wall prepared for the new privacy-glass window

STRATALINE PROJECT · Georgetown, Ontario

A new kitchen window, planned with the whole room.

As part of this whole-home renovation, Strataline added a fixed privacy-glass window above the kitchen counter. Its size and position were coordinated with the sink, cabinetry, backsplash and exterior brickwork, bringing in daylight without making the window look added afterward.

  • Fixed privacy-glass window added above the kitchen work area
  • Window size and position coordinated with the sink and cabinetry
  • Interior casing and backsplash transitions completed
  • Exterior brickwork finished around the new window
View the Georgetown renovation
Woodbridge house after six small upper-floor windows were replaced with three larger rectangular windows.
Prepared rectangular brick opening during the Woodbridge window enlargement.
Brickwork removed to form the larger rectangular opening.

Window enlargement · Woodbridge

Six arched windows became three larger windows.

The Woodbridge project combined window replacement with changes to the brick openings. Plywood protected the flat roof during removal, and new sills, perimeter insulation and custom aluminum completed the work around the new frames.

View the Woodbridge project

WINDOW AND GLASS OPTIONS

Choose the right window and glass for each room

We compare the choices that affect everyday use and how each window fits the room. Your quote lists the product, colour, glass and hardware details.

Concept diagram showing the layers in a triple-pane insulated glass unit.
01

Double-pane or triple-pane

Double-pane glass can suit many homes. Triple-pane windows may be worth discussing for rooms exposed to strong winds, larger glass areas or rooms where comfort and outside noise matter. The final choice depends on the selected window, its size and weight, and your budget.

Combination window product illustration with fixed and operating sections.
02

Operating or fixed

Operating windows provide ventilation and access for cleaning. Fixed sections provide more glass area and can be combined with casement, awning, hung or slider windows across a wider wall. The room, cleaning access and any required emergency exit help determine the layout.

Concept diagram showing Low-E coating positions within an insulated glass unit.
03

Standard or custom finish options

When we prepare your quote, we go over frame colour, grille style, privacy needs, screens, locks and hardware. We also confirm available Low-E configurations, obscure glass and any required tempered glass before ordering.

Images show window-style options. Final products, colours and configurations are confirmed before ordering.

Finished room with windows on both sides of a fireplace.

ONE COORDINATED JOB

The window, installation and finish work are handled as one job.

A well-made window can still perform poorly or look unfinished if the frame, sill and surrounding finishes are ignored. Before work begins, Strataline plans the perimeter sealing, exterior finish, jambs, casing, drywall and paint work.

  • Accurate site measurement
  • Retrofit or full-frame method based on the condition of the existing frame and surrounding wall
  • Squaring, shimming, fastening and perimeter insulation
  • Exterior sealing, capping or trim included in your quote
  • Interior jambs and casing included in your quote
  • Drywall and paint-ready correction where required
  • Protection and cleanup
  • Final check of window operation, locks, screens and seals

If removal reveals rot or water damage, we photograph it and discuss the repair before proceeding.

A clear path to installation

From first photos to finished windows

  1. 01

    Send photos

    Share interior and exterior views, your postal code, approximate window count and the problems you want to solve.

  2. 02

    Review and measure

    Discuss window styles, glass options, finish details and the appropriate installation method. Complete final site measurements.

  3. 03

    Confirm and order

    Approve the windows, glass, finish details, price and expected lead time before the custom order is placed.

  4. 04

    Install and finish

    Protect the work areas, install and seal the windows, complete the quoted finish work and confirm proper operation.

A quote based on your home

What affects the cost of replacement windows?

The number and size of windows, their style, the condition of the existing frames and the surrounding finish work all affect cost. A project may range from a few straightforward retrofit windows to full-frame replacement with new jambs, casing and wall repairs.

Your quote shows the windows, installation, trim and surrounding finish work so you can see what is included.

Request a detailed quote
  • Number and size of windows
  • Operating style
  • Double- or triple-pane glass
  • Standard or custom colours
  • Retrofit or full-frame installation
  • Interior trim and drywall work
  • Exterior capping or finish work
  • Access, height and existing damage
  • Large combination units

Client feedback

What Strataline clients say about our workmanship

Clients often mention Strataline’s craftsmanship, communication and care while working in finished homes.

“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.”

Ilene Bottos Maple · Google

“We had great experience working with Max. He was very attentive to all our concerns and requests, easy communication and quality of workmanship is outstanding!”

Jet Pro Google

“Excellent services: customer service, expertise, pricing policy. Impressive scheduling and delivering services by expected date of completion.”

Mykhailo Tvorysh Google
Read all client reviews

Replacement-window FAQ

Questions before you replace your windows

What determines the cost of replacement windows?

Window count, size, operating style, glass, frame colour and installation method affect the price. Access and surrounding finish work also matter, especially where complete frame removal exposes the wall. Compare the specified units, installation and repair scope separately. A quote for an insert in a sound frame is different from one that rebuilds the perimeter and interior trim.

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

Retrofit or insert replacement keeps a suitable existing main frame and can preserve more of the surrounding finish. Full-frame replacement removes the old frame to expose more of the opening and allows jambs, trim and perimeter details to be rebuilt as specified. The existing condition determines the recommendation; preserving a deteriorated frame is not an advantage simply because less finish is disturbed.

Should I choose double-pane or triple-pane glass?

Compare the actual available glass options for the room, exposure, window size, operating style, comfort needs and budget. The number of panes alone does not describe the complete window’s performance. We review the selected system and current specifications before ordering. No particular energy saving or noise reduction should be assumed without the relevant product information.

How should I choose between fixed, casement and sliding windows?

Start with how the room needs daylight, ventilation, access and operation. Fixed glazing does not open, while different operating styles use different clearances and hardware. Screens, furniture, exterior obstructions and cleaning access can influence the choice. Confirm the actual unit configuration before ordering rather than assuming all styles are suitable at every size or location.

How long do custom replacement windows take to arrive?

Production timing varies with style, glass, colour, quantity, supplier schedules and season. We confirm expected availability before the order is approved, then coordinate installation and any surrounding finish work. A manufacturing lead time is separate from the on-site work period. Custom selections should be settled early enough that the installation plan is based on confirmed products.

What is measured before replacement windows are ordered?

The site review confirms the opening and existing frame, the proposed installation method, depth, operating configuration and surrounding finish conditions. Approximate dimensions and photographs help with planning but are not ordering measurements. Jamb extensions, interior trim and exterior transitions also need consideration so the delivered unit fits the complete opening rather than just its visible glass area.

Why can condensation appear on a window that is not leaking?

Moisture on an accessible room-side or outside glass surface can result from the relationship between temperature and humidity. That differs from moisture trapped between sealed panes. Identify which surface is affected and when it appears before deciding on a repair. Replacing glass does not automatically resolve the room conditions that produce surface condensation.

What does Strataline’s lifetime workmanship warranty cover?

We warrant our labour and installation to the original client for as long as that client owns the property, subject to the applicable manufacturer-warranty period for supplied products. Where no meaningful manufacturer warranty exists, workmanship coverage continues through the original client’s ownership. If a problem is caused by our workmanship, we return and correct it. Coverage ends when the property is sold or another contractor modifies or repairs the covered work.

The warranty covers genuine labour or installation defects. It excludes ordinary dirt, normal wear, accidental damage, misuse, inadequate maintenance, unrelated water intrusion, structural movement and client-supplied product defects.

What does fogging between the panes usually mean?

Persistent moisture inside a sealed glass assembly calls for assessment of the unit and its edge seal. It cannot be wiped off by cleaning the exposed surfaces. A suitable sash and frame may allow the sealed unit to be replaced without changing the entire window. Frame condition, glazing details and the availability of compatible parts determine whether that repair is practical.

Will replacing windows solve every draft in the room?

No. Drafts can come from the operating seals, frame joints, the installation perimeter or other parts of the room. The assessment should identify where air is entering before choosing the scope. A glass-only repair does not address failed weatherstripping or a wall-to-frame gap. Replacement needs to be coordinated with the actual cause of discomfort.

Can windows be replaced in winter?

Some installations can proceed in suitable conditions. Temperature, wind, precipitation, sealant requirements and how exposed the opening will be influence scheduling. The plan also needs to protect the occupied rooms and coordinate removal with the new unit. We assess the actual conditions and product requirements instead of promising that every winter day suits every installation.

Can new windows include jamb extensions and interior casing?

Yes, when included in the quote. The work can cover jamb extensions, casing, caulking, drywall repairs and paint-ready finishing. Full-frame removal often changes more of the surrounding detail than an insert. Clarify what happens at walls, sills and nearby finishes before ordering so the completed window has a defined interior finish scope.

Can I replace a few windows now and the rest later?

Yes, a smaller group can be reviewed. Plan the style, colour and trim relationship with the remaining windows so the first stage does not create an awkward mismatch. Future product availability cannot be guaranteed. Grouping work can simplify delivery and installation, but the practical scope depends on the openings, budget and condition of the retained units.

What should I consider when choosing window frame colours?

Check the exterior and interior appearance separately, including how the frame relates to siding, masonry, trim and nearby windows that will remain. Available colours and finish options depend on the chosen product line and must be confirmed before ordering. A sample is more useful than a screen image when comparing tones under the property’s actual light.

Will new windows make a noisy room quiet?

They may improve comfort, but the result depends on the complete window, installation and other paths sound takes into the room. Glass thickness, the assembly and operating seals need product-specific review. Noise can also travel through walls, vents and doors. Avoid choosing solely by pane count or expecting a guaranteed reduction from a general replacement description.

What should be checked before replacing a bedroom or basement window?

Confirm the room’s use, the proposed opening and any applicable municipal requirements before ordering. A unit’s outside dimensions do not establish its usable opening when operated. Basement conditions can also involve wells, access, drainage and surrounding construction. We coordinate the required review for the project rather than giving one opening size as a universal rule for every property.

What if water is entering around the window frame?

The source needs investigation before choosing a glass repair or replacement. Water can travel through surrounding wall details, frame joints or drainage paths and appear at a different point inside. We document deterioration revealed during removal and discuss the required correction. A new unit and fresh caulking should not conceal an unresolved wall or flashing problem.

What photos should I send for a window-replacement review?

Send interior and exterior views, the approximate number of windows, your postal code, preferred timing and the problems you want to solve. Include trim, wall damage and operation issues where visible. Indicate whether casing or wall repairs should be included. Take photographs from a safe floor or ground position; final ordering measurements require a site visit.

Can damaged glass be replaced without replacing the whole window?

Often, when the frame and sash are sound and the system can be reglazed. For an insulated unit, the panes and edge seal form an assembly, so damage to one pane generally calls for assessment of the complete sealed unit. Rot, distortion or unavailable compatible parts can change the recommendation. The surrounding frame is checked before deciding on a glass-only repair.

Why does replacement glass need its own final measurement?

The visible glass area is not necessarily the ordering size. The unit’s thickness, construction, edge arrangement and fit within the sash or panel also need checking. Photographs support an initial review, but fabrication needs confirmed dimensions and specifications. Ordering by the exposed pane alone can produce glass that does not suit the existing glazing system.

Can replacement glass match the nearby panes?

We review visible tint, spacer appearance, internal grids, privacy texture and other details relevant to the opening. The original product or pattern may no longer be available, so an exact match cannot be assumed. Confirm the proposed appearance before ordering, particularly where adjacent units will be seen together. The glass specification still needs to suit the retained system.

Can glass in a sidelight, transom or door panel be replaced?

Those openings can be assessed for a compatible glass or insert replacement. The frame and panel design determine whether the glass, an insert assembly or a complete panel is the practical repair. Decorative patterns and matching parts may have availability limits. Review the actual construction and required specification rather than assuming every door can accept a loose replacement pane.

Will new patio-door glass make a sliding panel move more easily?

Not necessarily. Rollers, tracks, alignment and the panel or frame condition affect sliding operation, while glass replacement addresses the glazing. Tell us about sticking or poor closure during the initial review so the recommendation covers both symptoms. A suitable glass repair can retain the door, but it should not be presented as a cure for unrelated mechanical wear.

What affects the wait for replacement glass?

Dimensions, shape, glass construction, decorative details, supplier production and access for installation affect timing. Measurement, fabrication and installation are separate stages. The expected sequence is discussed with the quote once the required unit is understood. A standard-looking opening can still need a custom sealed assembly, so an immediate replacement should not be assumed from a photograph.

What changes when an exterior opening is enlarged or relocated?

The project becomes opening construction rather than a straightforward replacement. Structure, concealed services, exterior finishes, drainage, landing access and interior repairs need review. Drawings, engineering or municipal approval may be required for the proposed scope. We define those responsibilities before work, including how the new unit and the wall around it will be finished.

How are flashing and exterior sealing considered around a new opening?

The installation needs to manage water at the junction between the unit and the wall, not simply hide the perimeter with trim. Existing wall conditions, exposure and the selected system affect the detail. We review flashing, sealing and drainage as part of the opening scope. If removal reveals deterioration, its cause needs attention before the new finish conceals it.

What happens when removal exposes hidden damage?

We document the condition and explain what must be addressed before covering it. Rot, loose substrates, old leaks or concealed movement can change the preparation and construction scope. Additional work is discussed with the client before it proceeds, including the repair approach and its effect on price and sequence. A new finish should not conceal an unresolved cause.

How do we find out whether the renovation needs a permit?

The proposed work is reviewed with the municipality and appropriate professionals where required. Finish replacement and changes to structure, openings or services are different scopes; one municipality’s answer should not be assumed to apply everywhere. We define drawings, submission responsibilities and approval requirements before construction. Permit-required work does not begin until approval is issued.

Who prepares permit drawings and pays the professional fees?

We can coordinate an architectural firm with access to architects and engineers. The partner can prepare drawings and documentation and submit the application on the homeowner’s behalf; the homeowner is normally named as the applicant. Architectural, engineering and municipal permit fees are separate, and Strataline’s coordination fee is quoted separately. Responsibilities and costs are defined before work begins.

Can you install products I buy myself, and who covers them?

We may install client-purchased doors, windows, flooring, tile, plumbing fixtures, lighting, hardware and similar products. We remain responsible for the workmanship of our own installation. You remain responsible for the product warranty, defects, missing components and compatibility.

Replacement products and additional removal or reinstallation caused by a client-supplied product failure are chargeable. Such products can also affect price and schedule, so send the complete product information before buying or booking installation.

Who handles a warranty claim for a product Strataline supplied?

For a potential manufacturing defect within the applicable warranty period, we inspect the issue, document the condition, gather photographs and evidence, communicate with the supplier or manufacturer, and coordinate the claim for you. Strataline covers removal and reinstallation labour associated with a valid supplied-product warranty issue.

The replacement product is governed by the manufacturer’s written warranty; approval is not guaranteed. If a claim is denied because we installed the product incorrectly, we correct our work.

Does warranty coverage continue after a sale or another contractor’s repair?

No. Workmanship coverage applies to the original client and ends when the property is sold. It also ends when another contractor modifies or repairs the covered work. If you see a possible defect, let us assess it before arranging alterations. We investigate the cause so a workmanship issue can be corrected without losing the evidence needed to understand it.

Is it worth asking Strataline to supply the materials?

Often, yes. We can review product suitability and coordinate ordering with the installation, and we can often obtain better trade pricing. That is not true for every product, so compare the actual supplied scope and price. Supplying the product also lets us coordinate a potential manufacturer claim during the applicable warranty period, including our stated removal and reinstallation responsibility.

What payment schedule do you normally use?

A typical larger project uses 30% when booked or products are ordered, 30% when products arrive at the client’s property, and 40% following installation and completion. These terms are flexible, not mandatory for every project. The individual written agreement controls and identifies the milestones so payment follows the agreed purchasing and construction plan.

Is my deposit refundable before products are ordered?

Deposits are refundable before materials or products are ordered. Custom and special-order products become non-refundable once ordered, so confirm the selections and ordering status when discussing a cancellation. The deposit also reserves the project date. The written agreement should identify the ordering status and the commitments already made.

How long is a quote valid, and are website prices before tax?

Written quotes are normally valid for 30 days unless the quote states otherwise. Public website price ranges are before HST. Supplier pricing and availability can change after a quote expires, so an older estimate should be reconfirmed before products are ordered or a date is booked. The current written agreement sets the amount and terms for your project.

Can we stay in the home during a renovation?

Often, with a practical plan for usable rooms, protected circulation and temporary restrictions. The answer depends on the scope, drying stages and whether essential stairs, the kitchen or the only bathroom must close. We discuss those interruptions before scheduling. A contained work zone still needs to remain clear of household traffic while work is underway.

Does furniture have to leave the room?

A clear room gives the best working access, but the plan depends on what can reasonably be moved. We identify items to relocate, protect remaining furniture and floors, and keep a usable route outside the work zone. Fragile possessions need particular attention. Protection and handling are included in the scope according to the actual room, not assumed from its floor area.

What should we check with condo management before renovating?

Ask about renovation approval, contractor documents, work hours, elevator and loading reservations, common-area protection, disposal and any water shutoff procedure. Flooring or exterior-opening work can require additional product approval. Share those requirements before ordering or booking construction; building permission and municipal or trade approvals are separate parts of planning.

Do you renovate cottages and remote Ontario properties?

Yes, we accept suitable cottage-country and remote-Ontario projects, including water-access properties and island cottages. We have experience with tool transport by boat, barge delivery, window and door delivery, remote material handling, accommodation and freight planning. The access plan forms part of the quote because a cottage project involves more than the work inside the building.

How do you plan boat or barge delivery for a renovation?

We review the property access and the size, quantity and handling needs of the materials and equipment before arranging transport. Tools may travel by boat, while larger doors, windows or deliveries can require a barge. Delivery, unloading and the movement to the building must be coordinated with the work sequence so the needed materials arrive in a usable order.

Which extra costs can apply to a remote or island project?

Travel, accommodation, boat transport, barge rental and special freight are quoted according to the project. Tell us about the access arrangements early, including how products and tools reach the building. A remote job can require a different delivery and working schedule from a local house, and those logistics should be defined alongside the renovation scope.

Replacement-window quote

Get a replacement-window quote

Tell us approximately how many windows you are considering and what you want to improve. To help us prepare, text interior and exterior photos to (416) 471-5999 .

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