C Town Doors - Local Garage Door Specialists
A damaged or missing screen on a sliding patio door is the kind of thing that goes on the mental to-do list for weeks before it actually gets addressed. It's not urgent in the same way a broken roller or a failed lock is — but a torn or missing screen means insects inside the house every time you open the door through Calgary's summer, UV exposure without airflow, and in some cases a pet or child safety concern at an open door.
Screen replacement is one of the more manageable home maintenance tasks, but only if you know what you're buying, how to measure correctly, and when the frame condition means a screen replacement alone won't solve the problem. This guide covers all of it.
Not all sliding door screens are the same product, and the differences matter more in Calgary's conditions than most product descriptions acknowledge.
Fiberglass is the most common residential screen mesh and the material in most factory-installed screens on Calgary patio doors. It's flexible, resistant to denting, and inexpensive. The weave is tight enough to exclude mosquitoes and most flying insects while allowing reasonable airflow.
The weakness in Calgary's context is UV degradation. Calgary's elevation reduces atmospheric UV filtering, and fiberglass mesh that might last 8 – 10 years in a coastal city can show brittleness and weave breakdown in 5 – 7 years with significant south or west sun exposure. When fiberglass mesh deteriorates, it tears easily at the frame edges and becomes rigid rather than flexible.
Aluminum mesh is more durable than fiberglass and holds its shape better over time. It resists the UV degradation that limits fiberglass lifespan and won't become brittle. The tradeoff is that aluminum mesh can dent or crease permanently from impact — a paw swipe from a larger dog, a child pushing on it, or any direct contact leaves a visible mark that fiberglass would simply flex and recover from.
Aluminum is a better specification for screens that will get a lot of sun exposure on south and west-facing patio doors in Calgary. For doors with children or pets, the denting susceptibility is a meaningful consideration against it.
Pet-resistant screens use a heavier polyester or vinyl-coated fiberglass mesh that's significantly stronger than standard fiberglass. The weave is tighter and the individual strands are heavier gauge, making it much harder for claws to tear through. A medium-sized dog or an assertive cat that regularly presses against or paws at the screen is the target use case.
Pet-resistant screens cost more than standard fiberglass — typically $30 – $60 more for a replacement screen in a standard double door size — but they're the only realistic choice for homes where pets have already destroyed one or more standard screens. Standard fiberglass replaced in a pet household is a screen replaced again within a season.
Solar screen mesh uses a tighter, denser weave that reduces the amount of UV radiation and solar heat that passes through the screen. For south and west-facing patio doors in Calgary where summer afternoon sun creates significant heat gain in the adjacent living space, a solar screen reduces that gain while still allowing ventilation.
The tradeoff is reduced visibility from inside looking out, and significantly reduced visibility from outside looking in — which is sometimes a feature for ground-floor privacy. Airflow is also reduced compared to standard mesh. Solar screens are a specialized product appropriate for specific situations rather than a general replacement option.
Retractable screens mount on a track system and retract into a housing when not in use, rather than being a permanent frame that sits in front of the door. They're cleaner aesthetically, allow the full glass panel to be visible when the screen is retracted, and avoid the screen frame interfering with the door opening width.
The tradeoff is complexity and cost. Retractable screen systems run $300 – $800 installed depending on configuration, compared to $80 – $250 for a standard replacement screen. The retractable mechanism is also a point of potential failure that a fixed frame screen doesn't have. For homeowners who want screens seasonally but value the aesthetics of a screen-free appearance in winter, retractable systems are a worthwhile consideration.
Most screen failures are obvious, but a few are worth knowing to catch earlier rather than later.
Torn or holed mesh: Even small holes in the screen mesh are ineffective against insects. Mosquitoes specifically need only a small gap to enter. A screen with any hole larger than 1 – 2mm is a compromised screen from a pest exclusion standpoint.
Mesh pulling away from the spline channel: The screen mesh is held in the frame by a rubber or vinyl spline pressed into a channel around the perimeter of the frame. When the spline dries out or shrinks — accelerated by Calgary's UV environment — the mesh begins pulling away from the frame edges. A screen with mesh gaps at the corners or along the bottom edge is no longer sealing the opening.
Frame bent or bowed: A screen frame that's bent, bowed, or won't sit flat in the door track doesn't seal the opening and doesn't slide smoothly. Minor bends can sometimes be carefully straightened, but a significantly deformed frame needs replacement rather than repair.
Screen roller failure: Sliding screens run on small rollers at the top and bottom of the frame that allow them to slide in the track. When these rollers wear or break, the screen drags, sticks, or comes off the track. Replacement rollers are available and are sometimes a viable repair if the frame and mesh are otherwise in good condition.
UV degradation: Fiberglass mesh that's become stiff, brittle, or starts tearing in normal handling rather than under impact has reached end of life. This typically presents as small tears appearing along the frame edges where the mesh contacts the spline channel.
Getting the measurement right before ordering or purchasing a replacement screen is the most important step in the process. A screen that's 1/4 inch too wide won't fit in the track. One that's 1/4 inch too narrow will rattle and won't seal the opening.
Measure the opening, not the existing screen. If the existing screen is damaged, it may have bent or deformed, making it an unreliable measurement source. Measure the actual track opening your screen needs to fit into.
Width: Measure from the inside of one vertical track channel to the inside of the other. Take this measurement at the top, middle, and bottom of the opening — they should be identical, but older frames can be slightly out of square.
Height: Measure from the inside of the bottom track to the inside of the top track or header. Take this at the left, center, and right of the opening.
Account for the tension fit: Most standard sliding screen frames are sized to be slightly larger than the measured opening — typically 1/16 to 1/8 inch on each dimension — so they fit snugly in the track with some tension rather than rattling. If you're ordering a custom-built screen, your supplier will account for this. If you're buying a stock size, match as closely as possible and choose the slightly larger rather than slightly smaller option.
Write down both dimensions before you go anywhere. Width x height is the universal way screen sizes are quoted. Bring the old screen if you can — even a damaged screen gives the supplier a physical reference for the frame profile, roller type, and spline size.
Sliding door screen replacement falls into two distinct DIY categories that are worth understanding separately.
If your screen frame is intact but the mesh is damaged, or if you have a replacement frame that fits your door, swapping the full screen in and out is straightforward. Screens slide in and out of their tracks — typically by tilting the frame to compress the tension, lifting out of the bottom track, and then removing from the top. Installation is the reverse.
This requires no tools, no technical knowledge, and takes under five minutes once you have the correct replacement. The challenge is sourcing a replacement frame that fits your specific track profile, which is where most homeowners run into difficulty. Stock sizes at hardware stores may not match your door's track dimensions exactly. Custom-built replacement screens from a glass and door supplier are made to your measured dimensions and are the more reliable path to a proper fit.
If the frame is in good condition but the mesh is torn, re-screening replaces just the mesh and spline in the existing frame. This is a genuinely DIY-accessible task with the right tools.
What you need: replacement screen mesh (in the correct material for your application), new rubber or vinyl spline in the correct diameter for your frame's spline channel, a spline roller tool, a utility knife, and a flat work surface.
The process: remove the old spline from the channel (it presses or pulls out), discard the old mesh, cut new mesh 2 – 3 inches larger than the frame on each side, lay the mesh over the frame with the overlap distributed evenly, use the spline roller to press new spline into the channel over the mesh (working one side at a time, keeping tension in the mesh as you go), trim the excess mesh flush with the outside edge of the spline channel using a utility knife.
The most common DIY re-screening mistakes: choosing the wrong spline diameter (spline that's too thin won't hold the mesh; too thick won't press into the channel), not maintaining consistent mesh tension while pressing the spline (resulting in a wrinkled or loose screen), and using a utility knife that's not sharp enough to trim cleanly (tears the mesh rather than cutting it).
Spline diameter: measure your existing spline before buying replacement. Common residential sizes are 0.140" (3.5mm) and 0.175" (4.5mm). Using the wrong size is the most frequent re-screening error.
Professional screen replacement or re-screening is the better choice when the frame is also damaged and needs straightening or replacement, when the door's track system needs cleaning or adjustment for the screen to slide properly, or when the door has multiple components that need attention alongside the screen.
If your patio door has a stuck or difficult sliding panel, worn rollers, a failed lock, or weatherstripping that needs attention, a professional service call that addresses everything is more efficient than DIY screen work followed by a separate service call for the door components. Our patio door repair page covers what a comprehensive patio door service visit typically includes.
Stock replacement screen frame (hardware store, standard size)
$40 – $120 depending on size and screen type
Custom-built replacement screen frame (measured to your door)
$80 – $200 depending on size and mesh type
Pet-resistant mesh upgrade on custom screen
Add $30 – $60 over standard fiberglass
Solar screen mesh upgrade
Add $40 – $80 over standard fiberglass
Professional re-screening of existing frame (mesh and spline replacement)
$60 – $120 parts and labour depending on door size
Professional replacement screen supply and installation
$100 – $220 for a standard patio door screen including parts and labour
Retractable screen system, professionally installed
$300 – $800 depending on door width and system type
Screen roller replacement (if screen is dragging but frame is intact)
$40 – $80 parts and labour
DIY re-screening materials only
$20 – $50 for mesh and spline on a standard patio door size
The cost difference between a stock hardware store screen and a custom-built replacement from a door supplier is typically $40 – $80 for a standard single patio door. The custom-built screen fits correctly, uses the right frame profile for your track, and is built with the mesh type you specify. For most homeowners, the modest premium over the stock size option is worth the proper fit.
A few Calgary-specific factors are worth weighing when choosing replacement screen material and frame construction.
UV durability is a higher priority here than in most Canadian cities. As noted earlier, Calgary's elevation and sun exposure accelerates fiberglass mesh degradation. If your patio door faces south or west and the existing screen has failed from UV brittleness rather than physical damage, upgrading to aluminum mesh or a higher-grade fiberglass formulation at replacement is a practical choice. The cost premium is modest against the extended lifespan.
Spline selection for temperature range. The rubber or vinyl spline that holds mesh in the frame channel needs to maintain flexibility through Calgary's temperature extremes. Budget vinyl spline can harden and crack at sustained temperatures below -25°C. If you're DIY re-screening, choose a rubber spline rather than vinyl for better cold-weather performance.
Screen storage in winter. Sliding door screens are typically removed and stored in most Calgary homes during the winter months — the screen isn't needed for ventilation and exposure to road salt spray and freeze-thaw cycling through winter accelerates frame and mesh degradation. If you're investing in a quality pet-resistant or solar screen, removing and storing it from November through April significantly extends its lifespan.
Track cleaning before screen reinstallation. Calgary winters deposit salt, sand, and debris in door tracks. Before reinstalling or installing a new screen in spring, clean the track channels thoroughly. A screen installed in a debris-filled track will drag, wear its rollers faster, and be harder to operate through the season.
A replacement screen solves a screen problem. If the underlying track or door frame has issues, a new screen will inherit those issues immediately.
Before buying a replacement screen, check:
Track condition: the screen track channel should be clean, undamaged, and continuous. A bent or partially blocked track channel means a new screen will bind or jump the track in the same location the old one did.
Screen rollers on the door itself: the screen frame rides in a track and is guided by rollers at the top of the door panel (on some configurations, also at the bottom). If these rollers are worn or broken, a new screen frame won't slide any better than the old one.
Frame square: if the door frame opening is visibly out of square — wider at the top than bottom, or the header is visibly bowed — a custom screen will need to be built to match the out-of-square opening. A standard square replacement frame won't seat correctly.
Door panel rollers and alignment: if the sliding glass door panel itself is running stiffly or unevenly, the screen track alignment may be affected. A door panel that's dropped due to worn rollers can misalign the screen track relative to where it should be. Addressing the door panel roller condition before replacing the screen gives the screen the best operating environment. Our patio door roller replacement page covers what's involved when door panel rollers need attention alongside other door work.
Lifespan depends heavily on mesh material, sun exposure, pet use, and whether the screen is stored through winter.
Standard fiberglass mesh, south or west facing, left in year-round: 4 – 7 years before UV degradation becomes significant.
Standard fiberglass mesh, north or east facing, stored in winter: 8 – 12 years.
Aluminum mesh, any exposure, stored in winter: 10 – 15 years.
Pet-resistant polyester mesh: 7 – 12 years depending on pet intensity and UV exposure.
Retractable screen system (mechanism): 8 – 15 years for the mechanism; mesh replacement within the system is possible when needed.
The single most impactful factor for extending screen life in Calgary is winter storage. A screen that's removed in November and reinstalled in April avoids 5 – 6 months of freeze-thaw cycling, UV exposure at shoulder-season angles, and contact with road salt moisture that accumulates in tracks through winter.
Whether you need a custom replacement screen built to your door's measurements, re-screening of an existing frame in the mesh type that suits your use, or a full patio door service visit that addresses the screen alongside rollers, tracks, and weatherstripping, C Town Doors handles patio door and sliding door work across Calgary and surrounding communities including Airdrie, Cochrane, Chestermere, and Okotoks.
Call (403) 668-6686 or contact us online to ask about screen replacement, get a quote on a custom-built screen, or book a patio door service visit that addresses the full door system.
A custom-built replacement screen for a standard patio door runs $80 – $200 professionally supplied and installed. Stock-size hardware store screens run $40 – $120 but may not match your door's track profile exactly. Professional re-screening of an existing frame (mesh and spline replacement only) runs $60 – $120. Retractable screen systems run $300 – $800 installed.
Yes, for both full frame replacement and re-screening of an existing frame. Full frame replacement requires no tools — the screen slides in and out of the track. Re-screening requires a spline roller tool, replacement mesh, and correct-diameter spline. The most common DIY mistakes are using the wrong spline diameter and not maintaining mesh tension while rolling the spline into the channel.
Measure the opening your screen needs to fit into — width from the inside of one vertical track to the other, height from the inside of the bottom track to the inside of the top. Take measurements at multiple points on each dimension to identify any out-of-square condition. Bring the old screen to your supplier if possible as a physical reference for frame profile and roller type.
For standard use, aluminum mesh outperforms fiberglass in Calgary's UV environment and lasts longer on sun-facing exposures. For homes with dogs or cats that press against or paw at the screen, pet-resistant polyester mesh is the only realistic choice. For south-facing doors where afternoon heat gain is a concern, solar screen mesh reduces heat transfer while maintaining ventilation.
The most common causes are worn or broken rollers on the screen frame, a track channel that's debris-filled or damaged, or a screen frame that's bent and no longer sits correctly in the track. Check the screen rollers first — they're small and often the point of failure on older screens. If the rollers are intact and the track is clean, the frame may be bent beyond the point where it tracks correctly.
Yes. Removing the screen from November through April protects it from UV degradation at shoulder-season sun angles, freeze-thaw damage to the frame and spline, road salt accumulation in the track, and physical damage from snow clearing near the door. Screens that are stored through Calgary winters consistently last significantly longer than those left in year-round.
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See why Calgary homeowners and businesses choose C Town Doors. From fast service to quality workmanship, our team is proud to deliver results that speak for themselves. Here's what our customers have to say.
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Awesome company. Fast and decent pricing and the phone person and Jesse the tech was friendly. This is the second time I’ve used them and the last time they came on a Saturday and replaced my broken springs quickly as my cars were stuck inside and we needed to get out.
Dean P.
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With an emergency service late night call to repair our garage door, Mr. Gal responded to our phone call immediately and was at our country house on time as promised. His work was excellent and professional. I recommend C Town Doors.
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Highly recommend this company. We replaced everything, our garage door, rails, weather stripping, and motor with them. Everyone we talked to or did work at our house were professional and efficient, most importantly highly skilled.
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