A faded, cracked, or leaking liner is a pool renovation most homeowners face at least once. Swimpool 360 replaces inground and above-ground pool liners across Toronto and the GTA. Wide selection of patterns and thicknesses. Precise field measurements for a wrinkle-free fit. Most replacements complete in 1-2 days.
Swimpool 360 supplies and installs 20-mil and 27-mil vinyl liners from leading Canadian manufacturers. The 20-mil liner is the standard choice - durable enough for most residential pools in Ontario and the most cost-effective option. The 27-mil liner is 35% thicker, offering greater resistance to punctures from pool toys, pets, and debris, and is recommended for pools with young children or frequent heavy use. As a trusted vinyl pool liner GTA installer, we deliver precise field measurements and wrinkle-free installations every time.
Both options come in dozens of patterns including solid blues, granite shimmer, tile print, and beaded designs. Pattern selection does not affect price significantly - the thickness and pool size drive the cost, not the colour choice. When combined with other pool renovation services, a new liner can transform the entire look of your backyard pool at a fraction of the cost of a full rebuild.
Not every liner issue requires replacement. Small tears under 3cm, punctures, and isolated leak sites can often be patched underwater for $150-$400 and provide several more seasons of service. We recommend patching when the liner is under 8 years old and in otherwise good condition — see our pool liner repair service for details on what underwater patching covers. Replacement becomes the better investment when the liner is faded and brittle, showing multiple leak sites, wrinkling at the waterline, or losing elasticity around fittings.
A liner that has slipped out of its bead track more than once, or that shows surface crazing across large areas, has reached end of life. Continuing to patch a failing liner costs more over time and still results in pool liner replacement within a season or two. We will inspect your liner on-site and give you an honest assessment - we will not recommend replacement if a repair will serve you well. Our approach reflects the standards recommended by the Pool and Hot Tub Council of Canada for liner assessment and replacement decisions.
We visit your pool to take precise field measurements of the pool shape, step configuration, return positions, and any irregular features. Liner is ordered to exact dimensions.
Complete removal of the existing vinyl liner. Old liner is rolled up and disposed of. The pool shell is left clean and ready for floor inspection before the new liner goes in.
Pool floor is inspected for erosion, soft spots, and shifting. Sand bottom pools are re-levelled and smoothed before the new liner is placed to ensure a tight, wrinkle-free fit.
Custom liner is hung in the bead track and vacuum-seated against the pool walls and floor. Fittings for returns, skimmer, and main drain are cut and sealed precisely.
Steel or polymer pool walls are inspected for corrosion or damage during liner removal. Fittings are checked for wear and gaskets are replaced as needed to ensure a watertight seal.
Pool is refilled and initial water chemistry is balanced to protect the new liner surface. Startup chemicals prevent staining and extend liner life. Most pools are swim-ready within 48 hours.
Free in-home measurement across Toronto and the GTA. Wide pattern selection. Most installs completed in 1-2 days. Swimpool 360 since 2010.
Liner replacement begins with a free in-home visit to field-measure your pool precisely. Pool shape, step configuration, return positions, and any irregularities are all captured before the liner is ordered. The pool liner cost Toronto and GTA homeowners pay for inground replacement ranges from $3,500-$7,000 depending on pool size, liner thickness, and complexity. The price includes draining, old liner removal, floor inspection and levelling sand repair if needed, the new liner, bead installation, vacuum seating, and water reconnection.
Above-ground liner replacements are less involved at $800-$1,800. We also inspect the pool walls, floor, and coping during replacement and flag any issues to address before the water goes back in. Timing matters: we schedule liner replacements from May through September to avoid cold temperatures that affect vinyl elasticity during installation. A cold liner will stretch inconsistently and is more likely to develop wrinkles or pull away from the bead track. To maintain your new liner's lifespan, our pool maintenance and service plans keep your water chemistry balanced season after season.
Vinyl pool liners in Ontario face conditions that warmer climates do not. The freeze-thaw cycle between October and April puts stress on the liner as it sits without water during winter. Liners that are not properly winterized - or pools that lose water after closing - are at risk of the liner shifting, becoming brittle, or lifting from the bead track. A liner that freezes while partially empty can crack along the fold lines, requiring emergency replacement in spring.
UV exposure is the other primary factor affecting liner longevity. Ontario's summer sun causes fading and oxidation of the vinyl surface over time, with south-facing pools experiencing noticeably faster fading than shaded ones. Choosing a liner with UV-inhibitor additives in the vinyl compound reduces this effect. Our liner suppliers produce liners specifically formulated for Canadian seasonal conditions, with enhanced flexibility at low temperatures and UV-resistant coatings. Proper water chemistry also plays a major role: low pH below 7.0 causes vinyl to become stiff and crack-prone, while high pH above 7.8 causes the liner to soften and stretch. Keeping pH in the 7.2-7.6 range extends liner life by years.
A new liner is a significant investment and the steps you take in the first season determine how many years it lasts. Knowing the pool liner replacement cost Ontario homeowners typically face — $3,500 to $7,000 for inground pools — reinforces why protecting that investment matters. Water chemistry is the single most important factor. Test your pool water at minimum twice weekly during the swim season. Keep pH between 7.2-7.6, total alkalinity between 100-150 ppm, and calcium hardness between 150-300 ppm. Low pH is particularly damaging to vinyl - even a few days below 7.0 can begin to degrade the plasticizers in the liner compound, causing it to stiffen and crack prematurely.
Avoid dragging sharp or metal objects across the liner surface, and keep pet claws away from the vinyl if possible. When brushing the pool walls, use a soft vinyl brush rather than a stainless steel bristle brush. Proper winterization is equally critical in Ontario's climate. Lower the water level correctly, add winter chemical treatment, use a winter cover that does not pool water directly on the liner surface, and install an air pillow to absorb ice expansion. These practices, combined with professional spring opening and fall closing services, routinely extend liner life from the average of 8-10 years to 12-15 years. For concrete or fiberglass pool owners, pool resurfacing is an alternative renovation worth exploring. For more context on what to expect from your full pool renovation investment, visit our main renovation overview page.
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