Learn why liner thickness matters and how Covertech's 30mil liners provide superior protection and longevity.
Vinyl liner thickness is measured in mils — thousandths of an inch — and it directly impacts durability, puncture resistance, and lifespan. Our in-ground liners feature 30mil thickness with cold-crack resistance, while above-ground liners use 18mil material optimized for their specific installation requirements.
Thicker liners resist punctures, tears, and UV degradation better than thinner alternatives. A 30mil liner is noticeably more substantial to the touch and provides a reassuring level of resilience against everyday hazards — pool toys, accidental footwear contact, or pool cleaning equipment. This added thickness is especially valuable around steps, benches, and sun decks where the liner sees the most wear.
However, thickness alone doesn't determine quality. Our liners are manufactured from 100% anti-bacterial virgin resin — never recycled materials — ensuring consistent quality, color vibrancy, and structural integrity throughout. Recycled materials can introduce inconsistencies, weak spots, and color variations that compromise both appearance and longevity.
Our proprietary AquaShimmer technology is embedded directly into the liner material during manufacturing, not printed on the surface. This means the shimmering effect is durable and won't fade or peel away over time. The result is a liner that maintains its beauty and structural integrity for decades under proper water chemistry maintenance.
Our 25-year warranty on in-ground liners reflects our confidence in this superior construction. No other liner manufacturer offers this level of coverage, which speaks directly to the materials, engineering, and quality control that goes into every Covertech liner manufactured right here in Canada since 1987.