Pool Structure & Liner Construction Work
What actually happens underneath and around a liner when we prepare a pool for a new one.
Why structure matters to a liner
A vinyl liner is only as good as the wall, floor and cove underneath it. Before any new liner goes in, we look past the surface at the structural elements that the old liner had been hiding — and that's really the "construction" side of our work. We're not a ground-up pool builder; we work on the liner, the wall panel surfaces it sits against, the cove at the floor-to-wall joint, the coping that caps the edge, and the step units built into the pool.
On most jobs this means smoothing a rough patch in the cove, checking that wall panels haven't shifted, and confirming skimmer and return fittings are seated properly before the new liner is cut and fitted around them. On the premium renovation package, it extends to coping touch-ups and step-edge refinishing, so the finished pool looks consistent from the waterline up.
Every one of these structural checks happens during the inspection visit, not as a surprise on installation day. If your pool needs more than a liner swap, you'll know the scope and the price before anything is scheduled.
Materials & equipment we use
GAUGE
20–28 mil vinyl
Standard liners run around 20 mil; the textured option used in the renovation package runs heavier, closer to 28 mil.
PATTERN
Textured & smooth finishes
We bring physical swatches to the inspection visit so you can compare pattern and texture in person, not from a screen.
COVE & FLOOR
Cove patch compound
Used to smooth the floor-to-wall joint before a new liner is fitted, so the liner isn't stretched over an uneven edge.
COPING & STEPS
Coping caps & step-edge kits
Used only within the renovation package, matched to the pool's existing edge profile where possible.
We also carry basic hand tools for fitting checks — seam rollers, bead tools and a laser level for measuring depth changes accurately — so the dimensions recorded at the inspection visit match what the installation crew works from on the day.
Who this work suits
This page is most relevant to homeowners whose inspection visit turned up more than a straightforward liner swap — a cove that needs patching, coping that has started to crack, or step edges that have gone rough underfoot. It's also useful background if you're trying to understand why one quote came in higher than a neighbour's: the structural prep work behind the liner is usually the reason.
If your pool is in generally sound shape and the liner itself is simply old or faded, the standard replacement covers you without any of the additional structural items described here.
Owners renovating an older pool often ask whether the whole structure needs attention. In most cases the answer is no — vinyl-liner pools in the Niagara region typically hold their shape well for decades, and the work described on this page addresses the specific areas around the liner rather than the pool shell as a whole.
What we don't do
To be clear about scope: Rivermark Pools does not excavate new pools, pour new concrete shells, or build pool structures from the ground up. We also don't work on fibreglass or vinyl-over-concrete hybrid shells, and we don't install pool heaters, powered safety covers or filtration equipment as a standalone service.
Our structural work is restricted to what directly supports a liner — cove, wall-panel surface condition, coping and step edges within the scope of a liner replacement or renovation project. If a pool needs work beyond that, we'll say so plainly at the inspection visit rather than taking on a job outside what we do well.
If you need ground-up construction or equipment installation, we're happy to point you toward the kind of contractor that specializes in it — we'd rather make an honest referral than stretch outside our trade.
Not sure if your pool needs structural work? An inspection visit will tell you.