Pool construction and renovation

Problem

Fibreglass pool problems: osmosis blisters, gelcoat wear and cracks

Blisters on a fibreglass pool are usually osmotic: water passes through the gelcoat and reacts with the laminate behind it. Hairline or spider cracks often stay in the gelcoat, while bulging walls or cracks through the laminate point to structural stress. Isolated damage can usually be repaired locally, widespread osmosis may need the surface stripped and relaminated, and a fibreglass pool should only be drained under professional supervision.

Last reviewed 24 Oct 2026

Construction

Pool construction types in the UAE and what they mean for repairs

Most UAE pools are concrete shells finished with tiles, mosaic or plaster, but fibreglass, vinyl liner and stainless steel pools also exist, and any of them can be a skimmer pool or an overflow pool with a balance tank. The construction type decides which repairs are possible, which materials are compatible and which specialist has the right experience.

Last reviewed 24 Oct 2026

How it works

Pool waterproofing: what the membrane does and why it matters before re-tiling

Tiling manufacturers expect a pool to be a watertight concrete structure, and their pool systems add a flexible waterproofing membrane between the levelled shell and the tile adhesive. Before re-tiling, the shell should be tested for watertightness and any cracks investigated, because leaks are very hard to find once the new finish is on. Re-tiling over a failed membrane or a leaking shell rarely solves the problem.

Last reviewed 24 Oct 2026

Comparison

Resurfacing a concrete pool: tiles, mosaic, plaster or pebble

Tiles, glass mosaic, cement-based plaster and pebble or quartz aggregate finishes all go onto a sound concrete shell, and none of them fixes a shell that leaks. Tiles and mosaic depend on a watertight, flat substrate and pool-rated adhesive and grout; plaster and pebble finishes depend on a careful 28-day start-up after filling. Choose the finish after the shell, waterproofing and water chemistry have been assessed.

Last reviewed 24 Oct 2026

Problem

Vinyl liner pools: wrinkles, tears, fading and when to replace the liner

Small tears in a vinyl liner can usually be patched, and minor wrinkles can sometimes be worked out once their cause is fixed. Deep creases, a liner slipping out of its track, brittle faded vinyl, repeated tears or a liner that was the wrong size from the start make replacement the realistic option. Never drain a liner pool completely: manufacturers warn that it can shrink and crack the liner.

Last reviewed 24 Oct 2026

Guide

When does a full pool renovation make sense?

Repair makes sense when a fault is local and its cause is known. A renovation makes sense when failures are widespread, when the same systems keep failing, or when the pool has to be emptied anyway and several systems (finish, waterproofing, pipework, equipment) are near the end of their life. A specialist inspection, and leak detection where water is being lost, should come before the decision.

Last reviewed 24 Oct 2026