Metallic Epoxy Pool Surrounds Saudi Arabia — R12 Barefoot Safety, No Algae, Chlorine-Proof

Pool surrounds present unique substrate challenges. The concrete deck is typically exposed to continuous wetting and drying cycles that cause carbonation of the surface layer — creating a weak, powdery surface that must be identified and fully removed before any coating is applied. We survey the entire deck perimeter using a Schmidt hammer to measure surface hardness and identify any carbonated zones. Simultaneously, the drainage gradient of the entire pool deck is assessed: a minimum fall of 1:80 toward perimeter drains is required to prevent standing water pooling on a non-absorbent surface. Any areas with flat or reverse gradient must be corrected with a levelling compound before the epoxy system is applied.

Outdoor concrete slabs have a higher density of expansion joints than indoor floors due to the greater thermal movement from Saudi temperature extremes. Every expansion joint in the pool deck is mapped. Unlike indoor floors where rigid joint fillers are sometimes acceptable, outdoor pool surrounds require all expansion joints to be filled with a flexible polyurea joint compound that can compress and extend with the concrete movement. Bridging expansion joints with rigid epoxy will result in cracking at the joint line within one or two thermal cycles. Each joint is routed to a consistent width and depth before the flexible compound is injected and tooled flush.

The pool deck surface typically has three layers of contamination: carbonated laitance on the outermost surface, biological contamination (algae, sunscreen residue, pool chemical deposits) in the pores, and potentially old sealer or paint from previous maintenance attempts. We diamond grind the entire surface using outdoor-rated machines with scarifying attachments to cut through all three layers simultaneously, reaching clean, hard aggregate. The grind profile must reach CSP 3–4 — significantly more aggressive than standard indoor floor preparation — because the outdoor environment demands maximum adhesion to compensate for continuous environmental stress.

Pool surrounds are almost always damp in their substrate, even when the surface appears dry. Rising ground moisture from the subgrade, lateral seepage from the pool shell, and residual moisture from recent rainfall all mean that a standard moisture-sensitive epoxy primer is highly likely to fail in this environment. We use moisture-tolerant, penetrating epoxy primers that can cure in the presence of elevated substrate moisture. The primer is applied generously by roller, allowed to penetrate, and the excess back-rolled to prevent surface pooling. On pool decks with confirmed high moisture vapor emission, a two-coat moisture-mitigation primer system is used.

For pool surrounds specifically, the metallic color palette selection is technically informed rather than purely aesthetic. Dark metallic pigments — charcoals, deep bronzes, dark blues — absorb solar radiation and create surface temperatures that can cause thermal discomfort for bare feet and accelerate topcoat wear. We strongly advise lighter palettes — silvers, light blues, pearl whites, champagnes — that reflect a higher proportion of solar radiation. The resin is poured and distributed following the drainage gradients identified in Step 01, ensuring the self-leveling resin enhances rather than counteracts the designed water run-off direction.

Two full coats of aliphatic polyurethane are applied. While the first coat is still at its critical wet-film stage, a calibrated broadcast of rounded quartz aggregate is applied evenly across the entire surface using a hand-cranked spreader to ensure consistent coverage density. The aggregate particle size and shape is selected specifically for barefoot comfort: rounded grains of 0.4–0.8mm diameter provide Class C / R12 grip without the sharp, abrasive surface of angular aluminum oxide which would be unacceptable on a pool deck used by children. Once the first coat cures, the second aliphatic coat is applied, encapsulating the aggregate permanently and providing the full-thickness UV protection layer.