Ainsa Drainage Channel - Pool Surround Water Evacuation
Ainsa Drainage Channel: getting rid of runoff before it returns to the pool
Everything that stays on the pool surround ends up in the water: sand, leaves, sunscreen residue and hose-down water off the floor. The Ainsa channel covers the perimeter run with concrete pieces of just 5.85 kg, in 40 × 20 and 20 × 20 cm formats, that carry away that runoff and keep the area around the pool dry and walkable.
✅ Key advantages
Protects the pool water: intercepts runoff from the surround and reduces chlorine consumption and filter load.
Two formats, 40 and 20 cm: the long one for straight runs and the short one to fit corners and junctions without disc-cutting.
5.85 kg per piece: lifts with one hand to clean the channel, yet stays heavy enough not to shift underfoot.
Matches the rest of the range: the same tones as the pool coping and shower tray in the series.
Three colours: white, cream and pirineos.
Weather-resistant concrete: withstands freeze-thaw, sun and continuous contact with chlorinated or salt water.
🏗️ Recommended uses
Perimeter drainage channel on the pool surround.
Cutting off runoff between lawn or garden and the pool edge.
Water collection on paved terraces and patios.
Linear drainage next to outdoor showers and rinse-off areas.
Fitting corners and channel ends with the 20 × 20 cm format.
📋 Technical specifications
Material: precast concrete.
Piece type: drainage piece.
Dimensions: 40 × 20 × 3.5 cm and 20 × 20 × 3.5 cm.
Unit weight (40 × 20 cm): 5.85 kg.
Coverage (40 cm): 2.5 units per linear metre of channel.
Colours: white, cream and pirineos.
Units per pallet (40 × 20 cm): 78 units.
Full pallet weight: 472 kg.
Use: outdoor, at the waterline.
🧰 Installation
Build the channel with a longitudinal slope of 0.5-1% toward the drain and test the outlet with a hose before covering anything.
Leave the surround paving 5-10 mm above the channel's lip; if it's flush, water jumps over it and keeps heading for the pool.
Bed the pieces onto the channel's flanges, checking they don't rock or press against the wall.
Combine the 40 and 20 cm formats to close off the whole run without having to disc-cut pieces.
Leave 3-5 mm joints between pieces, which also serve as water inlets.
Seal the joint with the paving using polyurethane and place an expansion joint every 4-5 m.
📦 Available formats
Unit of 40 × 20 × 3.5 cm in white, cream or pirineos.
Unit of 20 × 20 × 3.5 cm in white, cream or pirineos.
Pallet of 78 units of the 40 × 20 cm format (472 kg).
💡 Professional tip: a channel is set out with a hose in hand, not a tape measure. Before covering it, pour water at the farthest point and check that it runs all the way to the drain: if it pools, you can still correct the slope, but not afterward. The other common mistake is setting the paving flush with the channel's lip for a "clean" look; the result is that water passes over the top and the channel only catches what falls straight into it. Leave it 5-10 mm lower. And calculate pieces per linear metre, not per square metre: the 40 cm format works out to 2.5 units per metre, and it pays to combine it with the 20 cm pieces to close corners without cutting, since a disc cut on a 3.5 cm piece leaves an edge that chips by the first winter.
