Stage 01Week 1
Survey & setting out

Ground investigation, levels, drainage runs and machine access confirmed on site. The pool is set out from the survey with profile boards, string lines and a laser datum before a spade goes in.
1:50 set-out · trial pits · laser datum
Stage 02Weeks 2—4
Design & engineering

Hydraulic calculations, structural drawings and a finish schedule, issued as one buildable set. Planning and party-wall consents go in wherever the site needs them.
6 h turnover · 1.5 m depth · C35/45
Stage 03Week 5
Excavation & shoring

Spoil leaves the garden by machine and barrow, with the ground held at level from the first pass. The sides are shored and battered wherever the soil asks for it.
Spoil removed · walls battered 1:1
Stage 04Weeks 6—7
Steel & shell pour

Reinforcement is inspected against the schedule and photographed before the pour. Concrete is placed as one continuous operation wherever access allows, then vibrated and finished by hand.
A393 mesh · 250 mm walls · single pour
Stage 05Week 7
Curing & shell sign-off

The shell cures under sheeting for seven days while the levels are checked corner to corner. Any honeycombing is cut back and made good before the tank goes near water.
7-day cure · levels to ±3 mm
Stage 06Weeks 8—9
Waterproofing

Two coats of cementitious waterproofing, reinforced at every corner, pipe penetration and light niche, then a bonded membrane across the whole tank.
2-coat system · 1.5 mm cured
Stage 07Week 9
72-hour flood test

The tank stands full for three days with the level marked and photographed. Nothing is tiled until the water holds and that reading is signed off.
72 h standing test · under 2 mm loss
Stage 08Weeks 9—10
Mosaic & waterline

Hand-laid glass mosaic on mesh, set in adhesive with full coverage and cut tight at the waterline, at every skimmer, step and light fitting.
20 mm glass mosaic · epoxy grout
Stage 09Week 10
Coping, deck & surrounds

Stone coping bedded level to the waterline, with the deck falls set away from the pool so nothing runs back in. Expansion joints line up with the paving grid.
30 mm coping · deck falls 1:80
Stage 10Weeks 11—12
Plant room & hydraulics

Rigid pipework, glass media filtration, UV secondary and a heat pump, all labelled and balanced to the design turnover. The schematic stays with the pool.
6 h turnover · UV secondary
Stage 11Week 12
Commissioning & balance

Flow rates, chemistry, heating curve and lighting scenes are set and recorded, then the controller is handed over with every schedule saved to it.
Balanced · scenes set · logged
Stage 12Week 13
First water & handover

Water treated and tested, cover and lighting on one controller, then a full walkthrough with chemical training, certification and a 25-year structural warranty.
Handover pack · 25-year warranty