Our services
GRP sectional water tanks: supply and installation
We supply and install GRP (fibreglass) sectional tanks for drinking water and fire water — WRAS-approved panels bolted together on site, sized to fit rooftops, plant rooms and basements.
WRAS-approved panels
For drinking water and fire water
About the service
Light, rust-free tanks that fit where others can’t
We supply and install GRP sectional tanks: hot-pressed glass-reinforced panels bolted together on site into drinking-water and fire-water tanks of almost any size or shape. Each panel is compression-moulded from sheet moulding compound in a heated steel die, which is why the same panel carries WRAS approval for contact with drinking water up to 50 °C.
- WRAS approved panel material for drinking water, built to EN 13280 with CE and TSE conformity marks.
- About 50 years expected life — no corrosion, no painting and no internal lining.
- Opaque, UV-resistant panels keep light out, so algae cannot grow.
- Built on a 1 m grid, 1 m to 5 m high in 0.5 m steps — rectangular, L-shaped, U-shaped or around a column, and it can be split into two compartments so one side is cleaned while the other stays in service.
- Insulated panels available, with CFC-free polyurethane: 0.02 W/m·K through the wall against 43 for a steel panel — for rooftop tanks in hot weather.
- Panels carried by hand, so most tanks need no crane and fit where access is tight.
- Can be enlarged, relocated or partitioned later; panels are non-conductive and non-magnetic.
Ground-level tanks sit on a hot-dip galvanised base over concrete plinths; plant-room and basement tanks sit flat on a level slab. We pipe up, fill and leak-test every tank before handover. Download the GRP sectional tanks datasheet (PDF).
Reference projects
- 63 GRP fire-fighting water tanks at the Iconic Tower, New Administrative Capital — 2023
- Full GRP tank material submittal for a data-centre project
Need a steel tank for large capacities? See our GLS bolted tanks.
GRP sectional tanks
Standard panels, heights from 1 to 5 m
Wall panels come in 1×1, 1×1.5 and 1×2 m, so the tank fits almost any plan on a 1 m grid, from 1 to 5 m high in 0.5 m steps. Lower rings use thicker panels, and the tank is braced with roof poles, external brackets and internal tie-rods.
Scope of work
From design to handover
Every stage is engineer-supervised and documented.
01
Selection and design
We size the tank to the room and the required capacity, pick the panel grade for each height, and prepare layout and base drawings.
02
Supply
WRAS-approved panels, sealing tape, stainless steel bolts, tie-rods and all fittings.
03
Assembly on site
Panels are carried in by hand and bolted together — no crane needed, even in basements.
04
Testing and handover
Hydrotest and handover of the operation and maintenance file.
FAQ
Questions about GRP tanks
What is the difference between GLS, epoxy and GRP tanks?
GLS has the longest life and suits potable water, wastewater and brine; epoxy-coated steel costs less and suits industrial and agricultural use; GRP is lighter and insulated, and suits rooftops. We recommend a type once we know the water, capacity and site.
What is a GRP sectional tank?
A GRP sectional tank is built on site from hot-pressed fibreglass panels on a 1 m grid, bolted together with sealing tape and braced with stainless steel tie rods. Heights run from 1 m to 5 m in 0.5 m steps, so the tank is sized to the room rather than the other way round.
Is GRP safe for drinking water?
Yes. The panel material is WRAS approved for contact with drinking water up to 50 °C, and tanks are built to EN 13280 with CE and TSE conformity marks. The panels are opaque and UV-resistant, so light cannot get in and algae cannot grow.
Can you install a GRP tank on a roof or in a basement?
Yes. GRP panels are light enough to be carried by hand, so most tanks need no crane and can be taken up stairs or through a doorway. Insulated panels are available for rooftop tanks in hot weather, and internally flanged tanks sit flat on a slab where headroom is short.
Do you supply GRP tanks only, or install them too?
Both. We supply the tank and erect it: plinths and galvanised base, panels and tie rods, roof, ladders and manhole, then piping, filling and a leak test before handover. We also repair and extend existing GRP tanks, whoever supplied them.