
FRP Cellar Cost: What to Include in an Underground Storage Quote
FRP cellar cost is easier to evaluate when the quotation clearly separates the underground storage shell from freight, site work and interior fit-out. A single
16′ × 40′ | Depth 3′ 8″ to 8′ 6″
≈ 45 m³
≈ 850 kg
1 pool / 40′HQ · mixed models OK
T40
shell outline — wall thickness, skimmer and return positions
| ✔ Model | |
| ✔ Dimensions | |
| ✔ Depth | 3′ 9.5″ (Shallow) to 6′ 2.5″ (Deep) |
| ✔ Material | Hand-laid FRP with Vinyl-ester resin |
| ✔ MOQ | 1 x 40′HQ (Mixed models allowed) |
| ✔ Port | FOB Tianjin/Qingdao (TBC) |
shells are hand-laid in our own FRP workshop — no outsourced lamination, full material traceability batch by batch.
| Step | Process | Control Point |
|---|---|---|
| 01 | Mould preparation & release | Mould cleaned, waxed and PVA-sealed before every lay-up |
| 02 | Gelcoat spray-up | ISO-NPG gelcoat to 0.5–0.8 mm, colour batch recorded |
| 03 | Vinyl-ester barrier coat | Osmotic-blister barrier applied over cured gelcoat |
| 04 | Hand lay-up of laminate | Chopped strand mat + woven roving, hand-rolled to remove air |
| 05 | Core & structural rib bonding | PU core / ribs bonded for stiffness and point-load resistance |
| 06 | Demould, water test & QC | Dimensions verified, 24 h water test, batch traceability file issued |
T40
Hand-laid FRP build-up from the outside gelcoat inwards. Total wall section ≈ 8–12 mm.
| # | Layer | Thickness | Function |
|---|---|---|---|
| 1 | ISO-NPG UV-stable gelcoat | 0.5–0.8 mm | Colour-fast, water-tight outer surface |
| 2 | Vinyl-ester barrier coat | ~0.6 mm | Osmotic-blister resistance |
| 3 | Chopped strand mat (450 g/m²) | ~1.0 mm | Resin-rich bedding against the barrier |
| 4 | Woven roving (600 g/m²) | ~1.2 mm | Longitudinal tensile strength |
| 5 | Core / structural rib | 3–8 mm | Stiffness and point-load resistance |
| 6 | Woven roving (800 g/m²) | ~1.2 mm | Overall hull rigidity |
| 7 | Inner skin mat (300 g/m²) | ~0.7 mm | Smooth inner surface, chemical resistance |
Sourcing a fiberglass pool mold? Here is what buyers ask us most about lead time, MOQ, custom tooling and shipping.
Standard lead time is 25–35 working days after deposit and design confirmation, plus ocean transit. Repeat and mixed-model orders are scheduled by production slot — ask your account manager for the current slot.
Our MOQ is one 40′HQ container. Sizes can be mixed within one order.
Yes. We build custom fiberglass molds from your drawings or reference pool — CAD review, plug and mold fabrication, and sample approval before mass production. Tooling lead time is quoted per project.
We ship FOB Tianjin / Qingdao (TBC). Other Chinese ports can be arranged on request, and EXW / CIF terms are available.
Request the current model drawing to confirm overall dimensions, depth profile and built-in features before selecting this pool shell. Review the layout against the available site and confirm which equipment and accessories are included in the quotation.
For a project quotation, provide your destination, preferred model, quantity and delivery requirements. Ask our team to confirm the supply scope and packing arrangement for the selected configuration.

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