Pond covers — patented hexagonal floating cover technology

Why cover a pond

Four problems, one surface

Everything a floating cover does, it does at the waterline — the four problems below are where owners of ponds, lagoons, and reservoirs start.

Evaporation Open water loses depth to the sun all season. A tessellated surface cover suppresses evaporation where it happens — at the surface. How covers cut evaporation →
Algae & sunlight Sunlight drives algal growth. Blocking light at the waterline starves the bloom instead of chasing it with chemicals. The floating cover explained →
Odour & emissions Covering the surface reduces gas-phase emissions and odour escape from lagoons and process water. How hexagonal covers work →
Bird access Surface covers, spherical systems, netting, and habitat measures each change access differently — start with the site and target species. Compare bird-control options →

The products

Two ways to build the hex field

Hexprotect® AQUA

AWTT's pre-ballasted workhorse — one-piece moulded HDPE, smooth dome, NSF/ANSI food-grade option.
- 99 % coverage
- 130+ MPH wind
- 25+ yr design life
Hexprotect® AQUA in depth →
Hexofloat®

EuroCover's EU-manufactured hexagonal cover, built under AWTT design approval — short lead times inside the EU.
- 190 mm tile
- 75 MPH wind
- 3–6 week EU lead time
Hexofloat® in depth →

AWTT-patented Hexagonal modular NSF/ANSI food-grade option

What is a floating cover?

A floating cover is a buoyant surface placed on an open water body to reduce evaporation, suppress algae, contain odour, and retain heat. The hexagonal modular variant — invented and patented by AWTT — packs at 99% effective surface coverage (AWTT-published), deploys without anchors, and tolerates irregular shorelines. Read the full definition on /floating-cover.

Why pond-cover.com?

pond-cover.com is the technology-authority microsite for the patented hexagonal floating cover platform — covering the engineering, the patent history, and the deep product reference. For the commercial side — EU country pages, procurement guides, lead times, and quoting — visit eurocovers.eu.

Biological lagoon sludge is a different layer

A floating cover changes conditions at the water surface; it does not remove an accumulated bottom blanket. For biodegradable organic solids, the site now covers SediLogic Core and Maintain and the measurement-led sludge-reduction decision. Inert grit, silt, minerals, and debris remain a physical-removal problem.

Browse

Browse the technology

Eight entry points into the patented hexagonal floating cover platform — explainers, products, engineering heritage, and quotation.

Frequently asked questions

What is a hexagonal floating cover? #

A hexagonal floating cover is a modular self-ballasting tile that tessellates over a water body to suppress evaporation, block sunlight, and reduce gas-phase emissions. The original patent (Hexprotect®, AWTT, granted 2010) introduced the self-ballasting hexagonal geometry that became the technology category — it tessellates with near-zero gaps, dissipates wind load through tile-to-tile contact rather than anchoring, and self-fills to the design draft without continuous adjustment.

How is Hexprotect® AQUA different from generic copies? #

Hexprotect® AQUA is the AWTT-manufactured pre-ballasted variant — one-piece moulded HDPE with a taller wall, smooth dome, and no recessed surfaces. Copies typically diverge on shell thickness, plastic grade (recycled vs virgin HDPE), surface profile (pooling vs sheeting), and wall height (wind threshold). See /why-copies-fail for the engineering detail.

Who manufactures the hexagonal floating cover? #

The original Hexprotect® patent is held by AWTT (US). Hexprotect® AQUA is AWTT-manufactured at five facilities (Budapest, South Carolina, Harlingen, Mexico, Jebel Ali). Hexofloat® is manufactured by EuroCover in the EU under AWTT design approval — short EU lead times, REACH compliance. EU distribution and quotation across both variants is by EuroCover Water Systems (eurocovers.eu).

How long does a hexagonal floating cover last? #

Hexprotect® AQUA carries a 25+ year design life and a 10-year manufacturer warranty (AWTT-published). Hexofloat® carries a 15-year design life. Both variants are HDPE, UV-stabilised, and certified to operate across a −57 °C to +71 °C temperature range. The pre-ballasted geometry has no moving parts; the dominant failure mode is mechanical impact, not material fatigue.

What is the wind certification? #

Hexprotect® AQUA is certified to 130+ MPH (209+ km/h) sustained wind — verified by AWTT through field deployment and hurricane validation. Hexofloat® is certified to 75 MPH. Self-ballasting tile-to-tile interlock dissipates load without continuous anchoring; the load redistributes across the entire cover field, not concentrated at the edges as with continuous geomembrane covers.

Sources & further reading

The patented hexagonal floating cover platform is documented by the original manufacturer (AWTT) and cross-referenced here:

AWTT — Hexprotect® AQUA product reference (manufacturer source of truth for AQUA specs, certifications, lifecycle)
AWTT verification documentation hub (NSF/ANSI food-grade, wind certification, material compliance)
AWTT Budapest, Hungary manufacturing facility (default origin for EU shipments)
Hexprotect® patent history — engineering evolution from 2010 patent through the 2009 AQUA refinement to the 2022 Fortress variant
eurocovers.eu — commercial / regional / quotation sister site

By Pond-Cover.com editorial team Last updated 31 July 2026

Cover the pond. Protect the water.