Installing a hexagonal floating cover — reference

Hexprotect® AQUA and Hexofloat® install identically: shoreline launch, no anchors, no draining, 2,000–4,000 m² per day per crew of 4–6. No crane, no drains, no service interruption.

What is the install?

The install is the on-water deployment sequence for modular hexagonal floating covers. The crew launches pre-ballasted elements from the shoreline, lets water motion tessellate them across the surface, then sets ring exclusions around fixed infrastructure (pump suctions, inlets, outlets).

How the install works

1. Shipping and staging. Elements ship stacked on standard pallets — typical pallet count is one for every ~150 m² of cover area. Staging requires a level pad next to the shoreline launch point.
2. Launch. Elements are launched in batches from the shoreline directly onto the water surface. No crane, no specialist equipment.
3. Tessellation. Elements self-distribute via water motion. Hexagonal geometry packs at 99% effective coverage (AWTT-published for Hexprotect® AQUA); crew intervention is limited to nudging clusters toward gaps.
4. Inflow and outflow management. Ring exclusions around pump suctions; the cover floats freely around inlets, outlets, and skimmers.
5. Inspection. Visual inspection from the shoreline confirms coverage. No moving parts, no power consumption, no scheduled maintenance.

Benefits

Site preparation

Three preparation items determine launch-day throughput. None require civil works; all are typically achievable inside a single day with site personnel.

• Staging pad. A level pad next to the shoreline sized for the inbound pallet count. Typical loadout is one pallet per ~150 m² of cover area; for a 10,000 m² reservoir budget pad space for ~66 pallets plus crew walkways. Standard hard-standing (concrete, compacted aggregate, or stable grass) is sufficient; no permanent foundations required.
• Vehicle access. A path between the staging pad and the shoreline that accommodates pallet movement — a forklift lane or a hand-pallet route depending on terrain. For sites with restricted vehicle access, plan the staging pad closer to the launch point.
• Shoreline launch lane. A clear stretch of shoreline along the longest accessible water edge. The crew launches tiles in batches from this lane; obstructions (jetties, hand-rails, dense vegetation) force the launch around the obstacle and slow throughput. A 5–10 m clear lane is the typical working envelope.

Pre-launch checks: confirm pump suctions are mapped (ring exclusions are planned around them at launch), confirm any fixed infrastructure positions (inlets, outlets, skimmers, weirs), and confirm the design-day water level. Anchorless deployment means the cover is tolerant of multi-metre seasonal water-level variation — the prep is identifying the level on launch day so the crew accounts for any unusual exposure of the shoreline.

Post-install QA walk-down

The final day of any install closes with a walk-down. The walk-down is the operational deliverable that becomes the baseline for annual inspection comparison.

The walk-down confirms full tessellation across the water surface (no large gap clusters), validates the ring exclusions around all fixed infrastructure (pump suctions clear, inlets and outlets unimpeded, skimmers operable), and captures the coverage state for the project record. Typical record format is one or two aerial photographs (drone or shoreline-elevated camera) plus a shoreline walk-around with photographs at each infrastructure interface. The aerial photograph anchors the AWTT-published 99% effective coverage claim site-specifically for the reservoir operator’s records.

For potable-water reservoirs, the walk-down also confirms NSF/ANSI food-grade variant deployment (the food-grade tile is visually distinguished at order time; the walk-down confirms no non-food-grade tiles were mixed into the deployment). For DWI Regulation 31 compliance in the UK or EU Drinking Water Directive compliance across the EU, the walk-down record becomes part of the operator’s compliance file.

Lifetime maintenance schedule

The AWTT-published Hexprotect® AQUA service life is 25+ years; the EuroCover-published Hexofloat® service life is 15 years. Across either horizon the maintenance schedule is the same: annual visual inspection. No moving parts, no power consumption, no scheduled maintenance interventions.

Damaged tiles repair per-element in service. Keep ~2–5% of total tile count as on-site replacement inventory for the design horizon — sufficient to absorb extreme-weather damage, accidental impacts, or end-of-life element retirement without re-ordering. Replacement tiles are launched into the gap created by removal; the surrounding tessellation closes around them naturally. No drain, no specialist crew.

Regional EU installation considerations

EU industrial reservoirs vary significantly on three axes that affect cover specification: wind exposure, water-level fluctuation profile, and the dominant regulatory regime.

Coastal sites — UK, Ireland, the Netherlands, Atlantic-facing Portugal, Spain, France. Sustained wind exposure plus storm-event peaks favour the AWTT-published 130+ MPH envelope of Hexprotect® AQUA. Coastal sites also see salt-aerosol exposure; the AWTT virgin-HDPE formulation is engineered for this case.

Continental industrial sites — Germany, Poland, Hungary, Czechia, Austria, Slovakia. Sheltered terrain typically reduces design-wind speed to inside the 75 MPH envelope of Hexofloat®. Continental sites also see wider seasonal temperature swings; the AWTT-published −57 °C to +71 °C operating range covers both winter freeze cycles and summer surface temperatures.

Mediterranean and arid-zone sites — Southern Spain, southern Italy, Greece, Cyprus, southern Portugal. Evaporation is the dominant operating-cost driver; the AWTT-published up to 95% evaporation reduction is the case for the cover. UV exposure is the most aggressive of any EU climate; specify the full Hexprotect® AQUA envelope for the 25-year service life across the highest-UV regions.

Nordic and Baltic sites — Sweden, Finland, Norway, the Baltic states. Lower wind exposure but periodic ice loading on the water surface. The AWTT-engineered tile is rated for ice-bearing surfaces inside the operating temperature envelope; consult EuroCover engineering for site-specific ice-loading review before specification.

Regulatory framing. All EU sites supplying potable water specify the NSF/ANSI food-grade variant to satisfy the EU Drinking Water Directive (2020/2184). UK sites additionally need to satisfy DWI Regulation 31. EU public-sector procurement frameworks favour EU-manufactured product — Hexofloat® is the in-family variant for that case. For country-specific procurement language, lead times, and regulatory framing see the eurocovers.eu countries reference.

Common issues and troubleshooting

A small number of operational issues recur across installations. None require specialist intervention; most are addressable inside the standard annual walk-down.

• Surface debris accumulation. Floating debris (leaves, plastic litter, biological material) accumulates at downwind shoreline boundaries. Standard practice is a once-per-quarter shoreline sweep with a hand-held collection rake. The AWTT-engineered central dome geometry prevents debris from settling on the tile surface.
• Gap clusters in the tessellation. A small percentage of tiles may end up in non-optimal positions during initial tessellation. The annual walk-down identifies any gap clusters; the standard response is to nudge the cluster toward the gap with a long pole from the shoreline. The tessellation closes naturally.
• Tile displacement after extreme wind. AWTT-published wind ratings (130+ MPH for Hexprotect® AQUA, 75 MPH for Hexofloat®) are the engineered design envelope. Beyond-envelope events may displace a small percentage of tiles to downwind shoreline; the standard response is to launch them back into the tessellation from the shoreline launch lane.
• Tile damage from operational impact. Boat traffic, pump-suction draw-in, or accidental mechanical contact may damage individual tiles. Damaged tiles replace per-element using on-site inventory (target 2–5% of total tile count).
• Algae or biofilm accumulation on tile upper surfaces. Rare — the AWTT-engineered smooth outer surface sheds biology naturally. Where it occurs (typically in nutrient-rich water bodies adjacent to agricultural runoff), an annual shoreline-launched pressure-rinse maintains the surface.

Install vs draining-required alternatives

Continuous geomembrane covers require draining the water body and tensioning a single membrane to anchors at the perimeter — a multi-week, full-service-interruption operation. Modular hexagonal covers deploy on the live water surface in days, without draining. The full engineering trade-off is on /vs/floating-cover-vs-suspended-cover and /vs/hexagonal-vs-geomembrane; continuous topologies remain the right answer for gas-capture applications (sealed biogas digesters) and full surface containment.

Sources

• AWTT — Hexprotect® AQUA hexagonal cover — AWTT-published installation throughput, anchorless deployment, 99% effective surface coverage, 130+ MPH wind certification, −57 °C to +71 °C operating temperature range, 25+ year service life.
• Hexprotect® AQUA specifications — full AWTT spec table.
• Hexofloat® specifications — EuroCover-published EU-manufactured variant specs.
• Self-ballasting cover — engineering reference for the pre-ballasted mechanism.
• Why copies fail — operational failure modes of unlicensed hexagonal-cover knock-offs.
• For EU country-specific procurement, lead times, and regulatory framing — eurocovers.eu/countries.