Aluminum Dome & Cover Systems · Built for Longevity

Cover the tank. Protect the asset.

Clear-span aluminum geodesic domes, flat covers, and custom aluminum cover systems engineered to API 650 Appendix G. Corrosion-free, low-maintenance, and built to outlast the tank beneath them.

API 650
Appendix G
Clear-Span
No Center Column
6063-T6
Aluminum Alloy
50+ yr
Design Life
Finished aluminum geodesic dome cover installed on a steel tank in an industrial yard
Standard
API 650 App. G
Cover Offerings

Three systems. One material.

Aluminum resists corrosion without coating, sheds load efficiently, and installs fast. Pick the geometry that fits your tank, your odor/emissions requirements, and your access needs.

CLEAR-SPAN

Geodesic Dome Cover

Triangulated · Self-Supporting

A triangulated aluminum frame that clear-spans the tank with no internal columns. The standard for large-diameter water, wastewater, and storage tanks where strength-to-weight and corrosion resistance matter most.

  • StandardAPI 650 App. G
  • SpanClear, column-free
  • Alloy6061 / 6063-T6
  • Life50+ years
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FLAT

Aluminum Flat Cover

Beam-Supported · Low Profile

A flat aluminum deck for smaller-diameter tanks or where height is constrained. Sealed against debris, weather, and emissions with a clean, low-profile finish.

  • ProfileLow / flat
  • UseSmaller diameters
  • SealWeather & debris
  • AccessHatches available
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CUSTOM

Custom Cover Systems

Engineered to Site

Internal/external floating covers, troughed decks, odor-control geometries, and retrofit covers engineered to your existing shell and freeboard.

  • TypeFloating / fixed / retrofit
  • FitExisting shell verified
  • Add-onsHatches, vents, rails
  • SpecSite-engineered
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Why Aluminum

No coating. No recoat. No rust.

Aluminum forms a self-protecting oxide layer, so a dome cover never needs the recoat cycle a steel roof demands. Lighter loads, faster installs, and a service life that routinely outlasts the tank.

  • Corrosion-Free by Design
    No sacrificial coating to maintain — the alloy protects itself for the life of the asset.
  • Engineered Load Path
    Triangulated geometry carries wind, snow, and seismic loads to the tank rim efficiently.
  • Emissions & Odor Control
    Sealed covers contain odors and reduce evaporative and emission losses on treatment tanks.
Overhead view of a translucent aluminum geodesic dome cover showing the triangulated panel pattern
Field-Proven

Domed. Sealed. Standing tall.

Aluminum covers installed on water, wastewater, and industrial tanks across the country.

API 650
Welded steel tanks — Appendix G domes
ASCE 7
Wind, seismic, and snow loads
ASTM B209
Aluminum sheet & plate
AWWA D108
Aluminum dome roofs for water tanks
OSHA 1910
Access, rails & fall protection
Frequently Asked

Answers before you submit.

Steel roofs corrode and require periodic recoat — a recurring lifecycle cost and downtime hit. Aluminum forms a self-protecting oxide layer and never needs that recoat cycle. It is also far lighter, which reduces structural load and speeds installation. Over the life of the asset, the aluminum dome is usually the lower total-cost choice.
Yes. We verify your existing shell diameter, rim condition, and freeboard, then engineer a retrofit dome or cover to fit. This is a common rehabilitation scope — pairing a new cover with a recoat or repair of the tank below.
Sealed covers contain odors and cut evaporative and emission losses on treatment and process tanks. We can integrate odor-control geometry, foul-air connections, and access hatches into the cover design.
Aluminum geodesic domes are engineered to API 650 Appendix G (and AWWA D108 for water tanks), with wind, snow, and seismic loads per ASCE 7. Every dome ships with engineered, stamped drawings for the project jurisdiction.
Ready When You Are

One source. Every line.

Tanks, covers, coatings, accessories, and forensic review combine in a single configured quote. Give us 24 hours and a project address.