Prep your dome for winter with these simple steps

It’s that time of year where people in harsh climates prep their properties for winter weather. A dome also benefits from annual TLC, starting with a bit of gentle scrubbing.

When the dome surface looks dirty, customers can clean the outer PVC airform with simple tools—mild detergents, soft brushes, and low-pressure water are all it takes to restore most membranes to original condition. High-powered pressure washing is discouraged and might remove the membrane’s protective coatings applied to maximize the lifespan.


Even though an airform resists UV damage and harsh weather, every airform will at some point require repairs, just like traditional roofing. The lifespan of the membrane is typically 15 to 20 years. Routine inspection and upkeep will help maintain quality to get the most out of your dome’s exterior.

We recommend annual inspections to ensure the PVC airform is free of damage and protecting the structure. Use the following checklist for your inspections:

  • Are there any tears or punctures in the fabric membrane?
  • Is polyurethane foam exposed?
  • Is the fabric membrane brittle and showing signs of cracking?
  • Is the membrane now chalky to the touch, unable to be “polished”?
  • Is the dome prone to leaking at penetrations, valleys, or other joints?
  • Do you have other concerns not listed above?

If you answered “yes” to any of these questions, our team will help you properly address issues before additional damage is done, possibly affecting the dome’s concrete infrastructure. Call 208.552.6179 or email your concerns and photos to