Sailing Uma · video

What this video covers

The crew of the boat Uma installs a multi-layered insulation system using spray cork and cork panels to mitigate condensation and improve thermal regulation.0:45 They select spray cork from the French company CORK because it is non-toxic, natural, and acts as its own vapor barrier.6:50 Before applying the material to the hull, the crew conducts adhesion and consistency tests using a hopper gun with a 6mm nozzle.22:58 They experiment with varying water-to-cork ratios and air pressures to achieve an optimal application consistency, initially struggling with nozzle clogs at four bars of pressure and excessive runoff at thinner consistencies.35:07 Consulting with experienced users, they determine that a consistency resembling heavy cream and a lower operating pressure of approximately one bar provide the best results.35:23 The process requires extensive masking of the interior with plastic to protect bulkheads from overspray, followed by a 48-hour drying period between each of the four planned coats.16:04 Proper consistency and pressure settings are critical to preventing nozzle clogs and ensuring the material adheres to the hull without sloughing.32:25

More from Sailing Uma

Solar Sponsor Backed Out Before Sailing Around the World !Sept 2026Our boat won’t look the same after this | Step 495Aug 2026The ONE Thing We Disagreed on This Entire Refit | Step 494Aug 2026We Owe You The Full StoryJul 2026

From Sailing Uma — see the channel’s boat, crew, and every analysed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.