Sailing Uma · video

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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

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