Breathers / Drain holes

The hatch covers currently available, with rubber gaskets and the cover concealing all the fastenings, are airtight if well installed and maintained. The ones we used to get in the 70s, on the other hand, leaked like sieves.

Originally posted by JimC The hatch covers currently available, with rubber gaskets and the cover concealing all the fastenings, are airtight if well installed and maintained. The ones we used to get in the 70s, on the other hand, leaked like sieves.

So easy peasy lemon squeezey, just screw a gore valve into the lid, jobs a good un.

Edited by iGRF - 09 Aug 17 at 8:22pm

Love those Gore valves. Don't own any airtight boats, though!

Originally posted by 423zero Would a releasing one way valve work ? bake the boat in midday sun, valve allows air to escape, cool it in the water, no air can get in to relieve vacuum.

Goretex isn't one way though is it? I thought it was fully breathable while being waterproof.

Yes a bit misleading my first explanation, it is of course one way for water, not air. A Test we used to show dealers and the public at shows, was to put your hand in a bucket of water, then place it in a Goretex glove (a good one) then place the gloved hand back in the water and leave it for a few minutes, eventually your hand will dry inside the glove.

Sold lots of Goretex gloves in my time.

Edited by iGRF - 10 Aug 17 at 9:14am