Thread: Waterproofing Flys and Tents

I haven't done it myself yet.

Ah, yeah - I watched that video and gave it a go the other night

I used what is sold here as White Spirits and the first time it wouldn't blend - I'd used some clear stuff that was "co-polymer sealant" instead of silicone so that got thrown out - after trying to mix that shit for about half an hour I just had bits of chopped-up clear sealant floating in the Wh/Spirits. Duh.

More white spirits and clear silicone has taught me several things-
1 clean the garage floor
2 use a 20l bucket and clean it out too
3 pre-tie the guyropes to the 4 corners if ya can
4 drill on low-speed = less mess


1l White spirits and half a tube of silicone nearly did my Northridge 3x4m tarp and I hung it in a V shape so that the most waterproofing sloughed down to where the ridge will be as that was where it dripped

Next time I'd do 2l of spirits to a 3/4 of a tube of silicone - the 3:1 ratio works pretty well

It stinks so breathing gear with filters is recommended and long rubber gloves of course

The fabric gains a little weight (maybe 10 to 20% ?) and feels more rubbery - guys on ultralight camping forums talk about their treated tent floortubs being less "slippy" if that makes sense

I'm gonna treat some building wrap as a tester for groundsheets and I'll put some pics up whether it's a failure or success - the only way to learn is make mistakes so I must have a feckin PhD by now....

Originally Posted by gadgetman

I haven't done it myself yet.