varnish old teak with what ?

Burgess Woodsealer.
That was one of the test ones which failed on my boat. I tried it on my previous one when it first came out as the new wonder-treatment, and while it worked OK inside it was a disaster outside - all fell off within a couple of years leaving dye soaked into the teak which took a lot of work (and teak) to remove. Never again.
 
For teak, personally, an 'easy on' finish is better than one that needs a lot of preparation. The downside it that it will not last so long, but teak is hard to keep any finish on for long. I use Woodskin, presently, on teak rails (though may switch to other Sikkens products once the tin is empty), Epiphanes on most of the rest of the woodwork, and some Le Tonk. Maintenance wise v's attractiveness this seems to work best so far.
 
Still happy with the Le Tonkinois. The cockpit coaming gets annual attention as there's a lot of ropes dragging over it. The rest as needed - didn't need it this winter. And that was a pretty brutal year UV wise.

varnish_after.jpg
 
I have have a can of Le Tonkinois which I bought because the old boy who sells it at boat jumbles has such an entertaining patter. "Smell that. What does it remind you of? That's your Grandad's workshop, isn't it ..."
 
Polyeurathane varnish. It'll get chipped somewhere, let water in and keep it there hastening the rot of any wood within. It'll sound the death knell for any wood exposed to the elements.

Many an old wooden boat has been moshed this way.
 
That was one of the test ones which failed on my boat. I tried it on my previous one when it first came out as the new wonder-treatment, and while it worked OK inside it was a disaster outside - all fell off within a couple of years leaving dye soaked into the teak which took a lot of work (and teak) to remove. Never again.
I am surprised. Never had problems with mine. I can't understand how it can flake off unless it has been vastly over-applied as it only needs one coat to seal.
 
I've never been able to detect much difference in the performance of the various traditional varnishes and just use whatever is available at a moderate price. The thing that works is to try to cover it when you leave the boat or over the winter. A simple canvas sleeve over the tiller for example or some plastic gutter pipes over the handrails in winter save hours of work. Coming up for 12 years now with just a touch up every few years.
 
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