Teak cladding

System

if you treat it once, you'll have to keep treating it every year, the whole reason in using cedar is that you don't have to treat it - it's meant to silver

missile

Many thanks to all for your comments. Can you point me at an authoritive website to support the case for no treatment which I can download to show to our management contractor?

In fairness to him, I would add he is responding to requests from a.n.other residents who think the timber ought to be treated.

System

you should speak to who ever specified the timber cladding in the first place so you can find out the exact spec then you can find the performance - but as an example http://www.vastern.co.uk/tc-western-redcedar.html