Amulet
Well-Known Member
As an old fashioned varnisher I'm taken with the new enthusiasm for woodskin and various oils as coatings. I've never used them. My instinct is that you can't choose the coating without considering the timber. For a highly durable wood like teak or iroko, you can coat with almost anything (or nothing) without danger. For a durable, say oak, some kind of coating will help, but it can be of a soak in type. Mahogany, or at least the things they sell today as mahoganay.. mmm? Bit more demanding. Ash - springy for tillers and spreaders but thoroughly perishable - total seal against moisture essential.
I'm therefore anxious about adopting any if the recommended favorites without more information about their properties. In particular, I can't see how you can how you can build up a decent sealing coat thickness using traditional alkyd varnish without lots of coats no matter what your religion. Lay it on thick and you'll get solvent entrapment and it won't dry. Can the soak it type of coatings actually seal the wood? If not I doubt their ability to keep perishable timber looking good. Two part can be laid on thick in some systems, but it is brittle and doesn't age gracefully like traditional varnish. Woodskin says it lets your timber breathe - which for me with (say) ash means rot!
I use traditional and two-part and depending on time and patience. Am I missing out on a new wave of coatings for perishable wood? Currently it's all a compromise of some sort for me.
I'm therefore anxious about adopting any if the recommended favorites without more information about their properties. In particular, I can't see how you can how you can build up a decent sealing coat thickness using traditional alkyd varnish without lots of coats no matter what your religion. Lay it on thick and you'll get solvent entrapment and it won't dry. Can the soak it type of coatings actually seal the wood? If not I doubt their ability to keep perishable timber looking good. Two part can be laid on thick in some systems, but it is brittle and doesn't age gracefully like traditional varnish. Woodskin says it lets your timber breathe - which for me with (say) ash means rot!
I use traditional and two-part and depending on time and patience. Am I missing out on a new wave of coatings for perishable wood? Currently it's all a compromise of some sort for me.