Turps - what's the difference?

[Flynnwood]

The issue with oil based white gloss post 2010 VOC regs is with a lack of UV light (so indoors), it will discolour.

The newer hybrid water based paints are fine ... with low VOC's, two coats in one day etc.

 

[Jacob]

...You pass some very high-performing paint every time you walk down the road past a row of parked cars Jacob. Have any Record planes 60 years old or older? There's another example for you.

The cars have a design life of about 10 years and their finishing technology would be impossible with wooden joinery.
Record planes don't get left out in the rain ever, let alone for the whole of their existence.
All the metal planes I've ever had have lost much of their paint - clearly not much to write home about in terms of advanced paint technology. Basically any old paint will do for a plane - it's only got to see it off the shop shelves - after that who gives an eff?

.....
..... We're all too painfully aware wood isn't what it used to be so we shouldn't expect that old-growth wood as used on a 90-year-old windowframe is the same as that used on one made yesterday even when the same species is used.

Wrong. Good quality timber is available today - for those who want it. The only thing not available is large dimension old growth

Now the paint was definitely a part of it too. When well made oil paint has extremely good exterior weathering performance, but the best of it uses ingredients that aren't permissible today: lead pigments, lead white in particular.

Another popular but incorrect assumption - lead is an effective ingredient but is not essential to longevity - it's the oil. Though my own trials are only 10 years on but doing better than any modern paint I've ever used.

It's the linseed oil that I would actually pay the most attention to, since the colour of it can be so dark. So with light colours, blues in particular, you can see some undesirable colour shifts.

Complete opposite of my experience.

You're equating rubbing a nearly invisible layer into the surface of dry paint with mixing in nearly an equal volume of additional oil into a pale colour?!

Er -not sure what you are saying here. What I'm saying is that blue Allback paint does not darken, in fact exactly the opposite

......I'm living in a house at the moment with woodwork that is 30+ years old, clearly the original paint, and it looks to me to be in perfect condition: no worn-through edges, no peeling, no flaking. A few cracks but that's the underlying wood (cheap softwood naturally) and nothing to do with the paint.

No prob inside - its the stuff outside which suffers. There is no modern paint which would last 30 years outside.

NB you still haven't said what these modern miracle paints are. Do they have brand names? Where can you buy them? Do they really last for 30+ years on external joinery?
Are they a figment of your imagination?

 

[ED65]

You're equating rubbing a nearly invisible layer into the surface of dry paint with mixing in nearly an equal volume of additional oil into a pale colour?!

Er -not sure what you are saying here.

I'm saying you can't equate rubbing a nearly invisible layer of oil into the surface of dry paint with with mixing in nearly an equal volume of additional oil into an existing pale-coloured oil paint. Is that clear now? :roll:

NB you still haven't said what these modern miracle paints are. Do they have brand names? Where can you buy them? Do they really last for 30+ years on external joinery?
Are they a figment of your imagination?

My comment wasn't related to oil paint exclusively on exterior woodwork Jacob! I said, "BTW, Jacob won't want to hear this but in terms of durability good modern paints far outstrip plain oil paints." This doesn't specify on wood or exterior use or only one aspect of durability does it? The sole focus on the weathering resistance of external joinery is something you brought in with you.

That's it from me unless Sir Percy has any further questions.

 

[Jacob]

You're equating rubbing a nearly invisible layer into the surface of dry paint with mixing in nearly an equal volume of additional oil into a pale colour?!

Er -not sure what you are saying here.

I'm saying you can't equate rubbing a nearly invisible layer of oil into the surface of dry paint with with mixing in nearly an equal volume of additional oil into an existing pale-coloured oil paint. Is that clear now? :roll:

NB you still haven't said what these modern miracle paints are. Do they have brand names? Where can you buy them? Do they really last for 30+ years on external joinery?
Are they a figment of your imagination?

My comment wasn't related to oil paint exclusively on exterior woodwork Jacob! I said, "BTW, Jacob won't want to hear this but in terms of durability good modern paints far outstrip plain oil paints." This doesn't specify on wood or exterior use or only one aspect of durability does it? The sole focus on the weathering resistance of external joinery is something you brought in with you.

That's it from me unless Sir Percy has any further questions.

My comments were related to oil paint on exterior woodwork (but not exclusively).
Any old paint will survive well enough inside and clearly the wood will not rot, even with no paint. And yes, I expect hard enamels will last better than linseed oil paints - which are slightly soft and don't set rock hard.

So there aren't any highly developed high tech magic paints which are more durable than (modern) trad linseed paints, suitable for external joinery?

.....I'm saying you can't equate rubbing a nearly invisible layer of oil into the surface of dry paint with with mixing in nearly an equal volume of additional oil into an existing pale-coloured oil paint. Is that clear now? :roll:

Nope, not clear at all!

 

[MIGNAL]

Why don't they use Tung oil in these outdoor paints? Tung oil is used in pretty much every marine varnish going, an environment that obviously see wind, rain, sun and salt water. Perhaps there is some technical reason.
Not that I have anything against Linseed oil! It certainly smells a lot nicer.

 

[Jacob]

Why don't they use Tung oil in these outdoor paints? Tung oil is used in pretty much every marine varnish going, an environment that obviously see wind, rain, sun and salt water. Perhaps there is some technical reason.
Not that I have anything against Linseed oil! It certainly smells a lot nicer.

As far as I know marine varnishes (and marine paints) are kept in good nick by being done/re-done very frequently.