[quote]Quote from DavidJ on June 23, 2014, 07:01
Not that I want to use putty. Who has 30 days to wait before painting it, like you say? I believe there a a fair few painters out there who wouldn’t wait this time. [/quote]
How on earth did we get by before resin repairs and two-packs! Linseed oil putty was the only stuff we had and looking at Georgian windows done right, it worked fine, if you obeyed the rules. But you are right, practicalities get in the way and the temptation is not to wait 30 days.
One of the keys to longevity was as you say, leave it to go hard. On modern casements, there is really very little puttying to do, eg one 12 pane Georgian sash could have as much work as all windows on a modern bungalow, so for many modern homes, there is no phase one and two, all windows are brought forward together, so for putties, that means a drying time of “the weekend” or for some a week, if you dare leave a job for a week to leave the putty to skin over well.
Learning from the speed merchants, you apply undercoat very gingerly so as not to create brush marks on the wet putty.
Another thing that works against leaving putty to cure well on modern casements, is back priming rebates. That is essential, to slow down the drying out process, but that doesn’t help if you want to get on.
Apprentices should know all about linseed oil putty, up to their elbows in sticky goo, working it out on newspaper till it is workable for the boss to use !!!