Exterior biscuit joinery
I’ve been lurking for a while and have learned a lot and had lots of questions asked and answered by others. Thanks!
Does anybody have any advice on using biscuit joinery on an exterior trim detail? Its what you might call a window buildout. I want the joints to stay nice and tight over time, and the joints in question would not be directly exposed to rain.
Not sure of your exact application, but what I typically do for exterior work is pocket hole from the rear and biscuit towards the face. Everything lines up real nice and extremely tight.
Built some lattice frames with 5/4" just recently using this method.
Lemme get this straight....
YOU BANNED REZ?!?!
Holy bagels and lox Batman!
I think one of these polyeurathane/pva glues is the key to using these outside, plenty of it to cover all the cut surfaces
Not sure what you mean by a window build out. I've built 'wrapped' posts for a client, 1x6 bevelled both sides, biscuited, titebond III glued and nailed. Standing up fine.
Let's not confuse the issue with facts!
I did some segmented arched exterior window trims in 1x8 fir last year and biscuited them together. I used Titebond II polyurethane glue. So far everything looks fine, although they will need another coat of clear anti-UV next spring like I told the HO when I did the job. Make sure to spray some water on the biscuits just before gluing them in, as the urethane glue doesn't make them swell the way they are designed to with water based PVA glues.
Lamello, I believe the originator of the biscuit joiner, makes a plastic spline. I've never used them outside, but the plastic splines may be worth considering.View Image
This is exactly the info I was after. Is exterior biscuit joinery viable? What kind of glue? Both have been answered.
Thanks very much!