T & G fixing and spacing.

[Woodworks]

I am building a new front door for my folks and unsure what is the best way to fix on the T & G. In the past I have used shridized pins but saw a local joiners screw and plugged their doors. Also what do you recon on how much to leave for expansion and shrinkage. The T & G is dry as I have made it up myself from some kiln dried stock. I always diether about these two things so thought I would ask advise.

 

Thanks

Beau

[Stompy]

I usually put a groove all the way around the frame and have tongues all the way round the T&G boards. I then fit the boards during the glue up of the door, fiddly but the most secure way of fixing them as there is no chance of them lifting and stops any cupping that may occur in the boards

 

Screws and plugs is a good secure method, one in the centre of each board to allow for movement. Pins work to but not as secure.

 

As for spacing I usually go for about 1 to 1.5mm between the boards.

 

It is also a good idea to put a finish or preservative on the tongues and in the grooves before fitting to protect from any moisture ingress. You have to use your judgement on how much to allow for on the groove for this though.....

Edited April 4, 2014 by Stompy

[Woodworks]

Thanks Stompy.

 

Like the idea of completely captive T & G but too late for this one. So you reckon 1 -1.5mm I was thinking 3mm so will probably split the difference at 2mm. The tongues are 8mm so plenty of room for error (I hope)