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Hey guys, will wood expand and contract in rabbit joined areas that are glued with water proof glue?
Im making some siding out of pine wood for my small cabin (things i do when im not doing cabinet work). I want to rabbit join them together using the Titebond water proof glue. The siding will be exposed to the elements (mostly rain and sunshine). The siding will be the walls of the cabin. In other words one side of the wood siding will be the exterior and the other side the interior. I will finish it with some kind protective sealer or paint. My concern is whether this joints will expand/contract and end up splitting wood apart. Or will it just expand/contract outwards?
I think if you make the whole side of the house one giant slab you will have some sort of problems with it and no amount of finish will fix that. Why even take the chance. Even something as small as a shingle is attached with movement in mind.
Of course it will move. Lapped and tongue and grooved siding is designed to accommodate movement. Gluing or even improperly nailing exterior siding will defeat this and cause it to crack. Temperature and humidity changes are usually much greater outdoors and the differential between indoors and outdoors will amplify the problem. Flexible caulk would probably be a better option.
Hi Chris, do not glue the joints. The wood will expand and contract like crazy especially exposed to the interior and exterior. Nothing wrong with rabbet joints just don't glue them. Don't glue anything while your at it. You want galvanized ring shank siding nails. Use them reasonably sparingly as you want to allow the wood to move with the seasons.
The Two Fundamental Rules of Woodwork:
But seriously, you have gotten good advice. Do not glue the siding. Wood expansion principles were employed by so-called primitive people to split stone for pyramids, etc. Wood will move, period.
Thanks guys for your responses.
How much space should i allow for expansion?
You can use the Woodweb shrinkulator to approximate potential movement. Enter the species, board width & range of MC from current to potential change. Ex. 13%-7%...depends on your climate/location.