I’m unsure of a good way to repair a large(12′) wood window sill that is partially rotted from water damage. I thought if it was trimmed with a circular saw,with the scrap piece being used as a template to cut out a replacement from a 2×4 on a table saw an then fasten it with adhesive and screws. Any help is appreciated. Thanks
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You're on the right track. I would add that instead of adhesive, marine epoxy would outlast the wood.
Speaking of wood, what are you using. I'd use premium quality (Wolmanized) treated wood for that. The wet stuff from the big box stores will probably shrink and crack.
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Thanks
The wood species used to replace the rotten section you cut off should be the same as the original sill. You don't need to use poisoned ('treated') wood; you need to make sure it is pitched properly for drainage and covered with a good quality exterior paint or stain + varnish. Wood doesn't rot just because it gets rained on; it rots if it can't dry out again.
As to attaching the new piece to the old: you said this sill is 12 feet long and 1½" thick. That being the case, I would recommend a double row of #20 biscuits on 24" centers.
You can use a polyurethane glue such as PL Premium Liquid if the sill is paint-grade. If it is a stain-grade job, use a good brand of 'yellow' carpenter's glue; it is rated for exterior non-structural/non-immersed applications.
Dinosaur
How now, Mighty Sauron, that thou art not brought
low by this? For thine evil pales before that which
foolish men call Justice....
Good call.
I'm a big fan of Titebond 3, but it ain't yellow ..LOLSpheramid Enterprises Architectural Woodworks
Repairs, Remodeling, Restorations
"We strive for conversion,we get lost in conversation, and wallow in consternation. "Me.
Thanks for the info
Who you callin' not yellow? Why, I oughta....
Okay, it's not yellow. But it's even more not white. I think the stuff I use is Lepage's. Dammit, now ya made me get up and go down and up two flights to check. Yeh. It's Lepage's Colle de menuisier. Otherwise known to the unilingual crowd as 'Carpenter's Glue.' Rated 2 tons.
It's eggnog colour.
You happy now?
Dinosaur
How now, Mighty Sauron, that thou art not broughtlow by this? For thine evil pales before that whichfoolish men call Justice....
I guess. I uz just sayin..TB3 is more better than the TB2 which IS yeller,,the TB3 is browner..and more waterproof than 1 or 2 is.
Iffin ya say use yellow glue outdoors, one should specify waterresistant or waterproof, cuz if some poor sap goes into a bigbox and gets "yellow carpenters glue" it MAY not be exterior rated.
Elmers, Franklin, Lepage, all make glue that is NOT waterproof/resistant.
Just sayin is all.
Go eat supper!Spheramid Enterprises Architectural Woodworks
Repairs, Remodeling, Restorations
"We strive for conversion,we get lost in conversation, and wallow in consternation. "Me.
Excellent advice, Sir.
Dinosaur
How now, Mighty Sauron, that thou art not broughtlow by this? For thine evil pales before that whichfoolish men call Justice....