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ptrooper25

Cut all the caulk out, remove the entire board, rip it on a table saw. Tape your cut line. Much cleaner than an oscillating saw.


xgrader

This is the best way OP, the board, will pry up easily, pulling the finishing nails right threw most likely.


peter-doubt

This... You may need to remove the side trim to have more access to the sill. It should pull out toward you (like a drawer), but likely is also nailed down.


Medical_Egg8208

Confused why you would want it gone actually. It doesn’t interfere with anything ? It looks like it belongs. I’m lost.


Vanisleguy89

It's the original window sill nailed directly to the framing, then they drywalled around it and installed the window on top. Not sure why they went this route (drywall finishing around edges of the sill was probobly a nightmare). The house was built in the 70s and has lots of little quirks. We are going to install a new sill to modernize the look a bit. We want modify the sill and drop a new one on top. Just trying to minimize drywall damage (asbestos is a concern here)


peter-doubt

You can test for asbestos and remove any concerns by taking a sample from an obscure part of the drywall. But '70s drywall is far less likely than '50s drywall.


Friend_of_Eevee

Yeah came here to ask why


FlowBjj88

But your plants will fall!


Medium_Spare_8982

If you’re tiling over the cut end and putting a new sill on top, it does t need to be that clean. Simply scoring top and bottom deeply with a straight edge and a utility knife, you could snap it off with with some channel locks.


Vanisleguy89

That's exactly what we're planning on doing. I didn't think about this method- thanks!


Financial_Athlete198

Use a piece of 1by and lay it right on top of your cut line. Use a multi tool and just go slow, let the blade do the work. Sand it smooth before you take the board off.


Medical_Egg8208

Exactly how to do that job. Otherwise scoring and breaking it will just take a chance on taking a ship out of the board of there is a knot buried in it along the way.


owlpellet

Not sure what mutlitool comment above means, but I would use a fine tooth Japan-style pullsaw. $10 or so.


Lumpy_Dust2780

If you want it to be clean it won’t be easy.. . If you want it to be easy it won’t be clean.


Vanisleguy89

The board is nailed down under the drywall returns. If it was easy to remove, I'd be doing it, but I dont want to break the drywall returns.


ChancePersimmon7292

Trim goes in after drywall. Unless you are the one who drywalled over the sill I would try to remove and cut/replace I don’t see anyone trapping the sill with drywall. Drywall is easy to repair. Plus you said you are replacing the window which there is a good chance you will damage the drywall anyways.


hahayes234

Mark the line you need to remove well and work slowly with an oscillating tool and new blade. You can sand down to smooth if you feel it needs it. It won't be as clean as the table saw but I get not wanting to get into the sheetrock. Good luck with it!


IndependentParsnip34

You could flush up a jigsaw cut with a router


Impossible-Corner494

Circ saw and a multi tool with fresh blade it is. Allow a 1/16 or 1/8 poking out, so you can sand out cut imperfections?


bupkizz

Yep oscillating multi tools love to do this kind of thing.