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retro__grade OP t1_j1r9ktn wrote

Reply to comment by arebet in Should I seal this hole? How? by retro__grade

Sorry, should have been clearer - I’m not sure what materials are correct to use to do that. House DIY noob here.

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arebet t1_j1rawkg wrote

Drywall to be consistent. Boxing it in by making a wood frame. 2x2s would work.

Quick and dirty would be to take a piece of panelling and nailing it down then coating with some joint compound and taping the joints.

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Ashesatsea t1_j1rda7u wrote

Another DIY noob here: I would make a cardboard template the size of the opening, then use that to pattern to a strip of drywall. Cut, chip and break the drywall to get that oval opening around the ducting. Concentrate on fitting the opening closest to you (as you stand there on your ladder); an insulation strip of foam can fill the gap. Since the ducting touches drywall on the right in this picture, just cut two more small triangles to fit the unseen corners closer to the wall. I would adhere those to the wall/drywall, then tape them in place until they dry since it looks like there’s no wood to screw them to. Mud the gaps, paint the repair and then the ducting to match the wall or ceiling. Then stuff the insulation strip around the curve of the ducting. Otherwise box it in like previously mentioned.

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