Forum Title: Extending door threshold & sill
Couldnt find anything that answered my question. I'm replacing garage entry door w/ basic steel door. Will be adding 2 foam insulation to the garage wall pushing it's depth out. I can add the jamb extensions around the sides and header jamb, I've done it dozens of times for windows, but have no idea how to extend the threshold / sill. The door will be a prehung.
Category: Windows & Doors Post By: LORRAINE DAY (Azusa, CA), 01/15/2019

Good call on hiring a pro.

- HELEN B (Los Angeles, CA), 02/02/2019

Thank you XS. I'll also need to extend the frame at least at the bottom where it meets up with the subfloor. On the sides and top I guess I can butt the rigid foam up against the jambs but the entryway is not level - I need the structural support for the extension on the bottom between the wood subfloor (inside) and the lower concrete steps (outside) so I really do need some sort of frame extension at the bottom. I guess I can just rip some pieces and do more of what is already there. Any further ideas on that are welcome!

- LEO BREWER (Warren, MI), 03/07/2019

Extending door threshold & sill Reply to Thread

- DIANE TORRES (Burlington, NC), 02/01/2019

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