Too late . Already started r I ping out the rot and I think it's good I did.
Kathryn, to keep your repair as simple as possible: forget about cutting out the damaged sections. That avoids having to buy a vibrating universal tool, though they are really handy to have. Just have Home Depot or Lowes or your local lumber yard cut you two rectangles of plywood big enough to span over the damaged floor areas into the undamaged areas. Plus buy a piece of thin sheet aluminum (cuttable with good scissors or metal snips) and cut to same dimensions. Using some adhesive like liquid nails or silicone glue the metal to the underside of one piece of plywood.? Being careful to avoid where any frame members are under the floor, simply drill holes (with 1 person laying under and 1 inside to hold the upper plywood in place) through the upper plywood, the remaining undamaged floor and the lower plywood and sheet metal below it. Bolt through those holes placing nylon insert lock nuts on the lower end of the bolts (those will remain removable in the future but never loosen by accident.) Seal the edges of the lower metal/wood patch with either roofing patch tar or spray rubber sealant. That¡¯s all, folks. On the underside it is possible you might need to do more than one patch on either side of any frame rails but above you can span it all with a single piece. If you are lucky you will be able to do it all in one piece above AND below. Actual installation after precutting and with two warm bodies should be 1/2- 1 hour. Don¡¯t over think this repair. Or let it scare you off.?
On Mon, Jul 25, 2022 at 6:52 AM KATHRYN BAXTER <
kmb442@...> wrote:
Thanks all. Still working on it. My proble is brute force non existing. Cannot take metal screws out of the cross beams. Likely will try a repair myself with a cobbling together of all your ideas.? It will certainly not be as good.?
Hello
Flyboy:
Nice
job, thank you for all the photographs.
Carl.
This is a photo of part of my rotten wood repair.? Before
cutting out the bad wood, I first located the metal framework
underneath.? Then basically I cut out the floor using a jig saw
in the open areas and a multi-tool cutter with metal blade when
cutting on top of any metal frame members.? It is easy to tell
when you hit metal.? After removal and cleaning things up, I
used the old wood as a template for cutting the new piece of
1/2" exterior plywood.? The new wood was put down with adhesive
on top of the metal framework, screwed, caulked and then double
plated from underneath on the joints that were NOT above a frame
member.? These were glued and screwed down from the top.? All
new/raw wood on the underside was sprayed with a rubberized
undercoating (similar product to Flex-Seal).
I plan to put together a video in the near future that shows
more of this project.? But hopefully?These photos will help.?
The photo showing me standing on the ground, through the floor,
is the right front corner.? I wanted to include it as an FYI to
show the frame members.? The arrangement is different in the
rear, but it give you an idea.
