camp house floor insulation

[Halftrack]

I hope your neighbor with the ranch doesn't mind that you are building that close to him.

 

[RNeumann]

If you are worried about having to lay on your back to attach plywood consider adding a 1x2 to the bottom edge of the joists before they go in. Then you can rip strips of treated/sealed plywood that you can drop in between the joists. Then drop your insulation batts in and run the subfloor. Everything would be done from above using this method.

 

[747driver]

I am with RNeumann. Never thought of adding the 1x2 cleats then put down 1/4 inch plywood and fill with fiberglass batts.. Closed cell foam would also be a good choice.

 

[tcreeley]

I've used chicken wire between the joists figuring that if rodents did get up there the fiberglass bat would not fall to the ground. Then I sheathe with plywood, 1" foam on top of that plywood and finish flooring. Plastic sheeting goes over the foam for a vapor barrier. The floor I did this has held up very well.

 

[rustyshakelford]

I was watching one of those building in Alaska shows and they put plywood under their floor joists, then filled up the open areas with fiberglass, then put down their sub floor. I would imagine that the plywood under the insulation would keep out the mice.

What about spraying the plywood with foam?

Brett

 

[pmsmechanic]

I want to see what you end up doing with this. One thing for sure. Extra effort at this stage will be well worth it long term.

 

[Oldpath05]

I have a similar situation with a 8'x16' add on to my house, the floor gets relly cold so I'm thinking of trying something like this spray foam this summer>>>>>> Touch 'n Foam 2 Board Foot Polyurethane 2-Component Spray Foam Kit-4222 - The Home Depot

 

[civilian]

What is the possibility of buiding the floor joists upside down? Meaning, build a section of floor joists, add the 1/4" plywood, turn over that section and place on your piers, then do another section, until complete. Then insulate the cavity and put on the subfloor? Similar to the 1" x2" but different. Just a thought. Jon

 

[pmsmechanic]

What is the possibility of buiding the floor joists upside down? Meaning, build a section of floor joists, add the 1/4" plywood, turn over that section and place on your piers, then do another section, until complete. Then insulate the cavity and put on the subfloor? Similar to the 1" x2" but different. Just a thought. Jon

I thought of the same thing. Only using a light tin instead of plywood. If the tin was installed with 2x2's with longer screws and all the joints were blocked ai think you would be able to keep all kinds of rodents out. I saw once what squirrels did to a cabin. It was a mess!

 

[aczlan]

If you are worried about having to lay on your back to attach plywood consider adding a 1x2 to the bottom edge of the joists before they go in. Then you can rip strips of treated/sealed plywood that you can drop in between the joists. Then drop your insulation batts in and run the subfloor. Everything would be done from above using this method.

Or, screw a 1x3 to the underside with deck screws so it hangs out on both sides of the joist.

Aaron Z