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Best Floor Insulation? RO 04-03-2008
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Posted by RO on April 3, 2008, 12:23 am
When I built my house I insulated the the floor with R19 fiberglass batts.
Rodents have - over the years - torn must of it down. I want to insulate
once more and never again after that. What would be a better way to go?
My floor joists are 2x10's.

Thanks,
RO

--
Robert Olin
Bob's Water & Septic LLC
jolin@whidbey.net




Posted by jloomis on April 3, 2008, 12:43 am
Tough job.....solid insulation........cutting and installing.......
I used a sawzall mounted on a plywood board.......with blade sticking up to
cut rigid insulation.
Worked great with less dust......
screw the fence to the plywood for cut measures....push it through.....use a
rough blade.....(wood blade)
install tightly.........
4" foam foil face is good....... or larger.
or 2 layers of 4" depending on R value desired.....
jloomis
> When I built my house I insulated the the floor with R19 fiberglass batts.
> Rodents have - over the years - torn must of it down. I want to insulate
> once more and never again after that. What would be a better way to go?
> My floor joists are 2x10's.
>
> Thanks,
> RO
>
> --
> Robert Olin
> Bob's Water & Septic LLC
> jolin@whidbey.net
>
>
>



Posted by hogheavenfarm on April 3, 2008, 9:00 am
Rodents will chew into foam as well. In some cases I think tey like it
better, it tunnels easier. At least you will be able to hear them
though. Maybe you could wire screen over it? Would be expensive but it
would last. By the way, solid foam is quite expensive also. You will
need 2" foam to equal R19, and 3" foam would be better, but much more
expensive. I don't know how it compares to building up layers of
thinner foam (R5 or R10).

Posted by Kris Krieger on April 4, 2008, 2:00 pm
a1d6-92f25062faa9@i36g2000prf.googlegroups.com:

> Rodents will chew into foam as well. In some cases I think tey like it
> better, it tunnels easier. At least you will be able to hear them
> though. Maybe you could wire screen over it? Would be expensive but it
> would last. By the way, solid foam is quite expensive also. You will
> need 2" foam to equal R19, and 3" foam would be better, but much more
> expensive. I don't know how it compares to building up layers of
> thinner foam (R5 or R10).
>

If the space under tha tfloor is not to be finished and used as a room,
would it be possible for him to reinstall fiberglass, but then "drop"
small-diameter wire mesh by nailing soem sort of "spacers" to every 4th (or
so) joist, and then nail the mesh/hardware cloth to the "spacers"? It
seems to me that would keep the fiberglass out of the reach of the rats.
It'd be expensive, but less so than rat damage (and rat-related stress).

- K.

Posted by PeterD on April 3, 2008, 9:25 am
wrote:

>Tough job.....solid insulation........cutting and installing.......

What kind of solid insulation? Foam? If so cutting is easily done with
a hot wire cutter.

>I used a sawzall mounted on a plywood board.......with blade sticking up to
>cut rigid insulation.

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