Rebuilding the ‘eat in’ porch at the cottage this summer. Rafters will be 2×6, 16″ o.c. with R15 in the rafter bays. Thinking some kind of prefinished 4’x8′ material would be most cost effective and lowest maintenance.
Question is what minimum thickness should I be looking at to avoid sag?
Let’s not confuse the issue with facts!
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More info?
Is this a screened porch?
Why the insulation?
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Seasonal cottage. Fully enclosed, adding 8 30x54 casements along with 2 doors. Rarely there in winter, but figure now is the time to insulate the ceiling, warm or cold season.Interior walls will be V-Joint T&G pine butted tight to the window jambs (which are 1 3/8" thick).Want something that will not sag and hopefully prefinished so there will be less maintenance, read painting. Cottage boat access only.Was thinking of 1/2" MDF but know how heavy it is.Let's not confuse the issue with facts!
Why not v-joint pine?Goes up easy and not a bit of maint required. common for camps here.
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Sure - come up with a logical, appropriate, complimentary idea!Let's not confuse the issue with facts!
Or random width pine planks with a light stain (white, blue, green etc) with a coat of water based poly to seal it. Nice and somewhat rustic.
1/2"
my FIL's cottage uses 4x8 sheets of white styrofoam (1" thick I would think) with 1/4" x 1" strips at the joints. He bought it like that and it looks surprisingly good...although I probably would not have used it myself.
Your father sounds a lot like my old man, do it on the cheap! Course the extra layer of insulation probably never hurt anyone in your neck of the woods, my place is just outside of Sudbury Ontario.
Let's not confuse the issue with facts!
1/2" ply won't sag, get the good stuff, the 5 ply with one side good and then trim out with 1x2 for a board and batten look on the cheap.
if you cut to size and pre-paint on saw horses before installation it won't be so bad, or you could use a stain, easy to touch up as time goes by. any wood outside will require some kind of finish won't it? even if it is under the porch?
I was thinking of 3/8" MDO but it doesn't seem to exist north of the border, or perhaps only the fancy folks here is Ct can afford the stuff.
I do miss North Carolina Segundo.The exterior will be rough cut beveled cedar lap siding - with many coats of linseed oil. The cottage, I'm only the second owner - is over 50 years old and the original cedar siding - plus what we have added - looks like it will last for ever with coats of double boiled linseed oilLooking forward to spending some time in my homeland
Let's not confuse the issue with facts!