Metal shed floor & condensation

shianeOctober 5, 2013

Our 17 year old steel shed was installed directly on the ground. The steel shed is 10 x 15 with an attached steel floor. We understand that it should not had been installed directly over soil. One corner of the floor has rusted out - we have put heavy steel sheets over that area. We have emptied out and are revamping the shed. We sanded all rust, primed with red oxide, and painted with oil-based rustoleum enamel (inside and out). We lined and glued Styrofoam sheets to the ceiling to stop condensation. We are thinking of covering the steel floor with vinyl (from our old pool) and placing flakeboard or plywood over that in order to stop condensation from the ground. We know that the floor will probably eventually rust from being covered with vinyl but we are trying to cut down the condensation (which is very bad). We really want the shed to last another 20 years since if we replace it we must go with one that is much smaller (the town has grandfathered in this shed).
What do you all think we should do?

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I don't see the floor lasting 20 more years with that plan. If you are able to lift the building to alow air circulation between earth and floor,that will extend life of floor. If the size restriction is the only reason you arn't replacing the shed,"remodel it". Chances are you can all but build a new shed as long as you preserve some of the origional structure. Get a copy of the ordinance and read it to see if it forbids preserving non-complaince structures. Douptful since that would mean they would be an eyesore on the way to becoming unservicable. The ordinance likly says the structure must be kept in good repair which would be your permission to do the remodel.

    Bookmark   October 7, 2013 at 11:34AM
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toolbelt68 (7)

You have to get air under the floor AND stop the transfer of cold through it. Metal flooring is an excellent heat/cold transfer medium. I would get rid of the metal floor and use wood only with air vents along the outer edges of the shed. You would also want to cover the ground with a sheet of plastic to stop water vapor. That plastic will have to be attached to the walls so no gaps are present. Study up on how they do craw spaces and you will know what you need to do. That may mean that you'll have to raise the floor or the shed a tad for air vents. (keep the critters out!!) Spay insulation is better than sheet as it doesn't leave an air gap.

    Bookmark   October 16, 2013 at 7:20PM
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Maybe cut out the metal flooring and fill it in with cement?

    Bookmark   October 22, 2013 at 12:12AM
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... oops
Good luck with what you did or are still planning


This post was edited by AnEv942 on Fri, Nov 15, 13 at 19:41

    Bookmark   November 12, 2013 at 7:56PM
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