Decks, Patios, Porches and Docks - Covered Porch in MDF

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gvogt
04-16-09, 05:50 PM
I have a covered porch and the ceiling is MDF. Can I attach a siding procuct to this ceiling, ie can I attach siding to MDF?

chandler
04-16-09, 08:02 PM
Welcome to the forums! You will notice moisture deterioration in short order on the MDF, since it is exposed to the elements. I would opt to remove the MDF and install another product more suitable for exterior applications.
lefty
04-17-09, 10:23 PM
MDF is an INTERIOR product. Even putting it in an enclosed exterior location, like a patio or sunroom, where moisture is present and the humidity varies will destroy it in short order.

Wirepuller38
04-18-09, 05:58 AM
Remove the MDF. Install 1x4 strips 16 in oc to the ceiling joists. Attach the vinyl soffit material to the 1x4 strips.