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Old 11-19-2009, 07:18 PM   #1
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Could I use MDF to reproduce exterior wood siding?


Rookie question maybe....

But the high content of non-biological additives (and low price) have pushed me to ask you guys:

Would it be a good/Bad idea to reproduce some damaged exterior wood siding in MDF? Ripped, Routered and coated in a good ext. paint.

I googled and all I could find was a comparison between different types of MDF. Not a "fiberboard Vs. real wood" comparo.

* Here's some of that info in case anyone is interested (or can tell the wood content of the MDF you are buying?)
Good Luck: http://www.woodweb.com/knowledge_bas...nsity_fib.html


Main Question - Can painted MDF stand up to exterior use?


Thanks for any info guys!

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Old 11-19-2009, 08:10 PM   #2
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Could I use MDF to reproduce exterior wood siding?


Bad idea.

MDF is not intended for high moisture areas. There is a water resistant MDF manufacture, the brand name eludes me at the moment. But I believe the indented purpose is occasional water contact such as a sink leak, not exterior applications.

What profile do you need to match?

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Old 11-19-2009, 09:03 PM   #3
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Could I use MDF to reproduce exterior wood siding?


MDF cannot be used for exterior application. MDO can but would not be a good selection. Use Azek sheets. You can shape it to anything you like, paint to match other trim and it will not rot or attract insects.
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