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> We have a heat pump. The compressor is outside; the air handler is
> inside, in an unfinished attic. I.e., there is no flooring and access
> is through a "hatch" reached by a ladder.
>
> Every time someone goes up there, to service the air handler,
> install an attic fan, etc., the heads of nails holding the ceiling to
> the joists "pop" through the ceiling below, making a very noticeable
> dimple in the paint, and occasionally breaking through. It's a real
> drag having this happen every time someone goes up there.
>
> Is there some way to prevent this from happening?
>
> I thought that if I were able to floor part of the attic, i.e., the
> areas where these servicemen need to walk in order to access the air
> handler, might this spread the load somewhat and perhaps prevent these
> dimples from forming every time they go up there?
>
> If so, what thickness of particle board should I put down?
>
> If folks think this won't do the trick, what might???
>
> Many thanks,
> Bob