I have a wooden deck. open on all sides and covered with a v groove
tin roof. When the weather is damp I get drops of water forming on the
underside of the roof and then dropping on the deck furniture. What
causes this and how can I prevent it? Thanks for any reply

On Mon, 2 Apr 2007 07:05:21 -0400, (Herb and Eneva)
wrote:

I have a wooden deck. open on all sides and covered with a v groove
tin roof. When the weather is damp I get drops of water forming on the
underside of the roof and then dropping on the deck furniture. What
causes this and how can I prevent it? Thanks for any reply

It's condensation.
Heating the roof would stop it. Applying an insulating layer of
foam, cork, or rubber might stop it. Spraying it
with anti-fogging oil or rubbing it down with soap or wax
might help a little.
Tilting the roof enough so that the condensation can run along the low
points to drip off in a less objectionable place would probably work,
but generally I'd say just live with it. Stuff that's outside
needs to be able to take a little water.

--Goedjn

On Apr 2, 6:05 am, (Herb and Eneva) wrote:
I have a wooden deck. open on all sides and covered with a v groove
tin roof. When the weather is damp I get drops of water forming on the
underside of the roof and then dropping on the deck furniture. What
causes this and how can I prevent it? Thanks for any reply

The cause is condensation on the metal surface.

The solution is not necessarily simple if it is an open space -- what
is needed is either sufficient air movement or warmth below the roof
to keep it above condensation temperature (dewpoint) or dry the area.
If the roof had sufficient slope, could make it run to the lower edge
possibly, but w/ a shallow slope there's not much of a way to cause
that without having a collection system -- or, of course, move to a
drier climate.

On Apr 2, 12:39 pm, Goedjn wrote:
On Mon, 2 Apr 2007 07:05:21 -0400, (Herb and Eneva)
wrote:

I have a wooden deck. open on all sides and covered with a v groove
tin roof. When the weather is damp I get drops of water forming on the
underside of the roof and then dropping on the deck furniture. What
causes this and how can I prevent it? Thanks for any reply

It's condensation.
Heating the roof would stop it. Applying an insulating layer of
foam, cork, or rubber might stop it. ...

But to OP note if it's not a direct application there's at least a
reasonable likelihood in a totally unheated area of simply having
condesation above the insulation which is potentially worse in the
long run than the present problem -- at least now it will dry up when
the weather warms up/dries out.
--Goedjn