I have a problem with a Champion pation room that's been added to our house. Here's a link that almost shows one:

almost there

Click on 'sun rooms' to see a picture.

We love our sunroom except for one thing. When it rains, the clattering noise on the roof is just awful. In fact, during a thunderstorm, we can't stand to be in there.

I've tried writing to Champion, and I've called our local franchise, but they don't respond. Does anybody know of a lightweight, sound- absorbing roofing material that could be put on top of the sunroom?

You might worry that this will invalidate our guarantee, but the guarantee doesn't seem to be worth much anyhow.