I have installed a new four seasons sunroom attached to my house. I live in Ontario with hot summers and freezing winters. During the fall, a strong smell of dampness began to develop. It has lessoned since the onset of freezing temperatures. My concern is with the small holes in the track of the windows which are designed to carry the water away during a rain storm. When we experience a driving rain, the water cannot flow away fast enough down the small holes. Instead, the water overflows out of the track and down the wall onto the floor. I think the tubes in the wall are clogged with dirt and consequently holding in water. This stagnate water in the wall is creating the undesirable smell. Has anyone else experienced this issue?