Mill Valley weather is beautiful and hard on windows. Fog pours down off Mount Tamalpais most summer mornings, the redwoods keep the canyons shaded and damp, and winter storms drive rain against hillside houses for days at a time. Wood windows along Cascade Drive, up Blithedale Canyon and in Homestead Valley can stay wet for most of the winter, and that's when rot starts at the bottom rail and creeps into the sill. Older aluminum windows sweat on the inside on cold mornings, leaving water to sit on the frame and stain the trim. Even newer vinyl units start fogging between the panes if they were cheaply made.
We replace and repair windows all over Mill Valley, from cottages near the old downtown to hillside homes up long flights of stairs. For damp, shaded lots, vinyl windows that won't rot in the shade are the lowest-upkeep choice, and for homes where the original wood look matters, we install clad wood that sheds water on the outside. Call or send the form for a free estimate.
Fighting Moisture and Rot in Mill Valley Homes
Most of the window damage we see in Mill Valley comes from water that never fully dries out. Condensation runs down the inside of cold glass and soaks the sill. Rain works its way behind old trim on the exposed side of the house. Moss and leaf litter from the trees hold moisture right against the frame. When we replace these windows, the work below the surface matters as much as the window itself. We cut out rotted wood and rebuild the sill where needed, add flashing tape so water behind the siding drains out, and choose frames that can't rot, like vinyl, fiberglass or clad wood. Dual-pane glass with a warm-edge spacer keeps the inside surface of the glass warmer, which cuts the morning condensation that started the problem. If you have a few old windows that are still mostly sound, a repair visit may handle them for now.
Hillside Access, Views and Neighbors
Plenty of Mill Valley homes sit at the top of stairways or steep driveways where nothing gets delivered to the front door. We plan for that. Our crews carry windows up by hand, larger units get scheduled with extra help, and we protect the steps and landscaping on the way in. Hillside homes also tend to have big view windows facing the bay or the mountain, and those are worth getting right. Slim fiberglass or clad frames keep the view open, and low-E glass handles afternoon glare without darkening the room. On tight lots, we keep the work tidy and keep noise down for the neighbors. We do the same careful hillside work just over the ridge in Sausalito, where steep access and bay views are just as common as they are here.
Common Questions
Yes. A lot of Mill Valley homes are reached by stairs or a footpath, and we carry windows in by hand. We look at the route during the estimate, plan the crew around it, and schedule larger units for a day with extra hands. If a very large picture window needs special handling, we'll tell you up front.
Cold glass meeting damp indoor air. On foggy mornings, single-pane glass and old aluminum frames get cold enough that moisture in the house condenses on them, the same way a cold drink sweats. Dual-pane glass with a warm-edge spacer keeps the inside surface warmer and cuts most of it. Running the bathroom fan and kitchen hood helps too.