Signs of Soffit Damage and What They Mean

You can spot most soffit damage without climbing anything, as long as you know what you're looking at. Soffit is the underside of the eave, the panels that close the gap between the edge of the roof and the wall of the house. It keeps weather and animals out of the roof cavity, and vented panels let the attic breathe. Once it sags, rots, or gets torn open, moisture and pests have a way into the attic.

Because it faces down, it's easy to go years without really looking at it. Pick a bright day and walk the whole outside of the house. Binoculars or the zoom on your phone camera make a second-story eave easy to check.

Sight down each run the way you'd check a board for straightness. Look hardest at inside corners, the spots under roof valleys, and anywhere a gutter has spilled over. Older homes with deep eaves, like the ones in Old Town Longmont and around downtown Brighton, have more soffit to keep an eye on.

Wood and plywood soffit rots from water, and the water usually comes from above. A gutter that overflows, leaks at a joint, or backs up behind an ice dam soaks the edge of the soffit every time it happens. Old plywood soffit delaminates as it stays wet, with the layers separating and drooping until whole pieces drop.

Peeling paint is often the first thing you'll notice, so read it carefully. The Colorado sun peels paint on south- and west-facing trim on its own, which means peeling by itself doesn't prove rot. Peeling that comes with swelling or a soft feel points to water.

Water stains show you where to look. Brown rings or streaks on the soffit, especially below a gutter corner or seam, mean water is running where it shouldn't. Stains that show up after a snowmelt can point to ice backing water up at the eave.

If you can safely reach a suspect spot from a ladder, push up gently on the panel. Wood soffit that flexes or crumbles at the edge has rot behind the paint, and the soft area usually runs farther than the stain does.

A soffit line that used to be straight and now dips or waves has lost support somewhere. Panels sag when the framing they're fastened to rots or pulls loose, and old plywood soffit droops as the sheet itself comes apart.

Aluminum and vinyl soffit won't rot, but the wood they're nailed to can. A panel that bows or slips out of its channel for no obvious reason often points to soft framing behind it.

Wind is the other common cause. Downslope gusts near the foothills in Boulder, Golden, and Louisville, and plains wind across open lots in places like Firestone and Dacono, catch any loose panel and peel it back a little farther each time. A panel that's flapping or hanging open leaves a gap for water and animals.

Any opening in the soffit can become a way in. Birds nest in the gaps, wasps build under the eave and work their way inside, and squirrels chew the edges of a small hole until they fit through it. Woodpeckers will also drill new holes in wood soffit and trim.

Before a gap gets closed, make sure nothing is still living in there. A squirrel sealed inside will chew a new way out, and an active wasp nest should be dealt with before anyone opens up the panel. Watch for these clues:

Your gutters hang on the fascia, the long trim board at the roof edge, and the soffit runs from the wall of the house out to the back of it. The same water reaches both. A gutter that overflows behind its back edge, a missing drip edge, or snow sitting against the board soaks the fascia first, and the water runs down into the soffit from there.

That's why rot rarely stays in one board. Gutters sagging between hangers or screws backing out are worth treating as a soffit warning too, and a stained or sagging soffit is a good reason to check the fascia above it.

When both are damaged, it makes sense to repair them in the same visit, since the gutter has to come down for the fascia work anyway. A few bad soffit panels can be replaced to match. If the whole run is soft, or the wood behind it has rotted, replacing the run makes more sense than chasing the damage piece by piece.

If your walk-around turned up any of these signs, Ethan can repair the damage, from a few matched panels to a full run of vented aluminum or vinyl soffit.