Attic Ventilation, Ice-Dam Prevention & Skylights in Metro Detroit

If your roof grows a wall of ice along the eaves every January, or your ceilings show brown stains after each freeze-thaw swing, your attic ventilation is almost certainly out of balance. In Michigan's climate, warm attic air and cold eaves are a recipe for ice dams, condensation, and shingles that age out years early. We diagnose the whole system — intake, exhaust, insulation, and flashing — and fix the cause, not just the symptom.

Why Michigan Winters Are So Hard on an Under-Ventilated Roof

Metro Detroit roofs take a beating that milder climates never see: heavy snow load, weeks of lake-effect moisture, and freeze-thaw cycles that can swing above and below freezing in a single day. When an attic isn't vented properly, heat leaking up from your living space warms the roof deck. Snow melts near the ridge, trickles down to the cold overhangs, and refreezes into an ice dam that traps meltwater behind it — and that trapped water works its way under your shingles and into the house.

The same trapped attic heat and moisture do quieter damage year-round. Warm, humid air hitting a cold roof deck condenses into frost and drips, which soaks insulation, feeds mold and mildew, and rots sheathing. It also cooks your shingles from underneath in summer, so they curl, blister, and lose granules long before they should. Good ventilation is one of the cheapest ways to protect an expensive roof.

• Ice dams that back water up under shingles and stain ceilings and walls
• Attic condensation, frost, and the mold and wood rot that follow
• Soggy, matted insulation that stops doing its job
• Premature shingle aging — curling, blistering, and granule loss
• Higher heating and cooling bills from an attic that can't breathe

Balanced Ventilation Done Right: Ridge Vents, Soffit Vents & Airflow

A healthy attic breathes from bottom to top. Cool outside air enters low at the soffits (intake) and rises out through the ridge (exhaust), carrying heat and moisture with it. The key word is balanced — intake and exhaust have to be matched. We've walked plenty of Detroit-area attics where someone added a ridge vent but the soffits were painted shut or stuffed with insulation, so the roof was quietly pulling conditioned air out of the house instead of venting the attic.

We look at the whole picture and size the system to your roof, then keep the airflow path clear from soffit to ridge so it actually works in a Michigan winter.

• Continuous ridge vent paired with adequate, unblocked soffit intake
• Baffles (rafter vents) that keep insulation from choking off the soffits
• Correcting mismatched or competing vents that short-circuit airflow
• Gable, box, or powered venting where the roof design calls for it
• Insulation and air-sealing review, since ventilation and insulation work as a team

Ice Dams: Prevention First, Safe Removal When You Need It

The real cure for ice dams is keeping the roof deck cold and even — that means balanced ventilation, enough attic insulation to stop heat loss, and a self-adhering ice-and-water shield membrane along the eaves and valleys during a re-roof. Michigan code and common sense both point to that membrane at the vulnerable edges, and it's your last line of defense when the weather turns brutal.

When a dam has already formed, please don't climb up and chip at it with a hammer or shovel — that's how shingles crack, gutters bend, and people get hurt. Roof rakes and calcium-chloride pucks help from the ground. For a dam that's already leaking, low-pressure steam is the safe way to melt it without harming the roof. When our schedule allows, we can get out to help.

• Ice-and-water shield along eaves and valleys during any re-roof
• Attic insulation and air-sealing to cut the heat loss that starts dams
• Balanced venting to keep the whole deck at one cold temperature
• Safe, low-pressure steam removal for dams that are actively leaking
• Honest guidance on what to handle from the ground versus leave to us

Skylights: Installation, Replacement & Fixing Old Leaks

A skylight brings real daylight into a dark hallway, bath, or stairwell, but it's also a hole in your roof — and in this climate, the flashing around it is where trouble starts. Curb-mount and deck-mount skylights each have their place, and for interior rooms with no straight line to the roof, a sun tunnel (tubular skylight) pipes daylight down through a reflective shaft without a full framed opening.

Most skylight leaks aren't the glass — they're worn flashing, failed seals, or a unit that has simply aged past its prime after years of freeze-thaw. If you're already re-roofing, that's the smart moment to replace or fully re-flash any skylight, because the surrounding roof is open and the labor overlaps. Doing it later as a standalone repair almost always costs more and risks disturbing new shingles.

• New skylight installation — curb-mount and deck-mount options
• Replacing old, fogged, or leak-prone units with modern flashed models
• Sun tunnels to daylight interior rooms with no direct roof access
• Re-flashing and resealing existing skylights during a re-roof
• Diagnosing whether that ceiling stain is the skylight or the roof around it

What's included

• A full attic-and-roof ventilation assessment measuring intake against exhaust
• Ridge, soffit, gable, or box vent installation and correction sized to your roof
• Baffles installed to keep insulation from blocking soffit airflow
• An attic insulation and air-sealing review to stop the heat loss that feeds ice dams
• Ice-and-water shield membrane along eaves and valleys on re-roof projects
• Safe low-pressure steam ice-dam removal when our schedule allows
• Skylight installation, replacement, and flashing/leak repair
• Sun tunnel (tubular skylight) installation for interior rooms