Roofing Macomb MI: Skylights, Chimneys, and Flashing Essentials

Roofs in Macomb County have a hard life. Lake-effect snow grazes the area, spring brings long wet spells, and winter throws repeated freeze-thaw cycles at every joint. Those conditions punish skylights, chimneys, and the flashing that ties everything together. If any one of those details fails, you do not just get a drip, you get wet insulation, stained drywall, and softened sheathing. I have climbed enough ladders after storms in Shelby, Sterling Heights, and Macomb Township to know that most “roof leaks” are not shingle failures, they are flashing issues.

This guide breaks down what matters most around skylights and chimneys, shows how flashing should be built, and explains how local conditions shape the right choices. Whether you are planning roof replacement Macomb MI, adding a skylight over a dark hallway, or trying to stop a chronic chimney leak, the same principles apply: use the right components, lap them in the right order, and respect water’s stubborn habit of finding the one open seam.

How Michigan winters shape the details

On a still day in July, almost any roof looks fine. The test is January and March. Snow packs on eaves, melts under sun, refreezes overnight, and creeps under loose seams. Ice dams form where attic heat warms the deck above exterior walls. Macomb’s winds push rain uphill on low slopes more often than homeowners realize. I have seen wind-driven rain travel two feet up-slope under an old valley.

Those realities drive three practices that are non-negotiable in roofing Macomb MI:

Ice barrier at the eaves, typically a self-adhered membrane extending from the fascia up past the interior warm wall line. In most homes, that works out to two full courses of ice and water shield, about 36 to 72 inches from the eave. On shallow overhangs or deep wall lines, you need to verify the measurement rather than guess. Proper ventilation and insulation balance to cut ice dams. If your attic is 20 degrees warmer than outside on a cold day, you are priming the deck for melt and refreeze. Separate soffit intake and ridge exhaust help, but only if baffles keep insulation from blocking airflow at the eaves. Flashing that treats every change in plane as a water challenge. At chimneys, sidewalls, skylights, and valleys, you build a system, not a dab of sealant. If I can peel a flashing back with two fingers, water can too.

Skylights that last through freeze-thaw

Skylights get a bad reputation from the 1980s, when builders popped them on low slopes with minimal flashing, then tried to fix the leaks with caulk. Modern units are better. With the right slope, flashing kit, and underlayment, you can have a skylight that stays dry for decades.

Start with slope. Most deck-mounted skylights call for a minimum pitch of about 3 in 12. Curb-mounted units can sometimes go lower because the curb raises the glass out of the water flow. If your roof pitch is shallow, do not force a deck-mounted skylight. On very low slopes, midslope skylights are simply a bad bet. A light tube or a vertical gable window will deliver daylight with less risk.

I have replaced many older units in Clinton Township where the glazing seal failed, fogging the pane. Glass itself rarely leaks at the frame when installed correctly. It is the surround that matters: a factory flashing kit sized to your shingles, layers of self-adhered membrane, and honest shingle weaving.

A good skylight install looks unremarkable from the ground. That is a compliment. The ice and water membrane runs up the sides, across the head, and wraps the sill according to the manufacturer’s diagram. The step flashing on the sides alternates with shingles, each piece lapped over the one below and set so water is always moving onto the next shingle, never toward a seam. The head flashing at the top is generous, and the bottom pan sheds water onto the field cleanly, not into a pocket.

If you are choosing features, low-e glass is standard and worth having for our mixed climate. Venting skylights help in second floor bathrooms and kitchens where summer humidity piles up, but you need a clear path for the sash to open and proper insect screening. Solar or electric blinds can tame glare in south-facing rooms. Plan how you will access that skylight later. Counting on a ten-foot ladder over a stairwell to clean or adjust blinds gets old.

When a roof replacement Macomb MI project includes new skylights, I advise homeowners to replace the unit at the same time if the glass is more than 15 years old. You will already have the shingles off, and the flashing kit is part of the system warranty. Spending a few hundred dollars on the new unit now beats tearing into a finished roof five years later.

Chimneys, crickets, and the truth about counterflashing

Chimneys are the leakiest objects on most roofs. They collect runoff, interrupt the shingle field, and their masonry cracks under thermal movement. The cure is not a thick bead of black goo. The cure is two layers of metal working together: step flashing and counterflashing, sometimes helped by a saddle, also called a cricket.

Step flashing is the lower layer that interlaces with each shingle course along the chimney sides. Each L-shaped piece sits on the shingle below and against the brick, then the next shingle laps over it. The head of the chimney gets a large pan flashing that tucks under the course above. The sill gets a front apron that pushes water back onto the shingles. If a roofer slides in a single continuous strip instead of individual steps, they have cut corners. Big strip, big leak later.

Counterflashing is the upper layer that covers the vertical legs of the step flashing. In masonry, you do not glue this to the surface and hope. You grind a reglet, a shallow groove in the mortar joint, insert the counterflashing, and seal that joint. Now the counterflashing can move a bit with the masonry without opening a gap, and wind cannot lift its edge. On vinyl or fiber cement siding, you integrate the counterflashing with the housewrap and the siding’s J-channel or trim. On stucco, you cut a proper kerf and install a two-piece flashing so you do not crack the cladding.

A chimney wider than about 30 inches on the upslope side benefits from a cricket. Water rolling down the roof hits the back of a wide chimney like a snowplow meets a drift. A small, properly flashed saddle splits and diverts that flow. You frame the cricket off the roof deck, sheet it, ice and water shield it, then step flash its sides and cap it at the ridge line against the chimney with head flashing under the counterflashing. I see too many “crickets” that are more like decorative bumps. Make it tall enough to divert snow and ice, not just look busy.

Masonry itself needs care. If the mortar is soft or the crown at the top of the chimney is cracked, you are inviting water that no flashing can fully stop. Tuckpointing loose joints and recasting a sloped concrete crown with a proper drip edge around the flue line helps as much as any metal work. A stainless or copper cap keeps critters out and slows rain entry. Galvanized caps rot quickly near the lake air and with flue exhaust, and they stain brick.

Flashing is a system, not a tube of sealant

Most leaks I have diagnosed in Macomb County trace back to flashing that was nailed in the wrong place, overlapped backward, or “sealed” with mastics that failed under sun. Flashing should direct water via gravity, not glue. Use sealant only to close small, shielded joints that already have redundant protection.

Along sidewalls where a roof meets siding, the correct build is a sequence: underlayment first, then step flashing with each shingle course, then a continuous counterflashing tucked behind the siding or integrated with trim. You do not rely on J-channel alone. On older homes with wood lap or brick veneer, step flashing should be visible as a neat sawtooth if you get your eye along the eave. If you see a single continuous strip or lots of black tar, put a bucket in the attic and call a pro.

Valleys deserve respect. In Macomb neighborhoods where large ranches have long valleys, open metal valleys shed ice and debris better than closed-cut shingle valleys. A 24 inch wide valley metal with a center rib or W profile minimizes water crossing mistakes. Ice and water shield under the full valley width is worth the added cost. If you prefer a closed valley, keep those diagonal cuts clean and avoid driving nails too close to the valley centerline.

Around penetrations like plumbing stacks and exhaust vents, choose flashings that match the shingle life. The black rubber donut style on a PVC vent often cracks after 8 to 12 years. Upgrading to a silicone or metal boot gives you more time. I have swapped dozens of failed rubber boots on otherwise healthy shingles Macomb MI, and every one could have been avoided with a higher grade boot. On metal chimneys or B-vent terminations, use the manufacturer’s specified storm collar and high temperature sealant, then make sure the collar slopes to shed water, not hold it.

Materials that make sense for Southeast Michigan

Galvanized steel flashing used to be the default, but it rusts around chimneys and salt-laden air drifts off Lake St. Clair in winter. Aluminum is fine for sidewalls and step flashing against siding, but it can react with some masonry and it dents easily. Copper is superb around chimneys and in valleys. It costs more up front, but I have seen 40-year-old copper flashings on brick chimneys in Fraser that still look and perform like they were installed last decade. If the budget allows, put copper at the chimney and step flashing where brick is involved. Use color-matched aluminum at sidewalls under siding. Stainless shows up on high-heat flues and coastal projects, but it is overkill for most roofs here.

Underlayments matter more than marketing claims. A synthetic felt with high tear strength keeps crews safer and stands up to sudden storms better than 15 lb felt. Self-adhered membrane belongs at eaves, valleys, around skylights, and at chimneys, extending at least six inches beyond the flashing footprint. In reroofs, I like to run a bed of ice and water shield up the sides of a skylight and across the head regardless of pitch, even with a factory kit. Redundancy is cheap insurance.

When to repair and when to replace

Homeowners call with a drip and ask for a quick fix. Sometimes you can stop a leak by resetting a few step flashings or replacing a vent boot. Other times, the shingles are brittle, the underlayment is torn, and any patch will rip the surrounding field. Real judgment comes from the fingertips on the roof, not a photo from the sidewalk.

If your asphalt shingles are over 18 to 22 years old, shingles Macomb the granules are thin, and you are seeing curling or cracking, a new flashing job will try to stick to a failing field. That money belongs in a proper roof replacement Macomb MI, not a bandaid. On the other hand, a ten-year-old roof with a leaky chimney often needs only a new counterflashing and cricket to give you another decade. I once rebuilt the flashing on a 12-year-old dimensional shingle roof in Harrison Township for a family with a persistent fireplace leak. We added a copper counterflashing, framed a cricket, and extended ice and water shield up the slope. The roof is still going after eight winters, no stain since.

Skylights follow a similar pattern. A 25-year-old skylight with fogged glass deserves replacement during a reroof, not a reflash on tired shingles. If the skylight is modern and tight, but the bottom pan was never integrated with the shingles correctly, reworking the flashing can be enough.

How gutters and siding tie into roof performance

Roofs do not work alone. Gutters move water off the eaves quickly. Siding protects the walls where the roof dies into them. I have seen roof Macomb MI projects hobbled by undersized or mispitched gutters that overflow into the soffits. When ice dams form, that water can flow backward into the attic through the top of the fascia if there is no proper drip edge and gutter apron.

A drip edge at both eaves and rakes is not optional in this climate. It stiffens the shingle edge, keeps wind from pushing rain under the starter course, and directs water into the gutters. A wide gutter apron helps bridge any gap between deck and fascia, especially on older homes where deck boards stop short. When you replace gutters Macomb MI, check that the first hanger is close to the corners and that downspouts are not dumping onto lower roof planes in a way that overloads a valley. Splashing one valley with two stories of water is a recipe for early shingle wear.

Against siding Macomb MI, any roof-to-wall intersection should have visible, crisp counterflashing or a properly integrated kick-out flashing at the bottom. Kick-outs matter at the start of a sidewall, where water traveling along the step flashing needs a strong nudge into the gutter rather than behind the siding. Rotting sheathing at outside corners usually starts where someone skipped that small metal part.

Picking the right shingle and knowing what “warranty” really means

Architectural asphalt shingles dominate in roofing Macomb MI, and for good reason. They handle wind better than old three-tabs and hide small deck imperfections. Pay attention to the nailing zone and the number of nails per shingle for our wind events. Put four nails on a calm cul-de-sac roof, and you will be fine most years. Put six on an open site near fields or the lake.

Impact-rated shingles exist, but hail in Macomb County is typically smaller than in the Plains. If you have trees dropping limbs or a lot of acorn impact noise on your roof, an impact shingle can help, but do not expect lower premiums unless your insurer recognizes that specific rating. Algae-resistant granules keep streaks away on north slopes. In shaded subdivisions, that feature is more than cosmetic. A blackened roof runs hotter and holds moisture.

Warranty language trips people up. The big number on the shingle wrapper is a limited lifetime on materials, which means defects in the shingle itself. It does not cover a chimney leak from bad flashing. System warranties from a roofing company Macomb MI can cover workmanship and accessory parts if the installer uses a matched set of components and is certified. Read the coverage period for labor. Five years of workmanship from a roofing contractor Macomb MI who answers the phone is worth more than a thirty-year material warranty printed in gold ink.

Planning a skylight addition the right way

Homeowners love the idea of daylight pouring into a dark hallway or kitchen island. A good skylight transforms a room. The mistake is dropping a bright hole into a poorly ventilated, low-slope area just above a bathroom or over a shallow rafter bay filled to the deck with batts. The roof sweats, the curb sees ice, and you start chasing a problem with dehumidifiers.

Here is a brief planning checklist I walk through before cutting a hole:

Confirm roof pitch and rafter layout. Aim for at least 3 in 12 on deck-mounted units, and ensure the opening fits cleanly between rafters without hacking structural members. Map attic ventilation. Add or improve soffit and ridge vents if the area runs hot in winter. Baffles at the eaves keep air moving. Choose curb- or deck-mounted based on slope and snow load. Use the manufacturer’s flashing kit that matches your roofing material. Lay out interior shaft finishes. A light well with smooth, light-colored drywall spreads daylight better than a narrow, dark tunnel. Budget for blinds or glazing options to control summer heat. South or west exposures can make a kitchen too warm without shade.

Seasonal maintenance that pays off

Waiting for a leak to show up in the living room is the most expensive way to maintain a roof. Small, regular inspections catch issues when a one-hour fix is enough. After big wind or a heavy ice season, I do a quick two-part check.

From the ground, walk the perimeter. Look for shingle tabs lifted or missing, loose ridge caps, stained soffits, or gutters that are pulling away. Binoculars help spot cracked vent boots or mossy valley edges. In the attic on a bright day, look for daylight alongside chimneys and skylight curbs, water stains on the sheathing near valleys, damp insulation at the eaves where ice dams back up, and rusted nails that show chronic moisture.

A roofing contractor Macomb MI with a maintenance program will often include sealing minor nail pops, re-caulking small accessory flashings, and clearing debris from valleys during these visits. If your roof is ten years old or more, that service usually costs less than a dinner out each year and saves you from ceiling repairs.

What a thorough flashing job looks like on a reroof

On a typical one-story ranch in Macomb Township with a brick chimney, two skylights, and ten roof-to-wall intersections, the sequence that leads to a dry, long-lived roof goes like this. Tear off all old shingles and underlayment down to the deck. Replace any soft or delaminated sheathing, not just the bad corner. Install drip edge at eaves, then ice and water shield to the right height up the slope, then synthetic underlayment above. Set new skylights if planned, integrating self-adhered membrane around each curb or frame per the manual, and use factory flashing kits with proper side steps and head pieces. In the valleys, run full-width membrane and install the chosen valley metal or prepare for a clean closed-cut. Along all sidewalls, step flash with individual pieces, then install continuous counterflashing that ties behind the siding or into a kerf on masonry.

At the chimney, frame and sheath a cricket if width calls for it. Lay ice and water shield on the upslope side and along the sides where steps will go. Install step flashing on the sides with each course, a head pan on the upslope side, and a generous apron at the downslope. Cut the mortar joints and install copper or heavy gauge steel counterflashing into the reglet, then seal the joints with a quality masonry sealant rated for movement. Cap with a new chimney crown or repair the old one, add a stainless cap sized to the flue, and check the flue liner height.

Finally, set shingles Macomb MI to the manufacturer’s pattern, mind the nailing zone, and keep nails out of flashing lines. Use six nails per shingle in open exposures. Finish with ridge vent if appropriate, covered by matching ridge caps. Tie the drip edge cleanly into the gutters Macomb MI with a wide apron, check the gutter pitch with a level, and add a kick-out flashing where the roof meets a wall at the gutter start. The result is not flashy. It is quiet, well-lapped metal where water has nowhere to sneak.

Hiring the right partner

Credentials matter, but so does attitude. You want a roofing company Macomb MI that talks about details without rushing. When you ask how they flash a brick chimney, listen for “step flashing and counterflashing” and how they cut the mortar joint. If you hear “we use lots of sealant,” keep looking. Ask to see photos of a cricket they built. On skylights, ask whether they use factory flashing kits and how they integrate ice and water shield. On sidewalls, ask about kick-out flashings and how they handle housewrap behind siding during a reroof.

Good contractors document their work. I send homeowners a small pack of photos from the roof deck during the job. It shows the ice barrier coverage, the skylight layers, and the chimney counterflashing set in the reglet. It is not a marketing gloss. It is proof that the permanent parts you cannot see were built right.

Final thoughts from the ladder

Flashings and penetrations decide whether a roof survives twenty winters or ten. The shingles on the open field get the camera time, but it is the hour spent fitting step flashing tight to a chimney, or slicing a clean reglet for copper counterflashing, that saves a ceiling months later. In this climate, shortcuts show up fast. If you treat every skylight, chimney, and wall intersection like a small roof of its own, with layered defenses that favor gravity and ignore guesswork, you will sleep better in the next storm.

If you are planning roof replacement Macomb MI, or you are tired of mopping around a skylight after wind-driven rain, look closely at the details in this article. Ask direct questions. Respect what the weather here does to a roof. And build the parts you cannot see just as carefully as the parts the neighbors admire from the sidewalk.