Roof Replacement in Chicago, IL

What Roof Replacement Involves

Roof replacement is not a patch job. It's the complete removal of your existing shingles, underlayment, flashing, and any compromised decking, followed by installation of a new system built to code and designed for Chicago's climate.

The process starts with a tear-off. We strip everything down to the roof deck—the structural base, typically made of OSB or plywood—and inspect it for rot, decay, or structural sag. If the deck is sound, we install a new synthetic underlayment, ice-and-water shield on eaves and valleys (required by Illinois code in climate zones 5 and up), drip edge along the fascia and soffit, and ridge vents for proper attic ventilation. Then comes the shingle installation: starter course, field course, staggered courses, all secured with ring-shank nails at the manufacturer's specification. Ridge cap seals the peak. New flashing around any penetrations—chimneys, skylights, valleys—prevents water from wicking into the structure.

This is a 25–50 year investment. We don't cut corners on materials or labor.

Materials: Choosing What Works for Chicago

Your shingle choice matters. Chicago summers heat your roof to 160°F+; winter freeze-thaw cycles stress every seal. We install architectural shingles—thicker, more wind-resistant than standard three-tabs—from manufacturers proven in harsh climates.

Owens Corning Duration Cool Series asphalt shingles reflect heat and resist granule loss from UV degradation. GAF Timberline HDZ architectural shingles are rated for 130-mph wind uplift, critical after the storms we see every spring. CertainTeed Landmark Pro comes with SureStart warranty coverage that protects against manufacturing defects.

Underlayment quality separates a roof that lasts 30 years from one that leaks in year 15. Synthetic underlayment (not felt) resists moisture wicking and won't degrade under summer heat. Ice-and-water shield—a self-adhered membrane—goes under shingles on eaves and in valleys where melt-water backs up during Chicago's ice dam season. Ridge vents allow attic air to escape, preventing blistering caused by heat buildup.

All materials meet or exceed the 2021 Illinois Residential Code (IRC). Structural changes or deck replacement require engineered drawings and municipal permit.

Signs Your Chicago Home Needs Roof Replacement

Repair won't cut it if you see these:

• Curling or cupping shingles visible across the roof surface
• Granules in gutters after rain—asphalt breaking down
• Water stains on interior ceilings or attic framing
• Missing or broken shingles after wind or hail storm
• Flashing gaps or separation from the roof deck
• Sagging roof line or visible structural movement
• Moss or algae growth covering 30%+ of the roof
• Shingles blistering or peeling in summer heat

Chicago's wind uplift from severe spring storms tears shingles clean off. Ice dam formation causes water backup under shingles in January and February. Thermal cycling from freeze-thaw cracks flashing and seals. If your roof is past 20 years or shows multiple failure modes, replacement is cheaper than repeated repairs.

The Roof Replacement Process: Step by Step

Step 1: Inspection & Permitting (Day 1)
We inspect the deck, identify any rot or structural issues, and pull a permit if required. Illinois mandates a permit for any replacement covering more than 25% of the roof surface. Structural changes need engineered drawings.

Step 2: Tear-Off & Deck Prep (Days 1–2)
We remove all old shingles, underlayment, and flashing down to the deck. Debris goes into a dumpster we provide. We inspect every inch of OSB or plywood. If rot or decay is found, we replace that section and reinforce the structure. Fascia and soffit are checked for damage.

Step 3: Underlayment & Ice Shield Installation (Day 2)
Synthetic underlayment goes down over the entire deck. Ice-and-water shield is self-adhered to eaves and valleys. Drip edge is installed along the perimeter. This layer stops water from wicking into the structure during Chicago's freeze-thaw cycles.

Step 4: Shingle Installation (Day 2–3)
Starter course along the eave, then field courses in staggered pattern. Each shingle is secured with ring-shank nails—overdriven nails cause premature failure. High wind zones require reinforced nailing patterns per code. Ridge cap seals the peak.

Step 5: Flashing & Penetrations (Day 3)
New flashing installed around chimney, vents, skylights, and valleys. Hand-sealed with roofing cement. Proper flashing prevents the leaks that rot your framing.

Step 6: Final Inspection & Cleanup (Day 3)
We walk the roof, verify all fasteners are set, check for debris, and sweep the property. We haul away all waste. Most jobs finish in 2–3 days depending on roof size and weather.

Cost & Warranty

A typical Chicago roof replacement runs $12,000–$18,000 for a 2,000 sq ft home, depending on pitch, materials, and deck condition. Architectural shingles cost more than three-tabs but last longer and resist wind better. If deck replacement is needed, add $3,000–$6,000.

Manufacturer warranties on shingles run 25–30 years for material defects. Labor warranty is 10 years from completion. We register your warranty so you're protected if anything fails prematurely.

Your homeowner's insurance may cover storm damage. We assist with insurance claims—we photograph damage, work with adjusters, and provide itemized estimates so you get the full replacement cost covered.

Chicago Climate & Your Roof

This city is brutal on roofing. Winter brings heavy lake-effect snow that loads your deck. Spring hail storms punch holes in weak shingles. Summer heat causes UV degradation and blistering if attic ventilation fails. Fall ice dams form when warm attic air melts snow on the roof edge, then refreezes as water backs under the shingles.

A properly installed roof with ice-and-water shield, ridge vents, and quality shingles survives all of it. A cheap installation fails in year 10. We build for 30 years.