frequently asked questions

Drip edge is metal flashing installed along eaves and rakes that directs water away from fascia and sheathing. Without it, runoff can wick behind gutters and trim, slowly rotting the fascia and decking wood along the edges of the roof.

Yes, branches that rub against shingles scrape away granules, and shaded areas stay damp longer, which encourages moss. Falling leaves also clog valleys and gutters, so trimming limbs back several feet from the roofline helps protect the roofing materials.

Skylights are safe when flashed correctly, but they add another opening where water can enter. Most skylight leaks trace back to failed flashing, aging seals, or condensation, and replacing the flashing during a reroof keeps both systems working together.

Squirrels, raccoons, and birds can chew through vents, soffits, and roof edges to reach warm attic spaces. Their openings let water inside too, so any sign of animal activity near the roofline should be checked and repaired quickly.

Those streaks are usually algae called Gloeocapsa magma, which feeds on limestone filler in many shingles. The growth is mostly cosmetic, though algae-resistant shingles with copper granules help prevent it from returning after a gentle cleaning or full replacement.

From the ground, look for missing or lifted shingles, bent flashing, loose vents, and debris on the roof. Inside, check the attic and ceilings for fresh stains, and avoid climbing up yourself while surfaces may still be unstable.

Coverage depends on your policy and the cause of damage, with sudden storm damage more commonly covered than normal wear. Illinois law requires homeowners to file their own claims, so review your policy details and deductible with your insurance agent.

Most municipalities require a permit for roof replacement, and Illinois requires the roofer's license number on every permit application. DOGGOS ROOFING PLLC in Northlake, IL lists that number on every bid and contract, so the paperwork is ready when a permit is needed.

Pitch determines which materials can be used, so a steep main roof may carry shingles while a nearly flat porch needs a membrane. Combining materials correctly depends on careful, well-sealed flashing wherever the two different systems meet each other.

A cricket is a small, peaked structure built behind a chimney or on a flat roof to divert water around an obstacle. Without one, water and snow collect against the obstruction and eventually find a path underneath the roofing.

A roofing square equals 100 square feet of roof surface, and roofers price materials and labor using that unit. A typical home might need anywhere from 15 to 30 squares, depending on its overall size, pitch, and roof layout.

Be cautious of door-to-door crews that appear after storms, pressure you to sign quickly, or ask for cash. Verify the contractor's Illinois license, confirm a local street address, and never sign a contract that still has blank spaces.

Ice and water shield is a self-adhering waterproof membrane that seals around nails, while standard underlayment is a water-resistant layer that is mechanically fastened. The shield goes in vulnerable areas, and underlayment covers the rest of the deck.

Replacing a roof in sections is possible, especially on buildings with separate wings or roof planes. At DOGGOS ROOFING PLLC in Northlake, IL, we have planned phased projects for 13 years, making sure each finished section ties in watertight.

Manufacturer warranties typically cover defects in roofing materials, while workmanship coverage addresses installation errors. Read both carefully and watch for exclusions, since some warranties exclude common conditions like high winds, so you know exactly what protection you are receiving.