Installation Details
The line items that separate a 30-year roof from a 12-year roof are mostly invisible after installation — flashings, ventilation, ice barriers. These guides cover the install-day details Trill won’t cut corners on.
Attic Ventilation Sizing
How to calculate the intake and exhaust your attic needs to avoid premature shingle failure.
Roof Flashing Explained
Where flashing matters most and how Trill installs it on every penetration.
Tear-Off vs Overlay
Why Trill almost never recommends overlaying — and the two cases where it’s defensible.
Ridge Vent vs Box Vent
Continuous ridge ventilation versus traditional box vents on Illinois roofs.
Madison County Roofing Permits
Permits, inspections, and HOA paperwork Trill handles before tear-off day.
Cold-Weather Roofing in Illinois
What’s safe to install below 40°F and what we postpone until spring.
Gutter & Roof Integration
How drip edge, fascia, and gutters tie into a watertight system.
Skylight Installation & Replacement
Replacing skylights during a re-roof saves cost and prevents the most common leak source we see.
TPO & EPDM Commercial Roofing
Single-ply membrane options for flat and low-slope commercial buildings.
Ready for a real estimate?
Trill Roofing offers free, no-pressure roof inspections across the Riverbend.