Seamless Gutters, Ventilation & Drainage in Raleigh, NC
A roof is a system, and it's only as good as the airflow beneath it and the water management around it. From seamless gutters in Raleigh to attic ventilation, drainage, and flashing, Cadmus designs whole-roof performance — the unglamorous details that quietly determine whether a roof lasts its full life.
The systems that make a roof last
Serving homeowners and property owners across Raleigh, Cary, Apex, Wake Forest, Morrisville, Durham, Holly Springs & the greater Triangle.
Attic & roof ventilation
Balanced intake and exhaust ventilation is one of the single biggest factors in roof lifespan. It sheds the heat and humidity that cook shingles and rot decking from beneath — critical in North Carolina's climate.
Seamless gutters & gutter guards
Custom seamless gutters formed on site, correctly sized and sloped for Triangle downpours, with guard systems that keep leaves out and water flowing — protecting your roof edge and foundation.
Drainage & downspouts
We direct water off the roof and well away from your foundation, preventing the pooling that leads to wet basements and foundation problems.
Flashing & moisture management
Valleys, chimneys, walls, and penetrations are where roofs actually leak. We flash them properly and manage moisture so water goes where it should — off your home.
Why whole-roof performance matters
Ventilation extends roof life
An under-ventilated attic bakes shingles and traps moisture, aging a roof years before its time. Getting airflow right is one of the cheapest ways to protect your investment.
Gutters protect everything below
Overflowing gutters push water back under the roof edge and pool it against your foundation. Good drainage protects both the roof and the structure.
Done with your roof, or on its own
These systems are ideal to address during a roof replacement, but we're glad to install or upgrade ventilation, gutters, and flashing as standalone work too.
The details others skip
Proper flashing and ventilation are where cut-rate roofing jobs fall short. They're exactly where we don't.
What it looks like
A closer look at the finished result. Ask us for photos of recent projects near you — we're glad to share references in your neighborhood.
Common questions
Why is roof ventilation so important in North Carolina?
Our heat and humidity are hard on roofs. Without balanced intake and exhaust ventilation, an attic traps heat and moisture that bakes shingles from below and rots decking — often shortening a roof's life by years. Correcting ventilation is one of the highest-value things you can do for a roof here.
What are seamless gutters and why are they better?
Seamless gutters are formed from a single continuous piece of metal cut to your roofline on site, instead of assembled from short store-bought sections. With no mid-run seams, there are far fewer places to leak — and they look cleaner too.
Do gutter guards really work?
Good ones do. They won't make gutters completely maintenance-free, but a quality guard keeps out the leaves and debris that cause most clogs — a real benefit under the Triangle's heavy tree cover. We match the guard to your specific tree cover.
Can you fix drainage causing a wet basement?
Often, yes — a lot of foundation-water problems trace back to gutters overflowing or downspouts dumping water right at the base of the home. Proper drainage is one of the cheapest forms of home protection there is.
Get a quote for drainage + ventilation
Tell us a little about your property and we'll get right back to you — usually within one business day. Inspections are free and there's never any pressure.