How to find the right Roof Caps AI guide

Broan-NuTone: Roof caps sized for its bath and range hood fans.
Lomanco: Long-established maker of roof vents and exhaust caps.
Air Vent: Broad line of roof and ridge vents.
Master Flow: Widely stocked roof vents and exhaust caps.
Deflecto: Common source for dryer vent hardware.
GAF: Seal-A-Ridge hip and ridge caps for GAF shingle roofs.

Written by an AI model from its trained knowledge.

What the AI looks for in Roof Caps

Duct diameter match: The cap collar must match the duct size exactly (commonly 4, 6 or 8 inch). Never reduce a fan or dryer duct. Undersized outlets choke airflow, which makes fans loud and lets dryer lint build up.
Dryer vs bath/kitchen use: Dryer exhaust caps need a backdraft damper and no screen (IRC M1502.3) Screens trap lint and create a fire hazard.
Backdraft damper and pest guard: Bath and kitchen caps should have a damper. A bird or insect guard is fine for non-dryer use. These keep out cold air, birds and rodents.
Roof pitch range: Confirm the cap's flange suits your pitch, or use a pitch-adjustable model A flange that doesn't sit flat can't be shingled in watertight.
Ridge cap shingles: Buy the hip/ridge product made for your shingle line, not cut 3-tabs, when you have dimensional shingles Matching ridge caps keep the warranty valid and look and wear correctly.
Material: Galvanized steel or aluminum with a baked finish is preferred over thin plastic in hot or hail-prone areas Plastic caps crack and dampers warp with UV and heat.

No. Each exhaust needs its own termination.