What's Included

Gas fireplace vents in Casselberry, in detail

Downdrafts in a B-vent

DuraVent's troubleshooting section says downdrafts are generally caused by a termination too close to an adjacent wall, parapet or other structure. It also names inadequate combustion air, and notes that clothes dryers or other exhausting appliances in the same room can cause downdraft problems.

For a natural vent fireplace in Casselberry, our team looks at the cap height and the nearby walls and asks what else exhausts air from the room. The fix may be at the roof or inside the house, and we explain which before pricing it.

Condensate and corrosion in the vent

Continuous condensate can corrode vents, caps and draft hoods, the Type B instructions warn, and they call the situation extremely dangerous and in need of immediate correction. Named causes include incorrect vent sizing, long lateral runs, too many elbows and cold spaces, with laterals kept to no more than three quarters of the vertical height.

Beads of moisture on the outside of the pipe and rust at the joints are early signs. If our team finds them on the vent for your Casselberry fireplace, we trace the cause, whether sizing, layout or an exposed section, before replacing the damaged parts.

Snorkel terminations for tight spots

Some installations need the vent to rise outside the house before it ends. DuraVent offers snorkel terminations for applications that require vertical rise on the exterior of the building, as part of the same listed system.

Whether a snorkel is allowed depends on the appliance's venting limits. If the termination at your Casselberry home sits too low or too crowded, our team checks the manual for approved options before proposing one.

Protecting exterior vent parts

Exterior vent parts weather like anything else on a roof or wall. The Type B instructions note that outside portions of the vent may be painted with high temperature paint to help prevent rusting, and a listed top locked to the pipe protects the vent against rain, debris and birds.

The finish on exposed vent parts and the cap's hold on the pipe get checked on your Casselberry home. Rusted parts are replaced, and sound parts can be cleaned and painted with a suitable high temperature paint.