Gas fireplace venting for homes in Olympia Heights
Direct vent pipe installation for a changed route, planned against the model's vent tables.
- Owned and run locally
- Available for same-day service
- Fully licensed and insured
- Family owned and run
Signs a gas fireplace vent needs attention
- A new deck built close to the vent
- Visible gap at a pipe joint
- Flashing lifted around a roof vent
- A window replaced near the termination
Jump to
From the appliance collar to the termination cap
An old chimney as a gas vent route
Before a gas appliance is connected to an existing chimney, the fuel gas code requires the passageway to be examined for obstructions. It must be cleaned if it served solid or liquid fuel, lined as NFPA 211 requires and repaired or relined where it is unsafe for the new use.
If a vent route uses an existing chimney, we explain those steps and which service handles each. Cleaning a flue that served wood belongs to our chimney services, and insert liners belong to the insert service. The gas vent work is quoted once the chimney is ready for it.
Joints left short of their locked position
Some vent joints push together and lock, while others twist into place. One Type B vent maker describes an integral locking feature that holds each joint once fully engaged, and notes that some jurisdictions also ask for screws.
During inspection we check each accessible joint for full engagement. A joint that looks seated but has not locked can pull apart later. Where we find one, it is engaged properly or the section is replaced if the locking feature is damaged. Concealed joints are noted as not checked unless access is arranged.
Screws through the inner wall of a vent
Screws, rivets and other fasteners may not penetrate the inner wall of a double-wall gas vent under the fuel gas code, apart from specific transitions. One vent maker allows short screws at some joints, placed so they do not pierce or deform the inner liner.
If we find screws driven through the inner wall, we explain why that matters and what it takes to put right. Usually the damaged section is replaced with a listed part, joined with the locking method the instructions describe. The finding and the fix are recorded.
Water or air around the wall penetration
Around a vent that crosses an outside wall, the gap between pipe and wall must be permanently sealed with approved materials under the fuel gas code. That seal keeps combustion products from entering the building around the vent and also helps keep weather out.
Cracked or missing sealant, gaps behind the termination plate and stains on the inside wall are signs worth mentioning. We check the seal from outside and, where it can be reached, from inside. The penetration is resealed with the materials the vent instructions name, and damaged finishes are listed separately.
The gas venting scope you approve
- Appliance and vent system identification
- Blockage from nests, plants or debris
- Gas vent inside a masonry chimney reviewed
- Written record of the vent work
Questions about gas fireplace venting
Can a gas fireplace vent through an old masonry chimney?
Some appliances are listed to vent through a liner or gas vent inside a masonry chimney. Before the connection, the fuel gas code calls for the chimney passage to be checked for obstructions and cleaned if wood or another solid fuel was burned in it. Insert liners are handled under the insert service.
Do you need to open the wall to repair a vent?
Sometimes. The manuals do not require inspection openings at joints inside walls, so concealed sections may need an access opening. We explain the access needed, and the wall restoration is listed as its own item before you approve.
Can the gas vent share a flue with a wood-burning fireplace?
No. The manuals we work from require a separate vent and prohibit venting into a pipe serving a solid-fuel appliance. The fuel gas code also calls for gas vents inside masonry chimneys to be labeled for gas appliances only.
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Chimney & Fireplace Brands We Work With
DuraVent 
Olympia Chimney and Venting 
Copperfield Chimney Supply 
Rutland 
Heatilator 
Heat & Glo