Is Western North Carolina a high-radon area, and does adding a fireplace affect radon levels?
Yes — Brevard sits in Transylvania County, squarely in the EPA's highest radon zone, and its damp, crawlspace-heavy housing is right in radon's path. A fireplace doesn't make the gas, but a moist crawlspace with cracked block is where it enters — and an open firebox drawing room air can pull more of it up. A sealed direct-vent unit doesn't.
Wet ground, open crawlspaces
Brevard gets more than eighty inches of rain a year, and it shows up under the house: damp crawlspaces, cracked crowns, rusted dampers, and chimney chases that stay wet. That moisture keeps the soil active, and radon from the crystalline bedrock rises through every gap in a crawlspace floor or block wall. The wetness has nothing to do with your fireplace — but because radon comes from below, anything that changes the pressure inside the house changes how much of it comes in. Start with a test; we're a hearth company, not a radon outfit.
Cabins, propane, and the sealed option
Plenty of Brevard's homes — especially the cabins toward Connestee Falls and out past Pisgah Forest — run on propane rather than a gas main. That doesn't change the radon picture, but it does shape the fix: a sealed direct-vent propane fireplace draws its combustion air from outside and vents it the same way, so it never puts the crawlspace under suction. An open masonry fire or a room-air wood stove does the opposite, briefly increasing the draw on the soil below.
The Transylvania approach
For a home that already tests high, sealed direct-vent is the pick that keeps the number from creeping up, and it pairs well with the waterproofing these wet lots need anyway. Actual mitigation — a sub-slab or crawlspace system — is a specialist's job; our job is choosing a hearth that doesn't fight it. Any gas work gets a Transylvania County permit and an inspection. We're forty minutes southwest. Call (828) 545-0525.
Fireplace help in Brevard
We install and service fireplaces throughout Brevard and the rest of Transylvania County — just 40 minutes southwest from our Asheville-area showroom.
Related questions
- Can a wood-burning fireplace or stove actually pull more radon into the house?
- Are sealed direct-vent fireplaces the better choice for a home with radon concerns?
- Can a radon mitigation system interfere with my fireplace's draft, or vice versa?
- My home has an encapsulated crawlspace or a tight envelope — does my fireplace or wood stove need outside combustion air?
- Can a heavy fireplace or stone surround be installed in a home built over a crawlspace?