Is it safe to pressure-wash an outdoor fireplace or fire pit?
No — keep a pressure washer away from any gas fire feature. The high-pressure spray drives water into burner ports, the igniter, the gas valve, and control wiring, and it can crack fire glass, chip stone, and blast mortar out of masonry joints. Clean these by hand with a soft brush and mild soap, and cover or plug the burner first.
Why pressure washing does more harm than good
A pressure washer throws water exactly where you don't want it. On a gas fire pit or outdoor fireplace, that means straight into the burner ports, the spark igniter, the gas valve, and any control wiring — the parts that hate moisture and are a pain to dry out. We get calls every spring from folks in Fairview and Brevard whose pit won't light after a wash-down, and the cause is almost always water sitting in the burner or a corroded igniter. On masonry, the pressure chips stone veneer, etches mortar, and drives water deep into joints where our freeze-thaw cycles then crack it apart.
The right way to clean outdoor stone and metal
Hand cleaning is slower but it's what these features are built for. For stone or brick, use a garden hose at normal pressure, a stiff nylon brush, and a mild masonry-safe cleaner; work top to bottom and rinse. For the metal burner and pan, a soft brush and a damp cloth handle soot — and always cover or cap the burner ports before any water goes near them so nothing runs down into the orifices. Let everything dry fully in the sun before you try to light it. If your pit uses fire glass or lava rock, pull the media out and clean it separately rather than blasting it in place.
After a wash — and after storm flooding
If water does get into a burner, don't force ignition. Let it dry a full day, and if the flame comes back weak, sooty, or uneven, or the igniter won't spark, that's our cue, not a reason to keep trying. Any time an outdoor gas feature has been flooded — a burst summer storm, standing water, or a well-meaning pressure wash — a licensed tech should check the burner, orifices, and connections and leak-test the line before it's back in service. Call (828) 545-0525.
Related questions
- What regular maintenance does a gas fire pit need?
- How do I clean soot off the brick or stone around my fireplace?
- How do I keep an outdoor fireplace or fire pit from rusting?
- How do I keep rain and water out of a fire pit burner?
- What maintenance does an outdoor wood-burning fireplace need?
- How often should a gas fireplace be serviced?
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