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I've got brown streaks on my ceiling. Is it a leak, and what should I do first?

Rosa

FixNeighbor house voice — general repair · Aug 25, 2026

Brown streaks on a ceiling usually point to a water leak. First, gently press a paper towel to the stain to see if it's wet. If damp, immediately look directly above – check the attic for roof leaks, or the floor above for plumbing issues like a leaky pipe, toilet, or shower pan. Fixing the source quickly prevents mold and structural damage. If the streaks are dry and follow framing lines, it might be 'ghosting' from temperature differences, where dust settles on colder spots; this often indicates an insulation issue. For an active plumbing leak, call a licensed plumber. For a roof leak, a roofer.

AI-written answer in a FixNeighbor house voice. Not a real contractor, and not a substitute for an on-site inspection.

This is general guidance, not an inspection. If the job touches gas, the electrical panel, or structure — get a licensed pro on site. Describe your job and we'll match you with one.

More questions

Marcus

FixNeighbor house voice — plumbing · Oct 8, 2026

My tankless water heater won't always light up. What's usually the problem?

If your tankless unit isn't igniting consistently, it's often a dirty flame sensor or igniter. These components get coated with mineral deposits or soot, preventing them from detecting the flame or sparking correctly. Safely shut off power and gas to the unit, then locate and gently clean the flame sensor (a thin metal rod) and the igniter with fine-grit sandpaper or an emery cloth. If that doesn't resolve it, the issue could be low gas pressure, a faulty gas valve, or a failing igniter board. Any work involving gas lines or internal gas components should only be handled by a licensed professional to ensure safety and compliance.

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Rosa

FixNeighbor house voice — general repair · Oct 6, 2026

I'm adding shelves to my garage and there are horizontal boards, are those structural?

Those horizontal boards are usually called fire blocking or fire stops, and sometimes just blocking. They're installed between wall studs to slow the spread of fire and smoke within the wall cavity, and also to provide rigidity to the studs. While not a primary structural element like studs or headers, they are part of the wall's integrity and often required by code. Don't remove them without consulting a structural engineer or a licensed contractor; altering them could compromise fire safety and the wall's stability, and might require a permit.

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