Ceiling leak repair in Cambridge, MA: we follow the water to its source, dry the ceiling out and rebuild old plaster or drywall so the room looks as it did.
In Cambridge, most ceiling leaks come from a bathroom in the unit above, snowmelt backing up at the eaves or a heating or supply line in the floor framing. We trace the water back, remove the wet ceiling, dry the framing and rebuild it, usually in plaster, as part of our ceiling leak repair across Massachusetts.
| Fact | Value | Source |
|---|---|---|
| Homes built in 1939 or earlier | 25,842 of 54,612, so many ceilings are plaster over wood lath | US Census Bureau, American Community Survey |
| Water service | Cambridge Water Department, for a break at the street or meter | City of Cambridge |
| Permits for larger ceiling work | City of Cambridge Inspectional Services Department | City of Cambridge |
First- and second-floor ceilings in two- and three-family homes
A loose toilet flange or a gap in the tub caulk lets water run along the floor framing and drop through your ceiling, sometimes two rooms over. We cut an access hole at the wettest spot so the neighbor's plumber can see the failure.
Top-floor bedrooms and stair halls
Logan Airport normals give the Cambridge area 49.2 inches of snow a year, and a warm attic melts it into ice at the eaves. The water that backs up behind that ice stains the ceiling near the outside wall.
Ceilings under radiators and kitchen lines
A weeping radiator valve or a pinhole in an old copper line drips onto the ceiling below for weeks. We remove the stained section so the line can be fixed and the joists can dry.
If your Cambridge home was built before 1978, the size of the ceiling repair decides whether state lead rules apply, and old plaster counts as asbestos until it is tested.
| Your Cambridge ceiling repair | Rule that applies |
|---|---|
| Patching the wet section only | Ordinary repair, no building permit under the state code |
| Cutting away a large section or touching a joist | Permit from Cambridge Inspectional Services |
| Disturbing more than 6 sq ft of old paint in one room | Lead-safe renovation by a licensed contractor, under 454 CMR 22.11 |
| A certified tester finds no lead on the surfaces | The lead renovation rule no longer applies |
| Plaster or ceiling tile that has not been tested | Handled as asbestos, with MassDEP notice ten working days before abatement |
Most Cambridge ceilings we see after a leak need plaster rebuilt to match or a sagging section taken down and replaced.
Plaster holds on through keys pushed between the wood lath, and soaking breaks them. We fasten the sound plaster back to the lath and fill the cut-out with new plaster, so the patch sits flush with the old surface.
A bow means water or broken plaster is hanging on the ceiling. We drain it, take down only the failed area and rebuild it, which keeps the rest of an old ceiling intact.
Tell us which ceiling is wet, whether the water has stopped, and whether a light fixture sits in the wet area.
Call If the Ceiling Is Dripping NowOur Cambridge crews also cover Somerville, Arlington and the Middlesex County cities around them.
Cities near Cambridge
Boston's housing is a year older at the median, built in 1947, so ceiling repairs in Boston involve just as much plaster.
Lowell has 148 freezing nights a year to Cambridge's 91.6, so frozen pipes drive more Lowell ceiling leak repair calls.
Yes, if the home was built before 1978 and the repair disturbs more than 6 square feet of painted ceiling in a room. A negative test by a certified inspector or certified renovator takes the job out of the rule.
No. Switch off the breaker for any light or fan in the wet area until an electrician has checked it. Water running along wiring can reach fixtures well away from the stain.
Until a meter reads it dry, which is usually a few days with fans running. Paint over damp plaster or board blisters, and the stain comes back.
Yes. Somerville, Arlington and Watertown border Cambridge, and we repair their older plaster ceilings the same way.
If your ceiling is bowing or dripping, call now. A person answers and walks you through it, and you get the ceiling back dry, flat and painted.
Call a Ceiling Repair Crew