A Crack in the Ceiling? Here’s When to Worry
Chelsea O'Donnell
You’re sitting in the living room, you happen to look up, and there it is… a crack in the ceiling. Maybe it’s brand-new, or maybe you’re just noticing it for the first time. Either way, it’s natural to wonder whether your ceiling needs a little patching or your house is trying to tell you something.
The good news is that most ceiling cracks aren’t a reason to panic. Houses move a little over time. Wood expands and contracts, drywall settles, and changes in temperature and humidity can cause small cracks to appear.
Still, some cracks deserve a closer look. The trick is to pay attention not only to the crack itself, but also to what’s happening around it.
First, Look at the Pattern
A thin, fairly straight crack often follows the seam between two sheets of drywall. The tape or joint compound covering that seam may have loosened as the house moved. If the ceiling is otherwise flat, dry and solid, this is usually a cosmetic repair.
Cracks also show up where the ceiling meets an interior wall. Sometimes this is caused by seasonal movement in the roof trusses. You may notice the gap more during the winter and less during warmer months. It can look alarming, but it doesn’t necessarily mean the roof is failing.
Older plaster ceilings tend to develop their own collection of fine cracks. A few small, stable cracks may simply be part of the home’s age and character. Loose, sagging or bulging plaster is a different story and should be checked.
Here’s a good rule of thumb: a small crack that hasn’t changed in years is usually less concerning than one that appeared overnight or keeps getting longer.
Take a Look Around
Before grabbing the spackle, give the whole area a quick inspection. Is the ceiling flat and firm? Do you see a stain, bubbling paint or peeling? Does anything feel damp or soft? Has the crack grown? Are doors suddenly sticking, or are new cracks showing up on nearby walls?
One little crack may not tell you much. Several changes happening together can.
For example, if you have ceiling cracks along with sloping floors, sticking doors or cracks around windows, there may be movement elsewhere in the house. That doesn’t automatically mean you have a major structural problem, so don’t assume the worst. It does mean you should have someone take a look before simply covering everything with paint.
Don’t Ignore Water Stains
If there’s discoloration around the crack, water moves to the top of the suspect list. The source could be a roof leak, damaged flashing, an upstairs bathroom, a plumbing line or even condensation around ductwork.
Remember, the stain isn’t always directly below the leak. Water can travel along a pipe or ceiling joist before it finally finds a place to show itself. A brown ring, musty smell or bubbling paint should be investigated even if it feels dry today. Some leaks only appear during a hard rain, when snow melts or when someone uses a particular sink, shower or bathtub.
If the ceiling is sagging, bulging or holding water, keep everyone, including your pets, out of the room. Don’t stand underneath it, and don’t poke the bulge with a broomstick. Wet drywall can be surprisingly heavy and may come down without much warning. Water near a light fixture can also create an electrical hazard.
When Should You Call Someone?
It’s time to bring in a qualified contractor, home inspector or structural engineer if:
The ceiling is sagging, bowing or pulling away
A crack appeared suddenly or is growing quickly
The crack runs across the ceiling and continues down a wall
Several new cracks appear around the same time
The drywall feels soft or the plaster is coming loose
You see water stains, dampness or active dripping
The damage appeared after a storm, roof impact or heavy snow
Cracks are accompanied by uneven floors or sticking doors
If you’re not sure whether a crack is changing, take a picture with a ruler next to it and write down the date. Check it again in a few weeks. A couple of small pencil marks at the ends can also help you tell whether it’s getting longer. Of course, monitoring is only appropriate when the ceiling is dry and solid. If it’s wet, sagging or dropping material, don’t wait.
Most ceiling cracks turn out to be ordinary wear and tear. The important thing is to slow down, look at the whole picture and use a little common sense. A coat of paint can hide a crack, but it can’t stop a leak or correct movement behind the ceiling.
And if your gut tells you something doesn’t look right, make the call. It’s usually easier, and less expensive, to check a small problem today than repair a much bigger one tomorrow.
Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Have a question? Email info@odonnellbros.com with the subject line “Ask the Pro.” For your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit www.odonnellbros.com. Advice is for general guidance only.