How to Fix 3 Common Drywall Cracks (And When to Call a Pro)

Whether you live in a historic home in Old South or a new build in North London, drywall cracks are an inevitable part of homeownership. As houses settle and humidity levels fluctuate with the Canadian seasons, the framing shifts, causing the rigid drywall to crack. But how do you know if a crack is a simple cosmetic fix or a sign of a bigger problem?

1. Hairline Cracks Above Doors and Windows

The Cause: These are the most common cracks and are almost always caused by normal house settling or seasonal expansion and contraction.
The Fix: A professional will widen the crack slightly to allow a setting-type joint compound to penetrate, apply fiberglass mesh tape, and blend it smoothly into the surrounding wall before repainting.

2. Popped Drywall Nails

The Cause: Sometimes, the wood studs behind the drywall shrink as they dry out over the years. This pushes the head of the drywall nail or screw out, creating a small circular bump or crack on your wall.
The Fix: The old fastener needs to be removed or driven deep into the stud, and a new screw must be inserted nearby to secure the board. The hole is then patched, sanded, and painted.

3. Large, Jagged Diagonal Cracks

The Cause: If you have a crack that is wider than a quarter-inch, runs diagonally across a solid wall, or is accompanied by doors that suddenly won't close properly, this could indicate foundation shifting or structural issues.
When to Call a Pro: Do not simply spackle over a massive structural crack. It requires professional assessment to ensure the underlying cause is addressed before the cosmetic repair is made.

Flawless Drywall Repair in London, ON

Patching drywall is easy; making the patch completely invisible takes years of practice. If you are tired of staring at cracks, holes, or botched DIY patch jobs, the drywall experts at ApexPlus can make your walls look brand new again.

Request your free drywall repair estimate today!