Commercial Roofing Tips Residential Roofing Tips

Why Is My Roof Leaking? 6 Common Causes of a Roof Leak

As a homeowner or building owner, you probably give very little thought to your roof, that is, until it starts leaking… There are plenty of ways for your roof to spring a leak, but if you’re experiencing problems it might come from one of these six common issues. Whatever the problem, don’t hesitate to contact the Bond Roofing team for help!

Storm Damage

High winds can blow off shingles, lift or blow off flashings, or cause tree limbs to puncture the roof.  Usually, this type of damage is pretty obvious but occasionally the water entry point is not as clear.  Wind-driven rain can find its way under flashing, around dormer windows, or even under ridge vents.  If you’ve noticed interior damage during or after a storm, notify your roofing team immediately.

Pipe Boots or Pipe Flashing 

Have you ever noticed the pipes that protrude from a roof?  These are plumbing vents that are necessary for your plumbing system to work properly and they are the most common cause of leaks we see.  Most pipe flashings, or “boots” are made with hard metal or plastic base with flexible rubber that seals around the pipe.  This flexible rubber tends to dry-rot and crack after 10-12 years. If you’ve noticed a water spot in the bathroom or near a wall next to a bathroom, laundry room, or kitchen, a pipe boot is a likely culprit.


Whether they are brick or stucco or siding, chimneys are a common source of water issues.  They are, after all, a large protrusion through your roof.  Water finds its way under flashing, through dried or cracked caulk in the flashing or siding, through cracks in brick and stucco, or even through the brick itself.  There are solutions for all of these problems, so let us know if we can help.

Wall Flashing 

Like with chimneys, flashing at walls and dormers is a common problem.  Flashing can sometimes move due to thermal expansion/contraction or nails can back out of the sheathing or the caulk sealing the flashing has dried and cracked.  All of these can provide an opening for water to enter.


Over time the nails holding shingles in place can back out of the sheathing.  This “nail-pop” can push the shingle up, allowing wind-driven rain to enter around the nail.  Occasionally these nails can actually puncture the shingle above them resulting in a decent-sized hole.

Clogged Gutters/ Roof Debris

Yes, clogged gutters can actually cause a roof leak! Significant debris buildup in gutters or on roof surfaces can cause water to back up and enter under shingles or flashing. To avoid leaks from debris, clean your gutters and roof frequently.

Have a roof leak? The Bond Roofing team is here to help. Contact us today.