The photo above is from a roof that we re-roofed in Sacramento.  If you look closely you will see that the earlier contractor or "repair person" did not have the correct size vent pipe flashing.  Thinking quickly, the person used his snips to cut notches around the opening of the flashing so that it could be slid over the top of the pipe and then wrapped it with friction tape ... creating a leak waiting to happen.

Important: How To Choose A Roofing Contractor

Reroofing is a process you may not be familiar with until it becomes time to replace the roof on your own home. And even then, there’s a lot to learn about which products to use and what procedures best meet your individual roofing needs. Therefore, it’s vital to know that you can rely on the roofing contractor you choose to give you good advice about those products and procedures that may be new to you. The key is to find the right roofing contractor for your job.

Roof Parts

How To Handle Moss On Your Roof                

Green, velvety masses of moss often grow on north-facing roof surfaces and on tree-shaded roofs. Unlike algae, moss left on roof surfaces can develop beyond an aesthetic problem. It can infiltrate the roof structure underneath the shingles and make their edges lift and curl, which can lead to cracking and blow-off during high winds and storms. Heavy moss growth can actually form dams that can cause water to back up under the shingles and damage the roof deck. It's best to clean moss off a roof as soon as you notice it's growing there.

How to Fix a Leaking Rooftop Vent Pipe

If you have the rubber gasket type vent pipe boot and it looks like the one on the right, this needs to be replaced or repaired right now. As a home owner it's pretty easy to fix this yourself in a few steps and usually under $20.00

Leaky Vent Pipe