If your chimney goes up through your roof, or any part of the overhang of the roof on the side of the house, then a major part of your chimney is the flashing. Flashing refers to pieces of sheet metal or other impervious material installed to prevent the passage of water into your house from the expansion space around your chimney. This space is there to provide your chimney an area to expand and contract when it heats up from fireplace use. The two pieces of flashing (roof and chimney flashing) allow this to happen while keeping the roof leak proof. The roof flashing come from underneath the roofing material and bends up under the chimney flashing, which comes out from behind a joint in the bottom of your chimney, and bends down to cover over the roof flashing. The flashing keeps your roof in this area from leaking when it is raining. Even if your chimney has flashing, it can be inadequate, and cause leaks to the interior anyway, as seen in these pictures below.
When this flashing deteriorates, leaking around the area occurs on the interior of the home, causing damage to the roof and walls near the chimney, as is evident in this picture below.
Many chimneys have step flashing. This type of flashing is called this as it resembles steps on a chimney. We do not like to install this
Step Flashing is called this as it resembles a set of steps going along the side of a chimney. Metro Chimney prefers not to install step flashing as there are too many variables for it to fail, such as wind or service men on your roof pulling them up, making it ineffective, as seen below. We can install it if you want to maintain a visual continuity, but we find it far inferior in design to 1 Piece Flashing.
1 PIECE FLASHING
Metro Chimney prefers to install 1 piece flashing as it is far superior to step flashing, and far less apt to fail. It can be screwed in and cant be bent up by high winds or other service men on the roof. 1Piece flashing lasts longer than step flashing. It can also be installed to follow the natural flow of water as it makes it's way down your roof. See a 1 piece flashing job on all sides by clicking on the images below.
Here is an example of a flashing job that was rusting and pulling away from the chimney before we replaced it with new 1 piece flashing.
This is the flashing replaced with new 1 piece clean flashing.
Metro Chimney is licensed and bonded. Insured through Berkeley Assurance Insurance and bonded through Merchant Insurance.
Oregon Construction Contractor Board License Number 184595.