Common Flashing Concerns On The RoofFlashing is an important part of any roof insulation. Flashing refers to thin pieces of metal that are placed around chimneys, windows, and sometimes the entire frame of the roof itself. The purpose of flashing is to cover and secure the area around these parts from rain or wind penetration.
Flashing looks and operates differently for each type of roofing. On a flat roof, the flashing is meant to surround any piping that protrudes out the top. There are usually 2 to 3 of these kinds of pipes to consider. Depending on the age of the roof, it is in these areas that some weaknesses may appear. Roofing companies make extra sure to provide support around these awkward spaces, cutting the sheets of metal to exact specifications and finding ways to layer so that protection is guaranteed. Even if these specifications are perfect and the work is done with exactitude, pieces of flashing can still come loose. So it’s an issue of constant assessment and little patch-up jobs here and there.
Problems with protecting pipes is only one issue with flashing, for one kind of roofing material. Homeowners should pay special attention to the flashing situation on their roof because if it has been unattended for 5+ years it will need some work.
Oxidation will happen - Most types of steel and metal have high oxidation readings. Oxidation is the process of an item loosing electrons. It is the reason why fruit turn brown and the reason why flashing turns brown as well. Oxidation negatively impacts the visual presence of the flashing. It is not nice to important link look at a beautiful roof with rusty pieces holding it all together.
Oxidation also negatively impacts the functionality of the flashing. It weakens it which also increases the likelihood for it to bend and de-stabilize.
Issues with a sloped roof - Sloped roofs usually have a number of flashing problem areas. The perimeter of the sloped roof is probably coated with flashing. The nature of the slope however is that a lot of debris and leaves can build up at the base of the roof. The flashing will do its best to remain strong in the face of all this added weight - but after a while, if it's not cleaned out, the flashing will begin to bend and weaken.
The same issue happens in the valley of a roof. The valley of a roof is where two roof planes meet. The flashing at the base of the roof valley will have a lot of weight to deal with, both because of the structural arrangement go to my blog of the roof and the excess debris that will find its way there.
These are all issues that roofers deal with every day. Roofers in Santa Cruz regularly deal with homeowners that think they need a roof replacement but actually only need a little bit of flashing repair.