More questonable or ugly roof wall flashing examples.
Roof leaking at edge on the pitch.
Click to enlarge any image.
If your ceiling has a plastic vapor barrier between the drywall and the attic insulation push the insulation aside and look for flow stains on the plastic often water runs to openings in the vapor barrier such as at ceiling light fixtures.
When it comes to leaks low pitch roofs are the most vulnerable.
A roof leak at the edge of a dormer can allow a lot of water to enter your home.
It bends around the edge of the roof channeling any moisture that penetrates the shingles away from the roof decking.
Roof leaks can ruin insulation become a breeding ground for black mold.
Metal roof leaks are a possibility.
Rotten or missing trim or siding can allow water to leak behind flashing and into your roof.
I often form an extended edge of the roof leg of the flashing similar to the projection found on most drip edges.
Some roof leaks are tough to locate.
If the slope is below a 2 12 pitch then an asphalt shingle system is out of the question you must go with a system designed for low slopes.
Below we illustrate that using a single piece of metal flashing where the uppermost edge of a shed roof abuts a vertical building sidewall works fine though the use of exposed nails see our photo below may form leak or wear points in the roof.
I hem the 6 inch edge and the 1 2 inch drip bend to stiffen the flashing and minimize oil canning when it expands.
Sometimes the water shows up at a ceiling spot distant from the leak.
Roof drip edge flashing at roof eaves gable ends.
Metal drip edge flashing is an important element of any roofing edge.
Worn out flashing or missing sealant can also cause roof leaks around dormers.
I adjust the angle between the roof and drop legs to match the slope of the roof.
Depending on the pitch of the roof this can be a diy job or require an hour or two of a contractor s time.
Roof drip edge flashing serves multiple functions on a building the foremost of which is to assist water in leaving the roof edge with minimum damage to other building components by directing the water off of the roof and into the gutter.
Roof pitch slope for reference standing seam metal roofing is not one size fits all.
An alternative would be roof edge heating cables.
Roofs between 1 and 4 9 degrees are considered to be low pitch.
Extra protection another extra layer of protection that some companies install and we at the lyons roofing company recommend is for any low slope system from 2 12 to a 4 12 pitch we install owens corning ice and water shield on the entire section.
