If you don t direct water from the roof into a gutter it can pour into the wall.
Roof leak where two gables meet.
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.
Identifying the true location of roof leaks in the attic.
The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in.
If leaks continue to occur from ice dams consider installing roof edge heating cables.
This means the expanse of shingles slate shakes whatever.
The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in.
If your roof is asphalt then you can walk around with ease.
The gables over the set back porches guarantee that snow accumulates up against the siding they ve combined gable vents with ridge vents short circuiting the soffit venting paths the double gable dormer valley is incapable of soffit to ridge venting on the valley side pitches where the dormer ridge meets the upper roof the ridge vent is guaranteed to be buried for months in sloughing snow from the higher roof probably leaks drips.
Other materials such as slate concrete tile or clay tile may not be so forgiving.
This debris can allow water to pool or ice to build up which makes degrades flashing and sealants and allows water to leak around your chimney.
Two ways to flash roof edges.
Once you locate the source of the water mark the area.
This should cover the most leak prone areas.
If your roof is older it is possible that the leak is within the roof field.
If you have an attic the easiest way to spot the leak is to up there on a rainy day.
Water will reflect light so bring a flashlight along.
These valleys are the meeting points between 2 roofs which are highly dangerous areas as they are not only prone to water seepage but their structure also makes it difficult for them to be effectively waterproofed.
If leaks continue to occur from ice dams consider installing roof edge heating cables.
Then reshingle sliding metal step flashing behind the fascia board the trim behind the gutter.
Then reshingle sliding metal step flashing behind the fascia board the trim behind the gutter.
This should cover the most leak prone areas.
Ground zero for roof rot is often where roofs meet walls.
If your steep roof creates a sharp valley where it meets the chimney you may have a buildup of leaves sticks or other debris that sit above your chimney.
Flashing is the key to a skylight that won t leak water into the roof cutting a hole in a perfectly water tight roof is asking for trouble and true to form skylights.
The field of shingles.
Every little crevice is an entry point for water and one of the most vulnerable points in any roof is the valleys.
More questonable or ugly roof wall flashing examples.
