When conditions are serious the wind pushes water around on a roof.
Push on roof shingle and water squishies out.
Protect from wind driven rain.
The bounciness is limited to one or a few areas of the roof.
The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.
This cutaway drawing shows the steps involved in roofing a house.
Sometimes the water shows up at a ceiling spot distant from the leak.
Everything being equal ventilation shingle type climate etc which roof will last longer.
Seems to me a steep hillside erodes more quickly than a low slope so i d think that roof shingles would wear out more quickly on a steeply sloped roof.
Wind can easily push the water upwards before gravity pulls the.
This is likely your problem if.
This project guide is a combination of those two articles and it covers replacing the existing roof decking installing underlayment and ice dam protection laying the first row laying shingles in the field flashing ridge shingles and vents and more.
Some roof leaks are tough to locate.
Short sections of overlapping l shaped flashing are arranged to channel water over the shingle downhill from it.
How to redirect rain off a roof.
Open valleys have metal flashing to protect this critical area of the roof.
Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies.
One with a steep pitch or one with a shallow pitch.
Step flashing protects the gap where roofs meet walls by weaving into.
Metal drip edge isn t usually required check with a local building official but it gives roof edges a nice finished look prevents shingles from curling over the edge and keeps water from running directly down your fascia boards.
However on the edges the drip edge must compete with the wind.
While this is a normal aspect of roofing and.
Drip edge flashing is supposed to push water away from houses.
While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.
If one of the steps has become loose or rusted through water can creep behind it underneath the others and into the house.
If your shingles and underlayment leak water can get onto the plywood decking and rot it out.
There are times when it rains especially during big storms that water cascades off of a roof like a waterfall.
Install the drip edge.
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.
Look in your attic for signs of moisture.