Drip edges have two key purposes.
Gutter drip edge installation.
This is important to protect damage to your fascia soffits rafters.
A drip edge or a gutter apron keeps your roof secure by filtering out all the water from the attic into the gutter.
Secure the drip edge with roofing cement.
For proper water drainage the drip edge on the rakes should always overlap the drip edge on the eaves.
If you are installing a roof system drip edges and gutter aprons play the main role.
This works out.
Home centers sell rolls of 6 in.
The drip edge further diverts it into the gutter.
The whole purpose is to direct the water into the gutters.
Tools supplies tin sn.
With without rain gutters.
During installation the gutter is usually at the opposite end of the downspout but it will go up behind the drip edge by the time you align the gutter and get to the other end where the downspout is situated.
If it doesn t pull the drip edge out slightly from under the shingles.
Direct water away from fascia.
It should never be installed outside the gutter i e against the fascia board.
A drip edge is designed to take advantage of those forces and along with gravity direct water into the gutter.
We can also relate it to gutter systems.
Due to cohesion surface tension and other forces water droplets tend to stick to one another and to the surfaces they are on albeit slightly.
Installing drip edge on your roof.
Make sure the outer edge extends over the gutter.
The best practice is to always install the drip edge so that it is inside the gutter.
Slip the wide flat flange of the material all the way under the first course of roof shingles as illustrated.
Once the apron s in place fasten it with sheet metal screws.