Types of Roof Flashings


Roofs are supposed to protect the home and its occupants from rain, snow, wind and other elements. Shingles, shakes and other roofing material is put on roofs to accomplish this, but they can't do it alone. Flashing is an important and needed part of roofing that can help keep water out of a house and prevent damage. Flashing is placed in vulnerable areas and there are different types of flashing for each area of the roof.

Continuous & Drip Edge

  • Continuous flashing is placed in the joint between a sloped roof and a vertical wall. Drip edge flashing keeps water from getting in at the edges of the roof along the eaves and rakes. The flashing is attached along the eaves underneath roofing felt. It is also placed on top of roofing felt along rakes.


  • Step flashing is shaped in right angles and is worked into shingles to form an overlapping layer of protection. It is applied where the roof intersects with chimneys, skylights and dormers. To keep water for getting in, the vertical edge of step flashing is placed under siding or covered with another piece of flashing, which is secured to a chimney or skylight with caulk or mortar.

Valley & Vent

  • Where two sections of a roof meet it is called a valley. These areas can be vulnerable to damage or leaks. Valley flashing adds a layer of protection. Made in the shape of a V or W, valley flashing is put in place on top of roofing felt before shingles or other roofing material is installed. Vent pipe flashing is cylinder or cone-shaped and has a flange rim at the bottom. While roofing is being put on, the vent pipe flashing is worked into the shingles, going over pipes and flues.

Chimneys & Skylights

  • Chimneys and skylights need flashing but there isn't a particular type of flashing designated for these areas. That is because the shape of chimneys and skylights requires several different types of flashing. For both skylights and chimneys, continuous flashing is used on the base, step flashing on the sides and saddle flashing on top. Chimneys also need cap flashing on its top edges.


  • Flashing is important to keep water off your roof and to limit damage, but flashing must be maintained for it to be effective. Routinely check for loose nails, rusty metal and be sure to caulk where it is loose or peeling. Flashing, like other roofing material, can be affected by rain, snow and other weather. Any flashing that is loose, damaged or corroded should be replaced immediately.

Related Searches


  • Photo Credit Jupiterimages/Photos.com/Getty Images
Promoted By Zergnet



You May Also Like

  • Definition of Roof Flashing

    Flashing is one of the most critical components of your roof because it works to prevent water from entering through holes in...

  • Types of Roof Flashing

    Anyone knowledgeable in roofing will tell you that certain areas are more vulnerable to leakage and water damage than others. These areas,...

  • How to Install Metal Flashing on a House

    An important step to ensuring that your home's siding is properly installed is knowing how to install metal flashing on your home....

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!