Table of Contents
Kickout flashing, also known as diverter flashing, is a special type of flashing that diverts rainwater away from the cladding and into the gutter. When installed properly, they provide excellent protection against the penetration of water into the building envelope.
Where do I need kickout flashing?
Kick-out flashing should be installed at the end of a roof-wall intersection to divert water away from the wall and into gutters. The kick-out flashing should be large enough to handle expected stormwater flows.
How much does it cost to install kickout flashing on roof?
Generally, the cost of fixing flashing is anywhere between $15 to $25 per linear foot, which includes both the price of the new flashing itself and the caulking used to seal it in place (which is about $10 on its own or sometimes more). A total flashing replacement might cost anywhere between $300 to $600.
When did kickout flashing become code?
Kickout flashings have been required by the International Residential Code (IRC) since 2009, yet I’ve rarely seen them installed on new homes and additions. Part of that might be the original awkward language that didn’t even include the term “kickout flashing.” In the 2012 IRC, Section R903.
Do I need kickout flashing?
Kickout flashing is required regardless of the type of roof-covering material or exterior wall covering, with the exception of brick or concrete block. Large expanses of roof above the kickout flashing will direct large amounts of runoff to the kickout flashing.
Is kickout flashing required for vinyl siding?
Vinyl siding, fiber cement, wood siding, stucco, and even brick veneer should all have kickout flashing installed.
Does flashing go under or over shingles?
Flashing should overlap the roof-covering material, but on asphalt shingle roofs, for aesthetic reasons, the part of the headwall flashing that extends down over asphalt shingles is often covered with a course of shingle tabs. Wind-driven rain can enter at these gaps, causing roof leaks.
How often should roof flashing be replaced?
Your roof flashing needs to be checked annually. Remember, you won’t always have to replace your roof flashing when you get a roof replacement. No matter what kind of metal it’s made of, your flashing should outlive the original roof it was installed on.
How long should roof flashing last?
Properly installed chimney or roof flashing can last up to 30 years. Lifespan is determined by surrounding details like where you live, shape and size of your chimney, and the materials used to make it. Knowing what year your house was constructed helps keep track of the life of your chimney.
Can you add flashing to an existing roof?
Flashing is generally installed at any joints or edges in the roof where water could otherwise work its way in. In order to properly install new flashing, you’ll have to remove the shingles surrounding your old flashing, and then re-lay them after installation.
What is a step flashing?
Step flashing: Step flashing is a rectangular piece of flashing bent 90 degrees in the center. It is used for roof to wall flashing. Multiple pieces of the flashing will be installed in layers with shingles to ensure the water flows away from the wall.
What flashing is installed where a roof intersects a head wall?
Headwall or Apron Flashing We install headwall flashing, also called apron flashing, where vertical walls intersect the roof. It prevents leaks by guiding water running down the wall onto the roof system. We place headwall flashing behind siding.
Should you caulk flashing?
It is generally not a good idea to use caulking on wood siding. Flashing acts as a waterproofing layer for this type of siding, and caulking will prevent the flashing from doing its job. As far as trim boards are concerned, you should not caulk around these areas if they sit on top of the surface of your siding.
How much overhang should shingles have?
Yes. Shingles should not extend more than 3/4” (19 mm) past the drip edge. If shingles overhang the edge of the roof by more than 3/4” (19 mm), then they are not supported and may crack and break off. In addition, the wind resistance at the roof edge may be compromised.
What are the different types of roof flashing?
Roof Flashing Types Continuous Flashing. This is also known as “apron flashing” because it acts in a similar manner to an apron. Base Flashing. Counter Flashing. Step Flashing. Skylight Flashing. Valley Flashing. Drip Edges. Kickout Flashing.
Can flashing go over siding?
In certain instances flashing may need to be installed on the exterior of siding. However, in most instances, step flashing should be installed “behind” siding. It is always recommended to install step flashing behind stucco, Dryvit, wood panel, lap siding, vinyl siding, cedar shingle siding, etc.
What is Z flashing for?
What Is Z-Flashing? In construction terms, z-flashing refers to a “Z” shaped piece of metal that provides a transition between two different materials. The particular shape allows the channels to act as a receiver for panels, ridge caps, and headwall flashing.
Can you put new flashing over old flashing?
Also, a new flashing should not be layered over the old flashing. Your roof is supposed to have only one layer of flashing at a time. Installing new flashing is the only way that we can guarantee quality outcomes when replacing your shingle roof.
Should drip edge be replaced with new roof?
Drip edge is the metal flashing that’s installed at the edges of the roof to help control the flow of water away from your fascia and other roofing components. The drip edge has to be replaced when you get a new asphalt roof. It’s actually a code to have it on your roof.
Can you reuse roof flashing?
Existing drip edge, vent flashings, step and counter-flashings may be reused when they are in “like new” condition, meaning that they do not show signs of excessive wear, damage or deterioration (for example, corrosion, rust, scoring, tearing or any physical damage from the roof tear-off).
