What Types of Flashing Do You Use For Vinyl Siding?

Vinyl FlashingThere are a few different types of flashing used for vinyl siding that will likely work better than others. The nice thing for homeowners and contractors is that the vinyl siding industry has taken the time to figure out exactly what does work from a technical standpoint and has published a specification known as ICC AC148 to tell people what will meet their standards.

So, if you are one of those people who is interested in purchasing flashing to go with your vinyl siding project, the best recommendation is to ask your vendor which flashing types meet the ICC AC148 standard.

Here are some other recommendations for vinyl flashing installation projects:

Ensure That the Flashing is Code Compliant

First, there is ICC AC148 and then there are the local building codes. You shouldn’t run into any problems, but you should always check first. For building codes, you can probably just call your city building inspection department and ask. They will likely know right away if there are requirements to meet.

Find the Best Material for the Flashing Type

Of the types of flashing used for vinyl siding, aluminum coil is the recommended type of flashing for windows, while other materials including tape, vinyl, and other metals can be used for either windows, roof edges, decks, and corners. The Vinyl Siding Institute puts out a great installation manual that you can access for free online. The manual provides insight into all aspects of a vinyl siding installation.

Install Process For Each Area Can Be Different

If you are adding a deck to your house which has vinyl siding, flashing is installed on a ledger board, so that the house will not be exposed to water from storms. For windows, the goal is to cover the nail flange of the window, which is normally the part that is along the edge of the frame and contains the nails or the screws. One reason that thin metal is popular for windows is that the installer can bend the metal to match the window frame, leaving off just outside the nail flange. To be very safe about keeping windows free from moisture, adding a layer of tape over the nail flange before you install the flashing will give you enhanced protection. With roof flashing, the materials can vary, but metal is a popular choice for roofs as well. The flashing that you use along the edge is normally designed to fit under the shingles, although there are over the shingle types of flashing available as well. Corner flashing tends to follow the same material trend and should fit the corner as snugly as possible in order to keep out moisture.

Overall, the different types of flashing that are available provide different strengths. Aluminum and other metals last a very long time and rarely need replacing, while tape, although newer as a material, is growing in its usage because it is easy to apply. Among the other types of flashing used for vinyl siding, steel and copper are also popular for windows.

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