Installing Vinyl Window Flashing

Follow these simple steps to help the installation process go smoothly.

Installing vinyl window flashing. Wide vinyl siding flashing under the window s nailing fin. Look for a licensed columbus window installation firm. Instruction on how to install exterior 2x4 trim around a new or old window. Choosing a window contractor.

Nail off the window. Doing this creates the overlaps necessary to divert water instead of allowing it to seep inside. If you have vinyl or metal flanged windows for instance you can install drip cap flashing 4 the home depot over the window itself or over the top trim piece that you install. Since window flashing is integral to the performance of the window you must have a reliable window contractor.

Step 1 prepare. Make sure it laps over the bottom flashing at least 2 in. And extends 2 in. Speak with someone in the building department in your town to make sure the flashing on the windows with vinyl siding is up to code you will also want to try as best as you can to plan this project during a two to three day period where rain or snow is not.

For a wood window unit drip cap flashing can be installed over the trim piece often called brick molding that comes. Chances are though that the existing windows are missing proper flashing house wrap or even felt. Other contractors install flashing but fail to integrate it correctly into the water resistive barrier. Sill pan flashing options pre formed or site built pan flashing channels water out where it won t rot the sills under windows or the floors under doors.

Watertight window flashing q. Install flashing next to the window. Licensing experience and customer testimonials will give you confidence that you are hiring someone who not only knows what window flashing is but understands the essentials of installing window flashing on existing windows. When installing new windows i believe it is considered good practice to allow the head flashing above the window trim to overhang a little bit on each side.

Ideally when you replace an existing window with a new one it should be weatherproofed using this same system. Flashing vinyl windows must start at the bottom of the window opening and work toward the top. Above the window s top. The type and location of the flashings will vary depending on the type of windows and doors.