How To Install Drip Cap Flashing For Windows

Home and business owners alike in Alberta, want to weatherproof their properties for the cold and moist climates. 

And part of that job is preventing water from seeping into the building, especially at vulnerable entry points like windows and doors.

That’s what flashing intends to achieve. Let’s talk about drip cap flashing, a specialized type of flashing you might find on windows.

What Is Drip Cap Flashing For Windows And What Does It Do?

A drip cap is a piece of flashing shaped like an L that goes above a window or door, ensuring seeping water falling from above doesn’t seep in. You would install this flashing before adding the siding, which overlays the flashing and keeps it in place.

Drip cap flashing goes by several names:

• Rigid head flashing (RHF)
• Window drip cap
• Drip edge flashing
• Cap flashing

Drip cap flashing is not only easy to install but sometimes comes built-in to the structure of a door or window. Either way, it’s a worthy investment to prevent costly moisture-related repairs down the line.

How Do You Install Drip Caps For Windows?

If you have a sturdy metal window unit, you can install drip cap flashing over the window directly. For wood windows, look to attach it to the brick molding. Consult the manufacturer’s guidelines if you’re ever unsure.

Some property owners also opt for self-adhesive flashings as an additional cost-effective waterproofing measure.

What About House Wrap and Other Flashing Techniques?

When maintenance staff refer to window flashing, they often think of three main types of weatherproofing:

• Drip caps that fit above a window
• Window pans that run along the bottom edge of the window to act as a slope for water to fall off
• Flashing tape protects the rough opening of the frame in the wall. As its name suggests, it comes in rolls of tape.

Building wrap is another waterproofing tactic that uses fibrous material to push water away from the property but also allows moist air to escape, as internal moisture can lead to mold.

Property managers often recommend complementing building wrap with drip cap flashing, especially for more elaborate properties. Dripping water can still seep behind the wrap if you use it exclusively, so plan to install drip cap flashing as well. If you’re using self-adhesive flashing, allow the wrap to overlap it.

How Do You Choose the Right Materials For the Job?

Drop cap flashing involves materials ranging from steel to aluminum. Aluminum is a popular option due to its low cost and resilience against most weather conditions. However, property owners must be wary of corrosion when using it.

Copper is another option for more advanced conditions thanks to its durability, but be prepared to invest a hefty sum into its installation.

You overall want to choose corrosion-resistant metal flashing for windows to protect yourself from the harsh winters of Calgary. Learn more here about how to choose the best material for your metal roof

What Metal Suppliers in Calgary Can You Trust with Your Flashing Needs?

Flashing is an essential weatherproofing measure for any building, and special attention is necessary for vulnerable entry points like windows. Drip cap flashing—whether steel, copper, or other metal—is a must-have in the snowy regions of Calgary.

Interested in drip cap flashing but unsure where to get quality and affordable metals for the job?

Get a complimentary quote from Phoenix Metals Ltd. today to start planning your next project