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What Is Roof Flashing and Why Do You Need It?

Mar 7

If you're like most homeowners, you may not give much thought to roof flashing. But this important piece of your roofing system plays a key role in protecting your home from water damage. In this blog post, we will discuss what roof flashing is and why it's so important!

What roof flashing is and what it does

Flashing is a type of metal that goes on the roof to keep water from getting in. It's really important because if water gets in, it can damage your house.

The different types of roof flashing available

There are many different types of roof flashing, but the most common are:

  • Step flashing: This type of flashing is used when there is a step in the roof, such as at a chimney. It's made up of two pieces: one that goes under the shingle and one that goes over the shingle.
  • Base flashing: This type of flashing is used at the bottom of walls or around doors and windows.
  • Counter flashing: This type of flashing is used at the bottom of chimneys or vents.
  • Valley flashing: This type of flashing is used in valleys, which are where two sides of the roof come together.
  • Chimney flashing: This type of flashing is used around chimneys.

How to install roof flashing properly

While installing roof flashing is not a difficult task, it's important that you do it correctly. It should be installed in such a way as to prevent water from getting into your home through the roof or other gaps around doors and windows. Here are some tips for how to install each type of flashing properly:

  • Step flashing: Start by removing all the shingles in the area where the flashing will be installed. The flashing should then be placed under the roof sheathing and nailed in place. Replace the shingles, making sure to overlap them by at least two inches.
  • Base flashing: Place the base flashing around the door or window opening and attach it with screws or nails. You can then attach the siding over top of it by nailing through both pieces at an angle (this is called "counter-flashing").
  • Counter flashing: This type of flashing should go on top of your base flashing. It's typically made from aluminum or galvanized steel, and you'll want to nail it into place using screws or nails that are long enough to penetrate through both layers of material.
  • Valley flashing: This type of flashing is typically made from aluminum or galvanized steel, and you'll want to nail it into place using screws or nails that are long enough to penetrate through both layers of material.
  • Chimney flashing: If there's already a chimney cap in place, you can remove it and then install roof flashing by nailing it on top of your chimney.

Why you need roof flashing and how it can protect your home

If you have a roof that doesn't have flashing, it's likely that water will get through the shingles and into your house. Once this happens, it can cause serious damage to both walls and ceilings as well as personal belongings like furniture or electronics! And if left unchecked for too long without proper maintenance checks every year then mold will form and can spread to other parts of the house.

How to determine if you need a new roof or just some new roof flashing

If you're not sure if you need a new roof or just some new roof flashing, there are a few things you can do to help determine the answer:

Check your roof for any missing or broken tiles. If more than 25% of your tiles are missing or broken, it's likely that you need a new roof.

Look for any water stains on your ceilings or walls. If you see any, it means that there's probably water getting into your house somewhere and you'll need to fix the problem.

Check the condition of your roof sheathing. If it looks damaged in any way, then you'll likely need a new roof.

If you're not comfortable inspecting your own roof, consider hiring a professional to do it for you. They'll be able to tell if there are any problems that need addressing and can give their recommendations.

Conclusion

Roof flashing is an important part of your roofing system that helps keep water from getting into your home. It's easy to install, and there are many different types available so you can find one that fits your specific needs. So be sure to include roof flashing in your next roofing project!