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You probably are familiar with the shingles on your roof or whichever other type of covering keeps your home dry and safe. However, amidst these popular materials is the perhaps less popular but equally important roof flashing material.
Flashing is usually a different material from your roof, but it plays an important function to your home by keeping the more vulnerable spots of your roof safe from the weather.
Since flashing is a necessary component of your roof, it can often be found in the spots of your roof where two surfaces meet, such as your roofing and siding, around places like your windows and skylights.
Roof flashing protects the smaller spots that shingles or other covering cannot entirely protect. These spots are especially susceptible to water damage, so it is important that you keep your flashing fresh in order to keep your home dry.
Types of Roof Flashing
While you may be familiar with other roofing materials, you might not be with flashing. It is crucial to the integrity of your roof since it reinforces joints, valleys, walls, chimney areas and edges to prevent leaks. Flashing installs in an overlapping fashion that guarantees water cannot be trapped. Various materials are available for use as flashing. The one that is right for your house depends upon your budget, durability needed, how visible it will be and the other materials that the flashing will come in contact with on your roof. Below are some of the best materials for flashing in the following.
Aluminum
Aluminum is a durable, versatile material and is suitable for numerous flashing locations, including in the valleys, around the chimney and at the walls or step-up areas. It comes in pre-formed shapes, sheets and rolls, so it can be customized when necessary. One advantage of aluminum is that it is a moderately priced material for flashing. Other benefits are that it is moldable around corners or to conform to various angles and it holds its shape effectively. A downside to this material is that the uncoated version of it should not come into direct contact with mortar and cement since their alkalinity will corrode this material. In these situations, only coated aluminum should be used.
Copper
For a pricier, highly durable flashing option, turn to copper. It is resilient in all situations, including valley flashing with tile, chimney flashing, wall intersections, ridge areas and more. Copper can be fabricated into continuous, rigid custom shapes when needed. Flashing in this metal also comes in a lead-coated option as well, and this style is ideal for marine areas. With correct installation, it will last for years. Installation is easy due to the fact that it is a moderately pliant metal.
Stainless Steel
Stainless steel is an extremely resilient flashing material and is suitable for the harshest of environments. The price of it is comparable to copper flashing, placing it in the premium category of materials for this use. Typically, it is installed for base flashing, counter flashing and valley flashing. One major advantage of stainless steel is that it is the flashing material that is least affected by salt spray, acid rain or other environmental corrosives. Also, it can be placed right against mortar and concrete since the alkalinity of these elements will not negatively affect it. A disadvantage of this material for flashing is that it is labor-intensive to install, which increases its already expensive cost.
Membrane
Flashing Membrane is a drastically different look than the metal options. It is basically a very strong tape that comes on a roll that can be stuck around windows and more the protect against the elements. It is a relatively cost-effective option as well.
Who Needs Roof Flashing?
Flashing is a necessity around several parts of your roof. Any one of these areas could be vulnerable to serious leaks and expensive damage from weather problems.
There are several parts of your roof that you may not even think about that require flashing, such as around your chimney or around your window and skylights. Below are some of the main parts of your roof that you should consider applying flashing to:
- Dormer Flashing: The term dormer refers to the part of your home that sticks out of the roof for the placement of a window. It is important to have flashing around the section where the siding of the dormer meets the roof below.
- Skylight Flashing: The area around your skylight is additionally susceptible to damage, so flashing this border is an important consideration. If flashing is done improperly, it is very likely that water will drip through to the room below.
- Chimney Flashing: If your home has a brick chimney, then the space where the brick meets the rest of your roof is a prime location for water and weather damage. Applying flashing in this area is a must to keep the rest of your home dry.
- Other Areas that need Flashing: Roof flashing should be applied to many more places than those listed above. Most notably is the valleys of your roof. A comprehensive checkout of your roof by a trustworthy roofing service will help you better understand which parts of your home are susceptible to damage from the weather and should receive special treatment.