How Humidity Affects Roofing

When it comes to roofing, there are many factors that must be considered. Depending on where you live, you might want to consider if the material is fire resistant or if it deflects heat and lowers energy bills.

You might also want to consider how the roof looks and whether it’s compatible with the style of your home. There are many roofing options including shingles, metal and slate. Contact Canton Roofing Contractor now!

Humidity is a major factor that affects your roofing, and it’s important to understand how humidity can impact the durability and lifespan of your roof. The following blog post from roof replacement and installation experts Superior Roofing discusses some of the ways humidity can affect your home’s rooftop.

Humidity is the amount of water vapor present in the air. It’s commonly measured with a hygrometer, which is an instrument used to measure the relative humidity of the air. The higher the hygrometer reading, the more water vapor in the air. There are three primary types of humidity: absolute, relative and specific.

The most common way humidity impacts your roof is through moisture accumulation. When there’s too much water vapor in the air, it can seep into your roof through cracks and crevices. This can lead to serious damage, especially if the moisture is allowed to sit for a long time.

Moisture can also increase the risk of mold and mildew growth on your roof. This can pose a health hazard to your family, and it may also cause structural damage to the wooden parts of your roof. Additionally, if left unchecked, mold and mildew can cause your roofing to rot, which can further damage your home.

Excessive humidity can also affect the performance of your roof insulation. When insulating materials are saturated with moisture, they lose their ability to hold heat and cold in the air, which can significantly raise your energy costs.

The good news is that there are many ways you can help reduce the level of humidity in your home, and this can protect your roof from damage. This includes using dehumidifiers, running exhaust fans after showering and cooking, and ensuring your roof is properly sealed and maintained. By taking these steps, you can ensure that your roof will continue to protect your home and your family for years to come.


Roofing materials, such as adhesives and sealants, must be properly applied at the proper temperature in order to fully bond and cure. Applying these materials at a low temperature can inhibit the curing process, leading to water infiltration and structural damage. Choosing products specifically formulated for the prevailing temperature and following manufacturers’ guidelines on application is vitally important to ensuring a strong and durable roof.

Your roof is one of the biggest factors that affects the temperature of your home throughout the day and night.


Depending on how fast and how hard the wind blows, the impact can be severe or relatively minor. When it comes to roofing, high winds can cause many types of damage. The type of damage will depend on the direction, shape, and construction of the roof. It will also depend on the type of weather event that is causing the high winds. Typically, the higher the wind speed, the more damage will occur.

When the wind blows, it creates areas of high and low pressure. High-pressure zones push against surfaces, while low-pressure zones pull. The combination of these forces can result in a variety of effects on roofing, including uplift and scouring.

Uplift results when the force of wind lifts the granule surface layer of shingles from the underlayment. This can lead to loss of laminar flow and the formation of voids where rain may infiltrate the building. Uplift can also occur when the air pressure in a home decreases during an intense storm. The reduced air pressure causes the roof sheathing to rise up against the house, creating an area of suction that can pull on the shingle surface and create damage.

Scouring is the most common wind-related roof problem, and it can occur in a number of ways. High winds can carry granules off of the roof surface, or they can remove the gravel coating from Built-Up Roofs. This can expose the underlayment to water, which can deteriorate it over time and lead to leaks in the home. The most important factor for avoiding this damage is to ensure that the roofing materials are properly attached to the roof deck and sheathing. Inadequate or improperly secured fasteners are the most common culprits.


Flashing is a strip of impervious material (usually metal) that prevents water from seeping through areas where different types of roof materials or components intersect. This can include wall and chimney intersections, roof valleys, skylights, vent pipes, dormers and more. Without flashing, these areas would leak, causing damage to the underlying structure and interior of the building. Flashing acts as a safeguard against these vulnerable areas and directs rainwater so that it runs back over the roofing materials and off the roof into a gutter system.

Generally, roof flashing is made of galvanized steel or aluminum. It’s a sheet of thin metal that is bent into shape to fit the joint where it’s installed on a roof. This type of flashing is also commonly referred to as “caulk flashing.” It’s often found on shingle roofs, as well as on metal roofs.

There are several types of flashing, all designed for specific purposes. For instance, valley flashing is typically a V-shaped channel for the water that runs into areas where two downward roof slopes meet. It may be hidden under shingles, or it may be exposed, depending on the look desired. Other types of flashing include step flashing, which is a series of overlapping pieces that protects a gap, and pipe flashing, which resembles a one-piece collar that fits around the diameter of a vent or pipe.

In addition to roof flashing, a skilled roofer will install wall flashing in places like window frames, door frames and the foundation of the home. This ensures that water doesn’t seep through these areas and causes issues like foundation cracks and rot.

Many types of flashing are available, including colored flashings that can be matched to the color of the roofing and trim for a consistent and polished appearance. In addition to enhancing the beauty of a building, these flashings can also be made from materials that are highly resistant to corrosion and moisture. This makes them ideal for protecting the integrity of a structure from weather damage and preventing indoor problems like mold.


Located under your roof’s overhang, the soffit is the part of your home that protects the rafters from moisture damage. It also provides a finished look for the eaves of your home and can be constructed from a variety of materials. Soffits come in vented or non-vented options to allow for air flow and prevent moisture buildup, which can lead to mold, mildew, and rot.

Soffits can be used to cover unsightly wires, tubing, and beams, making them a great solution for homes that have been upgraded from traditional wood siding or clad in aluminum, vinyl, or steel. They can also be used as a way to add some character or style to your home’s exterior and complement the design of your fascia.

When paired with a fascia, the soffit provides a complete look for your home’s overhang. They can be built from a wide range of materials, but pairing them with LP SmartSide trim and siding is one of the most durable choices available. These boards are designed to last for years, and they’re a great way to make your house the envy of the neighborhood.

In addition to protecting the rafters from moisture, the soffit can help to regulate temperatures and airflow in the attic. Proper attic ventilation is crucial for preventing moisture damage and improving energy efficiency, especially during extreme weather. It can even prolong the life of your roofing materials.

Soffits and fascia are essential components of a properly functioning sloped roof, but many homeowners aren’t familiar with them. This can result in a lack of proper maintenance and damage to the structure of your home. If you notice that your soffits or fascia are damaged, it’s important to have them repaired as soon as possible. Doing so can help you avoid pest infestations, structural damage, and high energy bills.