The combination of wind, heat, and humidity in the Chesapeake Bay region presents major challenges for roofing shingle integrity. This is especially true when major storms push through the region. For most homes, classic architectural shingles are the best choice. However, homes that are in the path of storms or near tree canopies may benefit from impact-resistant shingles. There are various shingle options available, and Chesapeake Roofing, Windows & Siding Inc. can help you choose the best one.
Why Chesapeake Bay Weather Matters When Choosing Shingles
Your home’s exposure to major weather events is a major factor when assessing shingle roofing options. Conditions can vary from one season to the next, making durable shingles a necessity.
Sun and Heat
Summer temperatures in and around Chesapeake Bay are commonly in the 80- to 90-degree Fahrenheit range. With extreme heat exposure, a roof’s temperature can rise to 150 degrees. Shingle materials can develop cracks and then absorb moisture when humidity is high. Temperatures rise during the day and drop at night, creating a cycle of damage from expansion and contraction.
UV rays from the sun break down shingle materials. As granules from your shingles fall off, breakdown accelerates. This problem is particularly common with south-facing roofs.
Coastal Air
Humidity introduces moisture to cracked materials and supporting structures. Salt from coastal air facilitates oxidation, causing fasteners and metal components to fail. Coastal air can expose shingles to algae that feed on the limestone materials in some roofing products. Some manufacturers void warranty coverage around the Chesapeake Bay area for this reason.
Rain and Humidity
This region has an average annual rainfall rate of above 40 inches per year. Water from rainfall can create moisture issues, especially in roof valleys. It also accelerates problems associated with weakened materials. Pooled water damages poor seals, leading to moisture intrusion and mold growth.
Even when it doesn’t rain, Chesapeake Bay experiences high ambient humidity. Following a rainstorm, this makes it harder for a roof to dry.
Wind and Storms
Changing weather conditions, including strong winds from the remnants of a hurricane, can cause substantial roof damage. Standard three-tab shingles are typically rated for conditions up to between 110 and 130 miles per hour. For reference, a low-grade hurricane produces winds of about 75 miles per hour. Most standard three-tab shingles are sufficient for roofs in the Chesapeake Bay area.
Be aware that wind lift is often an issue. When looking at roofing options, consider how well the proposed shingles for a roof hold up to wind lift, especially around the corners. This also impacts how much the shingles break down when pulling against the nails that secure them. Our roofers can help you explore the available options for your home.
What to Look for in Roofing Shingles
The array of shingle types on the market can make choosing roof shingles for your house seem like a difficult process. The difficult conditions in our region eliminate several products.
The easiest upgrade to consider over the standard three-tab shingle is an architectural shingle. These products have a multi-layer design that adds weight and thickness. That mass makes the shingles more wind-resistant, which is a beneficial feature in our region’s weather. Architectural shingles also tend to resist granule loss better. They withstand the heat and humidity cycle better. A bonus is that architectural shingles often last 5 to 10 years longer than traditional shingles do.
Impact-resistant shingles are an upgrade, but they may not be necessary. Made from polymer-modified asphalt or fiberglass, these are products that hold up against hail and debris. The one scenario where you might plan to use an impact-resistant product is if your house is close to a large tree. It only takes one heavy branch hitting your roof to make the investment worth it.
Algae-resistant shingles that use copper granules to inhibit growth are available. Look for products that specify an applicable algae warranty to achieve peace of mind and to save you money long-term.
When to Talk to a Roofing Professional
Chesapeake Roofing, Windows & Siding Inc. has decades of experience providing roofing services to the Chesapeake Bay region. We are licensed, bonded, and insured. You can trust our work thanks to our accreditations as a CertainTeed and Wolverine master craftsman.
If you have questions about roof shingles in Annapolis, MD, or a nearby community, we’re here to help. Contact Chesapeake Roofing, Windows & Siding Inc. today and ask for a free roofing estimate.
