Get matched with top roofers in Union Hall, VA

When choosing a roofer to install a green roof, look for someone with experience who specializes in green roofs. Rather than looking for a standard roofing contractor, you'll want to find a company that specifically offers green roofs. That company will have people on staff, such as a landscape architect, who understand the types of plants that thrive on rooftops.

The most crucial roof-strengthening method is achievable by following proper construction methods and guidelines from the start. To strengthen an existing roof, framers and DIYers can add hurricane ties or straps to the structure, sister rafters and other framing or truss members, or install additional fasteners or adhesives where necessary.

The proper specifications for furring strips can vary, so you should always consult the roofing manufacturer's guidelines or your roofer. However, general recommendations are as follows:

• Thickness: Furring strips are typically 1 to 1-1/2 inches thick, meaning standard 1-by or 2-by lumber works well. In areas with extreme winds, a thinner strip may be preferred to limit how much air can get under the roof and cause uplift. A thicker strip can add slightly more insulation but will also increase installation costs.

• Spacing: The recommended spacing for furring strips is between 12 and 24 inches apart on center. Proper spacing is crucial for ensuring good airflow, adequate drainage, noise reduction, and better energy efficiency. The ideal spacing can depend on the roof's pitch and the specific type of metal roofing being installed.

The principal, common, and auxiliary rafters are the most frequently used types of rafters. Principal rafters are large and typically appear toward the edges of the roof. Common rafters are smaller than principal rafters. Some people may use a mix of common and principal rafters. The auxiliary rafter is not common, but it provides extra reinforcement for a principal rafter on a large building.