Roofing

4 Differences Between Commercial and Residential Roofs

Understanding the difference between commercial and residential roofs is important if you own both types of properties.  While both roofing types have the same basic job—providing shelter to the building—they have some key differences:

  1. Design: The most obvious difference is the design. Residential roofs can typically be seen from the curb, so style and design are bigger priorities. Most residential roofs feature high slopes that provide rich architectural texture. Commercial roofs, on the other hand, tend to be too far up from the ground to be visually appreciated, so style is not as important. Commercial buildings tend to feature flat roofs, which allow placement of HVAC units and exhaust vents, rooftop cafes, or even a helipad.
  2. Materials: You have a wider selection of materials for residential roofing, including asphalt shingles, tile, and metal, each of which offer different aesthetic and functional benefits. Commercial buildings tend to be taller and thus require more protection against high winds than residential properties, necessitating “tougher” roofing materials like built-up roofs and TPO. Modern-style homes are increasingly featuring flat roofs, and can use the same roofing materials as commercial properties, but on a smaller scale.
  3. Installation: High slope roofs—typical of residential properties—tend to have a roof deck, where a waterproofing membrane called underlayment is laid down before the main roofing material is installed. The high slope creates a simple yet efficient way to shed rainwater into the gutters. This design is not practical for most commercial properties due to their larger size. The main challenge in commercial roofing, which is typically flat, is preventing pooling water. Commercial roofs must be installed evenly, without lumps or valleys.
  4. Maintenance: Commercial roofs tend to be easier to inspect and maintain because they are flat, which makes it easier and safer for roofers to work on them. Residential roofs with high slopes are more dangerous; roofers need to use special safety equipment when completing inspections, repair, and maintenance.

If you own both commercial and residential properties, hiring a contractor that specializes in both roofing types will make your life a lot easier. At Earl W. Johnston Roofing, LLC, we are experts in both commercial and residential roofing, and we serve Hollywood and Ft Lauderdale, FL. To learn more about our residential and commercial roofing services, call us today at (954) 989-7794 or fill out our contact form to request a quote or get a free storm damage inspection.

Earl Johnston

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