What to consider when selecting a commercial re-roofing system

By Jesse Sanchez. 

A successful commercial re-roofing project starts with understanding the existing roof, building operations and long-term performance goals. 

Commercial re-roofing requires a different approach than new construction as contractors and building owners must work with an existing roof assembly, occupied spaces, rooftop equipment, drainage conditions and other established building factors. Versico Roofing Systems emphasizes the importance of considering these existing conditions when evaluating the right approach for a re-roofing project. 

Before selecting new materials, project teams should evaluate what is already in place. Existing roofs may contain multiple layers of membrane, insulation, cover boards, coatings, adhesives and other components that can affect whether a new system can be installed over the existing assembly or whether a complete tear-off is necessary. 

Visual inspections, core cuts, moisture surveys and reviews of previous repairs and maintenance can help identify conditions that are not visible from the surface. If the roof is in suitable condition, a re-cover system may help reduce tear-off labor, disposal requirements and disruption. Wet insulation, deteriorated materials, damaged decking, corrosion or drainage problems, however, may require removal and replacement. 

Building use should also influence system selection. Because many commercial re-roofing projects occur while facilities remain occupied, contractors should consider installation schedules, odors, fumes, noise, rooftop access, weather and potential interruptions to occupants and building function. 

Compatibility is another important consideration. Commercial roofs are complete assemblies made up of membranes, insulation, cover boards, adhesives, fasteners, flashings and accessories. Evaluating those components as a system can help identify potential conflicts before installation and reduce unexpected repairs or field adjustments. 

Initial cost is only one part of the decision. Building owners should also consider energy efficiency, durability, maintenance requirements, expected service life and environmental considerations. A re-roofing project may also provide an opportunity to improve insulation and thermal performance. 

Ultimately, the appropriate system is one that works with the existing building while supporting the owner’s performance, budget and operational goals. 

Learn more about evaluating commercial re-roofing options by considering the existing roof assembly, building conditions and complete roofing system!