The roofing market is undergoing a transformation as sustainability, energy efficiency and aging infrastructure become central concerns. This article explores the technical challenges and opportunities in the industry, with a focus on retrofit roofing systems and the role of insulation in enhancing energy efficiency.
Technical Challenges
Aging roofs and their risks. A significant portion of roofs in the U.S. are aging, with many exceeding their expected service life of 20 to 30 years. Older roofs are more prone to structural failures, such as leaks, damage from severe weather and biological deterioration such as mold. They also tend to be less energy-efficient due to degraded insulation and materials, increasing the demand for retrofits or replacements.
Rising costs and labor shortages. The industry continues to grapple with rising material costs and labor shortages. These challenges push contractors to adopt innovative methods to meet demand while maintaining profitability.
Adapting to new code. ASCE 7 has become more stringent over the years and retrofitting provides an opportunity to upgrade code-deficient projects to be compliant with the latest code. This is an opportunity to enhance public safety overall.
Adapting to new technologies. Roofing professionals must stay abreast of advancements in materials and techniques, such as solar integration, drone inspections and smart roofing systems. These technologies improve efficiency but require specialized training.
Opportunities in Retrofit Roofing Systems
Retrofit roofing systems offer a sustainable alternative to complete roof replacements. These systems involve installing a new roofing system over the existing roof, avoiding tear-offs and reducing waste.
Environmental Benefits:
- Waste reduction: Retrofit systems minimize landfill waste by preserving the existing roof structure.
- Carbon footprint reduction: By avoiding the production of new roofing materials, retrofits lower associated carbon emissions.
- Energy efficiency: Retrofit solutions often include cool roofs or reflective coatings that reduce heat absorption, cutting cooling costs.
Insulation Upgrades
One of the most impactful opportunities during a roof retrofit is adding or upgrading insulation. Enhanced insulation improves thermal resistance (R-value), reducing heat loss in winter and heat gain in summer.
Energy savings. Insulation retrofits can reduce energy use by 10% to 45% in residential buildings and up to 9% in commercial spaces like schools.
HVAC system optimization. Improved roof insulation can reduce HVAC system load by 20% to 40%, decreasing mechanical stress, lowering maintenance costs and extending equipment lifespan. By creating a more stable thermal envelope, insulation allows HVAC systems to operate more efficiently, consuming less energy and requiring fewer repair interventions.
Carbon emission reductions. Over a 30-year lifespan, roof insulation upgrades in just 25% of U.S. commercial buildings could save 360 million metric tons of CO2—equivalent to the annual energy use of over 45 million households.
Improved comfort. Proper insulation minimizes drafts and maintains consistent indoor temperatures, enhancing occupant comfort.
Addressing Aging Infrastructure
With many roofs nearing or exceeding their service life, retrofitting offers a cost-effective way to extend their usability while improving performance. This approach is particularly valuable for aging commercial buildings where complete replacements may be disruptive or costly.
Cost-Effective Way to Upgrade
In many cases, completely removing the existing roof and installing a new one is not feasible, as it can disrupt the building’s operations. A retrofit framing system, customized to fit the existing roof profile, can be a cost-effective solution. This approach significantly reduces the overall cost and minimizes disruption to the building.
When overlaying a new roof over an existing one using a retrofit framing system, it is crucial to ensure that the additional dead load does not exceed prescribed code requirements. In some instances, retrofitting with framing on top of the roof can enhance the structural dead- and wind-load capacity of the existing building, thereby extending its lifespan at a minimal cost.
Conclusion
The roofing market is ripe with opportunities for innovation and sustainability. Retrofit roofing systems stand out as a practical solution to address aging infrastructure while reducing environmental impact. By incorporating insulation upgrades during retrofits, building owners can achieve significant energy savings and carbon reductions.
As the industry evolves, embracing these advancements will be key for contractors looking to stay competitive. The focus on sustainability not only aligns with global climate goals but also delivers tangible benefits for property owners through reduced operating costs and enhanced building performance.
Jonnie Hasan is director of engineering & sales support for IMETCO; Josh Younger is the company’s channel marketing lead. For more information, go to www.imetco.com
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