By Greenwood Industries.

Reroofing and historic preservation for building envelopes.

Nearly half of all U.S. commercial buildings were constructed before 1980, and many are now reaching a point where major systems require replacement or restoration. As these systems age, roof assemblies, masonry façades and waterproofing systems that have performed for decades begin to show signs of fatigue, deterioration and water intrusion.

For facility teams, the challenge is not just identifying these issues. It is determining how to address them in a way that balances performance, cost and, in many cases, historic integrity. 

Reroofing and restoration projects are no longer isolated scopes. They require a coordinated approach to the entire building envelope to ensure long-term performance. 

What happens when systems age 

Over time, building materials are exposed to repeated freeze-thaw cycles, UV degradation and moisture infiltration. These conditions gradually weaken roofing membranes, flashing details, sealants and masonry joints. 

What may begin as minor issues, such as small leaks or open joints, can escalate into more significant problems if left unaddressed. Moisture entering the building envelope can travel beyond the point of entry, leading to concealed damage within wall assemblies or structural components. 

In historic buildings, these challenges are often compounded by older materials that were not designed to accommodate movement or modern performance demands. 

The risk of treating symptoms instead of systems 

One of the most common issues in aging buildings is repeated repairs that address visible symptoms but not the underlying cause. 

A roof leak may be patched, but if flashing transitions or adjacent masonry conditions are contributing to the problem, the issue will return. Similarly, repointing masonry without addressing water infiltration from above can accelerate deterioration. Without a system-level evaluation, these repairs become cyclical, increasing costs over time without improving long-term performance. 

Reroofing as an opportunity to improve performance 

Reroofing projects provide an opportunity to do more than replace an aging system. They allow facility teams to evaluate and upgrade critical details that impact the entire building envelope. 

This includes: 

• Replacing or upgrading flashing and edge conditions 
• Addressing drainage and slope deficiencies 
• Coordinating roof-to-wall transitions with masonry systems 
• Improving insulation and overall system performance 

On projects like the Big E Coliseum, in Springfield, Massachusetts, originally constructed in 1916, re-roofing work required balancing modern performance needs with the building’s existing structure, including upgrading the EPDM system while preserving key architectural elements. 

Similarly, work at New Britain Museum of American Art in New Britain, Connecticut and Harris Public Library in Woonsocket, Rhode Island, reflect how reroofing projects often serve as a critical intervention point for extending the life of aging institutional buildings. 

Preserving historic character while upgrading performance 

For historic and institutional buildings, preservation adds another layer of complexity. Maintaining the architectural character of a structure must be balanced with modern performance requirements. 

Projects like Marble House in Newport, Rhode Island required architectural metal work, reroofing and restoration that respected the building’s historic appearance while upgrading performance. At Fairhaven High School in Fairhaven, Massachusetts, Greenwood Industries and TWC Phoenix collaborated on a large-scale restoration that included slate roofing, copper systems, waterproofing and masonry repairs. 

Work on the Cathedral of Saints Peter and Paul in Providence, Rhode Island further demonstrates the level of coordination required on historic structures, where roofing, masonry restoration and waterproofing must all align to protect complex architectural features. 

These projects highlight a key reality: historic restoration is not just about preserving appearance. It requires integrating modern materials and systems in a way that supports long-term durability without compromising the building’s character. 

What to evaluate before starting a project 

If a building is showing signs of aging, consider the following: 

• Are leaks or water-related issues recurring in the same areas? 
• Are roofing systems approaching or exceeding their expected lifespan? 
• Is masonry showing signs of cracking, open joints or deterioration? 
• Are repairs addressing the root cause or only the visible symptoms? 
• Have roof, masonry and waterproofing systems been evaluated together? 

These conditions may indicate the need for a more comprehensive approach rather than isolated repairs. 

Planning for long-term performance 

Addressing aging infrastructure requires more than reactive maintenance. It requires planning, coordination and an understanding of how systems interact across the building envelope. 

Greenwood Industries approaches these projects with integrated teams of roofers, masons and metal fabricators working together to restore historic structures while meeting modern performance demands. By evaluating roofing, masonry and waterproofing together, facility teams can prioritize improvements, align scopes of work and reduce long-term costs associated with repeated repairs. 

A well-planned reroofing and restoration project not only extends the life of the building, but also improves performance and protects structural components. 

Spring and early summer are a critical window for evaluating aging buildings after winter conditions have taken their toll. Freeze-thaw cycles, snow load and prolonged moisture exposure often reveal vulnerabilities across roofing, masonryand waterproofing systems. This is the time to assess these conditions, plan ahead and prioritize projects before minor issues develop into larger repairs during the active construction season. 

If a facility is showing signs of aging, now is the time to take a closer look. 

Closing thoughts 

Across the Northeast, aging buildings are not going away, the way they are maintained is evolving. Reroofing and historic restoration are no longer just repair strategies. They are opportunities to improve performance, extend service life and preserve the structures that define our campuses and communities. 

With the right approach, these projects can move beyond short-term fixes and deliver lasting value for both the building and the people who rely on it. 

By Greenwood Industries.

Proactive planning and informed system selection help reduce risk, extend service life and support resilient performance. 

Winter in the Northeast is rarely predictable. One week brings two feet of snow and the next brings temperatures in the 50s. When severe storms and freeze and thaw cycles come into play, facilities can experience significant stress on the systems designed to protect them. 

Weather conditions place ongoing demands on buildings, challenging owners and facility managers to think beyond short term fixes and consider how well their exterior building systems are prepared to perform year after year, whether newly constructed or decades old.

That planning begins long before a building is occupied. During early design and construction, decisions around materials, detailing and system integration play a major role in how a facility will perform over time. Selecting assemblies that manage movement, control moisture and withstand seasonal exposure helps reduce long term risk and maintenance demands.

At Greenwood Industries, protecting buildings means understanding how severe weather and temperature fluctuations affect every layer of the building envelope. Greenwood’s work spans public, commercial, institutional, infrastructure and historic facilities across the Northeast, giving teams first hand insight into how different building types respond to weather, use and long term exposure. From new roof installations and full building envelope construction to long-term maintenance and restoration, proactive planning and informed system selection help reduce risk, extend service life and support resilient performance. 

The impact of temperature fluctuations 

Repeated freeze and thaw cycles are one of the most damaging forces acting on exterior building systems. When moisture enters small cracks, seams or porous materials and freezes, it expands. Over time, this movement widens openings, stresses connections and accelerates material deterioration.

Roofing systems are often the first line of defense. Membranes must accommodate thermal movement while maintaining continuity. Detailing at flashings, penetrations and transitions is especially critical, as these areas experience the greatest stress during temperature swings.

Masonry and concrete systems face similar challenges. Water infiltration followed by freezing can lead to cracking, spalling and joint failure, particularly in parapets, facades and historic structures. In buildings where architectural character must be preserved, these conditions require specialized expertise and compatible repair methods.  

Storms, wind and water intrusion 

Severe storms introduce additional stresses through wind uplift, driven rain and prolonged moisture exposure. Roofing assemblies must resist wind forces, while architectural metal components require secure attachment and proper expansion detailing.

Waterproofing plays a critical role at foundations, plazas and below grade structures. Systems such as sheet membranes and fluid applied waterproofing are selected based on site conditions and exposure. When properly integrated with drainage systems, these assemblies help prevent water intrusion before it reaches occupied spaces. 

Failures at the building envelope can have wide reaching impacts. Interior finishes, equipment and daily operations may all be affected. For schools, hospitals, municipal buildings and commercial facilities, even minor leaks can disrupt essential services and lead to costly repairs.

Key considerations for new construction 

• Detail assemblies to accommodate movement. Roofing, air and vapor barriers, and waterproofing systems should be designed to manage thermal expansion, structural deflection and transitions between materials. Proper detailing at expansion joints, perimeters and penetrations is essential to long term performance.
• Specify materials and coatings based on exposure and compatibility. System selection should account for UV exposure, moisture load, wind conditions and maintenance access. Reinforced membranes, fluid applied coatings and compatible waterproofing assemblies provide continuous protection when properly specified and installed.

Why maintenance matters, even on new buildings 

New construction does not eliminate the need for maintenance. Exterior systems begin responding to weather, movement and use immediately after installation. Regular inspections help ensure that membranes, sealants, flashings and drainage systems continue to perform as designed once a building is occupied.

This is where Greenwood Performance Advantage™ comes into play. Delivered following new roof and building envelope construction, Greenwood Performance Advantage™ includes a complimentary post installation service period focused on verifying system performance under real world conditions. During this time, Greenwood remains actively involved through inspections and follow-up support to confirm that systems are functioning as intended as they experience weather and use. 

This post ribbon cutting involvement provides owners and facility managers with early visibility into system condition and reinforces accountability beyond project closeout. Addressing minor issues during this phase helps preserve warranties, reduce the likelihood of emergency repairs and support long term system performance.

As buildings move beyond the Greenwood Performance Advantage™ service period, continued oversight becomes increasingly important. Greenwood’s Service Division offers preventative maintenance and repair programs that extend performance over time. GPA 2.0 establishes baseline condition through inspections and reporting. GPA 3.0 adds routine maintenance to reduce preventable wear. GPA 4.0 provides comprehensive support with detailed evaluations and priority response when conditions require immediate attention.

For owners and facility managers, this layered approach supports informed capital planning, extends system life and helps ensure exterior building systems continue to perform well beyond initial construction. 

Expert care for historic buildings 

Historic buildings require a different approach. Original materials and construction methods often cannot be treated the same way as modern systems. Incompatible repairs or coatings can trap moisture, accelerate deterioration or compromise architectural integrity.

Expert maintenance focuses on understanding how historic assemblies manage moisture and movement. Techniques such as compatible masonry repointing, selective waterproofing and breathable coatings help protect performance while preserving character. Experienced care extends the life of historic structures and reduces long term risk.

The role of craft and coordination 

Materials alone do not ensure performance. Proper installation, detailing and sequencing are critical to how systems behave under stress. Coordination between design intent, fabrication and field execution ensures continuity across the building envelope.

Greenwood’s integrated capabilities, supported by the Greenwood family of brands including TWC Phoenix, allow roofing, waterproofing, masonry and historic restoration work to be coordinated in house. This approach supports consistency, accountability and long term performance. 

Looking ahead 

Facilities across the Northeast will continue to face challenging weather conditions year after year. The question is not whether buildings will be exposed, but whether they are designed, constructed and maintained to withstand those conditions over time. 

Protecting a facility starts with understanding its vulnerabilities and addressing them early, from initial planning through the full life of the building. With informed system selection, quality execution and proactive care, owners can reduce risk, control costs and support reliable performance. 

At Greenwood, protecting buildings means designing, building and maintaining exterior systems with resilience and purpose, while caring for the structures that serve our communities.