Historic Preservation & Landmark Building Restoration

Your trusted partner in historic preservation and landmark restoration

Historic preservation presents complex challenges. Landmark buildings must be protected from environmental exposure, aging materials, and evolving performance demands. From civic institutions and museums to heritage sites and historic roofs, each of these structures represents a responsibility beyond function.

At Siplast, our high-performance roofing, waterproofing, and building enclosure systems are designed to help protect original systems and assemblies without sacrificing the character or integrity of the building’s exterior. Our high level of collaboration helps design professionals, contractors, and owners navigate complex detailing, phased construction, and preservation standards with confidence.

Siplast’s iconic roof restoration and preservation work

From UNESCO World Heritage Sites to historic civic buildings, Siplast roofing, waterproofing, and building enclosure systems protect complex roofs, terraces, facades and transitions where preservation and long-term performance must work together.

Project profiles

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Mecklenburg County District Attorney's Office

A hybrid roof system solved leaks across multiple substrates without disrupting daily operations

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New York State Capitol Building

Courtyard roof restoration resolved water intrusion while maintaining historic copper detailing and original design intent.

View State Capitol project profile

Solutions for architectural heritage conservation and historic preservation

A layered approach to lasting performance

Siplast offers integrated roofing, waterproofing, and building enclosure systems designed to restore and extend the service life of landmark buildings.

Paradiene^® SBS roof systems, Teranap^® waterproofing membranes, Parapro^® PMMA flashing, and Paraflex^® liquid-applied solutions work together to manage water, protect original substrates, and preserve architectural integrity over time.

Long term performance

With exceptional elongation and recovery properties, Siplast SBS membranes are high-performance solutions trusted to protect historical structures.
SBS-modified bitumen
Complex detailing

Parapro^® Flashing System is an ideal solution for difficult flashing situations, including equipment supports, I-beams, H-beams, stanchions, conduit, and unusual penetrations.
Parapro PMMA flashing
Material compatibility

Paraflex is a high-performance solution for projects in sensitive environments, as it is low odor, low VOC, and isocyanate free.
Paraflex system

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Jobsite protection

Monarflex^® Temporary Enclosure Systems provide dependable site covering, containment, and weather protection for historic preservation and restoration projects. Designed for demanding environments, Monarflex systems help control dust, debris, and overspray while protecting sensitive structures and occupied spaces. Reinforced sheeting, UV resistance, and a patented grommet system improve durability, reduce tearing, and minimize downtime caused by weather or repairs.

Monarflex systems

Frequently asked questions

Why is impact-resistant roofing critical for protecting historic sites from environmental damage?

High-performance roofing materials that can provide impact resistance, such as Siplast SBS-modified bitumen membranes and Paratherm NH polyiso insulation, can help mitigate the risk of water infiltration and structural damage, while helping to ensure the preservation of the site's architectural heritage.

How can energy efficient roofing systems reduce energy costs in historic structures?

Energy-efficient roofing systems can help reduce operational costs by utilizing highly reflective roof membranes, like Siplast Parasolo TPX and SBS-modified bitumen sheets with light-colored surface options, and advanced insulation can help lower the demand on HVAC systems to potentially lower cooling costs.* By stabilizing indoor temperatures and managing moisture, these systems can help prevent thermal expansion and contraction that can lead to cracks and structural fatigue. This approach helps historic sites meet modern performance standards while maintaining their original architectural character.

What makes durable and dependable roofing the best choice for historic building conservation?

Durable and dependable roofing systems help reduce the frequency of roof replacements, which helps minimize the risk of exposing vulnerable historic interiors to the elements during construction. By investing in a high-quality roofing solution, like Siplast SBS-modified bitumen or PMMA liquid-applied systems, conservators can ensure the building’s integrity is maintained.

How does Siplast use liquid-applied waterproofing to seamlessly integrate unique assemblies in historic preservation projects?

Siplast uses PMMA liquid-applied waterproofing to create a seamless layer that conforms to the irregular geometries and intricate transitions common in historic structures. This flame-free application provides a monolithic bond that bridges varying materials without the need for mechanical fasteners. By integrating PMMA resins with traditional membrane systems, Siplast can ensure that irregular architectural details remain watertight without compromising the building's original aesthetic or structural integrity.

* Energy cost savings are not guaranteed and the amount of savings may vary based on climate zone, utility rates, radiative properties of roofing products, insulation levels, HVAC equipment efficiency, and other factors.