Roofing Manufacturers
Commercial Roofing
Harrisburg, PA
Harrisburg, PA
Sika Sarnafil Roof Systems in Harrisburg, PA
Sika Sarnafil Membrane for Institutional and Architectural Roofs
Sika Sarnafil's reinforced membrane and hot-air-welded seam system has a long track record on architecturally complex and institutional buildings, which is the category of project we bring it up for most often around the State Capitol complex and the medical campus in Hershey.
A Global Manufacturer's Membrane on Architecturally Complex Roofs
Sika is a Swiss-headquartered global manufacturer of construction chemicals and building materials, and Sarnafil is its established roofing membrane brand within that broader portfolio. The product line's reputation runs strongest on institutional and architectural work, buildings with visible parapets, complex flashing conditions, or rooflines that were designed with an architect's attention rather than as a purely functional warehouse shell.
Government office buildings and medical facilities in this market often fall into exactly that category, which is why Sarnafil comes up regularly on our bid list for downtown Harrisburg and the Hershey medical corridor.
Higher-education buildings carry similar characteristics, older academic buildings with additions from multiple decades, each with its own roofline and parapet detail, where a membrane system suited to detail work rather than large open fields tends to be the more practical fit.
Sika's broader chemical and waterproofing product lines also come into play on some of these projects beyond the roof membrane itself, plaza deck waterproofing, below-grade waterproofing on parking structures, which is worth knowing about on institutional campuses managing several building systems under one capital plan.
We treat that broader product relationship as a coordination convenience rather than a reason to default to Sika on every bid, since roof membrane selection should still be driven by the specific building's needs rather than by what other Sika products happen to be in use elsewhere on the same campus.
Reinforced PVC/FEB Membrane and Hot-Air Welded Seams
Sarnafil's membrane uses a reinforcing scrim within a PVC or flexible polyolefin (FEB) formulation, giving the sheet added dimensional stability and tear resistance compared to unreinforced membrane. Seams are hot-air welded, producing the same homogeneous bond strength that defines quality thermoplastic membrane installation generally.
The reinforcement matters most on buildings with complex geometry, where the membrane gets cut, fit, and detailed around more corners and transitions than a simple rectangular warehouse field, and where dimensional stability during installation and over the membrane's service life reduces the risk of stress cracking at those detail points.
We compare Sarnafil's reinforced membrane against other manufacturers' reinforced PVC options on the same basis: scrim weight, weld parameters, and available accessory pieces for flashing details, since those factors matter more on a detail-heavy roof than they would on an open warehouse field.
Custom Flashing and Detail Work on Institutional Buildings
Institutional roofs in this market, government buildings, hospital campuses, higher-education facilities, tend to accumulate custom flashing conditions over decades of incremental renovation: added equipment, modified parapets, and penetrations that weren't part of the original roof design. Sarnafil's membrane and accessory system is built to handle detail-heavy work, and our approach on these projects follows a consistent sequence:
- Field survey every existing penetration, curb, and parapet condition before ordering material
- Prefabricate standard flashing details off-site where possible to improve field quality control
- Hot-air weld all field seams and flashing laps, probe-testing as work proceeds
- Document each non-standard detail photographically for the closeout package
- Coordinate flashing height and termination with the building's existing architectural elements
This level of detail work takes longer than a straightforward warehouse install, which is a cost and schedule conversation we have directly with institutional owners during the bid process.
Long-Term Performance Data and Warranty Terms
Sika Sarnafil publishes long-term field performance data on its membrane systems, drawn from decades of installed roofs, which institutional owners and their facilities teams sometimes request during the procurement process for capital projects. Warranty terms follow the standard NDL structure tied to certified-installer status and documented installation quality control.
We provide this documentation as part of the submittal package on institutional bids, since procurement teams on government and healthcare projects often require more extensive product substantiation than a typical private commercial bid.
We also keep our own photographic and installation-record archive on Sarnafil projects specifically because institutional facilities teams tend to request that documentation years after completion, during a capital-planning review or when a new facilities director is getting oriented to the building's roof history.
Sika Sarnafil: What Institutional Owners Ask
Why would Sarnafil be recommended over a lower-cost TPO on a government building?
It depends on the roof's complexity. On a simple rectangular field, a standard TPO may be the more economical choice. On a roof with extensive custom flashing and architectural detail, Sarnafil's reinforced membrane and detail-focused system can be worth the premium.
What's the difference between PVC and FEB in Sarnafil's product line?
Both are thermoplastic, hot-air-weldable membranes; FEB is a flexible polyolefin formulation offered as an alternative to traditional PVC, with its own specific performance and warranty documentation that we review against the project's requirements.
Does Sika Sarnafil require special installer certification?
Yes, NDL warranty coverage requires the installing contractor to hold current Sarnafil-specific certification, consistent with other major manufacturers' warranty programs.
How does Sarnafil handle a roof with many different rooftop equipment ages and types?
The membrane and flashing accessory system are designed for detail-heavy conditions, which is common on institutional buildings that have added equipment over multiple renovation cycles.
Is Sika a roofing-only company?
No, Sika is a broader global manufacturer of construction chemicals and building materials; Sarnafil is its roofing membrane product line within that larger portfolio.