Roofing and Skylights | Vulcan Polycarbonate Sheet Solutions

In the rapidly evolving landscape of construction and architectural design, transparency, durability, and energy efficiency have become essential components of modern structures. Among the many materials that meet these criteria, polycarbonate has emerged as a front-runner, especially in the field of roofing and skylight solutions. Within this category, VULCAN Polycarbonate Sheets stand out as one of the most advanced and trusted options.

Engineered for both function and aesthetics, VULCAN polycarbonate sheets are a premium solution used across residential, commercial, agricultural, and industrial sectors. We shall dive into the extensive benefits, technical features, installation best practices, and wide-ranging applications of VULCAN polycarbonate sheets as roofing and skylights materials.

Understanding VULCAN Polycarbonate Sheets: A Material Revolution

Polycarbonate is a thermoplastic polymer known for its outstanding optical clarity, high impact resistance, and excellent thermal stability. It is 250 times stronger than glass yet weighs only about half as much. Its high-impact resistance, UV stability,  transparency, and thermal performance make it an ideal choice for exterior applications such as skylights, awnings, greenhouses, and translucent roofing.

VULCAN, as a brand, represents a high-quality iteration of this material, engineered specifically for construction applications requiring robust performance and aesthetic appeal. These sheets are typically manufactured through an extrusion process, creating various profiles including solid flat sheets, multiwall sheets (featuring internal ribs that create air pockets for enhanced insulation), and corrugated panels.

Vulcan Polycarbonate sheets are manufactured using 100% virgin polycarbonate resin, which is co-extruded with UV-protective or additional layers such as Infrared (IR) or heat blocking functionalities.

VULCAN Polycarbonate Advantages

Compared to other plastic glazing materials, VULCAN Polycarbonate sheets offer the following advantages:

1. High Visible Light Transparency: Known as one of the most transparent plastic, with an 85%~88% visible light transmission rate on clear sheets, polycarbonate sheets are comparable to clear float glass which is rated at 75%~92%.
2. Exceptional Impact Resistance: Perhaps the most celebrated property of polycarbonate is its high impact strength. Virtually unbreakable, VULCAN polycarbonate sheets have 250 times the impact strength over glass and 10 times over FRP and Acrylic, which lowers the risk of breakage even when subjected to violent blows from heavy objects, and capable of withstanding extreme weather conditions such as hail, strong winds, and heavy snow loads without shattering, making them a safe and durable choice.
   (Read more: Acrylic Glass vs Polycarbonate: Which is Better for Your Needs? )
3. Lightweight Nature: Despite their incredible strength, polycarbonate sheets are remarkably lightweight. This characteristic simplifies transportation and installation, reduces the structural load on buildings, and can lead to cost savings on supporting frameworks.
4. Superior Light Transmission: Depending on the grade and thickness, VULCAN Polycarbonate sheets can transmit up to 90% of natural light, rivaling glass in clarity. This allows for ample daylighting, reducing the reliance on artificial lighting during the day.
5. UV Protection: A critical concern for materials exposed to sunlight is degradation from ultraviolet (UV) radiation. VULCAN Polycarbonate sheets are commonly co-extruded with a UV protective layer on one or both sides, which filters out harmful UV rays. This not only protects the material from yellowing and embrittlement over time but also safeguards interior furnishings and occupants from UV damage.
6. Thermal Insulation: Multiwall polycarbonate sheets in particular, offer excellent thermal insulation properties. The air pockets within their structure create a thermal break, significantly reducing heat transfer and contributing to improved energy efficiency by keeping interiors warmer in winter and cooler in summer.  For polycarbonate solid sheets, VULCAN offers a variety of options that either offer extra shade or Infrared (IR) cutoff further enhance its thermal insulation properties.
7. Flexibility and Formability: Polycarbonate can be cold-formed or thermoformed into various shapes without losing its structural integrity. This flexibility allows for innovative architectural designs, such as curved roofs, arched skylights, and bespoke structural elements that would be difficult or impossible with rigid materials.
8. Fire Resistance: VULCAN Polycarbonate sheets are self-extinguishing and meet various fire safety standards. One of the key characteristics of this high polymer is its excellent resistance to flame and stability in heat, making it a suitable choice in dry, heated areas, and is also a good choice for household and industrial glazing.
9. Chemical Resistance: Polycarbonate sheets exhibit good resistance to a wide range of chemicals, which is crucial for applications in industrial environments or areas exposed to pollutants. VULCAN polycarbonate sheets exhibit good chemical resistance against diluted acids, aliphatic hydrocarbons and alcohols; moderate chemical resistance against oils and greases. However, polycarbonate is readily attacked by diluted alkalis, aromatic and halogenated hydrocarbons.

VULCAN Polycarbonate as a Premier Roofing Solution

The application of VULCAN Polycarbonate sheets in roofing has seen a dramatic increase due to their unique combination of benefits. Unlike opaque roofing materials, polycarbonate allows for the integration of natural light, transforming dark, enclosed spaces into bright, inviting environments.

Key Advantages for Roofing:

• Optimized Natural Lighting: The primary driver for polycarbonate roofing is the desire for natural light. For industrial buildings, warehouses, sports arenas, and even residential patios or carports, incorporating polycarbonate panels can drastically reduce electricity consumption by minimizing the need for artificial lighting during daylight hours. This translates directly into energy savings and a lower carbon footprint.
• Exceptional Durability and Weather Resilience: In regions prone to extreme weather, the shatterproof nature of VULCAN Polycarbonate is invaluable. It can withstand impacts from large hailstones, resist damage from falling debris, and endure high wind loads, providing a robust and reliable roof that requires minimal maintenance and replacement.
• Longevity and Low Maintenance: With proper installation and the integrated UV protection, VULCAN Polycarbonate roofs can have a service life of 10 to 20 years or more. Their smooth surface also resists dirt accumulation, making cleaning infrequent and straightforward.
• Aesthetic Versatility: Available in various tints (clear, bronze, opal, grey) and textures, VULCAN sheets can complement diverse architectural styles. The ability to form them into curved or custom shapes further enhances design freedom, allowing for visually striking and unique roof structures.
• Ease and Speed of Installation: Being lightweight, these sheets are easier and safer to handle during installation, reducing labor costs and construction time compared to heavier materials like glass or traditional tiles. They can be cut to size on-site and are compatible with standard roofing frameworks.
• Long-Term Cost-Effectiveness: While the initial cost of high-quality polycarbonate might be slightly higher than some conventional materials, the long-term savings from reduced energy consumption, lower maintenance needs, and exceptional durability often lead to a lower total cost of ownership over the lifespan of the roof.

Common Roofing Applications:

• Patios and Pergolas: Creating bright, sheltered outdoor living spaces.
• Carports: Protecting vehicles from the elements while allowing light to penetrate.
• Conservatories and Sunrooms: Maximizing natural light and warmth.
• Sheds and Outbuildings: Illuminating interior spaces without electricity.
• Industrial and Commercial Buildings: Providing daylighting for large interior areas, improving worker morale and reducing operational costs.
• Walkways and Canopies: Offering weather protection while maintaining visibility.
• Swimming Pool Enclosures: Creating comfortable, naturally lit environments.

VULCAN Polycarbonate as the Ideal Choice for Skylights

Skylights serve as architectural apertures designed to bring natural light deep into the interior of a building, often reaching areas inaccessible to vertical windows. VULCAN Polycarbonate sheets are exceptionally well-suited for this purpose, offering distinct advantages over traditional glass skylights.

Key Advantages for Skylights:

• Unparalleled Natural Illumination: Skylights made from VULCAN Polycarbonate flood interiors with diffuse, glare-free daylight, reducing the need for artificial lighting and fostering a healthier, more productive indoor environment. The ability to choose different tints allows for control over light diffusion and heat gain.
• Enhanced Energy Efficiency: Multiwall polycarbonate skylights provide superior thermal insulation compared to single-pane glass. This helps maintain stable indoor temperatures, reducing heating and cooling loads and contributing significantly to a building’s overall energy efficiency.
• Safety and Security: The shatterproof nature of polycarbonate is a paramount safety feature for skylights, especially in public buildings, schools, or homes. In the event of impact from falling objects or vandalism, VULCAN sheets will not break into dangerous shards, mitigating the risk of injury. This also makes them a more secure option against forced entry.
• Design Flexibility: Polycarbonate’s formability allows for the creation of innovative skylight designs, including domes, pyramids, barrel vaults, and custom shapes that can become striking architectural features. This provides architects with greater creative freedom than rigid glass panels.
• UV Protection: As with roofing, the UV protective layer on VULCAN Polycarbonate skylights ensures the longevity of the material while also protecting interior spaces from harmful UV radiation, which can fade fabrics, artwork, and furniture.
• Noise Reduction: The multiwall structure of polycarbonate sheets can also contribute to improved acoustic insulation, reducing outside noise penetration and creating a quieter indoor environment.

Common Skylight Applications:

• Residential Homes: Brightening living areas, kitchens, bathrooms, and stairwells.
• Commercial Offices: Enhancing employee well-being and productivity with natural light.
• Shopping Malls and Atriums: Creating grand, naturally lit public spaces.
• Schools and Universities: Providing optimal lighting for learning environments.
• Hospitals and Healthcare Facilities: Promoting a sense of openness and healing.
• Museums and Galleries: Illuminating exhibits with soft, natural light while protecting them from UV degradation.
  
  

Installation and Maintenance Considerations

While VULCAN Polycarbonate sheets offer numerous benefits, proper installation is crucial to maximize their performance and longevity. Key considerations include:

• Support Structure: Adequate framing and support are necessary, especially for multiwall sheets, to prevent sagging and ensure proper load distribution.
• Thermal Expansion: Polycarbonate expands and contracts more than metal or wood with temperature changes. Proper allowance for thermal expansion must be made at joints and fastening points to prevent buckling or cracking. Oversized drill holes and flexible gaskets are often used.
• Fasteners and Sealants: Specialized fasteners designed for polycarbonate, often with neoprene washers, should be used to allow for movement while providing a watertight seal. High-quality, compatible sealants are essential to prevent leaks and ensure long-term integrity.
• UV Side Orientation: It is critical to install the UV-protected side of the sheet facing outwards towards the sun. Improper orientation will lead to premature degradation and yellowing of the material.
• Slope and Drainage: For roofing and skylights, an adequate slope must be ensured to allow for efficient water runoff and prevent ponding.

Read more: 

Polycarbonate Roof Installation : Everything You Need to Know

Screws for Polycarbonate Roofing: Installation Guide

Cleaning and Maintenance Considerations

While VULCAN Polycarbonate sheets are literally unbreakable and last for years to come, proper cleaning and maintenance is crucial to maximize their performance and longevity.

• Regular cleaning with mild soap and water is recommended.
• Abrasive cleaners or solvents should be avoided as they can damage the UV coating or the sheet itself.
• Fillers, oil, paint or adhesive on the surface should be removed by isopropyl alcohol with soft cloth (avoid any vinyl based fabric) as soon as possible. Rinse immediately with clean, cold water.
• For moss, mould, mildew, and lichen, we recommend the following solutions from the 30 Seconds range of exterior cleaning products, which are particularly designed to resolve these issues.
  • For a quick clean: 30 Seconds Outdoor Cleaner (Blue Label) It is simple to use and effective for the treatment and removal of moss, mould, mildew and algae.
  • For a progressive clean: 30 Seconds Spray & Walk Away (Green Label) It provides a gentle none aggressive clean over time the environment does all the work for you, so less effort and work required than the aforementioned Blue Label Outdoor Cleaner. It works progressively over time and that you will see ongoing cleaning from the day of spraying until the surface is clean. Be advised that the surface needs to be exposed to sun and rain.

Read more: Handling, Storage & Cleaning Polycarbonate Sheets

Environmental Impact and Sustainability

The use of VULCAN Polycarbonate sheets aligns well with contemporary sustainable building practices. Their ability to maximize natural light significantly reduces the need for artificial lighting, leading to considerable energy savings over the building’s lifespan. The excellent thermal insulation provided by multiwall sheets further contributes to energy efficiency by lowering heating and cooling demands.

Furthermore, polycarbonate is a recyclable material, and many manufacturers are increasingly incorporating recycled content into their products, promoting a circular economy in construction. Its long lifespan also means fewer replacements and less material waste over time.

Challenges and Limitations

Despite their numerous advantages, VULCAN Polycarbonate sheets do have some limitations to consider:

• Scratch Resistance: While highly impact-resistant, polycarbonate is more susceptible to scratching than glass. Care must be taken during handling, installation, and cleaning.
• Thermal Expansion Management: As noted, proper design and installation techniques are imperative to accommodate thermal expansion, which if neglected, can lead to structural issues. VULCAN offers fastening solutions that completely eliminates the complicated process of pre-drilling thermal expansion holes and covering them to prevent leakage.
• Initial Cost: The upfront cost of high-quality polycarbonate can sometimes be higher than basic alternatives. However, when complete building solutions are taken into consideration, the overall cost of the structure, framing, and accessories add up to only a fraction of a glass covered structure.
• Potential for Discoloration (if unprotected):  VULCAN sheets come with double-sided Co-Extruded, high concentration UV and Light Stabilizers protection. However, not all polycarbonate sheets are created equal. Sheets using recycled base resin, lower-quality UV material or even unprotected, can yellow or become brittle when exposed to sunlight in as short as 6 month’s time. It is crucial to source materials from reputable manufacturers like VULCAN to ensure integrated UV protection.

A Smarter Material for Roofing and Skylights: VULCAN Polycarbonate

VULCAN Polycarbonate sheets represent a paradigm shift in the selection of materials for roofing and skylights applications. Their unparalleled combination of impact resistance, lightweight design, superior light transmission, and energy efficiency makes them an increasingly popular and practical choice for a diverse range of residential, commercial, and industrial projects. 

From enhancing natural light and reducing energy consumption to providing robust protection against harsh weather and enabling intricate architectural designs, the benefits are clear. 

While installation requires attention to detail, the long-term advantages in terms of durability, low maintenance, and sustainability firmly establish VULCAN Polycarbonate as a versatile and forward-thinking material, shaping the future of illuminated and resilient building envelopes. 

As architecture continues to evolve towards more sustainable and aesthetically dynamic forms, the role of advanced materials like VULCAN Polycarbonate will only become more pronounced. Contact us today to learn how VULCAN Polycarbonate can elevate your next project.

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