Sika Sarmafil

TIME TO REFLECT: Sika Sarnafil's G410 and S327 EnergySmart Roof membranes help reduce the heat island effect for buildings with flat roofs. The thermoplastic PVC-polymer membranes are highly reflective and minimize heat gain. The membranes are appropriate for adhered systems and are formulated for long-term, direct exposure to the elements, making them decay- and weather-resistant. For more information, call Sika Sarnafil at 800-451-2504 or visit Not only are roofs one of the most expensive investments that multifamily owners and developers can make to their properties, but they also can have the biggest impact on the property's look and performance. From traditional asphalt shingles and synthetic shingles that mimic the look of slate for apartment and condo buildings are wide and varied. “There is no one single best roofing system because that depends on individual preference,” says Sam Latona, pre-construction manager with Dallas-based Turner Construction Co., who advises owners and developers to think of roofs the way they think of cars—they come in various styles, designs, and colors, but they are best distinguished by engineering, cost, warranty, and maintenance issues. For example, metal roofing can cost up to three times more than traditional roofing materials but lasts over 50 years, is considered a green product, and requires little more than occasional cleaning. Pittsburgh-based CENTRIA offers a structural standing seam roof panel system that contains an average post-consumer recycled content of 23.5 percent and an average pre-consumer recycled content of 6.4 percent. The panels have earned Cradle-to-Cradle Silver certification from the U.S. Green Building Council. Flat roofs—mid-rise and high-rise buildings—require thermoplastic polyvinyl chloride (PVC) sheeting or sprayed polyurethane foam, Latona says. Turner Construction used thermoplastic PVC from Canton, Mass.-based Sika Sarnafil on the roof of The Metropolitan, a 283-unit high-rise condominium property at 1200 Main Street in downtown Dallas. Thermoplastic PVC is available in highly reflective colors to reduce the heat island effect. Property owners can install vegetative green roofs on properties with flat roofs, reducing the amount of energy needed to heat and cool the properties. However, installing a green roof can cost from $10 to $12 per square foot more than a standard roof and requires waterproof membranes to protect against mold and rot, according to John Francis, owner of Washington, D.C.-based commercial and residential roofing company NV Roofing. Depending on the roof material and quality, along with environmental factors such as climate as well as location, roofs need to be replaced every 10 to 20 years. Owners can expect to spend from $6 per square foot to $20 per square foot, again, depending on roof material. Asphalt shingles are the least expensive, averaging $6 per square foot, while slate and copper roofs are the most expensive at more than $20 per square foot.

1. SUPER SHINGLES: Manufactured specifically for roofs with steep slopes, GAF's Timberline Series offers asphalt shingles that are up to 25 percent thicker and heavier than other shingles. With a heavyweight design and adhesive seals, the Timberline Ultra Roof Shingles have a Class A fire and wind rating and can hold up against a warranted 110 mph winds. For more information, call GAF at 973-628-3000 or visit

DaVinci Roofscapes now offers a synthetic version of the traditional Fancy Shake shingle that features a natural cedar look. Available in four wood-toned blends, DaVinci shingles are color-through and embedded with DaVinci's unique UV stabilizers to resist fading. The shingles come in 5-inch, 7-inch, and 12-inch widths. For more information, call DaVinci at 800-328-4624 or visit

CENTRIA's SRS Roof Panels are asymmetrical, mechanically seamed, structural standing seam roof panels that can be used on low-slope roofs. The panels contain 23.5 percent post-consumer recycled content, 6.4 percent pre-consumer recycled content, and have earned Cradle-to-Cradle Silver certification from the U.S. Green Building Council. For more information, call CENTRIA at 412-299-8218 or visit

Hyload Waterproofing's coal tar elastomeric (CTEM) membrane acts as a foundation for vegetative green roofs. A combination of coal tar, PVC, and Elvaloy, a high-molecular-weight PVC plasticizer, makes the membrane chemical resistant and impervious to mold, mildew, rot, and root penetration. For more information, call Hyload Waterproofing at 800-457-4056 or visit

Ludowici Roof Tile's LudoSlate combines the advantages of natural clay and the aesthetics of slate. Lightweight and durable, LudoSlate comes with a 75-year warranty and is available in a broad array of colors and blends that mimic classic slate colors. The LudoSlate line includes LudoSlate Premier, which offers varied widths for a more random appearance. For more information, call Ludowici at 800-945-8453 or visit For more information on these and other products, visit