Underlayment Complies with Florida Building Code

MetShield HT underlayment from Drexel Metals was issued a Product Control Notice of Acceptance (NOA No.: 16-0322.26) for use in Miami-Dade County and its municipalities.

MetShield HT underlayment from Drexel Metals was issued a Product Control Notice of Acceptance (NOA No.: 16-0322.26) for use in Miami-Dade County and its municipalities.

MetShield HT underlayment from Drexel Metals was issued a Product Control Notice of Acceptance (NOA No.: 16-0322.26) for use in Miami-Dade County and its municipalities.

MetShield HT has been designed to comply with the Florida Building Code, including the High Velocity Hurricane Zone of the Florida Building Code. MetShield HT meets the requirements of ATSM D1970, for self-adhering polymer modified bituminous sheet materials used as steep slope roofing underlayment for ice dam protection.

Air and Vapor Barrier Creates a Seal Between a Low-slope Roofing System and the Building Below

F1 Air & Vapor Barrier from Mule-Hide Products Co.

F5 Air & Vapor Barrier from Mule-Hide Products Co.

F5 Air & Vapor Barrier from Mule-Hide Products Co. allows contractors to quickly and easily create an air- and vapor-tight seal between a low-slope roofing system and the building below.

F5 Air & Vapor Barrier is compatible with a wide variety of roofing systems and can be used on primed substrates, including concrete, plywood, exterior gypsum, DensDeck Prime and SECUROCK. It also can serve as a temporary roof for up to 120 days while work on the finished roofing system is completed.

The membrane is a 40 mil-thick composite consisting of 35 mils of self-adhering rubberized asphalt laminated to a 5 mil-thick woven polypropylene film. Rolls are 39 inches wide and 75 feet long and cover approximately 244 square feet of substrate surface.

F5 Air & Vapor Barrier’s factory-controlled thickness helps ensure that the membrane has uniform barrier properties, reducing moisture movement through the roofing system and helping keep conditioned air inside the building and unconditioned air outside. The woven polypropylene film makes the membrane highly resistant to tears and punctures. The non-skid surface helps keep contractors safe on the job site and is suitable for the bonding of subsequent layers of the roofing system.

A siliconized one-piece release liner prevents the material from bonding to itself in the roll and is easily removed during installation of the barrier.

Underlayments Can Be Exposed for Up to Six Months

National Nail has expanded its STINGER line of roofing products with three ICC-certified synthetic underlayments: EXO50, EXO35 and EXO25.

National Nail has expanded its STINGER line of roofing products with three ICC-certified synthetic underlayments: EXO50, EXO35 and EXO25.

National Nail has expanded its STINGER line of roofing products with three ICC-certified synthetic underlayments: EXO50, EXO35 and EXO25. The underlayments are UV-resistant and can be exposed for up to six months. The synthetic woven fabrics offer high tear strength, and proprietary non-skid additives provide better roof deck contact for high slip resistance. Each roll is lightweight and, with 10 squares per roll, fewer rolls need to be carried to the roof. In addition, preprinted nailing patterns and overlap lines speed installation. STINGER cap fasteners (StaplePac and NailPac) and STINGER cap hammers, cap staplers, and cap nailers are recommended for installing all STINGER EXO products.

Insulation Can Act as Standalone Underlayment

Environmentally Safe Products Inc.’s Therma Sheet roofing underlayment has been certified by the International Code Council Evaluation Service.

Environmentally Safe Products Inc.’s Therma Sheet roofing underlayment has been certified by the International Code Council Evaluation Service.

Environmentally Safe Products Inc.’s Therma Sheet roofing underlayment has been certified by the International Code Council Evaluation Service. The designation means Therma Sheet meets the code requirements of a standalone roofing underlayment for the building industry. Previously, code required roofers to install Therma Sheet over a layer of felt paper or another underlayment. Therma Sheet insulation is constructed of 99 percent pure polished aluminum facings, heat laminated to a closed-cell polyethylene foam core. This patented process makes Therma Sheet a thermal and moisture barrier under metal roofing, stone-coated steel, concrete, clay tile and more.

Synthetic Underlayment Provides More Coverage per Roll than Traditional Felt

Atlas Roofing, a producer of felt underlayment, produces a lightweight, synthetic alternative to organic felt known as Summit 60.

Atlas Roofing, a producer of felt underlayment, produces a lightweight, synthetic alternative to organic felt known as Summit 60.

Atlas Roofing, a producer of felt underlayment, produces a lightweight, synthetic alternative to organic felt known as Summit 60. This underlayment, manufactured from strong woven polypropylene fabric, offers advanced benefits not available with traditional felt.

Summit 60 Synthetic Underlayment, which has high-temperature stability and offers greater resistance to UV breakdown than felt, has the durability needed for jobs that have a long open time from the dry-in to the completed roof covering. On certain steep-slope roof projects, underlayment can sometimes face such exposure for up to 60 days. For these roofing projects, underlayment must be able to maintain its reliability; Summit 60 meets these demands.

Roofing crews will appreciate that Summit 60 has a textured wrinkle-free top surface fabric and a slip-resistant polymer coating applied to its bottom surface, for safer walkability during installation. This slip-resistant polymer provides improved grip for reduced slippage between the underlayment and the roof sheathing.

Installation is easier because Summit 60 is manufactured with pre-printed lay lines. This water-resistant underlayment is packaged in 10 square rolls, each weighing less than 30 pounds. It provides more coverage per roll than traditional felt.

Summit 60 Synthetic Underlayment can be mechanically fastened to many different types of substrate, making it a solid underlayment choice for both new and re-roofing applications. This excellent synthetic product can be used with asphalt shingles, clay and concrete tiles, slate, and wood shakes, or any other code-approved steep slope roof covering.

Summit 60 underlayment has earned ASTM D6757, the inorganic shingle underlayment rating standard. Its performance exceeds ASTM D226 Type I and Type II, the standard specification for asphalt saturated felt and it is UL Classified as demonstrating conformance to critical fire testing requirements for a prepared roofing accessory. It also received FL 16226, the Florida Building Code approval.

Designed to enhance the life of a roof, Summit 60 qualifies as an Atlas Signature Select Roofing System component. Atlas Signature Select Roofing Systems are offered at three system levels allowing contractors to target all market segments.

Underlayment Prevents Ice Dams

Atlas Roofing has released its WeatherMaster Granular SE underlayment, which can help prevent ice dams from forming.

Atlas Roofing has released its WeatherMaster Granular SE underlayment, which can help prevent ice dams from forming.

Atlas Roofing has released its WeatherMaster Granular SE underlayment, which can help prevent ice dams from forming. The peel-and-stick underlayment is designed for maximum ice and water protection under any roofing shingles, including asphalt, tile, wood shake, slate and metal. It helps secure the entire deck of a properly ventilated roof, especially in sections where water collects or drainage is slow, as well as vulnerable areas, including flashings, valleys, eaves, hips, ridges, rakes, dormers and skylights. The 55-mil-thick product’s backing seals directly to the roof deck and is reinforced with a fiberglass mat. It is cold-applied and no special adhesives, heat or equipment are necessary.

Membrane Is Factory Laminated to Cover Board

SOPREMA Inc. has developed SOPRASMART Laminated Boards, which combine SOPRALENE SBS-modified bitumen membrane and cover board into one installation layer, resulting in application consistency and complete adhesion.

SOPREMA Inc. has developed SOPRASMART Laminated Boards, which combine SOPRALENE SBS-modified bitumen membrane and cover board into one installation layer, resulting in application consistency and complete adhesion.

SOPREMA Inc. has developed SOPRASMART Laminated Boards, which combine SOPRALENE SBS-modified bitumen membrane and cover board into one installation layer, resulting in application consistency and complete adhesion. SOPRASMART is manufactured in a controlled setting, utilizing heat-welding equipment to laminate the SBS-modified bitumen coating of the base ply to the desired cover board. This eliminates the risk of delamination or wrinkling, and the sealed overlap protects the assembly from open flame intrusion when torch welding. SOPRASMART is available in a variety of cover-board options, including SOPRABOARD, high-density polyisocyanurate foam board, gypsum panels and high-density rock wool. It can be mechanically fastened or adhered using the DUOTACK adhesive.

Product Series Allows Roofs to Be Customized

Johns Manville has debuted the DynaFast product series, developed from its first-generation ASTM D6164 DynaLastic platforms.

Johns Manville has debuted the DynaFast product series, developed from its first-generation ASTM D6164 DynaLastic platforms.


Johns Manville has debuted the DynaFast product series, developed from its first-generation ASTM D6164 DynaLastic platforms. DynaFast SBS modified bitumen membranes are designed to be mechanically fastened. Together, DynaFast 180 S, DynaFast 180 HW and the DynaFast250 HW provide a vast assortment of options to customize any commercial roofing job. The system requires fewer fasteners for the same wind-uplift rating as traditional system fastening and gives you the choice of fasteners. DynaFast may be used in high and low wind zones. There’s an application for every job, including hot, cold and heat-weld applications. Roll lengths of 1 square or 1 1/2 square with varied thicknesses mean faster installation.

Self-adhered Underlayment Reduces Installation Time and Costs

Firestone Building Products Co. introduced its CLAD-GARD SA-FR with CoreGard Technology.

Firestone Building Products Co. introduced its CLAD-GARD SA-FR with CoreGard Technology.

Firestone Building Products Co. LLC, a manufacturer and supplier of a comprehensive “Roots to Rooftops” product portfolio, introduced its CLAD-GARD SA-FR with CoreGard Technology. The product is a self-adhered, waterproof, UL Class A underlayment and allows for substantial labor and materials savings. It has been strategically engineered to not only protect metal roofing systems from fire, but streamline the installation process.

UL Class A metal roofs protect rooftops, buildings and occupants from the spread of fire, which is key to safeguarding surrounding structures and communities. By offering the fire protection of UL Class A roofing materials in an underlayment, CoreGard Technology reduces installation time, labor costs and the overall number of materials for commercial roofing projects.

To achieve the same fire standard without CLAD-GARD SA-FR with CoreGard Technology, contractors would need to install a separate product, entirely, for their metal roofing systems. Up to six layers of total materials and installation stages would be necessary to accomplish this feat, which is accomplished in just four layers using CLAD-GARD SA-FR underlayment on a metal roofing system.

CLAD-GARD SA-FR with CoreGard Technology is safer, overall, for installers due to its skid-resistant top film. It is also ASTM 1970 approved and self-seals around nails or metal roofing fasteners. In addition, it provides a 120-day exposure. Primer is not required in temperatures of 40 F or higher, making the process a quick and easy one.

CLAD-GARD SA-FR with CoreGard Technology is covered by the Firestone Building Products Platinum Warranty for up to 30 years.

More Colors Available for 80-mil Membranes

Duro-Last Inc. is pleased to make Duro-Tuff and Duro-Fleece colors available for 80-mil membranes.

Duro-Last Inc. is pleased to make Duro-Tuff and Duro-Fleece colors available for 80-mil membranes.


As part of its commitment to serving its customers, Duro-Last Inc. is pleased to make Duro-Tuff and Duro-Fleece colors available in 80 mil. Colors available include blue, charcoal, copper, dark green, light gray, light tan, patina and white.