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Technical Bulletins

The manufacturing of building products never stands still. New developments in the industry from Malarkey Roofing Products®, governing bodies, industry associations, and testing and compliance organizations occur with regularity. Malarkey publishes this news in the form of Technical Bulletins to alert the general public, our customers, sales reps, and other interested parties. See below for our technical bulletins. For further information, contact the Technical Services Department at (800) 545-1191.

Shingle Racking Installation

[November 2019] Malarkey shingle installation instructions in our Specifications Manual state: “Straight up application of shingles, or racking, is not recommended.” Racking is an installation method roofers use to apply shingles in a straight up, vertical fashion rather than using the diagonal or stairstep approach described in Malarkey instructions.

Complete Set of OmniSeal™ Cap Sheets Now Rate UL 2218A Class 4 Impact Resistant

[September 2019] Results of recent testing show Malarkey® OmniSeal™ Self-Adhering Roofing Systems with 430 OmniSeal™ Cap and 440 OmniSeal™ Poly Cap meet UL 2218A Impact Resistant standards, joining 435 OmniSeal™ Cap Plus with the highest impact rating possible, Class 4.

Malarkey's Sustainability Practices Support Applicants to a Washington State Community Development Program

[September 2019] The Evergreen Sustainable Development Standard (ESDS) is a program created by the State of Washington to set building performance standards for affordable housing projects or programs seeking funds from the state’s Housing Trust Fund. Malarkey’s sustainability practices can support program applicants best in Section 6 of the ESDS.

Installation of Self-Adhering Membranes in Hot Weather

[July 2019] Elevated temperatures can affect the ability to remove the protective release film from a self-adhering (SA) membrane’s underside adhesive. The higher the radiant temperature of the roll, the more aggressive the adhesive becomes, and this can make the release film more difficult to remove. Recognizing this and taking precautions, SA’s can be installed despite the conditions.

Instalación de Membranas Autoadhesivas en Climas Cálidos (Español)

[Julio de 2019] Las temperaturas elevadas pueden afectar la capacidad para retirar la película separadora, protectora del adhesivo, de la parte posterior de una membrana autoadhesiva (SA). Cuanto mayor es la temperatura radiante del rollo, más agresivo se vuelve el adhesivo, y esto puede hacer que la película separadora sea más difícil de retirar. Si se reconoce el problema y se toman las precauciones debidas, las SA pueden ser instaladas a pesar de estas condiciones adversas.

Draining of One Roof Onto Another

[June 2019] How effectively a steep slope, asphalt shingle roof sheds rainwater is primarily a matter of roof slope and effective use of flashing, including downspouts and gutters. As part of this system, Malarkey recommends against the drainage of one roof directly onto another, especially because the lower roof often has less slope than the upper.

Installation of all Asphalt Shingles in Hot Weather

[June 2019] Asphalt roofing shingles are used in a wide range of temperatures with great success. Asphalt’s behavior changes with temperature and exposure to radiant energy from the sun. In hot weather, shingles become more pliable, but with a few tips, can be easily installed despite the conditions.

Instalación de Tejas Asfálticas en Clima Cálido (Español)

[Junio de 2019] Las tejas de techumbre asfálticas se utilizan con gran éxito en una amplia gama de temperaturas. El comportamiento del asfalto cambia con la temperatura y con la exposición a la energía radiante del sol. El clima cálido hace las tejas más flexibles, pero con un poco de asesoramiento pueden ser instaladas a pesar de las condiciónes climáticas.

Updated Installation Guidelines for Steep Slope NDL-Warranties Projects

[February 2019] Attn: Malarkey Sales Reps and Commercial Approved Applicators
Recently, Malarkey updated its Additional Installation Requirements for Commercial Approved Applicators Relative to Steep Slope NDL Shingle-Warrantied Projects (see attached). Some of the changes are new and some seek to clarify conditions stated before. Please read carefully and familiarize yourself with all requirements.

Malarkey Roofing Products® Highlander® NEX™ to Feature New 3M™ Smog-reducing Granules

[October 2018] Malarkey Roofing Products®, the premier North American building materials manufacturer, in collaboration with 3M, is pleased to announce the inclusion of 3M™ Smog-reducing granules to the Highlander® NEX™ laminated architectural roofing shingle line.

Malarkey Awarded GreenCircle Certification for Recycled Content

[October 2018] With an ongoing focus on sustainability, Malarkey Roofing Products® is being recognized again for its achievements with GreenCircle Certification, this time for Recycled Content.

Code-Compliant Starter Shingles

[August 2018] International Building Code and International Residential Code state shingles must comply with ASTM D3462, so how wide do starter shingles need to be to comply? The simple answer is 2" (51 mm) wider than the exposed portion of the shingle.

Malarkey Announces Updated Specifications Manual Now Online

[May 2018] Whenever the need arises, Malarkey updates it technical documentation online, and that includes our Specifications Manual for BUR, Modified, & Shingle Roofing Systems. The “Spec Book” is a comprehensive resource, covering almost every aspect of Malarkey low and steep slope roofing, including general information, specifications, details & figures, installation instructions, and warranties.

Installation Guidelines for Application of Asphalt Shingles in Cold Weather (<40° F [4°C])

[January 2018] Safety, storage and handling, installation, and more.

Pautas de Instalación para la Aplicación de Tejas Asfálticas en Clima Frío (<40° F [4°C]) (Español)

[Enero de 2018] Seguridad, almacenamiento y manejo, instalación y más.

Why Do Malarkey Products Include a Warning Relative to California Proposition 65?

[October 2017] In 1986, California voters adopted a measure called the “Safe Drinking Water and Toxic Enforcement Act,” [...requiring] warnings so people could choose to avoid areas or consumer products with chemicals known to cause cancer or reproductive harm. All Malarkey products come with a “Safety Data Sheet” that lists the hazardous chemicals that comprise them, and warnings are included where necessary even though they may exist in extremely small amounts. Potential hazards associated with these chemicals are rare because of the physical nature and “hardened state” of the roofing products in normal use.

Wood Board Decks as a Substrate for Steep Slope Roofing

[October 2017] The wood materials constituting a roof deck and their condition at the time is critical to the installation of roofing materials, their appearance afterward, and the longevity of the system. This is especially true of older homes with aging wood board decking and varying gaps between them. Wood board decks are an acceptable substrate under Malarkey shingles, but failure to correct deficit conditions (gaps ¼" and greater, warped, split, cracked, deteriorated, or rotted boards) can result in damage to the roof covering and may void your warranty should a claim be filed.

Roof Assemblies Utilizing Radiant Barriers

[August 2017] There are various kinds of radiant barriers, usually sheets of aluminum foil or thin sheets of material with foil laminated to it. Their purpose in a roofing system is to reflect radiant solar energy penetrating the roof and redirect it back out before it can raise temperatures within the house. Installed correctly, radiant barriers’ intent is to keep attics cooler in hot weather.

Storage and Handling of Asphalt Shingles

[April 2017] The storage and handling of asphalt shingles prior to installation may affect ease of application and long-term shingle performance. Double-stacking pallets can indent, deform, or stain the shingles over time, particularly in warm weather or when shingles are exposed to direct sunlight. All inventory should be systematically rotated so older material stored the longest will be the first moved out (first in, first out, or simply, FIFO). 

Use of Roof Water Runoff

[April 2017] Homeowners may want to use their roof water runoff for various domestic or household purposes. Asphalt shingles, including those containing algae-resistant copper granules, may be considered safe in terms of groundwater and leachate contamination (State of Washington Research Study – Roofing Materials Assessment1).

Vista™ AR and Legacy® XL Join Malarkey's Lineup of UL2218 Impact Resistant Shingles

[December 2016] Results of recent testing have shown two new laminated shingle offerings for Malarkey Roofing Products® meet UL 2218 Impact Resistant standards, Class 4 for Legacy® XL and Class 3 for Vista™ AR.

Fastening Shingles Over Open Overhangs

[August 2016] Roof overhangs at the eave and rake edges of a house provide shade and help keep rain-water off the siding, windows, and doors. When these overhangs are open (without soffits), exposing the underside of the roof deck, the following is our recommendation for fastening shingles so nail ends will not protrude through the decking and be visually displeasing.

Installation of Malarkey Roofing Products Shingles Over Unvented Roof Assemblies

[August 2016] Malarkey Roofing Products installation guidelines state:
“To prevent harmful condensation or heat buildup, air must circulate freely under the roof deck. Install roof vents at ridges and eaves. Building codes require one square foot of free ventilation to each 150 ft2 (1 m2/150 m2) of attic area or one square foot/300 ft2 (1 m2/300 m2) if 50% ventilation is provided near the ridge. All roof structures must have thorough ventilation to prevent entrapment of moisture-laden air behind roof sheathing. Ventilation provisions must meet or exceed current FHA or HUD requirements and adopted building codes.”

Results of Latest Underwriters Laboratories Impact Resistance Testing

[February 2016] Results of recent testing show Malarkey Roofing Products® OmniSeal™ Roofing Systems with OmniSeal™ Cap Plus meet UL 2218 Class 4 Impact Resistant standards, the highest rating possible.

Windsor® Designer Shingle Earns FBC Approval

[October 2015] On October 16, 2015, Malarkey received confirmation our Windsor® designer shingle product application to the Florida Building Code Information System, FL 14809-R3, was set to a status of Approved. Our Florida Certificate of Product Approval number is FL14809.

Warranty Announcement: New “Shingle and Accessory Warranty”

[August 11, 2015] Malarkey announces a new “Shingle and Accessory Warranty to replace the old “Shingle Warranty.”

Latest CRRC Listing of Malarkey Products

[August 4, 2015] The Cool Roof Rating Council (CRRC) has recently updated its listing of Malarkey products showing results of testing for Solar Reflectance and Thermal Emittance, plus each product’s overall Solar Reflectance Index ranking.

New ICC‐ES Evaluation Report

[March 25, 2015] Malarkey recently received our new, updated ICC‐ES Evaluation Report (ESR‐3150) which includes the additions of Windsor® shingles and all Dura‐Seal™, EZ‐Ridge™, and RidgeFlex™ (formerly, Hip & Ridge Strips) products. Existing products: The Alaskan®, all Highlander®, Northwest‐XL™, and Legacy® products, Ecoasis™ Sol (formerly, Ecoasis™) and Ecoasis™ Premium were retained.

UL 2218 Class 4 Impact Resistant Hip and Ridge Shingles

[March 18, 2015] Results of recent testing have shown Malarkey Roofing Products® 10" (225) and 12" (227) Hip & Ridge Strips meet the UL 2218 Class 4 Impact Resistant standard, the highest rating possible.