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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.

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.

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.