Johns Manville Releases 800 Series Spin-Glas® Insulation with New Poly-top Facing

DENVER–(BUSINESS WIRE)–Johns Manville, a Berkshire Hathaway company and leading building
products manufacturer, announced today the release of 800 Series
Spin-Glas® Ultra, a fiberglass insulation board with a new polypropylene
coated (poly-top) facing.

The insulation is designed with a facing that provides a similar
aesthetic to Johns Manville’s Micro-Lok® HP Ultra pipe insulation, which
also features a polypropylene coated facer. This polypropylene coating
allows both 800 Series Spin-Glas Ultra and Micro-Lok HP Ultra to be
wiped down for better cleanability.

Lance Bonin, Johns Manville’s Mechanical Portfolio Manager, said the
idea for this new facing began at one of Johns Manville’s Contractor
Advisory Councils.

“We regularly host events where we can get feedback from the contractors
who install our products,” Bonin said. “Over the last year, one thing we
heard repeatedly was that contractors want a poly-top facing for our
Spin-Glas board insulation that is similar to the poly-top facing we use
on our Micro-Lok® HP Ultra pipe insulation.”

The new facer is a scrim-reinforced, polypropylene-coated, metalized

Meredith Westerdale, Johns Manville’s Mechanical Product Manager,
explained that this new facing is unique from other mechanical
insulation facings. “Most facings used on mechanical insulation have a
kraft paper component, but the new facing we are using on our 800 Series
Spin-Glas Ultra board has no paper. We’ve found that for fiberglass
boards, this can improve their wrinkle-resistance,” she said.

800 Series Spin-Glas Ultra can be used on any ASJ specification as it
meets the requirements of a polymeric film type ASJ per the NIA
Glossary. Additionally, it meets the highest rating for low permeance
vapor retarders as a Type I classified material per ASTM 1136.

800 Series Spin-Glas Ultra will be available from Defiance, Ohio, in
late April. For more information about 800 Series Spin-Glas Ultra,
download the data
or the FAQs.

About Johns Manville

Johns Manville, a Berkshire Hathaway company (NYSE: BRK.A, BRK.B), is a
leading manufacturer and marketer of premium-quality products for
building insulation, mechanical insulation, commercial roofing and roof
insulation, as well as fibers and nonwovens for commercial, industrial
and residential applications. JM serves markets that include aerospace,
automotive and transportation, air handling, appliance, HVAC, pipe and
equipment, filtration, waterproofing, building, flooring, interiors and
wind energy. In business since 1858, the Denver-based company has annual
sales over $3 billion and holds leadership positions in all of the key
markets that it serves. Johns Manville employs 8,000 people and operates
42 manufacturing facilities in North America, Europe and China.
Additional information can be found at


Johns Manville
Meredith Westerdale
Product Manager

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