Base and Ply Sheets

HPR® Glasbase

Rot-Proof Protection
Superior Performance Characteristics
Designed for Demanding Roofing Needs

HPR Glasbase Sheets are an asphalt-coated fiberglass base sheet frequently used as the initial underlayment in a Garland HPR built-up roof system. In addition, HPR Glasbase Sheets can also be used as the nailable base sheet on various roof decks or as the ply sheets in the cold-applied Weatherking® system.

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Product Specifications

Method	Description
Cold-Applied	HPR Glasbase Sheets can be used as the initial underlayment for any Garland HPR Roof System. Specifications for nailing to various decks are available. In addition, HPR Glasbase Sheets are used as the underlayment in Garland's cold-applied Weatherking system. NOTE: When using HPR Glasbase Sheets with the cold-applied Weatherking System, all rolls must be cut in 18 ft. (5.48 m) lengths and allowed to relax prior to application.

Method

Description

Cold-Applied

HPR Glasbase Sheets can be used as the initial underlayment for any Garland HPR Roof System. Specifications for nailing to various decks are available. In addition, HPR Glasbase Sheets are used as the underlayment in Garland's cold-applied Weatherking system. NOTE: When using HPR Glasbase Sheets with the cold-applied Weatherking System, all rolls must be cut in 18 ft. (5.48 m) lengths and allowed to relax prior to application.

Physical Property	Value
Tensile Strength	HPR Glasbase: MD 44 lbf./in. (7.7 kN/m) XD 44 lbf./in. (7.7 kN/m) HPR Premium Glasbase: MD 100 lbf./in. (17.5 kN/m) XD 80 lbf./in. (14.0 kN/m)

Type	Link
Data Sheets	HPR Glasbase Sheets Technical Data Sheet
SDS	FlexBase 80 & Other Rolled Goods Safety Data Sheet
SDS	Glass Rolled Goods Safety Data Sheet

Features

Designed for Today's Demanding Roofing Needs

Today, roofs are larger and flatter. The incidence of thermal shock damage has increased because of the popularity of lightweight metal decks, sophisticated heating and air conditioning systems, and increased insulation. As modern engineering practices have imposed greater demands upon roof system performance, the quality of conventional roofing paper has deteriorated. HPR Glasbase Sheets put an end to the "quality slide." They have the strength and flexibility to meet today's more demanding requirements.

Superior Performance Characteristics

HPR Glasbase Sheets meet and exceed the toughest tensile strength tests required by ASTM D 4601, Type II. HPR Premium Glasbase Sheets exceed the requirements of ASTM D 4601 by more than 50%. HPR Glasbase Sheets impart the strength and flexibility your roof requires to stand up to and overcome the elements.

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Base and Ply Sheets

HPR® Glasbase

Product Specifications

Technical Data

Application

Physical Properties

Documents

Features

Designed for Today's Demanding Roofing Needs

Inorganic, Rot-Proof Protection

Superior Performance Characteristics

Related Products

StressPly® Plus/Plus FR Mineral

StressBase® 80 Plus

Weatherking® / Plus WC Membrane Adhesive

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