Resources
Products
Single Ply Commercial Roofing
Bituminous Commercial Roofing
Built-Up Roofing (BUR) Adhesives and Cements
We pioneered built-up roofing systems in America more than 160 years ago. Our highly reliable waterproof membrane is field-fabricated with layers of bitumen, alternating with plies of reinforcing felts.
The redundant layers give roofs exceptional resistance to water and weather. As a result, we have long-lasting, durable and worry-free systems. Few roofing companies can claim to have created nearly one billion feet of BUR that are today under full guarantee.
Adhesives & Cements
1-Part PermaFlash
Use: 1-Part Permaflash is a unique, one-component, elastomeric, liquid applied flashing material, consisting of an asphalt/polyurethane resin. It is formulated for use with Johns Manville (JM) modbit membrane products.
Type: One-part, elastomeric, liquid-applied flashing material.
Color: Brown
Features: Cures to a durable, elastomeric film and forms exceptional bonds between the modified bitumen and a variety of penetrating materials. Single component solution with no mixing required that conforms easily to various geometries or irregular shapes. UV stable, high solids (80%), low odor.
Asphalt Primer
Meets the requirements of ASTM D 41, Type II
Use: Used to prepare substrates prior to the application of hot asphalt or cold adhesives in BUR, SBS and APP modified bitumen roofing systems. Do not use Asphalt Primer as a finish coat on roofs.
Type: One-part, specification grade, penetrating priming solution.
Substrates: Compatible with concrete; gypsum; masonry; block; brick; and metal surfaces.
Color: Black Features: Low VOC and sprayable.
Bestile Utility Cement
Use: To adhere both vertical and horizontal roof flashing surfaces. Useful for repairing leaks in metal, shingles, concrete, flashings, gutters, around chimneys, flues, soil pipes, drains, eaves, cornices and roof perimeters.
Type: One-part, low VOC, asphalt-based trowel-grade mastic.
Features: Maintains bond during varying temperatures and weather conditions, and bonds to dissimilar materials. Excellent Durability. Remains Flexible Over Time.
Color: Black
JM One-Step Foamable Adhesive
Use: JM One-Step Foamable Adhesive is a two-component polyurethane adhesive used for attaching insulation or cover boards to the roof deck or to other insulation boards.
Type: Two-part, cold application insulation adhesive.
Substrates: Compatible with the following insulations, cover boards, and substrates1 : polyisocyanurate; HD wood fiber; perlite; Invinsa® Roof Board; gypsum; concrete2
(Lightweight structural, poured-in-place structural, precast, and insulating); treated plywood (5/8" [1.58 cm] min. thickness); cementitious wood fiber plank; base sheets; gypsum; and some existing smooth-surfaced asphalt (per inspection).
1. Ensure that all insulation boards are 4' x 4' or smaller.
2. Drying time of 28 days required
Color: Part 1 - Tan, Part 2 - Colorless
Features: Solvent free. Set boards immediately into adhesive; reduces installation time and maximizes adhesive footprint. No hoses or pumps required. Always on ratio, eliminates guesswork.
JM Roofing System Urethane Adhesive - RSUA
Use: JM Roofing System Urethane Adhesive is a two-component polyurethane adhesive used for attaching fleece-backed single ply membranes to insulation boards or various deck types as well as insulation boards to the roof deck or to other insulation boards.
Type: Two-part, cold application insulation adhesive.
Substrates: Compatible with the following insulations, cover boards, and substrates1 : polyisocyanurate; HD wood fiber; perlite; Invinsa® Roof Board; gypsum; concrete2 (Lightweight structural, poured-in-place structural, precast, and insulating); treated plywood (5/8" [1.58 cm] min. thickness); cementitious wood fiber; gypsum; smooth or granulated BUR, APP or SBS.
1. Ensure that all insulation boards are 4' x 4' or smaller.
2. Ensure that the concrete is adequately dry for adhesion.
Color: Part 1 - Tan, Part 2 - Colorless
Features: Solvent free, and HCFC or CFC free. Universal adhesive for adhering fleece-backed membranes and insulation boards. Sets in minutes.
Installation Guides
Installation Instructions for JM Roofing Systems Urethane Adhesive (RSUA)
MBR Flashing Cement
Use: For use with JM BUR and SBS membrane products. It is part of the JM PermaFlash® Bituminous Flashing System for penetrations and other details. Ideal for areas where hot asphalt is prohibited, not desirable or not practical.
Type: Two-part, elastomeric, liquid-applied flashing material.
Color: Black
Features: Cures to a durable, elastomeric film and forms exceptional bonds between the modified bitumen and underlying substrate. Resists virtually all factors affecting base flashing performance while providing superior flexibility and durability. UV stable, high solids, low odor, VOC compliant.
MBR Utility Cement
Use: As a substitute for asphalt and MBR® Flashing Cement in JM modified bitumen flashing details, and can be used to adhere the JM modified bitumen flashing systems and built-up roofing felts to vertical surfaces, as a general purpose mastic on most built up roofing and modified bitumen flashing details, or to strip in the laps of modified bitumen base flashings.
Type: One-part, asphalt-based, trowel-grade mastic.
Color: Black
Features: Cold process – does not have to be heated. Cures to form a durable, elastomeric and watertight film. Ready for use as shipped.
