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Johns Manville BICOR S Premium APP Base or Ply Sheet, 39-3/8 in. x 32 ft 10 in. Roll
Regular price $200.50Orders start at $399 — combine any items to reach the minimum. Learn more
Johns Manville BICOR S Premium APP Base or Ply Sheet, 39-3/8 in. x 32 ft 10 in. Roll
JM BICOR S is a premium APP-modified bitumen base or ply sheet for APP multi-ply roofing systems. Each roll measures 39-3/8 in. x 32 ft 10 in., with a fiber glass/polyester reinforcement mat and fine mineral parting agent surfacing on both sides. It applies by cold adhesive or heat welding; sold per roll.
Key Features:
- Premium APP blend: Premium Atactic Polypropylene polymer and asphalt blend provides an extremely durable sheet with excellent weathering, flexibility and dimensional stability.
- Hybrid reinforcement: Fiber glass/polyester mat combines polyester tensile strength, toughness and puncture resistance with fiber glass dimensional stability and lay-flat handling.
- Dual-sided surfacing: Fine mineral parting agent on both sides of the sheet enables application with cold adhesive or heat welding techniques.
- Easy handling: Lay-flat characteristics and dimensional stability make for ease of handling and quick installations.
- Multi-ply base or ply: Functions as a premium base sheet or interply sheet within APP multi-ply membrane systems.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Sell unit | 1 roll, 39-3/8 in. x 32 ft 10 in. |
| Product line | Johns Manville BICOR S |
| Available sizes | 39-3/8" x 32' 10" roll |
| Dimensions | 39-3/8 in. x 32 ft 10 in. per roll |
| Material | APP (atactic polypropylene) polymer and asphalt modified bitumen with fiber glass/polyester reinforcement mat |
| Coverage per unit | Approx. 108 sq ft per roll before laps |
| Finish / texture | Fine mineral parting agent on both sides |
| Intended use | Premium base or ply sheet in APP multi-ply roofing systems |
| Application methods | Cold adhesive or heat welding |
| Assembly | Rolled sheet, applied in APP multi-ply system |
Coverage & How Much You Need:
One 39-3/8 in. x 32 ft 10 in. roll yields roughly 108 sq ft of sheet; subtract end and side laps to get installed coverage. Estimate rolls by dividing the field area by the net coverage after laps.
Fit and Compatibility:
Designed as the base or ply sheet in Johns Manville APP multi-ply roofing systems; compatible with cold adhesive or heat-welded application. Cap sheets, adhesives and other system components sold separately.
Frequently Asked Questions (FAQ):
Q: What is included with each roll?
A: One roll of BICOR S measuring 39-3/8 in. x 32 ft 10 in. with mineral parting agent surfacing on both sides.
Q: How is BICOR S applied?
A: The fine mineral parting agent surfacing enables application with cold adhesive or heat welding techniques.
Q: What role does it play in the roof system?
A: It serves as a premium base sheet or interply sheet within APP multi-ply roofing systems.
Q: How much does one roll cover?
A: Approximately 108 sq ft of sheet area; deduct laps for net installed coverage.
Q: What reinforcement does it use?
A: A fiber glass/polyester mat that combines polyester tensile strength and puncture resistance with fiber glass dimensional stability.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Use BICOR S as the base or interply sheet in APP multi-ply assemblies where toughness and dimensional stability matter, with a compatible JM APP cap sheet above. Its dual-sided mineral surfacing lets the crew choose cold adhesive in occupied or fume-sensitive settings and torch or heat welding elsewhere. Overlap per system specification and roll laps thoroughly for a watertight multi-ply membrane.
Heat-welding modified bitumen requires trained installers, fire watch precautions and appropriate rooftop fall protection.
Order Johns Manville BICOR S Premium APP Base or Ply Sheet for durable APP multi-ply roofing systems.
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