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Johns Manville APP Base 2.0 SQ Base or Ply Sheet, 39.375 in. x 65 ft. 7 in. Roll
Regular price $151.00Orders start at $399 — combine any items to reach the minimum. Learn more
Johns Manville APP Base 2.0 SQ Base or Ply Sheet, 39.375 in. x 65 ft. 7 in. Roll
JM APP Base is an APP (atactic polypropylene) polymer-modified asphalt sheet used as a base or ply sheet in APP multi-ply roofing systems, meeting ASTM D 6509. This listing is one 39.375 in. x 65 ft. 7 in. roll covering about 2 squares. Its fiber glass mat and mineral parting agent surfacing allow installation with cold adhesive or heat welding.
Key Features:
- APP-modified asphalt: The APP polymer and asphalt blend delivers an extremely durable sheet with excellent weathering, flexibility, and dimensional stability.
- Fiber glass reinforcement: The fiber glass mat offers high tensile strength and dimensional stability and withstands differential movement.
- No thermal memory: With no thermal memory, less time is needed to relax the sheet for quick, easy installation.
- Mineral surfacing: Fine mineral parting agent on both sides enables application with cold adhesive or heat welding.
- ASTM compliant: Meets the requirements of ASTM D 6509.
- Two-square roll: Each 39.375 in. x 65 ft. 7 in. roll covers approximately 2 squares in multi-ply assemblies.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Sell unit | 1 roll, 39.375 in. x 65 ft. 7 in. |
| Product line | JM APP Base |
| Available sizes | 39.375 in. x 65 ft. 7 in. roll (approx. 2 SQ) |
| Material | APP polymer-modified asphalt with fiber glass reinforcement mat |
| Dimensions | 39.375 in. x 65 ft. 7 in. |
| Coverage per unit | Approx. 2 squares (200 sq. ft.) per roll before laps |
| Surfacing | Fine mineral parting agent on both sides |
| Approvals | Meets ASTM D 6509 |
| Application methods | Cold adhesive or heat welding |
| Intended use | Base or ply sheet in APP multi-ply roofing systems |
Coverage & How Much You Need:
One roll measures 39.375 in. x 65 ft. 7 in., about 2 squares (200 sq. ft.) before side and end laps. Divide roof area by 2 squares and add your lap allowance to size the order.
Fit and Compatibility:
Intended as a base or ply sheet within JM APP multi-ply roofing systems; cap sheets, adhesives, and flashing products are ordered separately. Apply with cold adhesive or heat-welding techniques per system specifications.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One roll of JM APP Base, 39.375 in. x 65 ft. 7 in., approximately 2 squares.
Q: How much does one roll cover?
A: About 2 squares (200 sq. ft.) before laps; deduct lap area for net coverage.
Q: How is it installed?
A: By cold adhesive or heat welding; the mineral parting agent on both sides supports both methods.
Q: What is the reinforcement?
A: A fiber glass mat that provides dimensional stability, tensile strength, and resistance to differential movement.
Q: What standard does it meet?
A: It meets the requirements of ASTM D 6509.
Q: Can it be used as a ply sheet?
A: Yes, it is designed for use as either a base sheet or a ply sheet in APP multi-ply systems.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
The fiber glass mat's lack of thermal memory lets the sheet relax quickly, so unroll and let it settle before adhering to speed production. Confirm lap direction and side laps with the system spec, and keep rolls stored flat and protected from punctures before installation.
Use heat-resistant gloves and proper torch or hot-air equipment precautions when heat welding modified bitumen sheets.
Order the JM APP Base 2.0 SQ roll for your next APP multi-ply base or ply sheet application.
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