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Johns Manville DynaClad SBS Aluminum Surfaced Cap or Flashing Sheet, Silver, 39-3/8 in. x 32 ft. 10 in.
Regular price $197.00Orders start at $399 — combine any items to reach the minimum. Learn more
Johns Manville DynaClad SBS Aluminum Surfaced Cap or Flashing Sheet, Silver, 39-3/8 in. x 32 ft. 10 in.
Johns Manville DynaClad is a fiber glass-reinforced, aluminum foil-surfaced cap or flashing sheet for multi-ply roofing systems. The roll is 39-3/8 in. x 32 ft. 10 in. in a reflective silver finish, and the high-reflectivity surface reduces heat load on the roof membrane. Its SBS rubber and asphalt blend provides the flexibility needed for continual roof movement.
Key Features:
- Reflective aluminum surface: The aluminum foil surface provides high reflectivity, reducing heat load on the roof membrane and potentially lowering air conditioning energy costs.
- Cap or flashing use: Used as a fiber glass-reinforced cap or flashing sheet in a variety of multi-ply roofing systems.
- SBS flexibility: The SBS rubber and asphalt blend lends elasticity and flexibility, with elongation and recovery that accommodate expansion and contraction.
- Dimensional stability: The fiber glass reinforcement mat offers excellent dimensional stability and tensile strength and withstands differential movement.
- Easier installation: With no thermal memory in the mat, less time is needed to relax the sheet, allowing ease of installation.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Sell unit | 1 roll, 39-3/8 in. x 32 ft. 10 in. |
| Product line | DynaClad |
| Material | SBS rubber and asphalt blend with fiber glass reinforcement mat and aluminum foil surface |
| Color / finish | Silver (aluminum foil) |
| Available colors | 1 color: Silver |
| Dimensions | 39-3/8 in. x 32 ft. 10 in. per roll |
| Coverage per unit | Approximately 108 sq ft per roll before laps and waste |
| Intended use | Cap or flashing sheet in multi-ply (BUR and modified bitumen) roofing systems |
Coverage & How Much You Need:
Each 39-3/8 in. x 32 ft. 10 in. roll covers roughly 108 sq ft of nominal area. Deduct side and end laps per system specification and add a waste allowance when estimating rolls.
Fit and Compatibility:
Designed for use within Johns Manville multi-ply roofing systems as a cap or flashing sheet over compatible base and ply sheets such as DynaBase HW. Base sheets, adhesives and flashing accessories are sold separately; follow the JM system specification.
Frequently Asked Questions (FAQ):
Q: What is included with this order?
A: One roll of DynaClad SBS aluminum-surfaced cap or flashing sheet, 39-3/8 in. x 32 ft. 10 in., in silver.
Q: Why choose an aluminum-surfaced sheet?
A: The aluminum foil surface provides high reflectivity, reducing heat load on the membrane and potentially lowering air conditioning energy costs.
Q: How much area does a roll cover?
A: A roll covers about 108 sq ft nominal; subtract laps and waste for net coverage.
Q: Can it be used as flashing?
A: Yes, DynaClad is designed for use as a cap sheet or flashing sheet in multi-ply systems.
Q: What reinforces the sheet?
A: A fiber glass reinforcement mat provides dimensional stability and tensile strength.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
DynaClad is the cap sheet to pick when reflectivity matters, such as over occupied buildings or in hot climates where reducing membrane heat load is a goal. Its fiber glass mat relaxes quickly on the roof, which helps crews lay it flat faster than torch-grade mats with memory. Detail laps and terminations carefully, since reflective foil surfaces show seam irregularities more than granule sheets.
Follow the specified installation and hot-work safety procedures for modified bitumen application and use roof fall protection during installation.
Order Johns Manville DynaClad SBS aluminum-surfaced cap or flashing sheet to reflect heat on your multi-ply roof.
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