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Carlisle SureMB 70 SA Self-Adhered SBS Base Ply Membrane, Sand Surface, Black, 39-3/8 in. x 61 ft Roll
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Carlisle SureMB 70 SA Self-Adhered SBS Base Ply Membrane, Sand Surface, Black, 39-3/8 in. x 61 ft Roll
Carlisle SureMB 70 SA Base Ply is a 70-mil, sand-surfaced, self-adhered SBS membrane on a fiberglass mat, supplied as one black 39-3/8 in. x 61 ft roll. The SBS-modified bitumen construction with poly release liner installs easily and a selvage edge ensures watertight seams. Compatible with Flexible FAST Adhesives for modified bitumen assemblies.
Key Features:
- Self-adhered: Self-adhered with a poly release liner for easy installation.
- 70-mil durability: 70-mil-thick reinforced membrane offers excellent durability in temporary roof applications.
- SBS modified: Fiberglass mat saturated and coated with premium bitumen and durable SBS elastomer.
- Sand surface: Smooth sand surface finish.
- Watertight seams: Selvage edge ensures watertight seams.
- FAST compatible: Compatible with Flexible FAST Adhesives.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Carlisle |
| Sell unit | 1 roll, 39-3/8 in. x 61 ft |
| Product line | SureMB 70 SA |
| Available colors | Black |
| Available sizes | 39-3/8 in. x 61 ft |
| Material | SBS-modified bitumen with fiberglass mat reinforcement |
| Thickness | 70 mil |
| Surface | Smooth sand surface |
| Type | Self-adhered (SA) base ply membrane |
| Dimensions | 39-3/8 in. x 61 ft per roll |
| Backing | Poly release liner |
| Seam detail | Selvage edge for watertight seams |
| Compatibility | Compatible with Flexible FAST Adhesives |
| Intended use | Base ply for SBS modified bitumen assemblies; excellent durability in temporary roof applications |
Coverage & How Much You Need:
Each 39-3/8 in. x 61 ft roll provides about 200 sq ft of nominal area before laps; the selvage edge is used to ensure watertight seams, so plan final coverage based on specified side and end laps.
Fit and Compatibility:
Intended as the base ply in Carlisle SBS modified bitumen roof assemblies and is compatible with Flexible FAST Adhesives. Cap ply membranes and adhesives are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one roll?
A: One black, sand-surfaced roll measuring 39-3/8 in. x 61 ft.
Q: How thick is the membrane?
A: It is a 70-mil reinforced membrane.
Q: Is torching required?
A: No. It is self-adhered with a poly release liner for easy installation.
Q: How is it installed in an assembly?
A: It is used as a base ply; the selvage edge ensures watertight seams, and it is compatible with Flexible FAST Adhesives.
Q: What does the roll cover?
A: Roughly 200 sq ft nominal before laps, so size the job on roll count plus specified overlap.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Use SureMB 70 SA as the base ply where a self-adhered SBS membrane is specified, especially on temporary roofs where its 70-mil reinforcement adds durability. Roll it out with the selvage edge laps set for watertight seams, and keep the surface clean before cap ply application. Order rolls by the square, allowing for overlap so you do not run short at edges and penetrations.
Membrane rolls are heavy and awkward; use proper lifting technique and a helper, and follow the product installation guide for substrate temperature and priming requirements.
Order Carlisle SureMB 70 SA Base Ply today for a durable self-adhered SBS base membrane.
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