Finestop RS
Finestop RS is a one-component fluid-applied vapor permeable air/water-resistive barrier. Waterproof and resilient, it may be spray-, roller-, or brush-applied directly to approved wall substrates. It provides excellent secondary moisture protection behind most wall claddings including EIFS, stucco (slip sheet required), brick, siding and metal panels.
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FEATURES | BENEFITS |
Can be used with most code-compliant claddings | One continuous air/water-resistive barrier for buildings with multiple claddings |
| Meets ASTM D 1970 nail sealability requirements with and without Sheathing Fabric | Self-sealing performance |
| One component, low VOC formulation | Easy to apply, meets VOC requirements in all 50 states |
| Approved for Finestone Wall Systems | Full system warranty with Finestone EIFS and stucco wall claddings |
| Water-based | Cleans up with water; solvents and citrus-based cleaners are not required |
| Tough, abrasion resistant | Rugged membrane resists damage after installation |
| Nonflammable as applied | Promotes workplace safety |
| 180 day outdoor exposure rating (30 days if used as part of an adhesively fastened wall system) | Flexible construction scheduling |
Uses
Finestop RS is used as a vapor permeable air/water-resistive barrier over the following exterior wall substrates:
- ASTM C1177 type sheathings, including DensGlass™ or DensElement™ exterior sheathing, eXP™ sheathing, GlasRoc® sheathing, Securock™ glass-mat sheathing, Weather Defense™ Platinum sheathing, GreenGlass® sheathing
- PermaBase™ brand cement board by National Gypsum (or other ASTM C1325 Type A Exterior approved cement boards)
- Untreated Exposure I or exterior plywood sheathing (grade C-D or better)
- Untreated Exposure I OSB
- Gypsum sheathing (ASTM C79/ASTM C1396)
- Poured concrete/unit masonry
Finestop RS should not be used for below grade applications or on surfaces subject to water immersion.
