Moistop ® Sealant
Performance standards you can trust Moistop Sealant is continually tested in accordance with AAMA and ASTM procedures. It provides an exterior perimeter sealing compound for windows and doors that is compatible with most commonly used building materials.
Limitations: Not recommended for unprimed masonry joints that will be subjected to continuous water immersion; joints that are contaminated with grease, wax, corrosion or cement laitance; horizontal joints in floor or decks where physical abuse is encountered; special architectural finishes without proper testing. Not compatible with solvent-based paints. Installation: Moistop Sealant should be applied when temperatures are between 40 °F and 112 °F. Do not apply to frost-bearing surfaces or when temperatures have been below freezing for more than 24 hours immediately prior to installation. Tooling techniques using solvents or soapy solutions are not recommended; sealant cannot be cleaned/tooled uncured with solvents (isopropyl alcohol is recommended). All surfaces must be evaluated for adhesion prior to product acceptance. Compatibility and Adhesion: It is expected that Moistop Sealant will adhere and perform in uncontaminated joints with most common construction substrates. Substrates include but are not limited to concrete, exterior gypsum, stucco, EIFS, aluminum, galvanized surfaces, glass, wood and polyvinyl chloride (PVC). Due to the vast numbers and types of surface coatings and treatments available, Henry recommends pretesting Moistop Sealant on the surface in question. Sealant compatibility testing is not required for Henry’s full line of flashing products and weather-resistive barriers. All surfaces should be clean and clear of any surface contamination. In the case of some exotic coatings, priming or other surface treatment may be necessary. Shelf Life: Moistop Sealant will exhibit a ten (10) month shelf life when stored at temperatures not exceeding 75 °F. “Use by” date is printed on each tube. Availability: Henry products are distributed nationwide. For product information and pricing, please call a Henry distributor near you. If you need assistance locating a participating distributor, please call our Customer Service Department at 1-800-773-4777. Precautions: IF THIS PRODUCT IS USED IN DIRECT CONTACT WITH ANY OTHER SEALANT OR ELASTOMER, A COMPATIBILITY TEST MUST BE CONDUCTED BY PURCHASER OR USER, PRIOR TO ACCEPTANCE. MOISTOP SEALANT AND LIQUID FLASHING IS NOT COMPATIBLE WITH OXIME CONTAINING SILICONE SEALANTS. The suitability of this product, for each intended use, must be determined by the purchaser prior to acceptance. Avoid skin contact. On contact, uncured sealant could cause irritation to the skin and eyes. In the case of eye contact, flush immediately with warm water for at least 15 minutes and call a physician. For skin contact, remove with a towel and wash the affected area with a citrus-based hand cleaner. If swallowed, do not induce vomiting; call a physician. This product is manufactured for industrial use only. Refer to Safety Data Sheet (SDS) on the company’s website at www.henry.com for further information. For medical emergency call Henry Technical Support at 800-773-4777. Henry Product Warranty Information: This product may be eligible for the 15-year Henry 1-2-3 Moisture Control System Warranty when used in conjunction with other products. See https://us.henry.com/warranty for details. We, the manufacturer, warrant only that this product is free of defects, since many factors which affect the results obtained from this product – such as weather, workmanship, equipment utilized, and prior condition of the substrate – are all beyond our control. We will replace at no charge any product proved to have a material defect within 12-months of purchase, provided it has been applied in accordance with our written directions for uses we recommend as suitable for this product. Proof of purchase must be provided. DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY: THIS LIMITED WARRANTY IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. NO ONE, INCLUDING THE MANUFACTURER, SHALL HAVE ANY LIABILITY OF ANY KIND BEYOND PRODUCT REPLACEMENT, INCLUDING FOR NEGLIGENCE OR FOR DIRECT, CONSEQUENTIAL, EXEMPLARY OR INCIDENTAL DAMAGES, RESULTING FROM ANY MISUSE, DEFECTS OR DELAYS CAUSED BY REPLACEMENT OR OTHERWISE. IF PURCHASER DOES NOT ACCEPT THESE TERMS, PURCHASER MAY RETURN WITHIN 30-DAYS OF PURCHASE ALL UNOPENED CONTAINERS OR PACKAGES OF PRODUCT PURCHASED FOR A FULL REFUND. RETENTION OF PRODUCT BEYOND 30-DAYS, OR USE OF PRODUCT SHALL CONSTITUTE ACCEPTANCE OF THESE TERMS, CONDITIONS, AND DISCLAIMERS. THIS LIMITED WARRANTY AND LIABILITY DISCLAIMER PROVIDES THE PURCHASER’S EXCLUSIVE REMEDY FOR ANYTHING RELATING TO THE PRODUCT. To the extent that any part of this LIMITED PRODUCT WARRANTY AND LIABILITY DISCLAIMER is determined unenforceable under the law of the place of purchase of the product, that part is severed and the remainder of these terms remain in full force and effect. To the extent permitted by law, the duration of any implied warranties is limited to the duration of Henry’s express warranty. This warranty language supersedes any language found elsewhere, including product labels, sell sheets and/or technical documents.
Physical/performance property
Typical value
Test method
Peel adhesion:
20 lb/in Pass
ASTM D412 ASTM D412 ASTM C794 AAMA 799
Tensile maximum:
200 psi (1.38 N/mm²)
Elongation:
450%
Max VOC:
9 g/l (.075 lbs/gal)
ASTM D3960
Hardness:
30 ±5
ASTM C661
Service temperature:
-40 °F to 180 °F (-40 °C to 82.2 °C) 40 °F to 110 °F (4.4 °C to 43.3 °C)
-
Application temperature:
-
Tack time:
<1 hour
ASTM C719 AAMA 714-15 1/4" (6.34 mm) diam. bead @ 77 °F (25 °C) 50% R.H. 1/4" (6.34 mm) diam. bead @ 77 °F (25 °C) 50% R.H.
Cure time:
24 hours
Movement capability
±25%
Liquid applied flashing:
Pass
*Moistop is continually tested in accordance with ASTM procedures. The values shown are typical values obtained in these tests.
Product characteristics
Composition
One component, moisture curing, non-sag, gun-grade elastomeric polymer for use as a sealant or liquid applied flashing.
Approximate coverage (Ln. Ft. per 10 oz.)
Sealant
Liquid applied flashing
25 mil
40 mil
30'
3/8" Bead
- 15' 10'
-
4" width 6" width
- -
10'
6'
Product approvals and certifications
ASTM C920 Type S, Grade NS, Class 25, Use-NT, Use-A, Use-M, Use-G, Use-O AAMA 808.3-92 (Exterior Perimeter Sealing Compound) AAMA 714-15
Featuring a range of compatible weather barriers, flashings and sealants, the Henry ® 1-2- 3 Moisture Control System makes it easier than ever to build with confidence. Henry and Moistop are registered trademarks of the Henry Company
Ask us today about other Henry ® solutions that help manage the flow of water, air, vapor and energy.
Building Envelope Systems ® Wall & Window | Roof | Foundation
csfhenry@henry.com | 1-800-773-4777 www.henry.com
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