HomeMy WebLinkAbout07 26 00 Vapor RetardersTHE KENT
07 26 00-
THE KENT Issue Date 05.09.18 VAPOR RETARDERS
THE KENT
SECTION 07 26 00 - VAPOR RETARDERS
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section Includes:
1. Polyethylene vapor retarders.
2. Reinforced-polyethylene vapor retarders.
B. Related Requirements:
1. Section 03 30 00 "Cast-in-Place Concrete" for under-slab vapor retarders.
2. Section 07 21 00 "Thermal Insulation" for vapor retarders integral with insulation
products.
1.3 ACTION SUBMITTALS
A. Product Data: For each type of product.
1.4 INFORMATIONAL SUBMITTALS
A. Product Test Reports: For each product, for tests performed by a qualified testing agency.
PART 2 - PRODUCTS
2.1 POLYETHYLENE VAPOR RETARDERS
A. Polyethylene Vapor Retarders: ASTM D 4397, 6-mil- thick sheet, with maximum permeance
rating of 0.1 perm.
2.2 REINFORCED-POLYETHYLENE VAPOR RETARDERS
A. Reinforced-Polyethylene Vapor Retarders: Sheet with outer layers of polyethylene film
laminated to an inner reinforcing layer consisting of either nylon cord or polyester scrim and
weighing not less than 20 lb/1000 sq. ft., with maximum permeance rating of 0.1 perm.
1. Products: Subject to compliance with requirements, available products that may be
incorporated into the Work include, but are not limited to the following:
a. Fortifiber Building Systems Group; Moistop Ultra 10.
b. Grace Construction Products; W.R. Grace & Co., Conn.; Florprufe 120.
THE KENT
07 26 00-
THE KENT Issue Date 05.09.18 VAPOR RETARDERS
THE KENT
c. Insulations Solutions, Inc.; ViperVaporCheck II 10 – mil.
d. Raven Industries, Inc.; Vapor block 10.
e. Stego Industries, LLC; Stego Wrap 10 mil Class A.
2.3 ACCESSORIES
A. Vapor-Retarder Tape: Pressure-sensitive tape of type recommended by vapor-retarder
manufacturer for sealing joints and penetrations in vapor retarder.
B. Adhesive for Vapor Retarders: Product recommended by vapor-retarder manufacturer and has
demonstrated capability to bond vapor retarders securely to substrates indicated.
C. Vapor-Retarder Fasteners: Pancake-head, self-tapping steel drill screws; with fender washers.
PART 3 - EXECUTION
3.1 PREPARATION
A. Clean substrates of substances that are harmful to vapor retarders, including removing
projections capable of puncturing vapor retarders.
3.2 INSTALLATION OF VAPOR RETARDERS ON FRAMING
A. Place vapor retarders on side of construction indicated on Drawings.
B. Extend vapor retarders to extremities of areas to protect from vapor transmission. Secure vapor
retarders in place with adhesives, vapor retarder fasteners, or other anchorage system as
recommended by manufacturer. Extend vapor retarders to cover miscellaneous voids in
insulated substrates, including those filled with loose-fiber insulation.
C. Seal vertical joints in vapor retarders over framing by lapping no fewer than two studs and
sealing with vapor-retarder tape according to vapor-retarder manufacturer's written instructions.
Locate all joints over framing members or other solid substrates.
D. Seal joints caused by pipes, conduits, electrical boxes, and similar items penetrating vapor
retarders with vapor-retarder tape to create an airtight seal between penetrating objects and
vapor retarders.
E. Repair tears or punctures in vapor retarders immediately before concealment by other work.
Cover with vapor-retarder tape or another layer of vapor retarders.
3.3 PROTECTION
A. Protect vapor retarders from damage until concealed by permanent construction.
END OF SECTION 07 26 00