Curtainwall Insulation

Description
Curtainwall Insulation/CW 225 is a semirigid, fiber glass boardlike product, made in R-values from 4.3 to 17.4. Curtainwall Insulation/CW 225 is available plain or faced with an FRK (foil-reinforced-kraft) vapor retarder. The product is manufactured in thicknesses from 1" to 4".

Uses
Curtainwall Insulation/CW 225 is designed to provide superior thermal properties in glass, metal and masonry curtainwall spandrel systems. The semirigid, lightweight boards can be placed between or over framing members, and held in place with mechanical fasteners or other systems.

Design Considerations
Buildings utilizing curtainwall construction should be equipped with a sprinkler system to provide adequate fire protection.

The need for and placement of a vapor retarder in commercial construction depends on many factors. The architect or specifier should evaluate the requirements of each project.

Features & Benefits

Excellent Thermal Performance
With the range of R-values and thicknesses available, Curtainwall Insulation/CW 225 can meet most thermal specifications with ease.

Improves Acoustical Performance
Curtainwall Insulation/CW 225 also improves acoustical performance by increasing the Noise Reduction Coefficient (NRC) rating. A 2" thickness provides an NRC of up to 1.00.

Dimensional Stability
The dimensional stability of CW 225 assures long term in-place performance. It will not decay or slump within the wall cavity, and its inorganic fibers will not shrink or warp.

Size Availability
CW 225 is available in a standard size of 24" x 48". CW 225 can also be furnished precut in nonstandard lengths and widths to eliminate the need for job site fabrication and speed installation.

Easy Installation
Lightweight and resilient, Curtainwall Insulation/CW 225 is easy to handle and install. CW 225 is easily cut with a utility knife for convenient job site fabrication.

A wide range of thicknesses facilitates optimum material usage. CW 225, in standard size, is compression-packaged for improved shipping, storage and handling.

Installation

Curtainwall Insulation/CW 225 can be easily cut with a knife and fit neatly into irregularly shaped areas. Curtainwall Insulation/CW 225 can be applied using impaling pins, friction-fit between furring members, or installed with adhesives appropriate for lightweight board insulation.

When using adhesives, follow adhesive manufacturer’s recommendations for surface preparation and adhesive pattern.

When using impaling pins, follow pin manufacturer’s recommendations for surface preparation. Lengths should be selected to ensure tight fit. Protect pin tips where subject to contact. Pins should be located 3" to 8" from the edge(s) of the board. Follow curtainwall manufacturer’s instructions for clearance.

Maintaining the integrity of the vapor retarder is critical for effective moisture/humidity control. Repair any punctures or tears in the facing by taping with a pressure sensitive foil tape.

If joints are to be taped, all insulation facing edges should be sealed with a pressure-sensitive foil tape that is compatible with the foil facing. Follow the tape manufacturer’s application recommendations.

Product should be kept dry during shipping, storage and installation.

Applicable Standards

Curtainwall Insulation/CW 225 complies with ASTM C 612, Type 1A and 1B. Federal Specification HH-I-558B has been canceled and is replaced by ASTM C 612.

The thermal resistance values for Curtainwall Insulation/CW 225 were tested in accordance with ASTM C 518; R-value listed is for insulation only.

The surface burning characteristics of Curtainwall Insulation/CW 225 were derived from products tested in accordance with ASTM E 84. This standard is used solely to measure and describe properties of products in response to heat and flame under controlled laboratory conditions. These numerical ratings are not intended to reflect hazards presented by this or any other material under actual fire conditions. Values are reported to the nearest five rating.

The vapor retarder permeance of the FRK facing on Curtainwall Insulation/CW 225 was developed from tests conducted in accordance with ASTM E 96, desiccant method.

The noise reduction coefficients of Curtainwall Insulation/CW 225 were derived from tests conducted in accordance with ASTM C 423.