Product Data Sheet - Butyl Caps & Butyl Seam Tape

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1. PRODUCT NAME

Butyl Caps & Butyl Seam Tape
Metal roof fasteners & seam sealers

2. MANUFACTURER

NATIONAL COATINGS CORPORATION

1201 Calle Suerte Camarillo, CA 93012

Phone: 800-423-9557
FAX: 800-294-3866
www.nationalcoatings.com

3. PRODUCT DESCRIPTION

Butyl Caps are a unique but proven method of sealing fasteners on metal roofs. They are round disks consisting of a tenaciously adhering butyl rubber sealant topped with a reinforcing polyester surface.

Because of their ease of application, conformability, and effective water-tightness, Butyl Caps can replace the burdensome and expensive task of sealing metal roof fasteners with traditional mastics.

Butyl Seam Tape is a 4-inch wide,high tensile strength, polyester-reinforced, butyl rubber sealant tape for sealing edges and seams on metal roof panels.

Butyl Caps and Butyl Seam Tape should not be left exposed. They should be top-coated with AcryShield elastomeric roof coating.


BENEFITS:
  • Extremely Easy to Apply
  • Instant Waterproofing
  • Superior Adhesion
  • Long-Term Durability
  • Excellent Flexibility Over Wide Temperature Range

4. TECHNICAL DATA

See table below.

5. INSTALLATION

  • Butyl Caps may be applied by hand or Butyl Caps Sealing Tool.

  • For Butyl Seam Tape, first cut to the desired length.  Peel off plastic release liner and press into place removing all buckles and bubbles.

  • All surfaces must be clean, dry, and free of dirt, grease, oil, or other contaminants that would interfere with proper adhesion.

  • Apply at temperatures above 40ºF.

  • Apply only when weather conditions will permit drying before rain, dew or freezing temperatures.

  • For application details see specific Guide Specifications.

6. AVAILABILITY AND COST

Butyl Capsand Butyl Seam Tape may be purchased directly from National Coatings Corporation.  For information call 800-423-9557.

7. WARRANTY

Various warranties are available for Butyl Caps and/or Butyl Seam Tape when used as an integral part of AcryShield Roof Management Systems installed by approved applicators.

8. MAINTENANCE

Periodic maintenance of AcryShield Roof Management Systems containing Butyl Caps and/or Butyl Seam Tape ensures extended performance and reduces life cycle costs.

9. TECHNICAL SERVICES

Additional information, product brochures, and installation guide specifications are available.

10. FILING SERVICES

Additional product information is available from National Coatings Corporation.

TECHNICAL  DATA

Properties

Average Value

 

Butyl Caps

Butyl Seam Tape

Appearance

1 ½ inch diameter polyester disk with grey adhesive sealant.

Greyish-white fabric with gray adhesive/sealant.

Application

Peel disk from release liner on the roll. Apply to fastener and ensure that the edges are thoroughly bonded to the surface.

Cut desired length, peel off release liner, and press into place removing all buckles and bubbles.

Bonding Time

Immediate, water tight, aggressive grip, full bond in 24 hours.

Facing/Backing

Spun bond polyester fabric.

Adhesive Sealant

18 mils grey elastomeric modified butyl rubber.

Packaging

Rolls, containing 2500  1½ inch disks.

4 inch X 50 foot rolls, 12 rolls per case.

Temperatures:

 

- Application
- Operating Limits

35ºF to 110ºF
-20ºF to 200ºF

35ºF to 110ºF
-20ºF to 200ºF

Low Temp Flexibility

Passes, no cracking.

Tensile Strength

750 psi with 500% elongation (adhesive sealant).

Shelf Life

24 months (adhesive sealant).

Peel Strength

15 lbs. per linear inch.

15 lbs. per linear inch.

Water Resistance

Excellent--Surface must be dry before and during application.

These products are for industrial/commercial applications only. These suggestions and data are based on information we believe to be reliable. They are offered in good faith, but without guarantee, as conditions and methods of use are beyond our control.