Greenline Tape by Royston
Description
Royston Greenline is a 35 mil, cold applied butyl based coating designed to provide protection against corrosion and electrolysis on below grade metal substrates. With a strong, flexible film backing Royston Greenline provides a protective coating with high adhesion and durability that conforms well to irregular shapes.
Royston Greenline “Regular” is produced with an extended adhesive edge on one side. This unique design allows for superior layer to layer bonding when applied spirally to a pipe. Royston Greenline “Special” does not have the extended adhesive edge. Royston Greenline requires the use of a primer before application.
Recommended Use
The strong, flexible backing makes it a good coating for hand and machine wrapping. It is an appropriate for coating and reconditioning small to moderate diameter pipes, bends, tees and metal structures, as a single component coating below grade.
Substrate Compatibility
Steel, Stainless Steel, Ductile Iron, other meals, FBE, PE
Surface Preparation
SSPC SP-2 Hand Tool Cleaning, SSPC SP-3 Power Tool Cleaning or SSPC SP-6/NACE No. 3 Commercial Blast Cleaning
Primer
Royston Greenline requires a primer to allow for permanent adhesion. A 4 mil WFT of Royston Roybond 747 or Roybond 747 Aerosol should be applied and allowed to dry prior to application of the Greenline. When use of a primer is not preferred or allowed, TR Green should be considered.
Reference
Royston Greenline meets all of the performance criteria listed in the most recent revisions of: NACE SP0109 (Cold-Applied Laminate Polymeric Tapes) ANSI/AWWA C209 (Type II)
Safety
Refer to Material Safety Data Sheet: MSDS-GREENLINE
Application
Refer to Application Guidelines: AG-COLD-APPLIED-BUTYL-TAPE
Technical Data
| Property | US Customary | Metric | Test Method |
| Total Thickness | 35 mils | 0.89 mm | ASTM D1000 |
| Backing Thickness | 6 mils | 0.15 mm | ASTM D1000 |
| Adhesive Thickness | 29 mils | 0.74 mm | ASTM D1000 |
| Cathodic Disbondment, 30 days | <0.3 in² | <5 mm radial | ASTM G8 |
| Adhesion to Primed Steel | 10 lbf/in | 1.75 N/mm | ASTM D1000 |
| Tensile Strength | 14 lbf/in | 2.45 N/mm | ASTM D1000 |
| Elongation | 800% | 800% | ASTM D1000 |
| Dielectric Strength | Exceeds 12 kV | Exceeds 12 kV | ASTM D149 |
| Holiday Detection Setting | 7400 V | 7400 V | NACE RP0274 |
| Impact Resistance | 20 in lb (double wrap) | 2.3 J (double wrap) | ASTM G14 |
| Water Vapor Transmission Rate @100°F (38°C) | <0.05 g/(24h*100 in²) | <0.20 g/(h*m2) | ASTM E96 Procedure B |
| Water Absorption | <0.2% | <0.2% | ASTM D570 |
| Leachable Chlorides | None | None | |
| Service Temperature Range | -40°F to +165°F | -40°C to +74°C |
Ordering Information
| Roll Size | Rolls Per Case |
| 2” x 50’ | 24 |
| 4” x 50’ | 12 |
| 6” x 50’ | 8 |
| 12” x 50’ | 4 |
Case Packaging: 2.0 SQ (200 ft2) per case Case
Weight: 60 lbs
