Greenline Tape by Royston

Provides a Protective Coating with High Adhesion & Durability. Conforms to Irregular Shapes.


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 


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. 


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) 


Refer to Material Safety Data Sheet: MSDS-GREENLINE


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