Premium-grade waterproofing solution for Precast Concrete & Metal
Developed by H.B. Fuller using advanced polymer technology, Butyl Wrap was refined through extensive research and development to create a product that outperforms conventional waterproofing solutions while remaining cost-effective for large-scale projects. Now, with decades of proven field performance, this professional-grade solution provides peace of mind for contractors & engineers seeking an impermeable barrier that prevents moisture migration through joints, cracks, and other structural elements. Its robust 50-mil thickness combined with a laminated polyethylene backing ensures durability in demanding environments while maintaining the workability needed for precise installation around complex architectural details.
Key Features & Benefits
Permanent Flexibility
Superior Adhesion
Waterproof
Protects against water penetration which can otherwise lead to structural damage
Easy Application
Self-adhering technology eliminates the need for special equipment, reducing labor costs and installation time
Construction professionals trust MARMAC® Butyl Wrap (C877-Type 3) when failure is not an option. With decades of field-proven performance in critical infrastructure applications, this premium waterproofing solution delivers consistent results in the most demanding environments. Butyl Wrap is available in a variety of widths to fit the application at hand, and it meets or exceeds the ASTM C877, Type III standard for butyl-tapes.
Contact our technical support team today for specification assistance, installation guidance, or for purchase inquiries for your next construction project.
| BACKING | WIDTH | THICKNESS | LENGTH |
|---|---|---|---|
| HDPE | 6″ (150 mm) | 0.050″ | 100′ (30.5 m) |
| EPDM | 9″ (225 mm) | 0.030″ | 100′ (30.5 m) |
| HDPE | 12″ (300 mm) | 0.050″ | 50′ (15.25 m) |
| EPDM | 12″ (300 mm) | 0.030″ | 50′ (15.25 m) |
| HDPE | 14″ (355 mm) | 0.050″ | 50′ (15.25 m) |
MarMac Butyl Wrap meets all requirements of ASTM C877, Type III.
| VALUE | METHOD | |
|---|---|---|
| Color | Black | Visual |
| Base Polymer | Butyl | N/A |
| Brittleness Temperature | -50°F (-46°C) | ASTM D2137 |
| Service Temperature | -50-150°F (-45-65°C) | N/A |
Store material in original, unopened packaging at temperatures between 40-110°F (4-43°C). Shelf life is 12 months when stored as recommended.
Butyl Wrap is not intended for use in conditions where it may come into direct contact with petroleum distillates such as gasoline, oil, kerosene, or other chemical solvents. All bonding surfaces should be clean, dry, and free of dirt, dust, debris, oils, and other contaminants.
Do not stretch the sealant tape during application. Make sure to overlap the tape ends at least twice the tape width. Roll the tape to ensure good contact with the substrate.
When confronted with wet installation conditions or when temperatures are below 40°F (4°C), MarMac recommends the use of RB Adhesive Primer for increased adhesion.
AVAILABILITY
Roll widths: 6, 9, 12, 14″
Roll lengths: 50, 100′
Thickness: 0.05″, 0.03″
Backing: HDPE, EPDM
APPLICATIONS
Manhole Joints
Grade Ring Joints
Irrigation & Drainage
Box Culverts
Elliptical/Arch Pipe
Utility Vaults
Architectural Foundations
Stormwater Structures
Treatment Tanks
Wet Wells
Concrete Bridge Spans
Junction Boxes
