GENFLASH® PRIMERLESS PROVIDES A FAST, RELIABLE WATERPROOFING SOLUTION WITH NO PRIMER REQUIRED, DELIVERING STRONG ADHESION AND LONG-TERM PERFORMANCE ACROSS A WIDE RANGE OF SURFACES
GENFLASH® Primerless is a 40-mil thick composite flashing membrane featuring a custom clear, non-asphaltic butyl adhesive. Designed for ease of installation, this membrane eliminates the need for primer while providing excellent adhesion to a variety of substrates including concrete, masonry, wood, steel, gypsum, insulation, and ICF systems. Its flexible construction allows it to conform to irregular surfaces, while its self-sealing properties ensure a tight seal around fasteners.
FEATURES
- No Primer Required For Faster Installation
- 40-Mil Composite Membrane For Durability And Performance
- Non-Asphaltic Butyl Adhesive Will Not Drool At High Temperatures
- Self-Seals Around Nails And Screws
- Excellent Adhesion To Multiple Substrates
- UV Resistant Up To 120 Days
- Flexible Membrane Conforms To Irregular Surfaces
- VOC, HCFC, And CFC Free
USES
- Window And Door Flashing
- Thru-Wall Flashing Applications
- Air And Water Barrier Transitions
- Masonry And Concrete Wall Systems
- ICF (Insulated Concrete Form) Applications
- General Waterproofing And Detailing
SIZES / OPTIONS
-
Roll Length: 75'
-
Membrane Thickness: 40 Mil
-
Film Color: White
WIDTHS & PACKAGING
| Width |
Rolls Per Box |
Linear Feet Per Box |
| 4” |
9 |
675’ |
| 6” |
6 |
450’ |
| 9” |
4 |
300’ |
| 12” |
3 |
225’ |
| 16” |
2 |
150’ |
| 18” |
2 |
150’ |
| 24” |
1 |
75’ |
| 36” |
1 |
75’ |
INSTALLATION NOTE
GENFLASH® Primerless requires the use of termination bars to properly secure and terminate the membrane at edges and transitions.
SPECIFICATIONS
| Property |
Value |
| Membrane Type |
Composite |
| Adhesive |
Non-Asphaltic Butyl |
| Thickness |
40 Mil |
| Primer Required |
No |
| UV Exposure |
Up To 120 Days |
TECHNICAL DATA
| Mechanical |
Typical Values |
Unit |
Test Method |
| Elongation |
20 |
% |
ASTM D412 |
| Tensile Strength |
5230 |
psi |
ASTM D412 |
| Low Temperature Flexibility |
No Cracks |
— |
ASTM C765 |
| Water Vapor Transmission |
0.011 |
perms |
ASTM D751 |
| Water Absorption |
1.48 |
% |
ASTM E96 |
| Mullen Burst |
400 |
psi |
ASTM D751 |
RESOURCES
