features
- Single taped product for ease of application
- Flexibility of joint position
- Excellent adhesion and quick stick abilities
- 2 weight options available: 102g and 125g
- 2 widths: 1000mm & 1500mm
- Complies with BS5534:2014
ideal for
- Warm non-ventilated roof structures
- Cold ventilated roof structures
guidance
Refer to the Harcon VPU installation guide for complete installation instructions.
Material
The vpu membrane has a 3 layer composite structure with the vapour permeable film bonded between two layers of non-woven polypropylene.
VPU Weight Options:
- 102gsm budget weight
- 125gsm standard weight
Harcon VPU Taping Requirements
Recent changes to BS 5534: 2014 (Code of practice for slating and tiling for pitched roofs and vertical cladding) relating to wind uplift requirements, now require some membranes to be taped in highly exposed locations. Refer to tables for the appropriate taping requirements for Harcon VPU range of membranes.
| Material Properties |
125gsm |
102gsm |
| Thickness (mm) |
0.50
|
0.40
|
| Mass per unit area (g.m-2) |
125 |
102 |
| Roll length (m) |
50
|
50
|
| Roll width (m) |
1/1.5
|
1
|
| Colour |
Blue |
Grey |
|
Tensile strength (N.50 mm-1)
Longitudinal
Transverse
|
285
165
|
250
140
|
|
Elongation (%)
Longitudinal
Transverse
|
70
90
|
60
70
|
|
Tear Resistance (N)
Longitudinal
Transverse
|
125
120
|
100
95
|
|
Watertightness
Unaged
Aged
|
W1
W1
|
W1
W1
|
| Water vapour transmission (Sd) (m) |
0.029 |
0.029 |
| Vapour resistance (MN.s.g-1) |
0.145
|
0.145 |
| Fire Properties (EN 11925-2 : 2002) |
Class D, d2 |
Class D, d2 |
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