 |
 |
Installation DetailsInstallation Details |
|
|
| Harcon VPU has been designed for simple installation with lap lines for the most common form of installation – partially supported on aaroof with aapitch of 15 - 34º. |
|
Fully Supported System
Lay Harcon VPU over the support with the bright blue side uppermost and secure it to the support or rafters using counter battens a minimum of 12mm thick with corrosion resistant staples or clout nails.The tile battens are fixed to the counter battens leaving a ventilation gap between the Harcon VPU and the tiles. |
|
Unsupported System
Harcon VPU is draped between the rafters as is the traditional method for roof tile underlays. |
|
| In both supported and unsupported systems overlaps should be installed to shed water down the slope. |
|
|
| MINIMUM OVERLAPS |
|
| Roof Pitch |
Horizontal lap - Partially Supported |
Horizontal lap - Fully Supported |
25mmVertical lap |
|
|
|
|
| 125º - 14º |
225mm |
150mm |
100mm |
| 15º - 34º |
150mm |
100mm |
100mm |
| 35º+ |
100mm |
75mm |
100mm |
|
