| Vacuum Panels |
| Sorel Controllers |
| Cylinders |
| Pumpstations |
| Roof Bolts |
| Insulation |
| Solar facts |
| Solar Efficiency |
| We've written the book on Solar |
| Peak Oil |
| History |
| Solar Radiation |
| Energy & Power |
| Plumbing Diagrams |
| Types of Panels |
| Installation |
| Solar Cylinders |
| Controllers |
| Detailed Design
Pipe Sizing Pipe Expansion Expansion Vessels Pump Calcs Frost Protection |
| Heating Integration |
| System Optimisation |
| LED lighting |
| Wind |
| Heat Recovery |
| Air Source Heat Pump |
| Ground Source Heat Pump |
| Underfloor heating |
| Building Heat Management |
| Gallery |
| Map |
| Allied Tiles |
Solar Bolts
The Stainless Steel (A2 Grade) bolts speed up both solar panel installation times and provide a better seal to the roof tile. The seal is designed to adjust to both flat and curved tile profiles allowing the same bolt to be used almost universally. The bolt is supplied with Nylok nuts and stainless washers and the bolt itself is zinced to prevent galling (cold welding).
Adjusted for Irish Roofs
The bolts sizes have been lenghtened to adjust for Irish Roof Profiles. The 60mm threaded bar can cope with Spanish Roll type tiles.
Sizing the Bolts
The most popular sizes are;
- 8.0mm dia. x 130mm wood / 60mm long 8mm dia. threaded bar. Code:JA3-SB-8.0x130/M8x60
- 8.0mm dia. x 150mm wood / 60mm long 8mm dia. Threaded bar. Code:JA3-SB-8.0x150/M8x60
- Other sizes POA
The 8.0mm screws are normally used with both vacuum tube and flat plate panels, for heavier flat plate panels, a 10mm threaded bar fixing can also be ordered.
Installation
The screw is attached at the highest point in the tile profile, so that rain will have a natural tendency to flow away from the seal. Do not mount the screw in the tile "valley" as this will block rain water flowing down the roof.
A 8.0 mm hole is drilled through the roof tile. Because the highest point in the tile profile will only occasionally match up with a rafter below, a noggin can be attached securely between adjacent rafters in the attic to provide an anchor point for the screw. We recommend (& SEI insist) that the solar bolt is screwed into the wood/rafter a depth of at least 2 inches or 50mm. A batton with a typical depth of 25mm is therefore not suitable.
|
Disclaimer, note that some house particularly wood frame houses use heavier battons and therefore, the spacing under the tile can change. It is the installers responsibility to ensure that sufficient penetration and the rafter is in good enough condition to give the required strength. Flat plate type panels can have very high wind loading, some manufacturers recommend 200kg of fixing strenght for each m² of panel. It is important that manufacturers recommendations are followed and there is sufficient roof and bolt strenght. |