Rail mounting systems
There are numerous systems available for mounting rails to the roof, below are just a few examples of systems we have used.
Stainless steel roof hooks, used on concrete/clay roof tiles, the hook is attached to the rafter and a small section is ground out of the above tile to allow it to sit flush on top of the hook. these are very sturdy hooks which are fully adjustable for the thickness of any tile encountered.
Post and flashing, used on peg tiles, small flat tiles & slate, the post is bolted to the rafter and a small hole is cut in the tile(s) above to allow the post to protrude, it is then flashed to stop water ingress. Additional wood may need to be installed where the foot falls where there is no rafter. (We try to keep all feet under the array where possible)
Flat roof system. This particular system was manufactured by ourselves and does not penatrate the roof surface. it is held down with concrete slabs, evenly distributed across the system. the pitch is low to come within the 200mm height restriction imposed without planning permission. Any pitch can be manufactured but above 200mm you will need to get planning permission. (This system will only be as flat as your flat roof, it is not adjustable) a survey will need to be carried out to ensure the condition & structual integrity of the roof.
Ground mount system, designed and built by ourselves. Concrete pads were installed and a galvanised steel frame assembled. k2 rails were then attached.(please see here for details)
We have used many other systems to mount rails/modules but these are the systems we use on the majority of roof coverings/surfaces. Sometimes circumstances may require a different mounting system.