We have experimented with different types of oil for ease of application and durability but by far the superior oil in our opinion is Osmo (shop below)
50mm x 25mm treated batten.
We buy ours ready mixed for less hassle/correct ratios. We use Pavetuf Priming Slurry or Easy Prime (shop below)
90mm x 45mm
We buy ours from gardenlightshop.com, and specifically we use the Techmar Systems.
We have an in-house architectural designer who uses Revit.
We use Walter Strong deck tape and also Bitumen (shop below)
https://amzn.to/2RgKAM1 50mm x 20mm
https://amzn.to/31XmKXJ 82mm x 20mm
https://amzn.to/3mw4nCZ Bitumen
We use Carpenter's Mate screws by OSC. Link to their website on our homepage!
5mm for more privacy (shop below)
10mm for added light (shop below)
We use a concrete haunch and 2 part epoxy resin adhesive (shop below)