Hi I’d like fix vertical cladding to the outside of an outbuilding. My problem is how to best fix the cladding’s vertical counter batterns over a long run of about 5m of facade between the roof line and rsj lintel with only a void between them? When you look at the front of the building it’s essentially single story, with 2 brick walls on left and right with a rsj spanning both. And then 2 set of patio doors with some widows inbetween the doors. The rsj is the lintel over both doors and the windows. The roof has a slight pitch with the apex in the middle. The rsj is currently dressed/protected by a long metal flashing that runs the length of the facade. I want to replace the metal flashing with vertical timber cladding (and then with a much smaller flashing). Please see the attached picture showing the partially removed brown metal flashing. I feel I need to fix timber the the web and top flange of the rsj to give me adequate fixing points for the vertical batterns. Problems 1. I can’t easily get to the other side of the web to fix a nut to a bolt. What is a suitable alternative to a bolt? 2. I can’t easily drill a perpendicular hole into the top flange. As suggestions on how to secure timber to the top flange? Most of the load will be vertical but there will be some wind shear. thanks. Photo attached.