I recently bought and had installed a sectional concrete garage that I will use as a workshop. It has an insulated door and roof so I only need to insulate the walls. The cost of lining clips was scandalous so I spent sometime Googling alternatives and there doesn't seem to be much out there, so in the spirit of attempting to give something back after I got some good advice from this forum here is what I have done. I used eye bolts, photo one shows how I just used a washer and nut to fix to the bolts already used in the garage, a few gentle taps with a mallet had the squared up to the wall. Then I offered up the timber below the eye bolts and drew down two lines with a square and drilled a hole at the mid point countersunk the hole, placed the timber into bolts, bolted (with washers) and cut flush. Then it was a case of insulating and covering with a vapour barrier. After the walls is the floor which I haven't decided on yet as tiles are expensive and rubber matting might not be durable enough. (Fishing for suggestions).