there smaller for a kick off and have 2edges touching the render at any one time hence holding flat to the wall its cuts through the render better overall giving it a nice flat finish before scrapping
Cheers boys thats what was confusing me some people call it H section and others I section actualy got a length of it out in Spain but never knew how you should use it, not seen them used in Spain but going out tomorrow so hopefully might get a chance to try it out.
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