Just wondered if anyone has used the durgan gun for pointing patios.I have used it many times for various things but not pointing patios.With the size of the sandstone slabs you dont get equal size joints.You have to make it look pleasing to the eye(split the difference). I prefer smaller joints (12mm) but because of different sizes some joints no doubt will be up to 20mm. As you can only use building sand in the Durgan would it be OK for the larger joints? What's the maximum joint width for building sand? I am fairly good with the gun and the thought of pointing 100metres without it is a bit daunting. Ie making sure the mix is compacted,not staining the slabs etc. Sorry to go on a bit but wanted to give any potential helpers the full picture