Hi All,
I'm looking to build a brick/block shed in the garden. There is one thing i'm not to sure about.
If i wanted to make a 1m long wall for example and i used 215mm brick, i would do as below.
215mm + 10mm + 215mm + 10mm + 215mm + 10mm + 215mm = 890mm (0.89m not 1metre)
If i add a...