Standard windows (e.g. screwfix) are specified for brickwork opening heights in multilples of 75mm, i.e. 65 brick + 10 mortar. This suggests that the lintel above the window is the same height as the top of a brick, i.e. not bedded on mortar. Is this correct, or should be lintel be bedded with mortar above and below, e.g. 5mm, such that the overall mortar is still
10mm ? Thanks, Simon.- posted
18 years ago