14-08-12, 01:41 PM
When laying bricks/blocks/ e.t.c i use about a 10mm mortar bed (cement & builders sand). if you make the bed higher it becomes weaker as there's no aggregate in the mix...is this correct? As you've guessed...I'm not a trained builder!
i ask because i need to put some slabs down in my garden. There steps and half of each slab will be seated on concrete. So i was going to lay them how i always have, normal mortar mix with around a 10mm bed.
but i messed up one of the steps when i was at the shuttering stage.(made it too low) So to even it out i need to lay one of the slabs on a bigger bed.....40mm would be perfect, 25mm would do.
If i mix up my mortar as usually but add say 1/2 builders sand and 1/2 sharp sand, will this allow me to use a larger bed but maintain the strength?
Hope that makes sense :o
cheers
i ask because i need to put some slabs down in my garden. There steps and half of each slab will be seated on concrete. So i was going to lay them how i always have, normal mortar mix with around a 10mm bed.
but i messed up one of the steps when i was at the shuttering stage.(made it too low) So to even it out i need to lay one of the slabs on a bigger bed.....40mm would be perfect, 25mm would do.
If i mix up my mortar as usually but add say 1/2 builders sand and 1/2 sharp sand, will this allow me to use a larger bed but maintain the strength?
Hope that makes sense :o
cheers