Slate isnt just a fantastic choice for kitchen floors it can also lend a huge amount of impact to any outdoor spacer r with each paving slab hand riven and diamond sawn for a crisper edge natural slate provides a perfect backdrop whatever your taste in garden designr r always lay on a full bed of mortar being a dense material porcelain paving does not readily take up water therefore a bond bridge primer will help the paving adhere to the bedr r joint width 10 15mmr r thickness 18 23mm