hi I'm Dave and your watching build with A&E today we're gonna be talking about
laying engine sandstone paving okay today we're gonna be talk about letting
sandstone paving you'll be laying in a random pattern so talk about the levels
how we set it out, the ground preparation and the mixes.
Ground preparation we have
about 180 Mills build up from base to finish level see a hundred mil stone
about 50 ml water beds and then the slab on top which is about 30 mil okay so the basic
tools for laying the spirit level, a rubber mull, the trowel and the disk cutter
obviously disk cutter if for cutting the paving in and everything else is just for laying
well the most important thing is attaining the levels to get a nice flat
patio so what we've got here is a level line
across here and they've got a full line this way so you can move the water off
the patio cause you've got to keep it moving
what we've done as well we've used it as a square line so we have set it up
square off the house so it can measure the joints across make sure our paving
and the joints were nice and trade
so the mortar mix we use is a sharp sand cement mix on a six to one we have it
nice and move see so that when you stick the slabs down they actually bond to the
slabs and stick really well so we're gonna do is bed up our first slab it's
quite important to get this nice and accurate because you want to try and get
90 percent contacts between the slab and the mortar bed so its better to take
a little bit longer to get the base ready
what I'm doing here just ratings through the mortar bed just to see if there are any stones
so I don't break the slab when I'm tapping it down the other thing is to make sure
you've got enough mortar into the corners so if you stand on the corner
there's no bed underneath it doesn't pop the slab
so what I am doing is hitting in the center of the slab this is so we don't press the
bed down on the corners and create a rocking slab and then what I do is I
just pack up the mortar beds underneath the edges to make sure it's got a good
contact and I do this around each slab
what i am going to do is a 10-millimeter joint okay so I'm taking my level across from the
fall line
so they're pretty good as an average that way and just checking the fall
again this way to make sure it's good
okay so obviously we're getting a random pattern and we're going to try and keep
a consistent joint of 10 millimeters but these slabs aren't necessarily cut
square so what we're going to do is take an average and we will have to trim out some
of the joints as the job goes on which is why we measure off the square lines
to keep all the joints true again tap in the centre because if you tap the
corners you end up with a void underneath the bed and then like a rocking slab
okay nice and level across there's no real voids underneath the level so you
know it's pretty true, it's nice and level this way and just touches the full
line
what we have to do is obviously fill these joints up I need to pack it in really
tight we use a compound called Geo fix which is like a air-cured resin compound so we would
wet the paving down cause it doesn't stain sweep it into the joints and then pack
it in this adapted tuck pointer
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