| Laying
a patio
For years to come, the durability, functionality and
general appearance of your patio will depend on how
you address the following stages:
Stage
1 - mark out the area of your patio and dig
down approximately 200mm. If this involves removing
any lawn or top soil, consider re-using them in other
areas of the garden.
Stage 2 - lay and level your sub base
(Hard-core or Crusher Run) to a thickness of about 100mm.
The depth of sub base depends on the type of usage you
are anticipating.
Stage 3 - a level course of laying
base is required to a depth of approximately 50 - 60mm.
It is quite permissible to compact this and then lightly
lift the surface with a rake to facilitate laying.
Stage 4 - there are many acceptable
routines for laying the paving i.e.
-
place five orange sized blobs of cement mixture
on the back of a paving slab, introduce it to the
patio and press gently down until in a level position
-
sprinkle dry cement directly onto the laying base
and place the paving slabs on top
-
lay the paving directly onto the laying base.
Whichever
method you use remember to keep checking the level.
Stage
5 - once completed leave the patio overnight
or longer if possible remembering that if you have used
cement mixture on the back of the slabs this will take
time to fully harden. Depending on the type of paving
used, brush in kiln dried sand or point with mortar
into the small spaces between the slabs. This will give
it that professional, finished appearance.Considerations
-
When calculating the depth to dig out allow for
the thickness of the paving if you want the patio
to be
ground level.
- If
the patio is to be above ground level you must consider
how to restrain the paving with edging.
-
Ensure that you allow a gentle slope for water to
freely drain away from buildings.
-
Do not brush dry cement powder across the faces
of flagstones, microscopic particles will remain
and become very apparent after the first rain to
fall on them.
Laying
block paving
Block paving looks good. It is hard wearing, easy to
maintain and has simple handling qualities. This means
that certain projects are within the abilities of most
DIY enthusiasts. Be it patio, driveway, hard standing,
pathway or feature area, the simplicity and versatility
of block paving makes your creative ideas easy to translate
into practical applications. There are various designs
to choose from to suit your taste and aspect. However,
you can introduce your own design or pattern by using
different colours. For marking out, digging out, compacting
and laying course see stages 1-3 above.
The blocks require a firm edge restraint to hold them
in position. This edge must be cemented or fixed firmly
in position to hold the blocks in place once weight
is brought to bear. Remember to allow time for any cement
to harden fully before laying.
Start laying from a firm point (i.e. the edging restraint)
working away from you. Lay in the design chosen trying
to work in straight lines with the blocks firmly against
each other. You may choose to leave any cuts to the
end and do them altogether or you can do them as they
become apparent. Do not walk on the blocks until the
job is finished and all are locked into position.
Once
complete, the whole job needs to be compacted to lock
it into position. It is advisable to have a rubber cover
on the Plate Compactor when doing these final runs to
avoid unnecessary scuffing. Once locked into position
spread kiln dried sand on to the blocks and brush it
into the fine spaces between. This gives a finished
and professional look. Blocks can be sealed if required
but it is advisable to seek the recommendation of your
stockist.
Building
walls
As with any other type of building work preparation
is the key. Start by digging out the foundations. How
deep these are depends on the size of the intended structure.
You may need to fill the bottom of the trench with hard-core
or sub base dependant on the planned height of the wall.
Pour rough mix concrete into the trench, roughly level
it and then leave it to harden. This will now form the
base on which your wall will be built.
Lay blocks on the prepared base and check with a spirit
level. Use a string tautly fixed on two points at either
end of the trench to maintain direction. Repeat the
process until the desired height is achieved. For walls
above two courses you may need to seek professional
help.
Remember to leave drainage gaps in the wall if soil
is retained by it above ground level. When laying the
blocks on top of each other stagger the ends to give
greater strength and visual appeal.
Quick
reference guide to quantities
Paving - 1(one) square metre requires approximately:
5 450 x 450mm paving slabs - or
3 600 x 600mm paving slabs - or
2 900 x 600mm paving slabs - or
45 210 x 105mm paving blocks
Example:
To create an area 5 metres x 3 metres = 15 square
metres. Using 450 x 450mm slabs you would need
15 x 5 = 75 paving slabs.
Walls - 1(one) square metre of frontage requires
approximately:
16 full blocks (400 x 150 x 100mm)
Customer Helpline 01748 834184 |
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