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Posted: Thu Jun 23, 2011 11:26 am
by Raver Paver
Hi all
Am a patio laying noob, and having read all the advice on the website (which is absolutely effin' excellent) i'm still a bit confused about a couple of things.
I have removed the lawn from the back garden and wish to lay Raj Blend Sandstone (34 sqm).
I want to use a compactor on the soil and have been told (by a builder) I can lay 75mm dry mix, 10:1 bedding.
Would this be ok in your opinion?
Tony (on this site) recommends buttering sandstone but this isn't possible with a dry mix, is it? The buttering also helps with the grouting so two negatives to dry mix bedding in this regard.
Also, my garden backs onto woodland and is very often covered with leaves, berries, branches etc. I'm worried about algaefication on imported stone. Would you think i'd have a lot of trouble?
Many thanks
Posted: Thu Jun 23, 2011 4:47 pm
by lutonlagerlout
Hi all
hi
i'm still a bit confused about a couple of things.
us too
I have removed the lawn from the back garden and wish to lay Raj Blend Sandstone (34 sqm).
good choice
I want to use a compactor on the soil and have been told (by a builder) I can lay 75mm dry mix, 10:1 bedding.
NO NO NO
what straight on the mud?
10:1?
if you have all the topsoil out I.E. all the black soil
you could potentially lay straight on the mud
but there is no one on this forum that does that
100mm subbase,hardcore but preferrably type1
wacked to levels ,then 40-60 mm of bedding @5:1
Would this be ok in your opinion?
negative
Tony (on this site) recommends buttering sandstone but this isn't possible with a dry mix, is it?
i have never buttered as i go,normally use easipoint or romex so no need
The buttering also helps with the grouting so two negatives to dry mix bedding in this regard.
Also, my garden backs onto woodland and is very often covered with leaves, berries, branches etc. I'm worried about algaefication on imported stone. Would you think i'd have a lot of trouble? :;):
you will have a fone green patina every year,if you seal with a decent sealer ,lithofin stainstop or london stone have a new decent one,then it will make it easier to keep clean,but you will have to maintain it same with any patio near trees
hope this helps
cheers LLL
Posted: Fri Jun 24, 2011 2:50 pm
by Raver Paver
Hi LLL
Thanks for replying.
I was going to dig out the area to 97mm (75mm for the dry mix and then 22mm for the slabs) and then compact this area.
Does that make it any better or should I go deeper and put the type1 on?
My understanding was that for light traffic a sub base wasn't necessary?
Dry mix at 10 parts sharp sand to 1 part cement as recommended on this website.
However, I may reconsider paving if you think the Algae factor might be a recurring headache.
Thanks again for your help
cheers
Posted: Fri Jun 24, 2011 6:33 pm
by lutonlagerlout
everything gets algae in this country
as pros we have to install a sub base
and cement being cheap better to make it stronger
you are talking maybe £30 more on the whole job to make it 5:1
do it right do it once
LLL
Posted: Fri Jun 24, 2011 9:04 pm
by Injured
As LLL says dig off to allow for 100mm MOT subbase, 50mm 5:1 sand cement bedding layer and then the depth of the thickest flag.
That way you will be installing a patio that will last for years and if compacted right wont sink .
Posted: Sat Jun 25, 2011 4:38 pm
by Raver Paver
Thanks very much guys. I'll take your kind advice.
I was hesitant about not including hardcore but thought i might get away with it, lol.
Thanks again guys