Typical for me to be doing an outdoor job just as it starts getting
cold but hey ho.
Having built a small 6x4' shed I've discovered the ground isn't level
enough for it to stand on - there's a drop of max 45mm from corner to
corner so I've decided to use some spare paving slabs we've got to
make a proper level playing field for it.
None of the diy stuff I've read considers building a platform on
uneven concrete, they all assume a shed goes in a garden and advise on
turf removal/ground preparation etc.
Is it worth slabbing for such a small drop, and if so how much
sand/cement will I need to make a dry mix for the slabs to sit on?
You imply that your shed is sitting on the soil. I would have thought that
it would be better to have it up on slabs of some sort, or on a concrete
foundation. If you do this you could level it up at the same time. You'd
probably get away without any snand/cement if you levelled the soil
I can guess you speed-read my post :) What I said was:
This hopefully gives the impression I'm trying to build on uneven
I'm after either reasons to slab or not to slab, and in particular the
volume of sand/cement I'll need to lay said slabs.
It's not worth it while you are doing it (!) but afterwards when you look at
it it's well worth it. I use 6:1 sand/cement to lay the slabs on and 3:1
brushed into the gaps a while afterwards and gently watered as grouting.
(anti-spam is as easy as 1-2-3 - not)
Ta for that, but I think you're right about overkill. Yesterday we
thought about building a timber frame for it to sit on (I've got
tanalised joists left over from another project), and last night
wondered about making a concrete bed because then I'll end up with
having to heft the shed up only 45mm instead of several inches - one
of the issues is that the shed is already built and very
scrape it flat within an 1" .. then put down a nice bed of sand ... if you
are buying it buy sharp sand not builders sand.
Screed it over with a batten or plank so it is level.
Then put your slabs on that - rock them back and forth top bed them in ...
On Thu, 23 Oct 2003 18:18:53 +0000 (UTC), "Rick Hughes"
I'm still not sure if slabbing the area isn't overkill as it's already
concrete and such a small drop. I'm getting very tempted to just batch
up some concrete and pour it into a wooden frame, then I won't get a
weed problem and will only have to heft the shed up 45mm instead of
over a sandbed and thick paving slabs! Idleness :)
I've also got no means of cutting the slabs.....
We have building sheds and bases for over 25 years unless the ground is very
soft we don't recommend concrete for a base.
The water that gets under the floor (and it will) has no way to escape so
the floor joists end up sitting in a puddle for long periods of time.
Better to lay gravel or hard-core which will allow drainage.
So in this case where the concrete is at a slope will aid in drainage I
would then "level" with support bearers and shims to build up from.
On Fri, 24 Oct 2003 16:36:29 +0100, "John Ormiston"
Thanks for that John,
That's what the Missus wanted to do! The shed building instructions
say use paving slabs, and bits of me think I might as well go with a
concrete base since the construction of the shed panels themselves
make me think it's not going to last longer than a few years, if that,
so joists sitting in water won't be a problem :)
The term that springs to mind is 'friday afternoon construction' for
those of us that remember the friday afternoon cars that BL used to
put out in the 70s!
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.