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Fill my hole


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LR content - it's for the floor of my "will be built soon honest" shed/workshop/garage/evil lair.

At the moment I have a big concrete slab in my back garden, full width (about 24') and about 12' deep, however it's not level and as a result a huge puddle forms right where it would be most convenient to lie under the landy and change the oil. It's only maybe 1" deep but about 10' diameter on a bad day and I'd like to make it go away.

Can I use regular concrete over the top of it (bearing in mind it doesn't want to be more than 1" deep) or is there a leveling screed I can use (i used a little bit of it indoors where my fireplace used to be, but is it suitable for a workshop floor?).

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Self levelling isn't really suitable for for that sort of depth, you could use it and build it up in layers, and its not 'self levelling' you will need a float to spread it about.

What about a big masonry drill about 20-25mm and drill through the slab once or twice in the centre of the puddle, so it can drain away.

Once you've got a roof on you won't need to worry about it :D

Andy

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have to be a long drill :D

:lol:

25mm 450mm long masonry drills are standard fare for any plumber, pick one up at any merchant or borrow from a friendly plumber, hire shop's will even hire you one.

I don't doubt its 12" at the edges, but that does not mean it will be in the middle.

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latex wont be any good for that depth, the hole idea is good. could also try a strong watery mix of cement and screeding sand say ratio of 1:2 to build it up, dampen the area down first use a float or laying on trowel

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a couple of years ago we done a load of caravan bases down here in essex using a fiborous mix basically concrete with fibre doesnt need any reinforcing and holds toghether well at thin layers maybe worth a look failing that unibond the slab and use a strong sand and cement mix

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FF, nothing cheap will stick at that thickness and be strong enough to jack off. As I sell concrete I guess this is my specialist area :) Also as the slab is outside frost would be a problem.

As has been said drill a hole/drain or cut a channel with a grinder so it drains away .............. or buy a broom ;) ............. or buy some even bigger tyres so that you can maintain it stood up.

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As has been said drill a hole/drain or cut a channel with a grinder so it drains away .............. or buy a broom ;) ............. or buy some even bigger tyres so that you can maintain it stood up.

Yeah the "make a channel" option was being considered as I'd rather it runs off onto my lawn than create an underground pond under the slab <_<

Bigger (and quieter) tyres are on the shopping list, and may even happen soon.

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hello

best thing to do is cut some grooves in it were puddling apply a genorus coat of pva glue neat our dilute it a bit. then get some bags 25kg ones.

river sand

grano dust

cement.

mix it 2 bags sand 2 bags grano 1 cement and 1/2L pva

spread out on floor with steel float feather out edges with wetish mix. let set for 2hrs then remove any trowel/float marks.

it drys rock hard.

jobs a good en.

clean tools :lol:

swanny

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if it 10' wide, get a 10' or 12' 2x4, mix up some concrete, and use the 2x4 to level it out. This of course assumes that the slab is somewhat level at the edges(where the 2x4 would be straddling). A second person here comes in very handy. Nothing a 6pack can't of come.

Hope that help, good luck.

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It will soon be summer,so puddles won't be a problem.

Get that workshop built before winter!

Drill a hole,cut a channel,or add another layer of concrete or screed over the whole surface (at least 2").

Just do as Jerry does - use someone elses barn with a roof already on. :lol:

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