Page 2 of 5
Posted: Sun Aug 23, 2009 3:21 pm
by DNgroundworks
Rich has already answerd that question:)
Posted: Sun Aug 23, 2009 3:25 pm
by lutonlagerlout
chisel out all of the bedding under that 1 flag ,then knock up 5 grit sand a 1 shovel of cement with water till you reach a consistency where it wont hold its shape
trowel said mixture into hole and relay flag using a mallet
you may need to try this a couple of times to get the level right
cheers LLL
Posted: Sun Aug 23, 2009 3:38 pm
by big al
lutonlagerlout wrote:chisel out all of the bedding under that 1 flag ,then knock up 5 grit sand a 1 shovel of cement with water till you reach a consistency where it wont hold its shape
trowel said mixture into hole and relay flag using a mallet
you may need to try this a couple of times to get the level right
cheers LLL
Grit sand - like what was used originally - as in whats in the photo? How much would I need to chisel out? To an inch depth or more? Will that affect surrounding slabs?
I dont understand what you mean when you say it should have a consistancy where it wont hold its shape - shouldnt it be fairly compact but not to the point where it slips through your hand?
Posted: Sun Aug 23, 2009 3:39 pm
by Rich H
big al wrote:Rich - its the process that you do to relay the one slab that I'm after- can you advise me how.
Please- this is really going off topic - can someone just tell me how to rebed one slab? I'll worry about the joints another time.
If you scroll up you will see I wrote the following
"If you want to fix that first slab that you lifted then clean out the void completely, knock up a wettish mix of sand and cement - one bag of sharp sand to one shovel of cement should do, and re-lay the slab on it. Once it's set pour more KDS into the joints."
I don't know how to make that plainer.
Posted: Sun Aug 23, 2009 3:42 pm
by big al
Yep ok - got you - how deep would you take out?
Posted: Sun Aug 23, 2009 3:43 pm
by Rich H
You're welcome.
How deep? All of it.
Posted: Sun Aug 23, 2009 5:22 pm
by big al
Thanks. Right so..
1. Chisel out the existing bedding layer beneath the one loose slab
2. Mix sharp sand and cement to a wettish mix, a ratio of 5:1
3. Place in hole and tap down slab, ensure its level and leave to dry
One last question - sharp sand - is that what's in the photo's?
Posted: Sun Aug 23, 2009 6:41 pm
by irishpaving
Take out the original bedding 
Posted: Sun Aug 23, 2009 6:45 pm
by irishpaving
Grit sand/sharp sand........ same as in pic
Posted: Sun Aug 23, 2009 8:21 pm
by big al
Thanks.
Will chiseling out one slab sized area not weaken the surrounding slabs?
Also - isnt there a quick n easy way - like using play sand or something - you know - spread some on top of the existing beeding layerand tap the slab down.
I realise the way that's described is the professional way - but could this way also work? It just seems like a lot of hassle the proper way.
Posted: Sun Aug 23, 2009 9:09 pm
by James.Q
Ive been away for so long,my head now really is in pain, I hope this thread as been a wind up, If not i might aswell start watching big brother
Posted: Sun Aug 23, 2009 9:09 pm
by rab1
would personally think doing it correctly is the only option, as my grandad used to say - if a jobs worth doing do it right.
Posted: Sun Aug 23, 2009 9:21 pm
by Rich H
No, wait. I tell you what Al, put play sand down, put the slab in and sweep in what's left of your KDS. Please don't ask any further questions. It's pointless, you don't take any note of the answers.
Posted: Sun Aug 23, 2009 9:25 pm
by irishpaving
Think you'll find this site and the advise given is not about finding quick n easy ways of doing something. You have all the advise you need to sort out your issue properly in all of the above posts.
GL
Posted: Sun Aug 23, 2009 10:21 pm
by mickg
It just seems like a lot of hassle the proper way
FFS al do you not listen to anything that anyone says to you because your certainly not taking this good advice as being the correct way of rectifying the balls up of a patio you have at this moment in time
it could not be any easier than what has been explained to you
1. remove the existing base
2. mix sand and cement together and slowly add water (in a bucket or similar device, not the kitchen sink)
3. place mixture in the hole
4. flatten the mixture off using a piece of wood ( a steel trowel is just as good if you have one)
5. lay the flag on top of this mixture
6. place you hands towards the centre of the flag and push the flag down into this mixture moving your hands forward and backwards as you push down
7. check the height of the flag you have just placed in the hole with the surrounding flags to make sure they are flush with each other, use the piece of timber across the corners of the flag and check down the length of the flag too
9. if the flag is too low add more mixture
10. if the flag is too high then remove some of the mixture...doh
11. clean any mess you have made off the flags as the morning after is too late
12. when you are happy with the end result walk away from it
13. following day check to see if its set and brush kiln dried sand into the joints
or disregard all of the above and place play sand on top of the existing base and lay the flag on top of this sand, brush kiln dried sand into the joints and contact www.rightmove.com as thats what normally happens when your not planning on staying in the same property for any length of time