I have just had a company lay new Indian sandstone paving in my back garden. Lots of the stones are moving. It looks like the sand/cement mix they have used has been virtually dry as I have been able to lift a couple out by hand and the underside of the stones has nothing stuck to it. I have paid for materials but not for the labour yet. What should I do?
Hi, tell them you are not happy with the work, and explain all the problems, the mix should be a wetish mix for the slabs to bond.
I would not pay them any labour until your work has been rectified. Indian stone should be laid on a wet sand and cement mix
Yes do not pay it has not been paved correctly if they are moving it sounds like the motor was not correct and we put a slurry mix on the back of the slab to connect the motor and the slab together
I'm sorry you are finding issues with your new paving. Firstly, I must say that Indian sandstone absorbs moisture from the mortar underneath, sometimes if the mix is aged (been sitting waiting to be used), it may not adhere as well as it should.
If you have not paid for the labour yet, they will be happy to help fix the problems unless you have caused damage yourself; which it doesn't sound like you have here. The slab will need relaying, which means cutting out the old mix and starting again on that slab, possibly using a new slab if this one is stained or damaged from lifting out. Alternatively a primer slurry can be placed on the only mix and the slab put back, but this isn't really the best way to do it.
Speak to your landscaper and explain your concerns. I am sure they will be willing to help if they are professionals as we all work very hard to keep our customers happy and to keep a good reputation.
You should speak to the person in charge ie foreman or owner of the company and tell them your not paying for the job they’ve done because they haven’t done a good enough job if there an honest and reliable good company they will fix it
Sometimes the person laying sandstone it will not be cemented in place. They will use 'fine sand' in the joints to hold everything in place which to be honest always works.
In this case, there is possibly 2 issues.
1. The ground was not prepared properly. The ground needs to be 'whackered' down with a machine to compress the ground and flat as possible so the slabs will not buckle when working on any edges encouraging movement.
2. Thee is enough compressed fine sand in the joints to hold everything together.
If the issue is the actually ground not being flat enough, I would have them to cement the joints.
I hope this has helped
Take care, Crafted Woodwork
They have done a terrible job pure and simple. A patio needs to be laid on a full bed of mortar.
Hi, I would advise you to have a word with the contractor stating that the paving is moving and you would like them re-laid on a wet mix bed. If you don't ask for the work to be redone the slabs will get worse as time goes on, especially with the cold weather approaching.
Get all of them out mix sand and cement and stick them back in. If you need any help let me know.
Get them to rectify the job before you pay them also sounds like they have the wrong ratio mix too much sand
Do not pay a tradesman till you are completely satisfied with the work you have paid for them to carry out you should not be to lift any flag by hand if correctly fitted and pointed
I would have them lift and relay the lot, the mix for Indian sandstone needs to be wet, being a porous stone the water soaks into the flags pulling the cement in which creates the bond keeping it stuck down with out that the mix may go hard but won't of adhered
Speak to your installer tell him exactly your problem if he is prompt and professional he will lift all of your paving and start again with the correct ratio of sand and cement for the mortar .
But you also have to bare in mind how did this school boy error happen it's basic either they are cowboys and aren't up to the standards of carrying out this work so don't pat them a penny .Get a new highly recommended tradesman in to carry out your work and you and your new patio will reap the rewards
The mix is not strong enough, they obviously don't no what they are doing, they need to correct it
They should do it again,
As Sandstone is not supposed to be laid on a dry bed, Laying sandstone paving should only be done with a full wet bed of Mortar at a ratio of 5.1 sand and cement and the slabs should be primed individually before laying using a slurry primer to aid with adhesion and to prevent salt blooms.
You have every right to hold on to your money until the job is finished to your satisfaction. If this can't be done then you should terminate your contract with them. You keep the slabs you've paid for and they walk away from the job.
Get them to come back to sort