Levelling concrete on an incline - Sorting out a wheelchair ramp

[Ted]

I need to smooth a large expanse of poorly screeded concrete so that I can lay Kingspan on it. For the most part this will be relatively straightforward remedial work as it will just need a self levelling screed, although I may need quite a lot of it!

However, I also need to smooth some concrete that is on an incline as there is a wheelchair ramp in this property. Kingspan say it is OK to lay its boards on an incline but not ideal. Nonetheless, the Kinspan must be fully supported and the slab must be smooth and fee of any projections.

Unfortunately, the contractor who did the concrete work has made a real mess of the ramp and it has projections all over it and is far from smooth and so will not provide continuous bearing support.

If I pour self levelling screed on it, it will just run down the ramp to the bottom though, will it not...???

What is the best way of sorting out this ramp...??? Do you think I need some sort of concrete planer?

[lutonlagerlout]

ask simeon ted ,im sure he will have summat that suits your purpose
LLL

[Tony McC]

I'd etch it, then overlay with a granolithic mortar using a good bonding agent, such as Ronafix/SBR.

Not sure whereabouts you are: it seems grano can be hard to locate in Lower Britain - what do they use to bench manholes?? - but if you try a civils merchant rather than the usual Builder's Merchant, you might have more luck.

[lutonlagerlout]

i have done grano in pub cellars and such but its not a stock item,we use 2:1 sharp sand cement for benching,goes off like lightning
cheers LLL

[seanandruby]

maybe renderock gp, it goes on up to 30ml, then renderoc fc goes on up to 3ml. the gp should be sufficient if your overlaying it with kingspan.

[seanandruby]

what did you use?

[Ted]

I am not doing the job yet... I am working out solutions on what I believe is a bad build by a contractor. I will then hopefully employ a new contractor to remedy all the faults that the previous contractor has made and I will then bill the previous contractor for all this remedial work. That is my plan anyway!

[simeonronacrete]

Thanks for the Ronafix recommendation; you can lay a screed using Ronafix, min depth 6mm (providing bonded onto the base concrete), in layers up to 50mm thick, to 100mm and thicker. Not exactly sure how thick or thin your screed needs to be.

Have a look at:

Ronafix Screed, type "Ronafix" into the Seach by Name box then select Ronafix Mix A Floor Screed in the table.

or give us a call: 01279 638 700

Good luck.

Simeon



Edited By simeonronacrete on 1184137038