suspended concrete slab problem

[kizerzose]

Hello all, i would love your opinions on the problem i have with my house, i have had the nhbc take bricks out of the side of the house to be able to ascertain what type of concrete floor i have.
when the bricks had been removed we find first of all the cavity's are blocked soild above the dpc.........pretty bad start, but it gets worse, i then see that the floor system type is suspended, the concrete is wrapped in dpm, but under the slab there is a layer of polystyrene insulation board 50mm, between the under building and the slab

so this means the whole house is sitting on a layer of insulation board 50mm thick.....the nhbc say they are not going to fix the cavities or the polystyrene board issue........ and i also have damage inside the house, crack , tape pulling, nail pops that keep coming back after filling.

 

[^woody^]

What is the problem you are claiming? And how does your claim relate to the Buildmark Warranty?

 

[kizerzose]

Well my slab is moving up and down and causing internal damage, there are loads of houses that have had there slabs ripped out and redone, 2 have been bought back by the builder

 

[^woody^]

Then if its within the warranty period you have a valid claim

On what basis are the NHBC refuting the claim?

 

[kizerzose]

They are disputing the claim on the grounds that, they say I only have cosmetic damage all over my house, ie cracks, tape pulling, nails poping, every thing running off plumb and level.
See the pictures I have uploaded.

 

[^woody^]

The Buildmark Warranty covers the cause of the damage not just the visible end result

www.nhbc.co.uk/Warrantiesandcover/Homeowners/WhatdoesBuildmarkcover

IF the cause is failure to build to the NHBC Standards and is one of the covered items then you have a claim

Get some professional advice and an independent expert's report from a specialist surveyor or company that deals with NHBC snagging. Then sue for the damages