For the record, I am currently dealing with in excess of 120 pyrite cases in Ireland from as far away as edenderry up to north dublin. It is not a single quarry that has this problem and ultimately this problem is going to get bigger and bigger. I am what the courts term as "An Expert" in this field, but feel that advise is better given whne accurate and subjective. I recognise that this matter is very subjective for all house owners and I also accept that some builders have not done their best over the years to solve the defect. I am not representing any builders so my comments are not biased. Realistically the extent of the problem is now only being recognised, and historically many carcks were put down to simple shrinkage cracks. In canada the defect comes to light from 8-15 years whilst in Ireland the defect is appearing from 18 months up to five years. This is due to our geology in particular. I believe that Homebond etc and the builders are now recognising the implications of pyrite in their infill. Anyone can send me a private message and I will advise you as best I can. I have done this in the past and I have not charged anyone, considering the ethos of this forum. Public spirit and all that. As a footnote, the following counties have the problem confirmed, Meath, Offaly, Dublin, Louth. Ultimately there will be many hundreds of defective properties.