New build - Blocks

12-10-2021 03:40PM #1

If you were to start building a new house now how would you ensure that your blocks are free from all minerals that could cause problems later such as pyrite or mica?

What exactly are the steps and costs involved?

Thanks.

Dr Turk Turkelton · 13-10-2021 05:16PM

Keep a block from each load that comes and and a couple of times throughout the build get a materials testing company to come and take them away for testing.

Costs 250 euro per test but will give you peace of mind.

Also proper concrete companies will provide certification for their products as well. These companies do not charge much more for their products.

13-10-2021 06:37PM

Do you know any around Dublin that would check for mica and pyrite?

Dr Turk Turkelton · 13-10-2021 07:38PM

@9214 I use a company called Mattest, give them a try.

13-10-2021 07:42PM

Would building a timber frame house mitigate it?

Dr Turk Turkelton · 13-10-2021 07:47PM

https://www.boards.ie/discussion/comment/118015919#Comment_118015919

It would make it way less of a problem as the outer leaf built with blocks is only a facade, would be easy to rebuild and relatively cheap.

If your inner leaf is also contaminated then your ripping your house to the ground.

Wouldn't be overly worried about mica unless your buying shoddy blocks in mainly the North Donegal area or a couple of other localised areas.

enricoh · 13-10-2021 07:53PM

If you buy from the likes of roadstone you'd be pretty well covered. A small quarry making their own blocks, I'd use them on the boundary wall only.

New build - Blocks

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