Porotherm blocks

ledbytheblind

Has anyone used Porotherm single skin clay blocks recently? Any pros and cons. Looking at using instead of traditional concrete block

mickdw

What overall system are you proposing.

Are you proposing a double wall with porotherm on inner?

I believe they can be rated at 10N but.personally I wouldn't rate them as system for use here.

The vertical joints appear to have no joint material with only a loose interlocking design.

ledbytheblind

https://www.boards.ie/discussion/comment/122291757#Comment_122291757

Either their 365mm insulated block or 425mm uninsulated block. Both single leaf with no cavity and likely a lime plaster to maintain breathability. Would keep standard concrete block for the deadwork below ground.

Structurally they can do multi story so less concerned on that front and more looking for feedback on the thermal and acoustic performance in practice. It seems like a simple system with a lot of test data but very little uptake over here.

Have you had much experience with the system/been into finished houses that have used it? And what would put you off the system?

I have heard good things about general comfort levels inside the houses but with so many variables in building it is hard to know how much can be contributed to the wall buildup alone without taking ventilation/air tightness and general detailing into account.

mickdw

I've no experience with that system but I personally don't see how you would suitably weather such a system in our climate.

sydthebeat

first check if house insurance is possible with this system