Tim Alsop

I am also in Hampshire (Basingstoke) and considering SageGlass. Can you let me know which glass thickness you used for fitting in Internorm frame ? Also, did your Internorm UK partner fit the glass or did you have to get glass fitted by a different company after frame is installed ? Would love to hear more details. Thanks in advance, Tim.

Thank you. I am also having external blinds on south side of house so thinking of making room in Velox and having window on the concrete.

Hi I had a meeting with Internorm yesterday and they mentioned your project where Velox/Internorm were being used together. We also discussed how heavy windows/doors would be supported on Velox. I am interested to see that you used steel plates (as described above) but I am wondering why you didn't rest the window on the concrete core closer to inside edge of the wall ? Was that option explored ? Also, isn't there a cold bridge if you use steel bracket ? Thanks Tim

Thank you. Since this thread is about Velox and I am planning to build my house using Velox, can you share how you fixed this onto the Velox board ?

This product is about half the cost - https://www.envirobuild.com/collections/composite-cladding-pioneer#collection and they have their price on website.

Regarding the Trespa. I have ordered some samples for my project. It looks like a nice product. Did you consider anything else similar ? Do you know the cost per square meter ?

I am interested to see both. Thank you.

I'm interested in this type of cladding - do you have any photos to share ?

Did you cut off the external ties also before adding external cladding?

Yes, exactly. I wouldn't be concerned if I was you. Velox is a good product even with these small bars.

Thank you for the warning.

I am now considering the use of a ground-air (or ground-brine) heat exchanger to cool the air on hot day before input to MVHR. It is not same as air conditioning because of air flow rate, but it might be good enough to help regulate temp in house on a hot day. Has anybody else used this kind of product ? Example can be found at https://www.rehau.com/gb-en/building-technology/renewable-energy/ground-air-heat-exchangers

I have been told by many people that the metal ties have very minimal thermal loss. The alternative ties are not quite ready but I suspect in about 12 months they might be ready for use - they need to go through multiple approval steps.

Thats a good idea - ducting will be cheap compared to the air con unit, so I will explore this option for peace of mind.

Thats good to hear. Thank you.

yes, I will have a plant room and cinema room and these are other reasons why I want to find a cooling solution. Thank you

Good point about wine cellars. Thank you.

Sounds interesting. How does the heat pump cool the slab ? Are you pushing cold water around the UFH pipes ?

I will soon be building a well insulated air tight contemporary house, which will have an MVHR system. We have south facing glazing, so I am aware of solar gain etc. In the winter, we will be able to heat the house with very little cost, using the thermal mass to store heat, and the MVHR system will keep the air fresh and circulated. However, I am thinking about hot weather when we might want to cool certain areas of the house (e.g. in basement where it is not possible to open windows to cool the room), so I was thinking of an AC system like Invisible.AC (https://www.invisible.ac/). Does anybody have any experience of using this system and/or any other way to cool the house as well as keep the air clean ?

I also met with and spoke to some customers who used (or are using at the moment) Velox, so didn't just listen to what Velox had to say - it's important to get references to get a customer perspective. When I had talked to the customers, this is when I decided, not before.

I suggest you talk to Marek at Velox about these concerns. He won't give you sales patter.

I was same - settled on Velox and don't regret.

As I already mentioned in my last post, BBA certification is not required. Anyway, other products don't have some of the advantages that Velox has. Each product is not equal in terms of features/benefits. I don't want this to get into a fight over which product is best as I recognise that some people will prefer other products and some people (like myself) will prefer Velox.

On https://www.durisoluk.com/faqs/ you will see that it says it is approved for underground use, can be used for basements and also swimming pools. The same applies to Velox which is also using a wood/cement board that is waterproof and fire proof. This product is also suitable for underground, basements etc. Obviously with any ICF product it is sensible to apply additional waterproofing since you cannot just rely on waterproof concrete in the ICF. With Durisol the concrete layer is not continuous since the Durisol bricks have wooden tie bars between inner and outer walls. With Durisol the concrete is continuous. This is one of the reasons why I chose Velox instead of Durisol. I am planning to build a basement with it and I know it is used a lot for basement walls.

Why is Durisol not appropriate ?