Conormark,
Ya Edwardian is nice, hers me reminiscing about the grand 'ole days of the empire, servants in the basement and potties under the beds, ah it brings a tear to my monocle. I think the institute of architects needs to take a good look at itself, seeing how much the people of this country despise contemporary architectural design in favour of 'ye olde worlde styles'.
Back to the present, the insulation boards should be taped, with the outer layer having staggered joints. Low conductivity wall ties. The inner wall build first, insulation fitted tight to about a foot below the dpc level. At the windows you have to use a fire rated cavity closer. This gives 100 insulation rather than the 25mm used in standard cavity closing.
I'm finding it difficult to recommend window companies at the mo. Standards of installation need to be improved. Installers love that expandable foam stuff. Its useless for airtightnes. For sash windows there is a company called wood.... they are a good window for heritage buildings.
Ancon two part wall tie has been approved by my structural engineer.
My friend who built the 200mm cavity sourced suitable wall ties but he has warned me they are approx 1.5times the price of a standard tie. Not sure where he purchased them but will check it out and make sure they're certified.
thanks, could you post the names and product on here...... id appreciate that!!
Conormark / Buildright etc
I have been following this tread with interest. I am close to beginning my own home in the near future and was contemplating a 200mm cavity also. I have looked at 200 cavity with full fill blown bead insulation using Teplo wall ties. I'd be interested in any opinions on this build up and mainly the use of full fill bead?
Regards,
Bov2
i checked out the Teplo wall ties you have mentioned and their website says that they're currently being tested for BBA certificatrion in the UK. Are there any issues with using these in ROI in terms of compliance with building regs? Thanks for letting us know about the Teplo ties! I must get a quote for my house from them.
conor...
no certification = do not use....
im in the process of checking if the ties you linked to have certification.... they DO appear to be a much better product... the teplo ties is nothing more that a rebar!!...
Conormark / Buildright etc
I have been following this tread with interest. I am close to beginning my own home in the near future and was contemplating a 200mm cavity also. I have looked at 200 cavity with full fill blown bead insulation using Teplo wall ties. I'd be interested in any opinions on this build up and mainly the use of full fill bead?
Regards,
Bov2
The big assumption there is that you trust that the Kingspan Kooltherm's u valus for hot box test are similar to simulated installed u values. Well let me tell you that they are not even close, in fact the stated o.27 u values are closer 0.46 in practice due to thermal bridging and looping. Its one thing fitting insulation for a lab, quite another doing it on site.
Would the addition of the beads to the Kooltherm insulation bring the combined U-Value up to the level required?
I'm hoping to build this year also and am very interested in this topic.
From what I can see adding the beads to the kooltherm is maybe a achievable belt and braces approach, whilst also minimising complications at construction....then again this is my first build so am open to correction.
Boots
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