cavity wall insulation and the use of cavity trays.


Postby teamleader » Mon Oct 06, 2008 5:29 pm

how can i ge round the problem of having to fit a cavity tray, when the whole house has cavity wall insulation! surley its just gonna fall down and fill the tray anyway? am i right in thinking 99% of wall insulation stops this any way, more so if its simular to "instafibre".
would treating the wall with a clear waterproofer help?
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Postby welsh brickie » Tue Oct 07, 2008 11:42 am

use catnic boot lintols over all openings the design eliminates the use of dpc cavity trays and are fully insulated
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Postby teamleader » Wed Oct 08, 2008 7:59 am

cant replace the lentol as its in the original opening of the building and the wall insulation has been in about ten years. (and cost me a loy of money, so dont want to lose or disturb it).
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Postby welsh brickie » Thu Oct 09, 2008 3:22 pm

there is no way to install cavity trays unless you demolish the external brickwork above each opening
the insulation has some waterproof resistance but you could spray a clear silicone solution to the walls,it all helps
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Postby the specialist » Sun Jan 11, 2009 8:01 pm

Hi,

Please could you explain why and where you are thinking of installing a cavity tray. Was in the cwi business for 20 years so hopefully i can help.
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