Cavity wall insulation

anotherbaldrick

iamcornholio wrote: »

The majority of new build does use full fill insulation

As for cavity air circulation being needed to dry cavities, that is not what happens or required according to established thinking. Anyway, air circulation in cavities negates the purpose of an insulating barrier - ie a cavity should be sealed

I was referring to houses in exposed situations. For these the Building Regulations reccomend that the cavities have only a partly filled cavity for the reason I have mentioned. It is standard practice in this locality. It does not negate the purpose of the insulating barrier as this is located on the inside wall leaf.

http://www.mortar.org.uk/downloads/miadata12.pdf

cyclonebri1

greenlaws wrote: »

Cavity insulation is dangerous. The cavity is there for a reason. Take it out / fill it and you risk major problems with condensation and water build up. NOT a good idea. Better to look at how your house works, and introduce insulation in the roof, run the heating more efficiently, put curtains or blinds over windows - anything but screw up the cavity and how it works...

Garbage, the cavity is there for several reasons, No 1 being structural, which doesn't come into this discussion, the only other reason is to prevent water/vapour from transmitting from the outer to the inner skins. + insulating the structure.

The cavity above DPC is simply to ensure insulation from the outer skin, fillihg with appropriate materials aids this

Provided the material used to fill the cavity is approved for such purpose then there will be no issue. If you don't understand the mechanics of a system then please don't post on the topic

Greenlaws, your advive should contain both a health and a wealth disclaimer.