Cavity wall insulation

Stu666

I am looking at getting cavity wall insulation done to my detached house, which is very energy inefficient.

I've noticed the brick pattern is of the English Bond type, and, from what I can gather, this means it may not have a cavity.

Does anybody know if this is likely to be the case?

dander

How thick are the walls? A 9 inch wall is generally a solid wall and a 12 inch wall has room for a cavity. Broadly speaking.

macman

What year was the house built approx? Cavity walls came into widespread use about 1932.

ic

There may well be a cavity, but if there are occasional bricks that are end on, or a whole row like this, this means that the cavity can't be filled consistently without gaps. If there are gaps, these will form cold patches on the wall resulting in condensation. The alternative is to insulate on the inside instead - there's a variety of insulated plasterboards and "wall paper" available to do this. Problem with this method is the room gets slightly smaller, and you have the agro of having to redecorate.

vincennes_2

Hi
I am also looking at having Cavity Wall Insulation installed. We moved into our house last winter and we have a terrible problem with condensation on the double glazed windows. Each time, we put the central heating on, all the windows are covered with condensation. I don't understand why?Could the CWI help to cure this? Any info welcome.

macman

vincennes wrote: »

Hi
I am also looking at having Cavity Wall Insulation installed. We moved into our house last winter and we have a terrible problem with condensation on the double glazed windows. Each time, we put the central heating on, all the windows are covered with condensation. I don't understand why?Could the CWI help to cure this? Any info welcome.

No, because it won't make the windows any warmer-the condensation is just hot air from the CH hitting the cold windows glass. Decent double glazing should minimise this.
Still well worth having CWI though to keep your fuel bills down.

ormus

it maybe a false english bond. just half bricks inserted and not full ones straight across a double wall.