cavity wall insulation

[Tierney]

They became common in the building boom before WW2. The time taken to build was significantly less as there was much less brick cutting involved.
Strange, at the time it was considered as 'Jerry Building'. The two types of construction ran side by side for years. Later you weren't permitted to put anything into cavities! Cavities became mandatory in 1940s ish!
You can usually tell the difference DT by looking at the brick bond.

Roy.

Thanks Roy, there is a chance then that mine will have a cavity.

 

[Digit]

You'd get a good idea by simply measuring the width of the voids, the doors and windows. Also the 'norm' was for doors to be fitted inside the brickwork on solid walls and to the outter leaf in cavity walls so take a look at your front door, if it's flush-ish with the interior wall it's almost certainly a cavity wall.
Sorry I'll re-phrase that! If it's flush with the exterior wall it's most likely a cavity wall!

Roy.

 

[billybuntus]

6" humidistat extractor fan. They basically run all the time -very slow when not damp and fast when damp, fitted one to a customers house that had very damp walls in a kitchen that had been built on to house. They had water running down the walls and mould everywhere, fitted the fan and the water vanished within a few hours and when the black mould had been treated and painted over it never came back.
They are about £100 for a decent one but will work. They have back draft flaps built in so it won't make the room cold or drafty unlike air vents etc.

I bought a cheapo one for the shed but its not up to much. Do you have any reccomendations for a decent one, the slow speed when not too humid sounds good.

 

[eoinsgaff]

This is the BS drawing as promised. Its for blown mineral fiber.