Porch damp/paint question.

Leif

tony6403 wrote: »

MrInvestor wrote: »

Most pre-1940 houses have air bricks. If youfind a Victorian house with a damp problem, chances are the air bricks havebeen removed or blocked up because some idiot builder said that they weren'trequired ...and obviously Victorian houses have no alternative ventilationprovided by weep holes or open perp joints.

REPLY Victorian houses did not have cavities. An extract from a council website : Cavity walls are generally found on dwellings built after 1932. Before this, the main form of construction in the UK was the solid masonry wall

I think you misunderstand the post you quote. Victorian houses usually have suspended floors, with soil beneath. The air bricks allow ventilation of the void below the suspended floor. This is nothing to do with cavity walls, and MrInvestor did not refer to cavity walls either. I assume he is aware of when cavity walls became commonplace.

One cause of damp in Victorian houses is, as clearly stated, the blocking up of air bricks.

tony6403

Leif wrote: »

I think you misunderstand the post you quote. Victorian houses usually have suspended floors, with soil beneath. The air bricks allow ventilation of the void below the suspended floor. This is nothing to do with cavity walls, and MrInvestor did not refer to cavity walls either. I assume he is aware of when cavity walls became commonplace.

One cause of damp in Victorian houses is, as clearly stated, the blocking up of air bricks.

No, I certainly did not misunderstand the post.
If you read my earlier posts you will see that your summary of the position is exactly what I have been saying i.e. air bricks ventilate under the suspended floor.
Mr Investor IS referring to the ventilation of cavity walls and that has been the focus of our exchange of views.
As I said , please read all the posts and you will see what I mean.