IWI on existing walls

[DavidFrancis]

The SPAB (Society for the protection of ancient buildings) has been carrying out a 5 year study of moisture in solid walls with IWI.  This is a key line from the summary: "In conclusion, we find that as well as the influences of external and internal climate the performance of these walls is conditioned by their individual material components and context."

 

In other words, it's really, really difficult to tell what effect adding IWI to a solid wall might have.

 

If you're interested, you can find links to the both the full report and a summary part way down the page here:

http://stbauk.org/

[gravelld]

I think anyone who knew anything about the subject already thought that didn't they? Same goes for the retrofit of all dwellings, not just solid walled ones.

 

It's only the government who see retrofit as a bunch of tick boxes.

 

Cavity filled? Check! (Regardless of the thickness of the cavity)

Solid wall insulated? Check! (Regardless of the OP)

Replaced 1G with 2G? Check! (Regardless of whether the 2G is any good, the existence of 3G, and the fact that old 2G is not much better than 1G)

Fitted a waste water heat recycler? Check! (Give me strength)

Congratulations, you're energy efficient!