What's causing paint on interior walls to bubble since heavy rain

maninthestreet

so you don't have cavity walls?

Mojisola

bells_on_it wrote: »

My house is stone but its painted therefore I can't see the bricks?? I'm wondering if the paint work is failing though and allowing rain through

A stone wall painted with modern paints can be a problem. Damp gets trapped inside the wall - the paint stops the wall from "breathing" and drying out.

https://www.oldhouse.info/ohdamp.htm
Section 4.