We have just moved into a 1970 built house where the outside walls are rendered and painted white.
When it rains blisters appear in the paint. The blisters only appear on the wind exposed side of the house.
I do not believe the house has been painted recently as the previous owner was not...
Thanks for the reply.
The Amber spheres are Translucent, but they are solid.
They don't seem to be in the cracks or knots.
If they dissolve in White spirit does that point to sap?
I have found Amber spheres attached to my loft rafters.
Over the winter there was some mild condensation on the loft felt.
Could these spheres be caused by the condensation?