[Chiara]

Hi,
I need to have my walls replastered and I also plan on having my cavity walls insulated (with polystyrene beads). Do these jobs need to happen in a particular order, or are they completely independent of each other?
And what about insulating a solid floor with foamboards? Should it be done before or after replastering the walls? Or is the order irrelevant?
Thanks in advance!

[ToolTalk1]

@Chiara
All the jobs you’ve listed are independent Usually the cavity wall insulation is carried out from the exterior- Approved contractors drill holes through the bricks.
i would organise the work as follows:

1. Cavity Insulation
2. Floor Insulation
3. Plastering

[ChelseaDave]

I’ve always believed that cavity wall insulation is not a particularly good idea! After all the cavity is there for a reason, it is an air space between two walls and is effectively the insulation barrier and allows the building to breath. Think about it, bricks are porous and heat loss from a building is supposed to happen, this is what keeps the outer skin of the building dry and helps prevent the brickwork from crumbling! I’m sure we have all seen a wall that is generally darker and the brick faces have blown, this is because the wall is saturated and the frost has done its damage.