A Live Nest Is Not Removed
Not by us and not by anybody sensible. Cutting a live nest out of a roof means opening a structure holding several thousand wasps, in an enclosed space, with the only way out behind you. There is no method that makes that a good idea and no reason to attempt it, because the colony can be killed without touching the nest at all.
The treatment goes in at the entrance and is carried inside by the wasps themselves. It reaches a nest nobody can see and nobody could get to, which is precisely the point.
Once It Is Dead, Can It Come Out?
Usually yes, and it is a simple job at that stage — an empty nest is dry paper and comes away in pieces. Whether it is worth doing depends on where it is.
- Reachable from the loft hatch, over a bedroom, large: reasonable to take out if you want the space back
- Against a water tank, or over stored items: worth removing, mostly to stop debris falling on things
- Deep in the eaves, behind the felt, in a wall: leave it. Getting to it means opening the structure, which is far more disruption than a dry paper shell justifies
- In a cavity or a flue: leave it. It cannot be reached without demolition and there is no reason to
What a Dead Nest Actually Does
Very little. It dries out, becomes brittle and breaks up over months. It does not smell, it does not rot, and it is not a food source that draws anything else in. The idea that an old nest attracts new wasps is the one worth dismissing plainly: wasps never reuse a nest, so an old one is not a magnet, it is litter.
The occasional exception is a very large nest directly on plasterboard, where the weight and residue can mark a ceiling. That is a case for removing it, and it is not the common case.
What About the Insulation?
Wasps build with chewed wood pulp, not with loft insulation, so a nest sitting in the insulation has not consumed it. Where a large nest has been built down into a blanket of mineral wool the insulation immediately under it is usually best replaced when the nest comes out, which is a small amount of material and a five-minute job.
The honest summary: treatment is the job, removal is optional tidying. It is not included in the fixed price and on most lofts we will tell you it is not worth paying for.