Long story. Pest control guy believes we've got rats climbing up the inside of a wall cavity and from there getting into a loft space. He advised that we should remove some roof slates so that the top of the wall cavity can be accessed from above, and then that we should block off the top of the cavity (perhaps using some kind of stiff mesh that rats can't chew through) - and then replace the roof slates.
(loft space is sloping and incredibly tight so it's not possible to do this job from inside the loft - we'd need one of The Borrowers for that)
Does this sound right? Is it normal for the top of a wall cavity to be "open" (so that there's a route into the loft space? If so, are there any problems associated with blocking it with mesh etc.?
Pest control guy isn't a builder/roofer, so I wanted to get a second opinion on this.
Thank you.
(loft space is sloping and incredibly tight so it's not possible to do this job from inside the loft - we'd need one of The Borrowers for that)
Does this sound right? Is it normal for the top of a wall cavity to be "open" (so that there's a route into the loft space? If so, are there any problems associated with blocking it with mesh etc.?
Pest control guy isn't a builder/roofer, so I wanted to get a second opinion on this.
Thank you.