See the DIY Projects section on Air Bricks and air vents. Hire a heavy duty drill with a diamond core drill bit to drill through the stone and fit the duct and vent through, and over, the hole. See also the project on fiting a toilet soil and vent pipe to see how to handle a core drill.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!