Patio doors are usually fitted with a smooth Velcro type tape to stop the drafts, over time this wears out and needs to be replaced.
As a stop gap measure (if you don't need to open the door during the winter) then any form of masking tape will do the trick. Be careful with what you use and how long you leave it, as some types of tape have an adhesive that goes hard over time and is the devil to remove.
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!