Draught proofing fills gaps and cuts down the amount of cold air entering your home. There are many types of material available from brushes, foams and sealants to strips and shaped rubber or plastic. The Draught Proofing Association can help you decide which is best for your home. Draught proofing is an easy, cost effective way to reduce heating bills. Most materials are available from DIY stores or insulation installers. Make sure you check the quality of the products first. It will affect their performance and durability. They should conform to the standard BS 7386.
By installing draught proofing you could save around £30 a year on your
heating bills and reduce your carbon emissions by 140kg each year.
Energy Saving Trust - Draught proofing page