Improve energy efficiency of the doors and windows reduce heating costs

If the joint between the frame and the structure is not air and water tight, it can be easily corrected by caulking with fibreglass insulation loosely placed between two beads of slightly compressed polyethylene foam.and For leak-proof sash windows, add tubular or V-shape weather stripping.and for Sealed windows simply replace the glass with high-energy efficiency glass which will cost much less.Apply transparent film to windows installing a transparent plastic sealing film with a portable hair dryer will make windows much airtight.