It’s Easy To Save Money On Heating Bills With DIY Sash Window Insulation

by Damian Hounslow

Sash windows are lovely and romantic architectural features but they can be drafty, especially in older homes. To be warm this winter, save money on heating bills with DIY sash window insulation

Start by cleaning the bottom of the sash well. Allow it to dry thoroughly; trapped moisture increases the chances of wood rot. Next, measure the width of the sash and cut a piece of self-adhesive foam insulation to the same length. Attach this carefully to the bottom of the sash by pulling away enough backing to stick one end of the adhesive to the sash. Then pull the backing away as you attach the insulation. This method eliminates the problem of having the foam stick to the wrong place.

After the sash is insulated, clean the window jamb thoroughly. Allow the jamb to dry thoroughly as well. While it’s drying, cut some V-channel weatherstripping into two pieces that measure one inch longer than each jamb height. Attach each piece separately to the jamb sides, tapping some finish nails into the ends to hold it in place.

Next, clean the window jambs and let them dry completely. While they’re drying off, cut V-channel weatherstripping into two pieces that are each one inch longer that the height of the side jambs. Once the jambs are dry, press each piece against the jamb and secure it with finish nails at top and bottom. When this task is done, cut V-channel weatherstripping into a piece that’s the same width as the sash. Lift the window a few inches so that you can get to the outside of the sash. Position the strip against the top of the outside sash, and attach it by pulling away the backing as you go.

For a window that will be closed throughout the season, seal it around all the inside edges with rope caulking, smoothed using your fingers or a spoon back. This way it will be easy to peel away the caulking when the weather warms up.

A more complicated method allows homeowners to save money on heating bills with DIY sash window insulation

Use a pry bar and a hammer to take off the molding around a window. Measure the vertical space between the side jambs and the drywall or plaster. Then cut a piece of rigid foam insulation that’s backed with foil to the height of the space. Apply a foam sealant made of polyurethane that expands into the spaces at the jamb’s top and bottom for a complete seal.

Push the foam installation into the jamb spaces on either side until it’s flush with the wall surface. Seal the seams where the wall and the insulation meet with adhesive-backed foil tape, the kind used by heating contractors. Replace the window molding over the insulation, and the job is done.

Either of these methods will save money on heating bills with DIY sash window insulation.

Sash window refurbishment makes your home look nicer and also reduces costs. When sash window draught proofing is finished, your home will be not as likely to lose heat around windows.