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A draught-proofing rubber fin is a metal or plastic strip that has nail holes and a rubber ‘fin’.

The strip is nailed onto the door or window frame so that when the door/window is closed, it pushes against the rubber to create an air-tight seal.

How to use a draught-proofing rubber fin

1. Cut the strip to the desired length of the door or window frame.

2. Position the strip so that the rubber fin is gently squashed against the door or window.

3. Work your way along the strip and hit the nails in place, making sure to keep a tight seal as you go.

4. Repeat the process along the top, sides and bottom of the door or window as required.

Self-adhesive draught-proof strips are usually available in white or brown and have different shaped profiles. ‘E’ shaped profiles are suitable for narrower gaps whereas the thicker ‘P’ shaped profiles are better for wider gaps.

How to use self-adhesive draught-proof strips

1. Clean the door/window frame to remove any dirt and grease.

2. Measure and cut the draught-proof strip to the required length to fit along the door/window edge.

3. Peel off the backing to reveal the adhesive and press the strip firmly into place.

Door brushes are screwed to the bottom of a door to prevent draughts coming from underneath.

How to use a door brush

1. Separate the metal (or plastic) brush holder from the bristles by sliding the bristle part out of the holder.

2. Cut both parts to the same width of the door. You might need a hack saw for this part.

3. Slide the brush back into its holder.

4. Hold the brush against the bottom of the drawer, making sure it is level. Fix a screw into each hole along the holder.

5. Before you tighten the screws, make sure the bristles are touching the floor when the door is closed. This will create the draught-proof seal.

A letter box cover is a plastic frame with a stiff brush that stops air coming through the gap. Don’t worry, they are flexible enough for someone popping post through the letter box!

Screws are usually provided but you will need a screwdriver to fit it.

A surprising amount of cold air can find its way through open key holes. A range of products are available to cover key holes, so have a look in your local hardware store.