Making The House Draft-free

Draft is one of the top issues that affect performance of a furnace. Making your house draft-proof can make major difference in your utility bills. Draft and ventilation are often confused with each other. But they are not same. Both of these allow the entry of fresh air from outside in your house. Ventilation happens in a controlled way. It reduces condensation and damp in the house. Drafts are unrestrained. They let in too much cold air and waste too much heat. If your house is free of draft, you can make it comfortable at lower temperatures. You can turn down you thermostat. This could save you another 10 per cent off your heating bill.

Draught gets into the house through –

• windows
• doors
• loft hatches
• electrical fittings on walls and ceilings
• keyholes and letterboxes
• suspended floorboards
• pipework going outside
• ceiling-to-wall joints

These loopholes should be plugged. But don’t do too much plugging in areas that need good ventilation such as in those where there are open fires or open flues, i.e. kitchen; the rooms where a lot of moisture is produced, such as the kitchens, bathrooms and utility rooms.

Materials that are used to stop drafts

Flexible silicon sealant


These have a consistency of a viscous gel. A sealant gun is used to put them in the gaps. They take a day to set and are water-proof. They are ideal for using around window frames, between skirting boards or floorboards.

Rubber Blades / Fine Nylon Brush Pile

If you have ill-fitting windows with gaps in excess of 5mm around them, then they can be sealed with these. They are attached in position using adhesive strips, or small screws. If the gaps are within 1 to 5mm then they are best to be plugged with rubber or polymer foam seal.

Chimney balloons

A good amount of cold air comes in through chimney too. Chimney balloons are ideal to stop it. These can be easily deflated or re-inflated as required and used at the chimney opening.

Brush Strips

They are either made of plastic or metal strips. Small bristles are attached with them. They come in various forms and design. They are installed on the bottom of doors to stop potential draughts entering the home. The metal strip is screwed into the door to hold them in position using screws. Brackets are also used to secure plastic strips.

Expandable Polyurethane Foam

If the gaps are large and irregular, polyurethane expanding foam can be used. They are sprayed in place with a straw like applicator, where it expands to fill the space.

 

 

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