How to Insulate Your Windows for Winter

As the colder months approach, you may be looking into how to insulate your windows for winter in order to prevent heat loss and keep your home warm and cosy. If you’re experiencing a cold draft in your house or feel that your central heating system just isn’t cutting it, your windows may be the culprit. Poor quality windows allow heat to be let out and cold to be let in, therefore reducing the overall temperature within your home.

Window insulation is a great long-term solution with one upfront cost as opposed to the ongoing monthly costs you will be racking up from your high heating bill. This type of insulation will also be much less expensive than insulating whole walls or flooring and could be the solution to your heat-loss problems. There are various techniques for insulating windows so it is important to explore your options and pick which one will work best for you and your home.

Double glazing

Installing double glazing to prevent heat loss in your home will involve a much larger upfront cost but it’s one of the most effective and long-term solutions available. Double glazing involves installing a window made up of two panes of glass, leaving a small gap in between to allow air to be trapped inside. This prevents hot air from escaping as well as cold air coming in from outside. Triple glazing takes this to the next level and uses three panes of glass to create maximum window insulation.

Double or triple glazing may be a better option if you prefer light, sheer-style blinds or curtains but still want to keep the cold out.


Window coverings such as blinds work as an effective window insulation method whilst also adding to the interior design of a room. In this instance, heavier fabrics will be most effective as they will create a barrier between the window and the room to prevent cold air from entering. Plus, fabric blinds can be matched to your existing interior to create a sophisticated style running through the entire room.

Blackout blinds work in the same way. They are made from thicker material designed to completely keep light out of a room, whilst also working to keep cold air out too.


Although fabric blinds work great for insulation, they may not be as suitable all year round. Alternatively, shutters offer versatility as they enable temperature and light control throughout the different seasons. They allow you to keep warmth in during the winter and shade you from the heat in the summer.

Other benefits of shutters include:

  • Control privacy – the slats allow you to minimise the view into your home whilst still letting light in.
  • Optimise natural light – can be fully opened, fully closed or half open, allowing you to let in as much natural light as possible whilst also creating a slight shade.
  • Stylish addition to your home – work as a sophisticated yet practical design feature, bringing in natural materials and neutral tones to your interior design.


Weatherstripping is the process of sealing any gaps or openings in your window to prevent heat loss and cold air seeping in. A solution ideal for temporarily fixing natural wear and tear such as cracks in window frames or splits in existing sealant. Weatherstripping will most likely come in the form of a self-adhesive tape made from varying materials. It’s easy to apply yourself and very affordable, making for an effective, quick fix for window insulation.

If you’re still stuck on how to insulate your windows for winter, get in touch with Allegro Blinds. Our team can offer more information and advice to help you make your decision.