Cold Conservatory: How to Warm Up a Conservatory

A guide to measuring your old windows for replacement

Conservatories are a great way to enjoy your garden during the summer but when winter comes around they can get a bit chilly.

There are several ways to keep your conservatory warm during the winter – which we'll take you through during this article – but you'll find that replacing your conservatory roof is the most effective.

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6 Ways to Heat Your Conservatory

Finding ways to heat your conservatory goes hand in hand with taking steps to keep the heat inside. Here are 6 tips to keep your conservatory warm when the temperature drops.

1. Floor insulation

As most conservatories have hard flooring it can get very cold very quickly. Putting a large rug or mat down will help to a point but ensuring there's sufficient insulation under the flooring will really help to keep heat from escaping.

2. Roof insulation

While insulating a conservatory roof will prevent some natural light from making its way in, you'll be thankful for it during the winter months. As heat rises, much of it is lost through the roof so a form of insulation will prevent it escaping outside.

3. Reduce risk of mould

The primary cause of mould is a lack of ventilation and once it's formed it can lead to the temperature in the conservatory dropping. There's a couple of things you can do to avoid mould and damp in your conservatory:

  • Invest in a dehumidifier to remove excess moisture from the air
  • Keep the doors that connect the conservatory to the rest of the property open

Not only can damp lead to lower temperatures, it can also put people's health at risk so consider this point seriously.

4. Install a heat source

This might sound obvious but having a heating system within the conservatory will really help keep it warm when it's cold outside.

There are several heating options, including:

  • Radiators
  • Electric heaters: the quickest and cheapest heating option that don't need to be fitted permanently.
  • Underfloor heating: conservatory floors are often made of a hard material that gets cold
  • Infrared heating

5. Blinds and curtains

A lot of heat in a conservatory is lost through the windows so having blinds or curtains over the glass acts as a form of insulation to prevent it from escaping.

6. Replace the roof

Conservatories typically have a glass or polycarbonate roof to maximise natural light but these aren't exactly the best for keeping your conservatory warm.

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Best Types of Conservatory Roof

Finding an alternative to glass and polycarbonate for a conservatory roof will help to keep the heat from escaping.


A tiled roof could resemble the roof of the rest of your property which will arguably help to improve the aesthetics compared to polycarbonate and glass.


If you want to benefit from a conservatory roof that lets plenty of natural light in but will also be effective at keeping heat in a conservatory, a hybrid roof combines tiling with glass windows is the perfect solution.

Replacing a Conservatory Roof

Replacing a conservatory roof for warmth might sound like an expensive way to keep the heat in but there are many benefits, including making your conservatory more comfortable and also helping to reduce your energy bills.

In addition to keeping the conservatory warm during the winter, there are several other benefits to replacing your conservatory roof:

  • Increased thermal efficiency
  • Able to withstand various weather conditions
  • Enjoy your conservatory in all seasons
  • Will potentially add value to your home
  • Be protected by a warranty

How Much Does a Conservatory Roof Cost?

Replacing your conservatory cost will potentially cost between £3,500 and £7,500 depending on a number of things:

  • Type of conservatory roof
  • Size of the conservatory
  • Style of the conservatory

The conservatory roof types we highlighted earlier both possess excellent thermal efficiency qualities but a hybrid roof is likely to be more affordable.

Conservatory Roof Type Potential Cost
Tiled £5,000 – £7,500
Hybrid £3,500 – £5,000

As well as the cost of the roof itself you will also need to factor in the installation costs. As the cost of installation can vary greatly from installer to installer, we highly recommend comparing multiple quotes.

Using Windows Guide, you can get free quotes from up to 3 window installers based in your local area with no-obligation whatsoever to accept them. By comparing multiple quotes, you can be confident that you're getting the best deal possible – which you wouldn't know if you only got a single quote.

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