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How to Insulate Your Conservatory in 2024: Tips, Cost & Benefits

Inuslate your conservatory with these methods and make your conservatory an enjoyable living space regardless of the weather.
Weston interior out, living room filled with furniture and a dining room table.

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Your conservatory should be a versatile, relaxing space you can enjoy comfortably all year round. However, these spaces are, unfortunately, notorious for their temperature extremes. In winter, we often find that they can become iceboxes that become closed-off zones from the rest of the house. However, in the summer, they become unbearable saunas that we enter and open all the windows and doors immediately.

If you’re tired of your conservatory’s temperature fluctuations, you’re not alone. We are here to explore why conservatories suffer from these issues and, more importantly, how to insulate your conservatory properly to avoid these issues and find optimal comfort and usability.

Why do conservatories get cold during winter?

Conservatories often suffer from colder temperatures during winter due to their design, their location, or even the direction they face. Multiple factors can contribute to this issue, such as:

  • Insulation issues: Although conservatories come in a wide range of styles, they all have something in common. Huge glass surfaces. With this vast glass exterior, heat quickly escapes from the space. A huge proportion of the heat is also lost from the roof of the conservatory. Inefficient roofing and insulation can make your conservatory feel more like a freezer, leaving it uncomfortable during the cold season.
  • Position of Conservatory:  The orientation and positioning of your conservatory can play a significant role in determining its temperature throughout the year. Often, the placement of your conservatory is influenced by the layout of your property, your available space and where your current entrances are. However, it is important to understand how these factors can affect the thermal conditions of your conservatory to plan its design alterations effectively. For example, if your conservatory faces north, it’s less likely to experience overheating issues, mainly because it won’t receive direct sunlight. This orientation ensures that the light is more consistent, reducing problems with glare and providing natural shade. This does, however, impact it in the winter with less sunlight and increased shade.

Having insulated roof panels will mitigate many of these issues, returning your conservatory to an all-year-round, comfortable living space.


Why do conservatories get hot in the summer?

Conservatories often become excessively hot during the summer for several reasons:

  • Greenhouse Effect: Conservatories, as mentioned before, are typically constructed with an abundance of glass, which is excellent for letting in natural light. However, this glass also traps heat. When sunlight enters the conservatory, it warms up the air and objects inside. Unlike the outdoors, where heat can dissipate, the enclosed space of a conservatory can become like a greenhouse, with heat unable to escape.
  • Limited Ventilation: Many conservatories have limited ventilation options, which can make it challenging to release hot air and bring in cooler outside air. This lack of airflow exacerbates the heat buildup.
  • Orientation: The direction in which a conservatory faces can significantly impact its temperature. South-facing conservatories receive the most direct sunlight throughout the day, resulting in higher temperatures.
  • Glare: The large glass surfaces in a conservatory can lead to excessive glare. This not only makes the space uncomfortable but also requires the use of blinds or other window coverings, which may further trap heat inside.
  • Inadequate Shading: Without appropriate shading devices or landscaping elements like trees to provide shade, conservatories can overheat quickly. Shade can be crucial for reducing heat gain and maintaining a comfortable temperature. Planting trees nearby or using a canopy may help with this.
  • Insulation: conservatories that lack adequate insulation are also susceptible to overheating.  Heat from the sun can easily penetrate the glass and warm the interior, making it difficult to control the temperature.
  • Glass Type: The type of glass used in the conservatory plays a role in how much heat is retained. Single-pane glass allows more heat to pass through, while double-glazed or insulated glass provides better insulation.

These temperature fluctuations can make your conservatory nearly unusable during hot summer days. One way to prevent the heat from passing through the glass roof is to explore alternative insulated panels that fit into your existing framework. This reduces the amount of heat absorbed as well as helping with glare and shading issues.

How to insulate your conservatory

To address the temperature extremes associated with conservatories, you need effective insulation. There are several options available to insulate your conservatory, and it’s important to understand the pros and cons of each before deciding which may work for you. Some of the DIY methods, although on the outset, appear more cost-effective, may only provide a quick fix to the problem and not be a long-term solution.

  1. Install Aluminium Foil

One common DIY hack many people try is to apply aluminium foil to the glass in your conservatory. This method helps to reflect some heat back into the room, providing a way to retain a little more warmth during colder months. While it is a cheaper alternative and will insulate your conservatory, it only offers limited effectiveness and may not be the most aesthetically pleasing option.

  1. Hang Curtains and Drapes

Using heavy curtains or drapes can help block out sunlight in the summer while providing some insulation in the winter.

However, choosing the right option depends on your conservatory’s unique features. Integral blinds work for vertical windows and doors, while pleated blinds are a popular choice for the roof, providing efficient use of space and heat control.

If you prefer drapes, consider blackout curtains for shading, cooling, and noise reduction, which work well for evening use. Sheer curtains offer privacy and are more lightweight, or there are even conservatory roof drapes, which provide some shade and offer a unique aesthetic.

For installation, you can either hire a specialist installer for precise measurements and quality fittings or take the DIY route and use a self-measure and installation kit.

Having curtains or drapes does mean that they will block out a significant amount of the natural light when pulled and require regular adjusting to get the ambience you’re after. They will also need cleaning to prevent the build-up of dirt and be checked that they aren’t causing added condensation.

Although window coverings provide some light and heat protection, they can be expensive, especially if they require a custom fitting and professional installation. They will not be as effective in regulating conservatory temperatures compared to specialised roof solutions such as CosyPanels®.

  1. Affix Solar Control Film

Solar control film is applied directly to the glass, reducing heat and glare from sunlight. It can be an effective solution to manage temperature fluctuations, protect from UV and prevent glare. However, buying good quality solar control film may be expensive. It can reduce the amount of warmth absorbed during the winter months and may not provide sufficient insulation for extreme weather conditions.

  1. Upgrade Your Conservatory Roof

One of the most substantial and long-term solutions to conservatory insulation issues is upgrading your conservatory roof. A well-insulated roof can help properly regulate the temperature, ensuring your conservatory remains a liveable space, whatever the weather. Upgrading your roof can offer many benefits, making it a sound investment. Here are some reasons to consider an upgrade:

  • Enhanced Thermal Efficiency: Modern roofing materials, such as insulated panels or high-performance glass, can notably improve the thermal efficiency of your conservatory. This upgrade means that you can keep your space at a comfortable temperature, making it a permanent extra living space in the house.
  • Energy Savings: Improved thermal efficiency means reduced reliance on heating and cooling equipment. By upgrading your roof, you can save on energy bills, making it a cost-effective choice in the long run.
  • Reduced Glare and Heat: Upgraded roofs can include solar control features that decrease glare and heat gain, providing a more pleasant environment for relaxation, work, or entertainment.
  • UV Protection: Many advanced roofing materials block harmful UV rays, protecting your furnishings, carpets, and fabrics from fading or damage. This ensures a longer lifespan for your interior decor.
  • Enhanced Aesthetic Appeal: Upgrading your conservatory roof can also improve the overall appearance of your home. It will give a more blended appearance from building to conservatory and allow flow through the spaces to appear more natural.  With lots of options available, you can pick materials, designs, colours and finishes that complement your property’s style.
  • Reduced Noise: High-quality roofing materials can offer sound insulation benefits, reducing outside noise such as heavy rain, traffic, or other disturbances, creating a quieter and more peaceful environment.
  • Regulatory Compliance: If your conservatory was constructed with outdated roofing materials, upgrading may be necessary to comply with current building regulations and standards.
  • Minimised Maintenance: Modern roofing materials often require less maintenance, saving you time and effort in the long term. Reputable roof upgrades come with warranties, ensuring peace of mind and quality assurance for your investment.
  • Personalised Options: With various roofing materials available, you can choose the one that best suits your preferences, whether it’s a solid roof, advanced glass options or insulated panels.
  1. Insulate Your Conservatory Roof

Among the most efficient ways to insulate your conservatory is by opting for dedicated conservatory insulation solutions, such as CosyPanels®. These specially designed panels are created to fit your existing roof, providing excellent insulation. With CosyPanels®, you can enjoy a conservatory that is comfortable throughout the year.

Here are some reasons why you might consider insulating your conservatory roof:

  • Temperature Control: Insulation helps regulate the temperature inside the conservatory. During the hot summer months, it can reduce overheating, making the space more comfortable. In the winter, it helps to retain warmth, keeping the conservatory cosy and energy efficient.
  • Economical: An insulated roof reduces the need for excessive heating or cooling, leading to energy savings and cheaper utility bills. It helps maintain a more consistent temperature in the conservatory, reducing the workload on heating and cooling systems.
  • Noise Reduction: Insulation can also dampen external noise, creating a quieter environment inside the conservatory. This is particularly valuable if you live in a noisy area or near a busy street.
  • Condensation Control: Insulation helps prevent condensation from forming on the roof’s interior surface and the windows. Condensation can lead to damp, mould and long-term damage to the structure.
  • Increased Property Value: Providing an upgraded conservatory space can enhance the value of your property. Potential homebuyers often appreciate a well-insulated and versatile space that extends the footprint of the property.
  • Protection: Insulation can protect the roof structure from damage caused by extreme temperature changes, which can lead to rot or other structural issues over time.
  • Versatile Use: With proper insulation, your conservatory can be used for various purposes, such as a home office, dining area, or additional living space, throughout the year.

How much does conservatory roof insulation cost?

The cost to insulate a conservatory roof varies depending on the chosen method. DIY methods may appear cost-effective at first, but they often offer limited insulation and may require regular maintenance. For a more effective and long-lasting solution, consider dedicated conservatory insulation products.

One exceptional option is CosyPanels®, which offers a balance of cost-effectiveness and superior insulation. They supply CosyPanels® directly from Germany. When compared to alternative Insulated roofing systems, they are confident that their direct prices will leave you feeling happy with your choice.

While there is an initial investment, when opting for insulated panels, it will provide significant savings on energy bills, provide a permanent space that requires minimal upkeep and ensures that your conservatory remains comfortable and inviting for the future.

What is the best insulation for a conservatory roof?

After exploring the various positives and negatives of the different insulation methods, it is evident that upgrading your conservatory roof with dedicated insulation products offers the best long-term solution.

Insulated roofs offer superior temperature control, making your conservatory an enjoyable living space regardless of the weather.

Products like CosyPanels® provide conservatory panels made from a lightweight UPVC wrapped around a layer of high-density insulation, which makes it cooler in the summer and warmer in the winter.

The panels fit into the existing framework and require no structural change.

Simple process with CosyPanels®

CosyPanels® provide a 5-step stress-free process to order and install your panels.

  • They provide a roof assessment to take details and measurements.
  • After the assessment, they will then provide a no-obligation quote to give you a clear idea of costs.
  • When you place your order, they will confirm how it looks and the installation time.
  • The order is manufactured to your exact specifications and then delivered to you at a convenient time.
  • Finally, installation takes place, with every process explained. They provide a clear handover and aftercare procedure so you can enjoy the CosyPanels for many years to come.


Your conservatory can be a fantastic addition to your home, providing a unique space for relaxation, socialising, or enjoying garden views. However, temperature extremes can make your conservatory uncomfortable during certain seasons. With the right insulation solution, you can transform your conservatory into a cosy haven.

Say goodbye to the chills of winter and the sweltering heat of summer and embrace the year-round comfort of your conservatory with our effective method to insulate your conservatory.

Ready to transform your conservatory? Request a free, no-obligation quote from CosyPanels® to discover how you can insulate your conservatory roof effectively and enjoy year-round comfort in your favourite living space.