Conservatory Insulation Advice – Roof, Wall & Floor Insulation

Conservatories have always been considered as a relatively cheap way of adding extra space you property. Unfortunately, conservatories tend to be too hot in the summer and uncomfortably cold in the winter.  



Many people are very fond of the idea of building an additional room in their home, but they are not sure if they can afford one as conservatory prices are usually relatively high. It is true that building a conservatory that you can relax though the year, will require better planning and larger budget as there are many factors that have to be considered such as the the thickness of the walls, the insulation problems that the excess amount of glass creates, the soundproofing.

Furthermore, homeowners that are considering of building a conservatory, usually fear that they will end up with a room that’s will not be possible to warm in the winter and keep cold in the summer. There is no need to worry anymore about it because building a conservatory room that can accommodate you all year long is more than possible today with proper insulation.

Types of Conservatory Insulation

Whether we are talking about a wall, roof or floor, you should know that conservatory insulation can be applied. In order to understand the whole process, let us take a look at the detailed list while keeping in mind how much money you have in your budget.


The main thing when it comes to the insulation of a conservatory floor is the timing. The best way of doing this is to put an at least 100mm polystyrene layer put down before the concrete works would take place. This extra layer will be crucial during the winter allowing the room to keep the heat in a more effortless manner. Not to mention that with an insulation like that, the need of putting a rug or a carpet down will be diminished as well. You can still do it for decorative reasons of course, but the need will not be there. There are “green Polystyrene” as well, if you are after an eco-friendly solution.

Brick Wall  

When insulating a conservatory, the walling process is usually a two-part endeavor. The professional builder will usually install an insulated cavity wall into the elevated dwarf-wall to make sure that the insulation will be perfect. This installation will offer the best combination of efficiency and practicality. After that part is done, you can improve the insulation even further by buying eco-thermal uPVC or polycarbonate panels which they will use for the exterior of the room. This will add even more to the “heat trapping” effect which is the goal of the whole insulation process. The longer those walls can trap the heat, the higher the energy efficiency and the lower your bills will be.


Double glazing works for most rooms but it is not necessarily the best idea when we are talking about conservatory window insulation. conservatory-floorFor that you may want to opt for triple glazing. Granted, the prices will be higher but with a perfect insulation you could save that money within a year or two. Another option is using argon-injected insulation where they add an extra layer of gas between the two panes of a double glazed window, making them more resistant to losing precious heat.

Insulated blinds

One of the easiest and cheapest ways to control the temperature in your conservatory is to add some form of blinds or drapes between your rafters, as they can reduce the amount of heat that escapes. Heavy fabrics are particularly good at keeping the conservatory warm in the winter and cool in the summer.

However, keep in mind that fabrics are not that effective at keeping  the heat in during the very cold winter months, which means that the it might feel cold inside, if there is there is no heating in place. There is also the risk of condensation that usually forms on the underside of the conservatory roof, that can damage your blinds making them damp and turning them mouldy.

Replacing your conservatory roof

Insulating your existing conservatory roof can serve you temporarily if a quick fix is what you want. But if you want to avoid the aforementioned risks and you want more than two hours of comfortable temperature in your conservatory, then it is recommended that you replace the roof glazing with a solid roof conservatory. It is more expensive but is more durable and attractive. You would be able to cut down on your energy bills and it may add value to your property.

The weight of traditional roofing materials always pose a problem hence, people opt for the modern alternatives which serves your conservatory much better. A lot of contractors now choose the Metrotile roofs as a replacement for existing conservatory roofs due to its many benefits which include:

  • A very attractive finish
  • Faster installation time
  • Reduced energy bills as a result of good insulation
  • Inclusion of burglary and vandalism protection
  • The highest possible external fire-resistance rating
  • All the advantages of a traditional roof excluding the excess weight on the structure and foundations of the conservatory
  • Excellent protection to counter extreme weather conditions
  • A weatherproof guarantee of 40 years
  • Easy incorporation of ventilation and lighting systems as well as Velux windows that will keep your conservatory light and warm in winter and cool in summer.

Conservatory roof insulation

Does insulating a conservatory roof work?

Conservatories have the major challenge of extreme coldness or hotness at most times. You will get about two hours of convenient temperature in a day for a typical south-facing conservatory except you employ the service of someone to cool or heat it. The polycarbonate or glass walls provide only little insulation so it is advised that you add insulation to the roofing of your conservatory that is already in use.

Insulating your existing conservatory roof although there are different risks attached to fitting plasterboard and insulation into your already existing glass or polycarbonate roof nevertheless, it is very possible.

You may discover an accumulation of condensation underneath the glazing in winter. This will eventually damage your plasterboard ceiling when it drips on the insulation.

Condensation cannot be gotten rid of totally. It can only be reduced to a minimum by cross ventilation. Polycarbornate roofs seem to last for only about ten years after which they begin to let water through them. So we can say that conservatory roofs are not particularly built to last.

It is also within this period of ten years that glass roofs start to go through rubber gasket deterioration. Once your roof starts to leak and the water get to your plasterboard ceiling, it is sure to collapse with time.

When you are insulating a conservatory, sometimes you have to make some tough decisions. Luckily conservatory roof insulation is not one of those instances. When it comes to this, the process is pretty straightforward. There are two right choices, going glass or polycarbonate. Regardless of your choice, the panels should be around 32-35 mm thick so the heat will have a harder time to get away. You can have chambered walls in the panels, that’s a technique very similar to what they use in double glazing with the idea once again being trapping the heat. Bellow will find the most common question/answers to help you form a decision.


Is it costly to get an insulated conservatory roof installed?

Not if you think about the return you will get over its lifetime as well as how much you will actually use your conservatory. When you compare it to other kinds of roof modifications, an Insulated conservatory roofing solution is a much better value for your money.

Will the exterior of my conservatory have a different look after you have installed the new conservatory insulation?

The conservatory roof insulation is installed on the conservatory’s interior; therefore you will not see any visual alteration to the exterior.

How long will it take to install the conservatory roof insulation?

In most cases, it will only take 1 day to insulate your conservatory roof.

Will there be less light in my conservatory once you have insulated the conservatory roof?

Once the sun is directly overhead, you will definitely get less direct sunlight. But, your conservatory will retain enough sunlight through the windows at the side and this will be similar to a regular roof extension that is solid. The major advantage is the reduced glare from the direct sunlight overhead, which will allow you to enjoy your conservatory even more than you did previously.

Will I have to change the structure or framework of my roof in order to install your conservatory insulation?

This is not necessary in most cases as we can install an Insulated conservatory roofing solutions roof without having to structurally alter your sun-lounge or conservatory.

I don’t like the sound of rain on the roof - will the noise be reduced with an insulated ceiling?

Definitely! The conservatory roof solutions stop heat loss and they also provide great soundproofing due to the air pockets inside the insulation layers. This will minimize harsh weather sounds as well as reduce exterior noises like airplanes, rain, traffic etc.

Will an insulated ceiling get rid of the current condensation in my roof?

Yes. Condensation forms when the warm, moist air rises and comes into contact with the cold ceiling surface. Insulation stops the ceiling from getting too cold to form moisture and it is also another layer between the glass ceiling of the conservatory and the room.

Do I have to clear out my conservatory?

In most cases, no. If there is a lot of interior work to be done, you might want to temporarily relocate your conservatory furniture in such cases.

Conservatory insulation cost

Whether you need conservatory roof insulation, conservatory wall insulation or you want to insulate conservatory windows, the first step is always to get a quote from a conservatory insulation specilaist. The prices can vary tremendously so getting a wide range of offers should always be your priority. Of course price is not everything, you should always seek the best value/cost ratio.

Comments are closed.