10 Reasons Why Conservatory Wall Insulation is a Must-Have for Your Home

Conservatory Wall Insulation

Adding insulation is one of the best upgrades you can make to transform an impractical conservatory into a comfortable room you can enjoy all year round, no matter the weather outside. With the long list of benefits conservatory wall insulation brings, from slashing energy bills to reducing noise and preventing damp and mould, it should be a must-have for any home with a conservatory.

Conservatory wall insulation can really make a difference in regulating temperature and moisture levels to create a usable, enjoyable space regardless of the season. Given how impactful quality conservatory wall insulation can be, it ought to be high on any homeowner’s list of retrofits to consider for an existing conservatory structure.

Benefits of Conservatory Wall Insulation

Benefits of Conservatory Wall Insulation

Adding insulation to your conservatory walls brings a wide range of benefits. It makes it an excellent upgrade for any home. With the right insulation, you can transform your conservatory into a comfortable and usable room all year round.

Keeps Heat In During Winter

Insulated walls act as a thermal barrier. They prevent warm air from escaping your conservatory. This means your conservatory will keep heat in winter. You can use the space without having to wear five layers of clothing!

Better Energy Efficiency Rating

Insulating your conservatory walls increases the energy efficiency of your home. This could bump your Energy Performance Certificate (EPC) rating up a level. It would make your property more attractive to potential buyers.

Future Proofing Your Home

With energy bills rising, insulating your walls now will save you money in the long run. It also prepares your home for any future legislation changes around insulation.

Related: Conservatory Roof Insulation Costs & Benefits

Keeps Heat Out During Summer

In summer, the reverse happens. Insulation keeps scorching heat outside. This prevents your conservatory from becoming hot in the warmer months.

Reduces Your Energy Bills

Improving your home’s ability to keep heat in winter and stay cool in summer can cut your energy bills by up to 20%. Adding insulation does this. This saving will pay back your initial insulation investment.

Reduces Noise

In addition to regulating temperature, insulation also dampens external noise and absorbs echo within your conservatory walls. This allows you to relax or work without being disturbed.

Blocks Outside Noise

Those living near busy roads or under flight paths will benefit most from noise reduction. Insulation blocks unwanted external noise like traffic and overhead planes.

Absorbs Internal Noise

Insulated walls prevent sounds within your conservatory from echoing around loudly and travelling to other rooms.

Prevents Damp & Mould

Insulation stops cold air meeting warm air on your walls, preventing condensation which causes damp, mould growth and potential health issues if left unchecked.

Stops Cold Bridging

It puts an end to cold bridging, where exterior temperatures penetrate through poorly insulated sections of your walls. This is what allows that musty damp smell to form.

Regulates Moisture

Insulation maintains an even temperature across wall cavities. This regulates moisture levels, creating an environment where mould and mildew cannot thrive.

Related: Mould, damp or condensation in your conservatory?

Makes Your Conservatory More Usable

Makes Your Conservatory More Usable

Your conservatory becomes a comfortable and flexible living space for use all year round with insulated walls – banish gloves and scarves during winter!

Comfortable All Year Round

Say goodbye to Arctic temperatures in winter and Sahara desert heat in summer! Insulated walls give you the freedom to relax, work or play in ideal conditions throughout the year.

Flexible Living Space

Regulated temperature and noise mean your conservatory can become anything from a home office, playroom to a place to enjoy breakfast while admiring your garden.

Protects Walls & Furniture

Protects Walls Furniture

Insulation shields delicate walls and expensive furnishings like sofas from extreme temperature changes, preventing cracking, fading and other damage.

Controls Temperature Fluctuations

It puts a stop to dramatic swings from very hot to very cold. This reduces expansion and contraction of materials which can cause damage over time.

Prevents Cracking & Fading

Your walls and furnishings are safeguarded from cracking, peeling and bleaching – meaning they will last for many years while still looking like new!

Related: How To Care For Your Conservatory Furniture The Right Way


As well as financial savings, insulation offers environmental savings by reducing energy wastage and your carbon footprint. Every little helps the planet!

Reduces Carbon Footprint

Cutting energy demand means lowering your household’s carbon dioxide emissions. Insulation is an easy eco-friendly measure to implement.

Responsible Choice

Insulating old uninsulated buildings like conservatories is hugely important and responsible. Your home will use energy more efficiently with less wastage.

Ready to Insulate Your Conservatory?

Hopefully this article has convinced you that adding insulation should be a top priority retrofit for any conservatory! With all the money-saving, comfort-enhancing and planet-friendly benefits insulation brings, what’s stopping you from arranging to insulate your walls today? Your cosy dream conservatory awaits!

If you want to take information about floor insulation please read out the following article: Conservatory Floor Insulation


What is the best insulation for conservatory walls?

Polyisocyanurate (PIR) boards offer top performance and value as conservatory wall insulation. Opt for foil-face PIR for maximum moisture and thermal efficiency.

How much does it cost to insulate a conservatory?

Expect to pay around £800 – £1,500 for external wall insulation including materials and installation, depending on the size of your conservatory.

How thick should conservatory wall insulation be?

External wall insulation should be at least 50mm thick, but 100mm is optimal for the best thermal and acoustic performance, especially if walls connect to your home.

Can you insulate inside conservatory walls?

Yes, but external wall insulation is better as it prevents cold bridges forming in the wall cavity. Internal insulation also reduces floor space slightly more.

Should conservatory underfloor insulation be installed?

Absolutely! Combining wall and floor insulation gives complete temperature control. Underfloor insulation also prevents heat loss through the floor.

Scroll to Top