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Based in Cheddar, Majestic Designs (UK) Ltd is one of Somerset's highly recommended double glazing specialists.

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How to Insulate Your Home from the Heat This Summer

30th June 2025 |

Energy Efficiency

As British summers grow warmer and drier, keeping your home cool is becoming just as important as staying warm in winter. And while fans and air conditioning units might offer quick relief on the hottest days, they use a considerable amount of electricity and often do little more than move warm air around.

We all know that double glazing improves energy efficiency and keeps our homes cosy during the colder months, but what many people don’t realise is that it’s just as effective at insulating your home from the summer heat.

How Can Double Glazing Keep My Home Cool in the Summer?

Double glazing acts as a thermal barrier between the inside and outside of your home. The space between the two panes of glass, filled with either air or insulating gas, slows down the rate at which heat is conducted. In winter, it keeps warm air from escaping. During the summer months, it works in reverse, preventing external heat from entering your home.

While it may feel counterintuitive, keeping your double-glazed windows closed during the hotter months can actually make your home feel cooler. Almost all double-glazed windows have trickle vents, enabling air to circulate even when the window itself remains shut.

Choose uPVC Doors

Unplasticised polyvinyl chloride, commonly known as uPVC, is a low-maintenance and resilient material used in homes. uPVC is known for its optimal energy efficiency, keeping the temperature in your home stable throughout the summer. Modern uPVC doors are highly efficient, and refurbishing your home with uPVC doors ensures a comfortable internal living space both in the winter and summer months.
White Upvc Windows

At Majestic Designs, our double-glazed windows are A+14 energy rated, so your energy bills drop whilst maximising your light. We use only the highest quality uPVC and aluminium materials, offering a wide range of double-glazed windows for your home.

DIY Tips for Heat Reduction

Investing in double-glazed windows and uPVC doors is a great way to save money and regulate the internal temperature of your home. There are also other tips and tricks you can use to keep your house insulated and cool in the summer heat.

DIY Tips for Heat Reduction

Investing in double-glazed windows and uPVC doors is a great way to save money and regulate the internal temperature of your home. There are also other tips and tricks you can use to keep your house insulated and cool in the summer heat.

Implement Proper Window Treatments

Shutters and blinds help control heat and sunlight in your home, so make sure you close these when the sun beams into the room. You can also keep windows and doors closed during the day, to reduce heat transferring into the home. This allows double glazing to do what it’s supposed to and prevent heat transfer from one side of the window to the other. At night, opening windows allows hot air from your home to move outside.

Sensible Light Switches

Most energy created by household lightbulbs is emitted as heat. Switching to LED lightbulbs can reduce the heat created in your home and reduce energy bills, which is both beneficial to you and helps support the environment.

Check for Gaps and Draughts

While sealing gaps is usually associated with winter warmth, it also prevents warm air from sneaking in during summer. Gaps around letterboxes, keyholes and door seals can all undermine your cooling efforts. Simple draught-proofing strips are affordable, easy to install and offer surprising impact.

Create Airflow

Strategically placed fans can help, but it’s airflow that makes the biggest difference. Cross-ventilation – where cool air enters from one side of the home and pushes warm air out from the other – can be particularly effective in the evenings when outside temperatures drop. If your home layout allows, opening upper and lower windows on opposite sides helps draw cooler air through.

If you’re buying a new fan, opt for one that actively cools the air rather than simply circulating it. Some models even include ice or water tanks for added cooling without relying on full-blown air conditioning.

Embrace Summertime with Majestic Designs

From higher energy efficiency to improved security ratings, double-glazed windows and modern uPVC doors offer several benefits for homeowners in the hot summer months. Refurbishing your home could be the answer to transforming your living space and feeling comfortable on hotter days.

For over 22 years, Majestic Designs has manufactured a range of windows and doors here in Somerset in our state-of-the-art factories. We are committed to providing exceptional doors and windows to suit all your requirements. Our fully employed, experienced lead team of MTC registered and FENSA accredited lead installers have a reputation for excellent craftsmanship and customer service.

For more information about our range of double-glazed uPVC and aluminium windows, get in touch with the team at Majestic Designs today.

With over 3,700 independent reviews on Fairtrades.co.uk, Majestic Designs are proud to have earned an above 9.48/10 rating in customer satisfaction Click to find out more

Customer Testimonials

“The fitting team were a credit. Clean, efficient and pleasant to know. Site left in a very clean state. Thank you.”

Mr & Mrs Parrott, Weston-Super-Mare

“All round excellent service. Used you in our previous home and was delighted with both installations you have done for us. Thank you.”

Mrs Hammerley & Mrs Manson, Weston-Super-Mare

“I cannot fault anything & best thing I ever did. I am relieved & happy that I have attractive doors & windows. Thank you.”

Mrs O'Connor, Tiverton

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Mrs Twitchett, Puriton

Local area installations

Serving clients across Somerset and the South West

Majestic Designs install quality double glazing products throughout Somerset. From Taunton to Yeovil and Weston-super-Mare to Wells; our insistence on quality installations and outstanding customer care remains the same. With our factories and showroom in Cheddar, we are conveniently located in the heart of Somerset, with easy access to the surrounding towns and villages. As part of the local community, we are dedicated to improving the lives of all our customers and by employing a local workforce we are investing in the future prosperity of the area.

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