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How to Insulate Windows to Keep Out Heat

Window at the top of a wall letting in light

When it gets hot in summer, we want to make the most of the warm weather outside. However, we also want to make sure that we can remain comfortable inside when we want to relax and get some shade. Here is our guide on our best tips to insulate your windows in summer and keep the heat out.

Weatherstripping

Weatherstripping is an efficient and cost-effective way to insulate windows during the summer months, helping to keep heat out and maintain a cooler indoor environment. By sealing gaps around your windows, you can reduce heat transfer, making it a smart choice for homeowners looking to improve their home’s energy efficiency.

Window films

Window films are a good way to insulate windows in summer and keep heat out. These thin laminates can be applied directly to the glass, reflecting sunlight and reducing glare without compromising natural light. This technology not only helps regulate indoor temperatures but also protects against UV rays.

Cellular shades

Cellular shades, also known as honeycomb blinds, are designed with unique air pockets that trap heat. Perfect for keeping heat out of windows, these shades can lower indoor temperatures during the hot summer months. They come in various opacities, allowing homeowners to choose the level of privacy and light they desire.

Blackout blinds

Blackout blinds are a good choice for keeping both heat and light out. These blinds are specifically designed to block out almost all incoming light, making them ideal for bedrooms or any room where controlling light and temperature is important.

Draft snakes

Draft snakes are simple and effective at insulating windows to keep the outside air out, especially in older homes where windows might have slight gaps. Placed at the window sill, these fabric tubes filled with insulating materials can prevent hot air from entering and cool air from escaping. They also work great at the bottom of a door if you have a draft coming in.

Bubble wrap

Using bubble wrap is a surprisingly effective and low-cost method to insulate windows and keep heat out in the summer. By applying a sheet of bubble wrap directly to the glass, air pockets in the wrap act as insulators, reducing heat gain through windows. This method works best for temporary insulation or for use in less frequented areas of the home, and would not be ideal as a long-term solution due to its makeshift nature.

Get energy efficient windows

Investing in energy-efficient windows is one of the most effective ways to insulate your home and keep heat out during summer. These windows reduce energy consumption by keeping indoor spaces cooler without the need for excessive air conditioning. Having these modern windows installed can often increase the value of your property.

All of our rooflights and skylights are expertly made and energy efficient, so browse our collection today.

Insulating shutters

Insulating shutters are effective at helping to keep heat out of windows during the summer months. These shutters are designed to provide an extra layer of insulation, significantly reducing heat transfer and ensuring that indoor spaces remain cool and comfortable. The downside is that they reduce the amount of light coming into the room.

Window awnings

Window awnings are an effective outdoor solution for insulating windows to keep heat out in summer. By shading your windows from direct sunlight, awnings can reduce heat gain inside your home, thus maintaining cooler indoor temperatures without compromising on natural light. Toughened Glass Systems clients can benefit from custom-designed awnings that complement the aesthetics of toughened glass installations, offering both functionality and style.

Shade landscaping

Shade landscaping is a natural and environmentally friendly way to insulate windows and keep heat out during the summer. Planting trees, shrubs, and other foliage strategically around your property can provide natural shade to your windows, significantly reducing the amount of heat that enters your home. For Toughened Glass Systems clients, incorporating shade landscaping can enhance the effectiveness of toughened glass windows in maintaining energy efficiency and providing a cooler living environment.

How can Toughened Glass Systems help?

Toughened Glass Systems are here to offer the best skylights and rooflights available. Installing opening and ventilated skylights into your home allows the hot air in your home to rise upwards and out of your property, creating better ventilation. Installing a rooflight or a skylight is a great way to keep out heat and keep your home cool during the summer months.

We offer an impressive range of products, including:

Get yours today or contact us for more information.

More helpful blogs

FAQs

What materials keep heat out?

Fibreglass, wool, cotton, paper, star, and certain types of foams are all known for their insulating properties and blocking heat out. However, blocking heat out in a window is a little different, as people want to preserve the aesthetic appeal of their property and many of these raw materials are not ideal for window coverings.

What is the best window covering to keep heat out?

The best window covering to keep heat out typically combines functionality with energy efficiency. Cellular shades are highly regarded for their ability to insulate windows, thanks to their honeycomb structure that traps air. Blackout curtains are another effective option to block sunlight and reduce heat.

Does foil in windows keep heat out?

Putting foil on windows can help keep heat out by reflecting sunlight away from the glass, reducing the amount of heat that enters a room. This is a low-cost, temporary solution during the hottest months.

What keeps heat out better, blinds or curtains?

Blinds, especially those made from reflective materials, can be very effective in blocking sunlight and reducing heat. Thermal and blackout curtains also act as barriers against heat when closed. There is no option that is better than the other, and it often comes down to personal preference and functionality such as window size. 

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2020-10-24
I am the owner of Top loft company ltd, after reviewing reviews from various companies I ordered 2 juliet balconies from tgs arrived within 3 weeks, comunications and help was brilliant. Thanks for all your help.
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2020-10-23
Great service from the team. Easy to order, good buying guidance and clear install instructions for my builder. Rooflights look absolutely great! The team at TGS couldn't have been more helpful in organising a smaller delivery vehicle to help with restricted access. Highly recommend TGS.
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2020-10-16
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Paul Smith
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2020-10-16
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2020-10-16
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2020-10-16
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2020-10-16
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Louise Newsome
Louise Newsome
2020-10-15
My job is to design the interiors for a lot of houses and a lot of times the hardest part was when the client wanted some really inexpensive rooflights that should look like some contemporary ones as well. That until I found Toughened Glass Systems and started working with them more and more. They have a lot of this kind of stuff at a very decent price, a price for anyone I can say. If you’re looking for cheap skylights for flat roofs or any types of roof lights, they probably have something for you.
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2020-10-15
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