If you’re looking to keep the warmth in and the chill out, you have a couple of options at your disposal. We have the classic curtains and blinds, which have their insulation perks, but only when fully closed. And then we have insulating window film, a more modern, energy-efficient solution that works without blocking natural light and doesn’t change your view or style.
So, which option is right for your home’s insulation needs? Let’s take a closer look at curtains, blinds, and insulating window film to see how each option performs and which one will keep your space at the ideal temperature.
Curtains
If you’re after a classic approach to keeping the warmth in (or the warmth out during the Summer), thermal curtains might be your go-to. Made from thick, layered materials, they’re excellent for trapping heat, especially in rooms where blocking drafts matters most, like bedrooms or living rooms. Just keep in mind, though, that to really work their magic, curtains need to stay closed, which can dim the room a bit.

Benefits:
- Blocks out drafts effectively.
- Comes in plenty of colours and patterns to match your style.
- Adds soundproofing, helping to reduce outside noise.
Limitations:
- Must be closed to insulate, blocking natural light.
- May not be as energy-efficient in rooms needing regular light and visibility.
- Requires regular cleaning to avoid dust build-up.
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Blinds
Blinds, especially the vertical options that we offer at Applied Products, have great flexibility for adjusting light and privacy. You can easily tilt them to control how much sunlight you let in, which makes them a practical choice for large windows or sliding doors. While blinds do offer some insulation benefits, they’re generally not as effective at keeping warmth in as insulating window film. However, they are a popular choice as they tick more boxes from privacy to aesthetics.

Benefits:
- Offers precise control over light and privacy.
- Wide range of styles and materials to suit different decor needs.
- Easy to clean and maintain, with replaceable components.
- Applied Products’ vertical blinds come in flame-retardant options, adding safety.
Limitations:
- Moderate insulation (they are less effective for retaining heat during winter than other options).
- May require regular dusting and cleaning.
- Limited impact on overall energy savings compared to window film.
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Window film
If you want to keep heat in without giving up natural light or views, insulating window film is a smart choice. Applied directly to your window, it adds a discreet layer of insulation that’s barely noticeable but highly effective. It’s perfect for energy savings and low maintenance, making it ideal for rooms where you want to keep things open and bright while still retaining warmth.
Don’t be thrown by the term “insulating either”, as window films have a dual purpose. Just as they keep heat in during the winter months, they also keep the cool air in during the summer, which means an ideal temperature all year round!

Benefits:
- Allows natural light in, keeping rooms bright and open.
- Reduces heat loss and helps lower energy bills.
- UV protection helps prevent furniture and floors from fading.
- Low maintenance and easy to clean.
Limitations:
- Professional installation is recommended for best results.
- May not suit those who prefer thicker, more visible window treatments.
- Initial investment can be higher, but the energy savings often make up for this over time.
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Best fit for specific needs
Each window treatment brings its own advantages, making certain options better suited for specific rooms or requirements. For example:
- Curtains: Ideal for bedrooms and living rooms where blocking out drafts and adding warmth is key. They’re perfect in spaces where privacy and noise reduction are also priorities, though they do limit natural light.
- Blinds: Suitable for multipurpose rooms or offices where adjustable light and privacy are important. Applied Products’ vertical blinds work well for large windows and sliding doors, offering practical insulation while letting in just the right amount of light.
- Window Film: The best choice for maintaining a bright, open feel while cutting down on heat loss. Great for living rooms, conservatories, and commercial spaces where visibility and energy savings are priorities. Insulating window film also minimises UV damage to interiors, making it perfect for sunny areas.
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Make the right choice for year-round comfort
Choosing the right window treatment for your space can make all the difference in comfort and energy savings. Whether you prefer the traditional insulation of curtains, the light control of blinds, or the sleek efficiency of insulating window film, Applied Products has the solution to meet your needs.
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WE OFFER ONE OF THE WIDEST RANGES OF HIGH-PERFORMANCE BLINDS & WINDOW FILMS IN THE UK…
If you need any help or advice on what types of window films are best for your house, company or office, don’t hesitate to get in touch; we’d love to help! Applied Products has a large range of specialist films and as partners with The 3M Company, we can help you transform your room into a comfortable and productive space whilst also making it much more energy-efficient.
Applied Products – [email protected] / 01792 895730
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