How to block summer heat from windows?

Author: Prof. Kaci Breitenberg III  |  Last update: Sunday, April 6, 2025

10 ways to insulate windows for summer
  1. Add weatherstripping to your windows. ...
  2. Use window films to reflect heat. ...
  3. Invest in cellular shades. ...
  4. Purchase blackout blinds. ...
  5. Use draft snakes for window insulation. ...
  6. Insulate windows using bubble wrap. ...
  7. Upgrade to energy-efficient windows. ...
  8. Install insulating shutters.

How to stop heat from coming through windows in summer?

The most effective is keeping the heat from ever entering the home in the first place. Exterior shades, awnings, etc. are the best. After that would be any sort of reflective covering on the exterior of the window. Followed by films or coverings on the inside of the glass. Curtains, blinds, etc.

What is the best thing to block out heat from windows?

Solar shades or reflective window film are the best window coverings to block heat. Solar shades confine solar heat gain and block damaging UV rays while keeping a view of the outdoors. And the reflective window films reflect heat away from the windows so they cannot enter the interior.

How do I stop the heat from the sun from coming through my windows?

Blackout Window Blinds

Installing blackout blinds over your windows is a good way to prevent sun heat from getting in. Blackout blinds are opaque, so they don't let any light pass through. They are also available in a wide variety of colors and designs, so you can choose the right ones for your home.

Does putting plastic on windows help in summer?

In addition to keeping your home warmer during the winter, installing plastic insulation film over your leaky windows also works to keep cold air inside during the summer months. Putting window insulation film over windows is a smart idea if you want to reduce energy costs and keep out drafts during the colder seasons.

How To Block The Summer Heat From Entering Your Home! (Cools Down Your Home Instantly..)

Is it better to put plastic on the inside or outside of windows?

It 's better to put the plastic on the inside as it creates a tight seal so there is air between the plastic & the window & there is no condensation that builds up & it also holds up thru the whole winter where if you put it outside the window the tape that holds it would become dry & brittle in the cold & wouldn't ...

Does putting Saran Wrap on windows help?

What's the point of using plastic wrap? Plastic wrap is a great solution to save money when you have drafty windows. Plastic does an excellent job of keeping the heat from escaping if it stays intact.

How do you block sunlight from windows cheaply?

Cardboard and Aluminium Foil

Consider using cardboard and aluminium foil for a temporary and highly budget-friendly solution. Cut the cardboard to fit your window panes and cover it with aluminium foil to reflect sunlight.

How effective is bubble wrap on windows?

According to the HowToGoSolar, a free online resource geared toward educating homeowners on the benefits of solar power and energy efficiency, bubble wrapped windows show insulating improvements that are 50% better on single-glazed windows, cutting utility bills almost in half.

What is the best window covering to keep heat out?

Insulated cellular shades are typically considered to have the highest R-values of all window coverings. The air pockets in the honeycomb cross-sections act as insulators, increasing the R-value and reducing the conduction of heat through the window.

Does putting aluminum foil on windows keep the heat out?

Aluminium foil is both pliable, cheap and highly resistant to high temperatures. Spreading tin foil on any windows that receive direct sunlight can redirect the sun and heat away from your home.

How can I reduce heat gain through my windows?

Large west, east and north-facing windows should be shaded for increased energy efficiency. External shading is much more effective at keeping your home cool than internal blinds or curtains, as it stops the heat reaching the glass, but using both external and internal window coverings will provide maximum protection.

Does window insulation film work?

Yes, thermal window film is designed to keep heat out during hot months. Its reflective and absorbent properties play a key role in preventing excessive heat from entering your living or working space.

How to block heat from windows DIY?

  1. Heat Blocking Window Shades. Putting up window shades is a quick fix for solar overheating. ...
  2. Blockout Roller or Panel Blinds. ...
  3. External Window Shading. ...
  4. Bubble Wrap Window Insulation. ...
  5. Heat Reducing Window Film. ...
  6. Combining Multiple Methods.

What keeps heat out better, blinds or curtains?

Blinds Versus Curtains

In general, curtains are better for retaining heat in the home. However, by choosing a thermal blind you can reduce heat loss from your home by 20-40%, while thermal curtains reduce heat loss by just 25%-30%.

Which side of bubble wrap goes against the window?

Apply the bubble wrap while the window is still wet and press it into place. The bubble side goes toward the glass. To remove the bubble wrap, just pull it off starting from a corner.

Does bubble wrap keep heat out in summer?

Bubble wrap isn't just for shipping or popping. The plastic film containing multiple air pockets is another one of the best ways to insulate windows for summer.

What are the disadvantages of bubble wrap insulation?

Foil-faced bubble wrap is commonly used for ducts, since it's fairly easy to wrap around them. However, to take advantage of the radiant barrier, you have to create about 2″ of air-space between the foil and the duct, which is extremely difficult to do, especially on a curved surface.

How to stop heat from getting through windows?

How to stop heat coming through your windows in summer
  1. Seal gaps to block heat from entering your home. ...
  2. Use blinds to keep your home cool. ...
  3. Upgrade to double glazing. ...
  4. Use low emissivity glass. ...
  5. Try solar control glass. ...
  6. Use window films for heat reflection and UV protection.

How do I temporarily block sun on windows?

Consider hanging blankets over your windows and doors for a quick and temporary fix. Opt for quilted fabric as it works best due to its multiple layers that effectively trap heat. The challenge lies in keeping it securely in place, but you have various options, such as using a curtain rail, tapes, or hooks.

Does blackout window film work?

Blackout window film will completely block out the visible light spectrum. It won't, however, solve your summer overheating issues. If you want to stop anyone from being able to see within your home – and don't want to look out onto your outdoor space – use blackout film, by all means.

Is it worth putting bubble wrap on windows?

Bubble wrap is an inexpensive and easy way to insulate and reduce the amount of heat that escapes out your windows. Check out our videos for practical ways to keep your home warmer, drier and healthier this winter.

Does putting tin foil on windows work?

Windows magnify heat, so by using foil you're reflecting the sun off the window, sending it away from your home. 'Blocking your windows with tin foil will help to keep your rooms cooler in the heat as it reflects the heat back outside,' explains Adam Pawson, Head of Digital, Safestyle.

Previous article
Does vinegar damage a wood deck?
Next article
What is a tile backer?