DIY Home Insulation Tips That Actually Work

Insulating your home doesn't always require professional help. With a few simple DIY hacks, you can enhance comfort, reduce energy bills, and stay cosy during colder months.

Make sure you regularly inspect your insulation and sealing efforts to ensure they remain effective. Even small gaps can lead to significant heat loss over time.

Seal Air Leaks Around Doors and Windows

Gaps around doors and windows are major culprits of heat loss. Use weatherstripping or foam tape to seal these leaks effectively. For a more budget-friendly option, consider using a door snake, such as a rolled-up blanket or fabric tube, placed at the bottom of doors to block drafts.

Using door snake for home insulation→

Apply Window Insulation Film

Window insulation film adds an extra layer of protection against heat loss. Simply apply the film to your windows and use a hairdryer to shrink it tight. This method is particularly effective for single-glazed windows.

Apply plastic over windows→

Install Reflective Foil in the Attic

Attics are prime areas for heat escape. Installing reflective foil can help reflect heat into your living spaces, providing a more comfortable environment. Staple the foil sheets to your attic roof rafters to maximize heat retention.

Seal your attic air leaks→

Use Bubble Wrap as Temporary Double Glazing

For a cost-effective solution, apply bubble wrap to windows using tape. The air pockets in the bubble wrap provide insulation, reducing heat loss.

Insulate your windows with a bubble wrap→

Add Insulation to Water Heater Pipes

Wrap your water heater pipes with foam sleeves to prevent heat loss and reduce the risk of freezing. This simple step can improve energy efficiency and ensure a steady hot water supply.

Insulate hot water pipes→

Install a Chimney Balloon

If you have a fireplace, a chimney balloon can prevent heat from escaping when the fireplace is not in use. Inflate the balloon inside the chimney flue to create an airtight seal. Remember to remove it before lighting a fire.

Put a chimney balloon→

Use Thick Curtains or Thermal Linings

Hang heavy curtains or add thermal linings to existing ones. This helps keep the warmth inside and the cold out, especially during the night.

Use energy-efficient window coverings →

Install Foam Board on Patio Doors

For patio doors that aren't frequently used, consider installing rigid foam board over them during colder months. Cut the board to fit and slip it into the doorframe to reduce heat loss.

Add foam boards to patio doors→

Plug Drafty Vents

Check areas where dryer and bathroom vents exit the house. Seal the outside edges with silicone caulk to prevent air leaks and keep critters out.

Using caulking to prevent air leaks→

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Naman Bajaj
September 16, 2025
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