As we gear up for bonfire night, a home improvement expert is advising homeowners to take steps to safeguard their windows.

While we all love the spectacular firework displays and bonfires, they leave behind soot, ash, and smoke residue that can stick to windows, potentially causing lasting damage if not properly dealt with according to a home improvement leader.

“Every year, we see homeowners struggling with the aftermath of bonfire night,” says Ian Richardson of GFD Homes. “What most people don’t realise is that soot and ash particles from fireworks and bonfires carry acidic compounds that cling to window surfaces, frames, and seals.

“Once these particles settle, especially in November’s damp conditions, they can embed into the glass and frames, leaving behind a cloudy film that becomes harder to clean the longer it sits.

“In some cases, this residue can even cause etching on the glass, which creates tiny surface damage that permanently dulls the window’s clarity.”

Fireworks display
Bonfire Night can be a very dangerous time of year, so it’s important to stay safe (Image: Getty Images/iStockphoto)

Richardson also warns of a greater risk: “If a stray firework smashes or cracks a window, the cost of replacing it starts at around £250 for double-glazing, with the average replacement price being £600. And the damage doesn’t stop there – if a firework enters the home, the risk to interiors, furniture, and safety is far greater, potentially leading to thousands in repair costs.”

Close and Lock Windows

Make sure all windows are firmly closed and locked to prevent any accidental openings, which might let in ash or stray fireworks. If possible, secure any vents as well to stop smoke infiltration. The cost of replacing just one broken window can vary between £250 and £600, depending on its size and the type of glass.

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Install Temporary Protective Film or Use Cling Film

Putting up a temporary protective film or even a layer of cling film can act as a barrier against soot and ash. This measure is particularly useful for properties close to where fireworks displays or bonfires are expected. Over time, soot and smoke can etch into the glass and cause it to become dull. For double glazing, the average glass replacement cost is around £500.

Move Valuable Items Away from Windows

Clear any valuable or delicate items near windows, especially in rooms that overlook firework display areas. This prevents possible damage from vibrations or, in the unlikely event of a stray firework, shattered glass. Replacing damaged interiors can add up, with carpet repair alone ranging from £100 to £400 and furniture repair often costing £200 to £1,000 depending on material and extent.

Use Heavy or Blackout Curtains

Draw heavy curtains or use blackout curtains to add an extra layer of protection. Not only does this reduce noise, but it also helps block out smoke and protects against minor impacts.

Clear Nearby Flammable Items Outdoors

Make sure there’s nothing flammable near your windows outside. Move garden furniture, BBQ grills, or decorative items away from windows to prevent fires from stray sparks. If a fire spreads, window frames and siding may need replacing, with costs from £1,000 to £5,000 depending on materials.

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