Period and heritage windows are beautiful and timeless features we’re fortunate to have in abundance here in Scotland. But do you know how to protect stained glass and leaded windows? Read on to find out.

While stained glass and leaded windows were built to last, these intricate works of art require proper care to maintain their appearance and structural integrity. And regular cleaning plays a vital role in preserving them and preventing costly repairs. Here’s why professional maintenance is essential.

Keep vibrant colours alive

Dirt, dust, and grime are the enemies of vibrant colours and intricate designs. And leaded panels (as opposed to modern sheet glass windows) have lots of crevices for particles to accumulate. In areas with high humidity or pollution—common in Scotland’s urban centres and coastal regions—these particles can combine with moisture to form corrosive deposits. Regular cleaning removes these harmful substances before they cause permanent damage to the glass or lead.

Prevent cracks and weakening

Stained glass windows are composed of small, delicate pieces of glass joined by lead. While the lead provides flexibility and strength, it can weaken over time, especially if it’s burdened by layers of grime. Trapped dirt can expand and contract with the extreme temperature changes we experience in this part of the world, increasing the risk of cracks. A consistent cleaning routine ensures the glass and its supporting framework remain in good condition.

Check for potential problems

One of the biggest advantages of professional cleaning is the ability to spot problems before they escalate. During cleaning, experts can identify signs of wear, such as loose lead joints, hairline cracks, or deteriorating putty. Addressing these issues early is far more cost-effective than dealing with extensive repairs down the line.

Use a gentle touch

Cleaning stained glass windows requires a gentle touch and specialised knowledge. Harsh chemicals, abrasive tools, or incorrect techniques can cause irreparable damage. Professional cleaners use safe, eco-friendly solutions and tools designed specifically for delicate surfaces. They also have the expertise to navigate hard-to-reach areas and work with intricate designs without compromising their integrity.

By investing in professional maintenance, you can ensure your stained glass and leaded windows remain a vibrant and integral part of your property for many more decades, even centuries.