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Insulating a Cold North-Facing Window Using Clipglaze Secondary Glazing

North Facing Window

North-facing windows are well known for letting in cold air, especially when single glazed. In this home, a single-glazed north-facing window was causing persistent draughts, creating an uncomfortably cold room during the winter months. The homeowners wanted an effective, low-cost solution that they could easily install themselves—without the expense or disruption of replacing the entire window.


The Challenge: A Draughty, Single-Glazed North-Facing Window

The window suffered from:

  • Cold draughts entering the room

  • Significant heat loss, especially during winter

  • Chilly indoor temperatures, made worse by its north-facing orientation

  • A desire to retain the existing window while improving insulation

  • A need for a DIY-friendly, budget-conscious solution


The Solution: Clipglaze Secondary Glazing with 4mm Polycarbonate

To eliminate the draughts and improve comfort, the homeowners chose Clipglaze secondary glazing, paired with 4mm clear polycarbonate sheets—all supplied by Omega and cut to size for a perfect fit.

Key features of the installation:

  • Made-to-measure 4mm clear polycarbonate, cut by Omega using the customer’s measurements

  • White Clipglaze edging, which creates a secure, airtight seal around the panel

  • Simple DIY installation, using toggles to clip the glazing in place

  • Easy-to-trim edging, which the customer cut to size using heavy-duty scissors

Omega provided full measuring guidance and fitting instructions, ensuring a smooth, hassle-free installation.


The Results: Dramatic Temperature Improvement

Once installed, the Clipglaze secondary glazing made a remarkable difference to the warmth of the room.

Mr Barrett Cross shared his experience:

“The difference in temperature is incredible. There is a 10°C difference between the two thermometers. This was taken on Sunday, 07/02/2021, during the ‘Beast from the East’ snowstorm in Surrey.”

A 10-degree temperature increase demonstrates the high insulating performance of Clipglaze and polycarbonate secondary glazing—particularly impressive during extreme winter weather.


Why This Solution Works for Cold, North-Facing Windows

Clipglaze secondary glazing is ideal for homeowners who need:

  • A cost-effective insulation upgrade

  • Minimal disruption

  • Better protection against draughts and heat loss

  • A DIY-friendly solution

  • Improved thermal comfort without replacing original windows

The airtight seal created by the Clipglaze edging and the insulating properties of the 4mm polycarbonate work together to significantly reduce cold air infiltration.


Looking to Insulate Your Draughty Windows?

If your home suffers from cold, single-glazed windows—especially north-facing ones—Clipglaze secondary glazing is a quick, affordable, and highly effective solution.

Visit www.omegabuild.com to explore our full range of secondary glazing options or contact us for measuring advice and personalised recommendations.