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Double or Secondary Glazing is an excellent way of improving thermal and sound insulation in your home, and eliminates draughts.

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Double Glazing

Window repairs poundbury

New timber flush casement window with ultra-slim double-glazing, manufactured by Dorset Heritage and installed in a Grade II Listed 17th Century cottage in Affpuddle, Dorset

Where allowed, double-glazed timber sashes or casements can be manufactured to your specific requirements to match the original style of the windows in your home, and if the window profile is thick enough, ultra-thin, thermally efficient double-glazed units can be fitted into your existing sashes.

Combined with our draught-proofing solutions this can dramatically improve the heat insulation of your home, reducing your energy bills, improving sound insulation and making your home an even more cosy environment.

Dorset Heritage use very slim double-glazed units, which can be as little as 10mm in thickness, retaining the traditional feel of your period windows.

Secondary Glazin Dorset

Dorset Heritage will fit your new double-glazed units, hand-finished in our weather-resistant paint finish. As with all our new windows, they are manufactured using Accoya timber, which is guaranteed against rot for 50 years and has excellent dimensional stability.

Call Dorset Heritage today for your free no obligation survey on 01305 567013 or email

Seciondary Glazing
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Secondary Glazing

Secondary Glazing is an excellent alternative to double glazing, particularly in areas where double glazing is not permitted, for example in listed buildings and conservation areas.

Dorset Heritage is pleased to recommend and install the Protech Secondary Glazing System. Call us to arrange your free consultation.

Secondary Glazing Weymouth

Balanced vertical sliding secondary glazing installed by Dorset Heritage on a curved bay triple sash window of a 19th Century Listed townhouse.

Weymouth, Dorset

Secondary glazing offers many advantages:
  • Ideal for Listed Buildings and Conservation areas

  • Improved thermal efficiency and reduced heating bills

  • Eliminates draughts

  • Added security

  • Huge improvements to sound insulation

  • Increased comfort

The Protech Secondary Glazing System is a very high quality, professional system, manufactured from aluminium in a timber sub-frame, which provides stunning aesthetics with excellent thermal and sound insulation.

This Secondary Glazing System is available in a variety of styles to match your specific requirements, including Tilt-in Balanced Vertical Sliders, Horizontal Sliders, Hinged Units, and Lift-outs.

Secondary Glazing Dorset

The Horizontal Slider Secondary Glazing System is most commonly used with period casement windows, whether leaded or timber, where double-glazing is not permitted.

Secondary Glazing Weymouth

The Balanced Vertical Sliding Secondary Glazing System is mostly frequently installed in period listed properties. It is particularly suited to the refurbishment and upgrade of the nation's architectural heritage as this is the form of secondary glazing best suited to be used with sash windows.

Call Dorset Heritage today on 01305 567013 for your free consultation or email

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