Heritage Units2025-06-05T11:44:44+00:00

Heritage Units

Supply and Installation of Westcountry Heritage Units. These super slim, sealed glass units, offer a modern solution to an old problem when it comes to glazing heritage, period and listed buildings. Providing excellent performance without compromising a buildings appearance.

westcountry heritage logo

These super slim units provide excellent performance without
compromising on appearance and are the ideal solution for Heritage, Period and Listed properties.

Heritage units are measured from inside edge to inside edge and are available in 4mm, 6mm and 8mm depths. For comparison standard IGU’s usually measure 16mm or 20mm depth.

Produced to order with an authentic appearance, slim sightlines
and narrow unit cavities, Westcountry Heritage Insulated Glass Units will
compliment listed properties and historic buildings with restoration
and replication requirements.

Sympathetically providing the benefits of double glazing to older
properties without compromising a buildings aesthetics these units
are produced at our Plymouth location and to each clients
exact requirements for supply only or supply and installation.

Heat loss comparison

The diagram above shows how much heat is lost through windows and doors in a modern day property. The red areas show prior to standard double glazing being installed. The right hand image shows the drastically lower levels of heat loss. Heritage and Period building will experience similar heat loss and installation of our Heritage Units expertly fitted in traditional, crafted wooden frames can have similar impact on heat loss.

Heat loss from any building is measured in by a U value and is expressed in W/m”k. The lower the U value the better the insulation provided by the relevant material. As a comparison, the U value for a typical pane of single glazing is 5.8W/(m2k)

The table below shows the some of the variations available within our Heritage units.

Heat loss from buildings is measured by U value and is expressed in W/mk2k.

The lower the U value the  better the  insulation provided by the relevant material.

For comparison, the U value for a typical pane of single glazing is 5.8W(m2k)

Heritage Unit U Value Table

Spacer bars are an integral part of our Heritage units. They separate the two panes of glass and because we use Warm Edge spacer bars, condensation is virtually eliminated. All our Heritage units are available with Black or White Spacer bars.

All our Heritage units are available with Black or White Spacer bars.

Location, location, location –

The location of your property will determine which combination of glass types will provide the best benefits to your property. Our expert team are on hand to advise on the best Heritage Units for your property’s location.

Combinations include:

  • Laminated 4.4mm – Interlayer between two sheets of glass. Benefits; Reduce UV rays, noise reduction, burglar deterrent
  • Restoration Glass – Sympathetically reproduced glass period glass that compliments the ascetics of older buildings Benefits; Increased insulation in older properties.
  • Solar Control Glass – Helps to keep the building cool in warmer weather, whist still maintaining a very low U value. Benefits; Helps prevent the greenhouse effect while maintaining good insulation properties.
  • Low E Glass – This is a heat retention glass which helps reduce heat loss through the double glazing. Up to 73% of the suns heat will pass through the glass -Planitherm Total Plus. Benefits; Good light transmission and heat gain while maintaining a reduced level of heat loss.

PLEASE NOTE ALL OUR HERITAGE UNITS ARE GUARANTEED FOR 2 YEARS SUBJECT TO CORRECT GLAZING INSTALLATION  AS PER OUR GUIDELINES. EXCLUDES BREAKAGES

FAQ’s

Important Notice:

The information provided in our FAQ section is intended as a general guide only. For detailed and specific enquiries, we strongly recommend contacting your local Cornwall Glass branch. Our team will be happy to assist you with accurate and personalised information.

Do you offer heritage units with anti-scratch glass?2025-05-22T14:28:45+00:00

Yes, We can apply a film to the glass to make it scratch resistant

Do heritage units provide good thermal insulation?2025-05-06T10:12:23+00:00

Yes, heritage units provide excellent thermal insulation, reducing heat loss and improving energy efficiency.

Can heritage units reduce noise?2025-05-06T10:12:24+00:00

Yes, heritage units offer good acoustic insulation, helping to reduce noise from outside.

Are heritage units available with decorative options?2025-05-06T10:12:26+00:00

Yes, heritage units can be customised with various decorative glass options.

Do heritage units comply with building regulations?2025-05-07T11:37:33+00:00

Yes, our heritage units comply with relevant building regulations and standards.

Do you offer heritage units with laminated glass?2025-05-07T10:42:22+00:00

Yes, we provide heritage units with laminated glass for added safety and security.

Do you offer heritage units with solar control glass?2025-05-07T10:44:34+00:00

Yes, we provide heritage units with solar control glass to reduce heat gain.

Do you offer heritage units with self-cleaning glass?2025-05-22T14:40:42+00:00

Yes, we can apply an easy-clean coating to the glass

Do you offer heritage units with tinted glass?2025-05-07T10:47:50+00:00

Yes, we provide heritage units with tinted glass for added privacy and solar control.

Do you offer heritage units with frosted glass?2025-05-07T10:48:29+00:00

Yes, we provide heritage units with frosted glass for added privacy.

Do you offer heritage units with patterned glass?2025-05-07T10:49:03+00:00

Yes, we provide heritage units with patterned glass for decorative purposes.

Do you offer heritage units with fire-resistant glass?2025-05-07T10:49:30+00:00

Yes, we provide heritage units with fire-resistant glass for added safety.

Do you offer heritage units with bullet-resistant glass?2025-05-22T14:41:33+00:00

No, Unfortunately not.

Do you offer heritage units with UV protection?2025-05-07T10:50:38+00:00

Yes, we provide heritage units with UV protection to reduce fading of interiors.

Do you offer heritage units with anti-reflective glass?2025-05-07T10:51:02+00:00

Yes, we provide heritage units with anti-reflective glass for improved visibility.

Do you offer heritage units with privacy glass?2025-05-07T10:52:00+00:00

Yes, we provide heritage units with privacy glass for added discretion.

Do you offer installation services for heritage units?2025-05-06T10:06:19+00:00

Yes, we provide both supply-only and supply-and-installation services.

Can heritage units be used in modern buildings?2025-05-07T06:24:21+00:00

Yes, heritage units can be used in both modern and traditional buildings to achieve a specific aesthetic.

What is the maximum size of heritage units you can produce?2025-05-07T06:25:22+00:00

It depends on the cavity you have

4mm Cavity, we can produce a maximum size of 600mm x 600mm.

6mm Cavity, we can produce a maximum size of 800mm x 800mm.

8mm Cavity, we can produce a maximum size of 1000mm x 1000mm.

 

Do heritage units comply with building regulations?2025-05-07T06:26:54+00:00

Yes, our heritage units comply with relevant building regulations and standards.

Can heritage units be used for windows and doors?2025-05-07T06:27:52+00:00

Yes, heritage units are suitable for both windows and doors.

Do you offer heritage units with laminated glass?2025-05-07T11:02:22+00:00

Yes, we provide heritage units with laminated glass for added safety and security.

Can heritage units be used in conservation areas?2025-05-07T11:03:46+00:00

Yes, heritage units are designed to meet the requirements of conservation areas.

Do you offer heritage units with solar control glass?2025-05-07T11:40:41+00:00

Yes, we provide heritage units with solar control glass to reduce heat gain.

Can heritage units be used in commercial buildings?2025-05-07T11:04:26+00:00

Yes, heritage units are suitable for both residential and commercial buildings.

Do you offer heritage units with self-cleaning glass?2025-05-22T14:42:05+00:00

We can apply an easy clean coating to the glass.

Can heritage units be used in heritage-listed buildings?2025-05-07T11:04:57+00:00

Yes, heritage units are specifically designed for use in heritage-listed buildings.

Do you offer heritage units with tinted glass?2025-05-07T11:41:10+00:00

Yes, we provide heritage units with tinted glass for added privacy and solar control.

Can heritage units be used in historic buildings?2025-05-07T11:34:48+00:00

Yes, heritage units are ideal for use in historic buildings to maintain their original appearance.

Do you offer heritage units with frosted glass?2025-05-07T11:42:09+00:00

Yes, we provide heritage units with frosted glass for added privacy.

Can heritage units be used in museums?2025-05-07T11:35:18+00:00

Yes, heritage units are suitable for use in museums and other cultural institutions.

Do you offer heritage units with patterned glass?2025-05-07T11:15:05+00:00

Yes, we provide heritage units with patterned glass for decorative purposes.

Can heritage units be used in churches?2025-05-07T11:35:39+00:00

Yes, heritage units are ideal for use in churches and other places of worship.

Do you offer heritage units with fire-resistant glass?2025-05-07T11:14:44+00:00

Yes, we provide heritage units with fire-resistant glass for added safety.

Can heritage units be used in schools?2025-05-07T11:36:03+00:00

Yes, heritage units are suitable for use in schools and educational institutions.

Do you offer heritage units with bullet-resistant glass?2025-05-22T14:42:36+00:00

No , Unfortunately not.

Can heritage units be used in libraries?2025-05-06T10:03:10+00:00

Yes, heritage units are ideal for use in libraries and other public buildings.

Do you offer heritage units with UV protection?2025-05-07T11:43:15+00:00

Yes, we provide heritage units with UV protection to reduce fading of interiors.

Can heritage units be used in government buildings?2025-05-07T11:36:40+00:00

Yes, heritage units are suitable for use in government buildings and offices.

Do you offer heritage units with anti-reflective glass?2025-05-07T11:43:58+00:00

Yes, we provide heritage units with anti-reflective glass for improved visibility.

Can heritage units be used in hospitals?2025-05-07T11:37:00+00:00

Yes, heritage units are suitable for use in hospitals and healthcare facilities.

Do you offer heritage units with privacy glass?2025-05-07T11:44:28+00:00

Yes, we provide heritage units with privacy glass for added discretion.

Can heritage units be used in hotels?2025-05-07T11:23:27+00:00

Yes, heritage units are ideal for use in hotels and hospitality venues.

Do you offer heritage units with switchable glass?2025-05-07T11:24:03+00:00

Yes, we provide heritage units with switchable glass for dynamic privacy control.

Can heritage units be used in restaurants?2025-05-07T11:24:40+00:00

Yes, heritage units are suitable for use in restaurants and cafes.

Do you offer heritage units with low iron glass?2025-05-07T11:24:56+00:00

Yes, we provide heritage units with low iron glass for high clarity and transparency.

Can heritage units be used in retail stores?2025-05-07T11:25:19+00:00

Yes, heritage units are ideal for use in retail stores and shopfronts.

Do you offer heritage units with anti-bacterial glass?2025-05-07T11:25:40+00:00

Yes, we provide heritage units with anti-bacterial glass for hygiene-sensitive environments.

Can heritage units be used in office buildings?2025-05-07T11:25:57+00:00

Yes, heritage units are suitable for use in office buildings and commercial spaces.

Do you offer heritage units with heat-strengthened glass?2025-05-07T11:26:21+00:00

Yes, we provide heritage units with heat-strengthened glass for added strength.

Can heritage units be used in sports facilities?2025-05-07T11:29:24+00:00

Yes, heritage units are ideal for use in sports and recreational facilities.

Do you offer heritage units with anti-glare glass?2025-05-07T11:29:53+00:00

Yes, we provide heritage units with anti-glare glass for improved visibility.

Can heritage units be used in transportation hubs?2025-05-07T11:30:09+00:00

Yes, heritage units are suitable for use in airports, train stations, and bus stations.

Do you offer heritage units with anti-fog glass?2025-05-07T11:44:57+00:00

Yes, we provide heritage units with anti-fog glass for clear visibility.

Can heritage units be used in cultural heritage sites?2025-05-07T11:30:44+00:00
    • Yes, heritage units are ideal for use in cultural heritage sites to preserve their appearance.
Do you offer heritage units with anti-scratch glass?2025-05-07T11:45:49+00:00

Yes, we provide heritage units with anti-scratch glass for added durability.

What are heritage units?2025-04-22T13:52:38+00:00

Heritage units are super slim, sealed glass units designed for heritage, period, and listed buildings.

What makes heritage units different from standard IGUs?2025-04-22T13:52:39+00:00

Heritage units have slim sightlines and narrow unit cavities, making them ideal for maintaining the aesthetic of older buildings.

What thicknesses are available for heritage units?2025-04-22T13:52:39+00:00

Heritage units are available in 4mm, 6mm, 8mm, 10mm, 11mm, and 12mm depths.

What is the U-value of heritage units?2025-04-22T13:52:39+00:00

The U-value varies depending on the glass type and cavity size, but heritage units offer improved insulation compared to single glazing.

Can heritage units be used in listed buildings?2025-04-22T13:52:39+00:00

Yes, heritage units are designed to meet the requirements of listed buildings and conservation areas.

What types of glass are available for heritage units?2025-04-22T13:52:39+00:00

Options include clear glass, Pilkington K, Planitherm Total, and more.

Do heritage units provide good thermal insulation?2025-04-22T13:52:40+00:00

Yes, heritage units provide excellent thermal insulation, reducing heat loss and improving energy efficiency.

Can heritage units reduce noise?2025-04-22T13:52:40+00:00

Yes, heritage units offer good acoustic insulation, helping to reduce noise from outside.

Are heritage units available with decorative options?2025-04-22T13:52:40+00:00

Yes, heritage units can be customised with various decorative glass options.

What is the lead time for heritage units?2025-04-22T13:52:41+00:00

Lead times vary depending on the project; please contact us for specific details.

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