Colours and Glazing

Powder Coating - Superior Light Transmitting Low-E Glass - Eco Friendly Double Glazing - And More.


Powder Coating

To guarantee the highest quality paint finish all of our aluminium products are polyester powder coated to Qualicoat standards by our glazing systems suppliers.



Ral Colour Chart - click for larger view

Click To View All Colours.


We can offer an extensive range of standard and non standard RAL colours and textured/metallic paint.

For a perfect finish, colour coordinated handles and hinges are also possible to ensure a seamless blend between frame profiles and accessories.

View All Colours
Rated 5.0 out of 5 Stephen Jackson

Thank-you Marlin Windows for a great job! You designed and built all the windows in our renovation project including sliding doors and bi-folds with care and consideration. From our first contact with Adrian through to the final fitting, the service was exceptional, no request was too much trouble...

...I have no hesitation in recommending Marlin, we are very pleased with the results.


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Document Downloads

File Type Document Description Download Document
Adobe PDF Smart Colours & Finishes IMS037CG.201606 Download (1.5 MB)
Adobe PDF Glass Appearance Download (48 KB)
Adobe PDF GGF Glass Quality Of Vision Download (363 KB)
Adobe PDF GGF Standard For Toughened Glass Download (489 KB)
Adobe PDF Spontaneous Glass Breakage Download (36 KB)
Adobe PDF Glass External Surfaces Download (82 KB)

All our glazing is fully compliant with the latest June 2022 Building Regulations (Document L).

energy efficient Guardian glass building in extreme desert climate


Our glass is exclusively manufactured by Guardian Glass, chosen by us because of the exceptional natural daylight light transmission, energy bill reducing thermal insulation and solar control.

Glass that has been used in some of the most energy efficient homes on the planet.

children behind ClimaGuard Low-E glass window

ClimaGuard® A+ Low E GLASS

Our standard glass used in our windows and doors is ClimaGuard® A+ low emissivity (Low-E) glass.

A glass and frame combination that will help protect your home from the extremes of external heat and cold while enabling reduced energy consumption and cost. It can also protect from sunlight, reduce noise and improve safety and security.

It’s exceptional light transmitting properties, superior to other Low-E glass, can maximise natural light and enhance the views from your home.

Glazing that meets new building regulation standards aimed at reducing energy demand and cutting carbon emissions introduced in June 2022 with the highest performance requirements in terms of transparency and solar heat gain.

Guardian ClimaGuard® A+ allows solar heat to pass through the glazing, which is then retained within the building by the low-E coated glass. This means a positive effect on your heating costs during winter months and improved comfort levels in your home.

For more information on this and other glass options speak to our knowledgable technical advisors or see

For maximum large clear view windows with minimum small heat loss

Combine ClimaGuard® A+ Low-E glazing with Marlin Windows and Doors.

Rated 5.0 out of 5 Co Parker

Really good company. Made a large aluminium window for us and the whole thing couldn't have been better. Excellent all round


Sunguard 70 37 Glazing


Protect delicate furniture from the sun's harmful rays.

Read more about the Sunguard 70 37 glazing solution here

Rated 5.0 out of 5 Richard Little

Brilliant service. Fantastic products. Excellent throughout.


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glazing bars


Our flat astragal bars can be positioned over cavity duplex spacer bars and are bonded to the external faces of the sealed unit to authentically replicate the appearance of Art Deco style glazing.

Available in 25mm and 41mm widths the aluminium astragal bars can be powder coated to match the frame colour and be applied in horizontal or vertical layouts and cruciform grids to give the appearance of multiple sealed units.

glazing bars


If you require lead work details to sealed units we are able to recreate existing designs using traditional materials and techniques including antique aged lead work with soldered joints.

Lead work can also be combined with coloured and patterned films, bevels and obscure glass to produce unique designs to suit contemporary properties or to create a traditional stained glass effect.

"our builder said they were the best supplier and fitter they had ever used"
Mrs Nellist Haworth, Yorkshire


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Call 01535 603909