Trinity Glazing's range of Energy Rated Windows have been designed to minimise heat loss, absorb heat from the sun and eliminate air leakage... the result is savings on home heating bills and reduced energy waste.

Energy Rated Windows are manufactured using the highest-spec Low Iron and gas filled and Warm Edge Spacer. All windows are tested and certified by the British Standards Institute and approved by the Energy Saving Trust scheme.

The energy efficiency of windows is measured by Window Energy Ratings. WER's take into account the performance of both frame and glass known as a whole window ratings, and are determined by three main factors:

Thermal Transmittance

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Measures heat that is lost through the overall window - energy efficient windows reduce heat loss; therefore, a lower u-value window means better energy efficiency.

Heat Gain

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Measures the amount of heat that is absorbed from the sun - energy efficient windows transmit solar heat back into the room (helping to lower home-heating usage)

Air Leakage Loss

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Measures heat loss that occurs as a result of general air leakage - an energy efficient frame and glass will help reduce air leakage.

UPVC Windows Edinburgh
UPVC Windows Edinburgh


Trinity Glazing products meet the stringent sustainability demands of the current climate without compromising on quality or performance.

Waste Reduction

Trinity Glazing's innovative manufacturing processes virtually eliminate any material wastage. Our recycling facility has the capacity to reduce the amount of waste material going to landfill by up to 55 tonnes per week. In fact, we ensure that all our frames feature up to 80% recycled material.

Carbon Emissions

Trinity Glazing windows are energy efficient by design; multi-chambers within the profile system significantly reduce heat and energy loss from inside the home. By selecting Trinity Glazing frames, you could reduce frame carbon emissions by up to 70%.

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Energy Efficiency

Our products are designed for maximum energy efficiency. By specifying Trinity Glazing, you can be sure of only the highest standards in performance, thermal efficiency, and sustainability. Select triple glazed windows for whole window U-values as low as 0.8 W/m2K.

Lead Free

Lead-free products are in high demand in today’s current climate, especially in PVCu products. All Trinity Glazing products are therefore 100% lead free, ensuring the frame retains its long-term appearance and performance.

Frame Longevity

Innovative design and development ensure that our windows feature 100% virgin PVCu skins on all external surfaces. This ensures a longer-term performance without compromising on overall quality or appearance. Trinity Glazing products are covered by an exclusive 10-year performance guarantee.

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Safety & Security

Innovative design and manufacturing techniques ensure that Trinity Glazing frames are tough, robust, and durable. All frames are fully welded for a strong and secure overall frame structure, and greater consistency of finish. Stringent quality control procedures and checks take place at regular intervals in the production process to ensure that a strong, secure, and quality product is produced. All windows are internally glazed for extra security. This means that the glazing bead faces the interior of the home and therefore cannot be removed from outside the house, keeping your glazing unit safely and securely in place. For additional safety, glass can be specified as toughened or laminated.

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