Orangeries and skylights fill your home with beautiful daylight, but they also invite intense heat, glare, and UV exposure.
When there is safe access to the outside from a flat roof, external window films offer the highest performance by stopping more heat before it enters the glazing system. This delivers exceptional cooling while preserving the bright, open feel of your space.
Virtually undetectable on the glass
Preserves the highest level of natural daylight
Excellent heat rejection without altering the appearance of your orangery
Around 15% greater heat‑gain reduction compared to Prestige 70
Often considered the sweet spot for orangery roof glazing
Strong cooling performance with generous light transmission
Darker, neutral appearance for enhanced glare control
Outstanding heat rejection for rooms that become intensely hot
Ideal when both cooling and visual comfort are priorities
The 3M Prestige Exterior range is one of the only film families on the market that carries extended 3M‑backed warranties specifically for sloping and horizontal glazing. Most exterior films are only warranted on vertical or sloping glass greater than 15 degrees above the horizontal. Prestige is engineered, and certified, for the demanding conditions of overhead installations.
This means you’re investing in a longer‑lasting, more reliable solution than typical exterior films, with performance and durability supported directly by 3M.
Many skylights and rooflights have self‑cleaning external coatings, which prevent exterior films from adhering properly. In these cases, an internal solution is required.
Designed for internal application where external coatings are present
Offers light levels similar to the Prestige 40 grade
Provides reliable heat reduction and year‑round comfort
Whether you’re cooling a sun‑drenched orangery or reducing glare from an overhead skylight, our glazing films deliver:
Noticeably cooler temperatures in summer
Reduced glare for more comfortable daytime living
Protection against UV fading
A clearer, more usable living space all year round
Heritage of conservatory window films
From the earliest glasshouses and Victorian conservatories, people have always loved the idea of a room filled with daylight. The reality has never been quite as gentle. As soon as large areas of glass were introduced, heat gain and glare quickly became intolerable, turning beautiful spaces into rooms that could only be used at certain times of day or certain months of the year. Homeowners tried blinds, curtains, roof sails, and every imaginable workaround, but each one blocked the view or changed the character of the structure. Modern window films are the natural continuation of this long story. They allow the architecture to stay exactly as intended while finally bringing comfort and control to a problem that has existed since the first glass rooms were built.
Internal films sit after the heat has already entered the glazing system. By the time the film absorbs or reflects the energy, much of the heat has already passed into the room. External films stop the energy before it enters, which is why they deliver stronger heat rejection and better comfort.
Most conservatory roofs cannot safely support the time and weight required for installers to work on them. Access equipment is often limited, and prolonged time on the roof can risk damage to glazing bars, seals, and decorative caps. Internal films avoid these structural risks entirely.
Prestige Exterior has a 10 year warranty on vertical glass and 7 years on sloped glass, but in practice it often lasts far longer. Many installations are still going strong after 14 years.
The film itself is rarely the weak point. Issues are usually caused by installation errors such as contamination under the film, edges cut too tight to the gaskets, or corners lifting over time.
Side glazing is easy and safe to access, so external films can be applied where they perform best. Modern spectrally selective films, such as 3M Prestige Exterior, provide excellent heat rejection without the mirrored look and without significantly reducing natural light.
Yes. Prestige Exterior is one of the only films warrantied for sloped and horizontal glass but it is not compatible with glass with self-cleaning coating.
No. Prestige Exterior cannot be used on glass with self-cleaning coatings such as Pilkington Activ™.
Yes. It blocks 99.9 per cent of UV, the main cause of fading.
Yes. Prestige Exterior is one of the only films warrantied for sloped and horizontal glass.
Interior Prestige is only suitable where external installation is impossible. For real heat and glare control, exterior Prestige is always better because it stops the heat before it enters the glass.
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