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UPVC (Un-plasticized Poly Vinyl Chloride) is extensively used in the building industry as a low-maintenance material, particularly in Ireland, the United Kingdom, in the United States and Canada. In the USA and Canada it is known as vinyl, or vinyl siding.

The material comes in a range of colours and finishes, including a photo-effect wood finish, and is used as a substitute for painted wood, mostly for window frames and sills when installing double glazing in new buildings, or to replace older single-glazed windows.

Other uses include fascia, and siding or weatherboarding. UPVC is known as having strong resistance against chemicals, sunlight, and oxidation from water.


Windows and doors are essential in any building, yet all too often incompetent windows and doors are being used in a home, making the home uncomfortable.

The answer to this answer is to install windows and doors that allow light into the home, but keep you comfortable and cosy, irrespective of the weather conditions outside.

We offer double glazing windows in Sligo and Donegal with over 30 years experience!

Benefits of Double Glazed uPVC windows and doors

It doesn’t matter whether it is adversely high or low temperatures outside, it will not interfere with your comfort inside the home.

If you still wanted to heat or cool your home, you’ll need less energy as temperatures generated inside will not escape to the outside double glazed UPVC windows and doors are virtually airtight.

Double glazed UPVC windows and doors are also very effective in keeping outside noise low. A special combination of glass panes can reduce the amount of noise further, thus making your home quiet.


Using UPVC windows will save on energy costs which will then lower the amount spent on heating or cooling your home. Windows fitted with either a single or double glazingkeep your homes heat regulated.If you still use an air conditioner or heater during extreme weather conditions, your energy expenses will be less. This is due to the fact because temperature transfer through UPVC windows and doors is limited. When using double glazing, very low ‘U’ values can be achieved, fulfilling the conditions stipulated by South Africa’s building regulations.


If you live close to busy highways, your home will be soothingly quiet with the knowledge that UPVC windows and doors have great external noise reduction, allowing you to relax. When fitted with double glazing, the window systems can achieve a Sound Transmission Class (STC) rating of 44 dB.


Windows and doors using UPVC will never require sanding, painting or varnishing. They will never rot or warp. This will leave you with more time to relax and enjoy life, and not have to spend hours caring after windows and doors.

Naturally you may need to wipe the windows with a soft cloth and standard household cleaner to remove any dust and dirt. The hardware will also need to be oiled once a year, but otherwise it is low maintenance.


UPVC windows and doors are made to last long periods of time. They are manufactured from special and high quality performance PVC. This means windows and doors made with UPVC are tough, sturdy and durable, keeping their polished looks for many years afterwards.

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