6 reasons why Kömmerling is installer’s uPVC system of choice

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With multiple bases of operation worldwide and over 100 years’ experience in the sector, for those still wondering, we’ve put together 6 reasons why Kömmerling is every installer’s uPVC system of choice.


Kommerling O70 window profile used to make our uPVC windows.

A+ energy ratings easily achievable


Thanks to a combination of five-chambered profiles (two more than the standard) and Planitherm Total Plus glass integration, Kömmerling windows and doors from Alex Trade easily meet the minimum energy efficiency levels in the UK. All will achieve ‘C’ ratings as standard, but can in special cases reach as high as ‘A+’ for homeowners concerned with stamping out draughts for good.

Certified to BS7412, BS7413, PAS023, PAS024, and BS7950


Alex Trade provides Kömmerling windows and doors supplied to meet the following certifications: BS7412, BS7413, PAS023, PAS024, and BS7950. All help to signify that the products abide by and meet the necessary build-quality, security, and energy level standards.

Over 40 individual colour tones


Alex Trade Frames recognise that consumer tastes and personal preferences are everchanging, and so readily offer installers Kömmerling windows and doors in a choice of 40 distinct finishes. From authentic woodgrain tones to simple Cream, White, and Anthracite Grey, all bases are covered, whether you’re installing in a residential home or office building.



Engineered using lead-free uPVC


Kömmerling windows and doors from Alex Trade primarly come engineered in Kömmerling’s O70 Gold system which itself is extruded using their exclusive lead-free compound Greenline. During a time when all eyes are on the fenestration industry to reduce energy consumption and preserve the environment, Greeline successfully ensures that nature’s resources are impacted much less.

Steel reinforced for improved strength


Easily rivalling aluminium window and doors systems, O70 Gold is supplied to installers fully reinforced using steel. This helps improve the overall strength of the uPVC window and doors’ frames, allowing them to accommodate much heavier glass panes when necessary.

23% of all UPVC frames installed in Europe are Kömmerling


With 25 years’ experience supplying windows, doors, and conservatories to tradesmen in the North West ourselves, we’ve built up quite the relationship with Kömmerling, knowing their products like few other suppliers to achieve the highest quality possible. This, combined with our optional next day frame delivery service, means letting you get ahead of competitors every time.



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