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Windows / Double Glazing

At GTS we understand that choosing your new windows & doors can be a stressful experience. Our aim is to make the entire process as simple as possible at every stage. 

From your initial inquiry, right through to any after sales service you may require, we will remain focused on your needs and not ours.

We do believe our service is second to none, and as a supplier of Liniar A rated windows & doors, you can be assured that you are getting one of the strongest,
most thermally efficient systems available.

Liniar A rated window and door systems have been tested and proven to perform in all kinds of extreme conditions.
Liniar are the ultimate choice for today's environment. This range of windows, doors and conservatories has been exclusively designed. This includes a suite of matching casement, tilt & turn, entrance doors and French doors.



Today, PVC-u is the most widely used window material and its market share is constantly growing. Liniar offers a large number of window and door systems each designed with impressive technical innovations and manufactured with their lead-free compound.  All products are fully accredited by the British Board of Agreement (BBA), the UK construction industry’s leading independent authority on building products quality. This means your double glazing design has been thoroughly tested for structural strength and air and water tightness.

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Double Glazing • Windows • Doors • Conservatories • Building Products & Services
Kettering •  Corby • Rothwell • Desborough • Market Harborough • Wellingborough • All Surrounding Areas