Thinking of installing an eye-catching span of glass doors? Take a look at what to consider when planning for a high-quality setup

A large, three-panel set of IDSystems’ theEDGE2.0 sliders installed in an extension to a period home in Herefordshire. The 7,495mm (W) x 2,409mm (H) system features panels approx 2,498mm wide, fitted with solar control, security laminate glazing and PAS 24 approved locks

Agood glazed door system will provide you with that coveted connection between inside and out, offer great sightlines and elevate your home’s style, while meeting the performance values you’re after. When it comes to glass door setups, you get what you pay for. So, specifying a quality product from a trusted supplier is essential. We’re investigating how to select a quality glazed bifold or sliding door system that’s right for your home and project budget.

What makes a quality glazed door?

Don’t expect to get a good quality, stylish door at a bargain basement price. If the cost seems low, there’s likely to be a reason for it – particularly when it comes to sliders or bifolds with super-slim framing. “When you’re going down to really narrow profiles, at the cheaper end of the market you could be risking the quality and rigidity of the door,” says Matt Higgs, managing director at Kloeber.

Other key factors include the energy performance of the door, wind and watertightness, security, stability, durability of finishes and the quality of the running gear. For instance, do you simply want to meet Building Regulations standards for efficiency, which sets a notional U-value of 1.2 W/m2 K for glazed doors in new houses. Or do you want to go above and beyond that to suit your ambitions for a low-energy home?

Bear in mind, too, that the cheapest products might seem to offer good performance out of the box, but may not deliver over the long-term. Comprehensive warranties from trusted suppliers are a strong indicator on this score, but you should back that up by visiting showrooms and past projects to try the doors out in person. Ask to see certification to prove the products’ credentials, too.