Dekko adds three-head Graf welder to its seamless line-up

November 11, 2026

Dekko Window Systems has invested in a new SL3-FF-TV three-head Graf seamless welder from Haffner, giving it a production set-up no other UK fabricator can match.

The new machine joins Dekko’s existing SL5-FF-TV five-head Graf welder. That makes Dekko the only fabricator in the UK with Graf seamless welders that can weld UK style windows. This includes arrow head and reverse butt welding for internally glazed windows.

Sales Director Steve Collett said: “It’s great to get our new Graf welder in place. A few weeks ago, the space was completely clear. Today, it’s a very different story. We’ve worked with Graf technology for longer than most, so this felt like the natural next step. The five-head machine has been brilliant for us and the three-head gives us extra capacity just as demand for seamless keeps climbing.”

For customers, the biggest gain is peace of mind. With two machines on the factory floor, seamless production carries on even if one welder needs attention.

“It’s the first thing installers ask,” said Steve. “They want to move onto seamless, but naturally they ask what happens if one machine goes down. That’s a fair concern when they are trying to build their business and need to know we’ll deliver week in, week out.

“By bringing in a second seamless welder, we’re removing that risk altogether. If one welder goes down, the other keeps running.”

The investment supports Dekko’s Infinity flush casements, which give clean timber-look corners with none of the grooved joints found on standard welded frames. It also backs Infinity composite doors, which pair Graf-welded seamless construction with smart-ready Kubu security as standard.

The latest investment builds on Dekko’s earlier adoption of Graf Synergy technology, which enabled the company to launch the world’s first fully seamless uPVC window.

“Seamless is what we’re known for,” said Steve. “Putting serious money into machinery like this is how we protect that reputation and give our customers something they can’t get anywhere else.”

The backing of parent company Inwido has also been instrumental, added Steve. “This investment is a clear sign of the confidence and support Inwido continues to show in Dekko. It allows us to invest in the right machinery and ensure our customers can grow with complete confidence in our capability.”

For more information visit www.dekkowindows.com or call 0161 523 1474.