Premidoor Lift and Glide Patio Door 

PremiDoor™, the lift/sliding door from KÖMMERLING, lets you design very large openings, e.g. for the garden and terrace, just as you want it to be for maximum light. Living rooms can therefore open up into the garden, and terraces become living rooms. 
 
PremiDoor™ from KÖMMERLING is a genuine premium product. It has a captivating slim design, timeless character, and technical features including the best values in thermal and sound insulation, stability, weathertightness, and, of course, reliability and ease of operation. 
 
A great many design variants and unusual measurements – with sash sizes up to 3.0 m wide and 2.5 m high – provide the best you need for your own architecture. The sliding elements’ pleasantly quiet and smooth running is an additional special hallmark of the PremiDoor that was developed on the basis of a modern 70 mm profile system. 
Standard Specification 
 
168mm profile depth with internal beads 
111mm meeting style 
Black gaskets 
Stainless steel rollers on stainless steel track 
Glazing - 28mm sealed units - 6mm toughened Planitherm Ultra N - Stainless steel spacer and Argon 
Above 5401mm width - 30mm units - 8mm toughened Planitherm Ultra N - Stainless steel spacer and Argon 
1.1 Centre pane U Value 
1.3 Door U Value 
 
Installing across Dorset, Wiltshire, Hampshire in Poole, Bournemouth, Dorchester, Christchurch, Salisbury, Southampton and the New Forest 
 
"The new windows and glass roof are wonderful! They make an enormous difference to the house. The installers were efficient, polite, more than competent and cleaned up brilliantly after working incredibly hard each day. The products are excellent but the installers are what set the very high standards you achieve. I wouldn't hesitate to recommend Diamond and thank you for the enormously successful project"  
R9 Windows & French Doors,  
Bygone Sash Windows and Conservatory Roof -  
Sir & Lady Coleridge. LONDON SW13 
 
"Positive experience from initial contact to completion. No aggressive sales. Polite and professional with a friendly approach. Good knowledge of products & a keen eye for detail and craftsmanship. Excellent!"  
Bygone Sash Windows -  
Mr Davis. Blandford Forum 
 
"Sales process very efficient. Very satisfied with product quality. Fitting team helpful and professional"  
R9 Windows & Solidor Stable Door -  
Mr Fraser. Brockenhurst 
 
"We chose Diamond because they are authorised installers for Bygone heritage style sash windows. Even though they are based in Poole, they were happy to take on this job on the Isle of Wight and the MD visited the property personally both before and on completion of the job. Two installation teams attended and were clean, efficient, purposeful and paid very close attention to detail and to getting things right. It was clear they took great pride in their work. From this experience we would unreservedly recommend Diamond when quality of product, service and workmanship is key" Bygone Sash Windows -  
Mr & Mrs Cullum. Bembridge, Isle of Wight 
'Very reliable company. Good knowledge of replacing windows in a Conservation area. Friendly staff throughout whole process" Timber Windows -  
Miss Minns. Poundbury 
 
"First class service. Excellent product and workmanship, helpful and polite"  
Timber windows -  
Mr Minns. Poundbury 
 
'Diamond Home Improvements were excellent throughout. Their sales people and workers were of a very high standard"  
Fascias, Soffits & Guttering -  
Mrs Bell. Christchurch 
 
"The two fitters were a credit to the company. Clean, tidy, polite and the quality of workmanship and product is very good"  
Canopy Roof -  
Mr Smith. Poole 
 
"Fast experienced team, confident they could do the work. Exceptional cleanliness, good humour and very polite. Very pleased"  
Bi-fold Doors, uPVC Window and Solidor Front Door -  
Dr Campbell. Gosport 
 
"From first enquiry to completion the service was excellent. The standard of work, politeness of the contractors and overall work couldn't have been better"  
Conservatory, Bygone Windows and R9 French Doors -  
Mr & Mrs D'Albert. Ringwood