Manufacture of windows, entrance doors and sliding elements made of plastic, wood, wood-aluminium and aluminium in Meldorf.
Aldra Fenster und Türen GmbH
Meldorf (Schleswig-Holstein)New on Amplifa
About Aldra
Aldra Fenster und Türen GmbH, headquartered in Meldorf (Schleswig-Holstein), is a manufacturer of windows and doors and, as a family business, is active in its fourth generation. Products manufactured include windows, entrance doors, lift-and-slide and parallel-slide elements, burglar-resistant elements, emergency-exit and panic doors according to DIN EN 179 and DIN EN 1125, as well as smoke and fire protection elements. Manufacturing is carried out in plastic (PVC, including bio-attributed PVC), wood, wood-aluminium and aluminium; all elements are custom-made to measure. The products are tested for stability, wind tightness and driving rain resistance and are separable by material type. Distribution takes place exclusively through the trade, with a nationwide network of around 800 specialist partners, including prefabricated house manufacturers, building elements dealers, joineries, building materials dealers and window specialist companies. Automated production lines are in operation at the Meldorf site, most recently commissioned in 2022.
- Site
- Meldorf
- Processes
- Window manufacturing from plastic, Window manufacturing from wood, Window manufacturing from wood-aluminium, Entrance door manufacturing from plastic, Entrance door manufacturing from wood, Entrance door manufacturing from wood-aluminium, Entrance door manufacturing from aluminium, Sliding elements (lift-and-slide and parallel-slide doors)
- Materials
- Plastic, bio-attributed PVC, Wood, Aluminium, Insulating glass, Plastic (PVC), Wood (FSC-/PEFC-certified), Wood-Aluminium
- Certificates
- RAL quality mark, FSC, PEFC, FSC (FSC C153681), PEFC (PEFC/04-31-3265)
- Founded
- 1888
- Industries
- Construction, Prefabricated house construction, Building elements trade, Joinery, Building materials trade, Window specialist companies
- 01
Raw materials: wood (FSC-/PEFC-certified), PVC and aluminium
- 02
Cutting and profile machining on automated production lines
- 03
Glazing (insulating glass)
- 04
Assembly of the elements including fittings and sealing systems
- 05
Quality inspection (stability, wind tightness, driving rain resistance)
- 06
Logistics with fixed route scheduling and distribution via the trade
Materials & Manufacturing
Plastic (PVC)
Material for windows and entrance doors with good thermal insulation values.
bio-attributed PVC
Sustainability-oriented variant of the plastic for windows.
Wood (FSC-/PEFC-certified)
Certified wood for windows and entrance doors on request.
Wood-Aluminium
Combination of wood on the inside and aluminium shells on the outside for windows and entrance doors.
Aluminium
Material for entrance doors and sliding elements with high weather resistance.
Insulating Glass
Multi-pane insulating glass for thermal insulation; factory-glazed windows since 1968.
Sites
Meldorf
DEHeadquarters and production
- Materials
- Plastic, wood, wood-aluminium, aluminium
- 2 automated production lines (commissioned in 2011 and 2022)
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Window manufacturing from plasticPlastic | – | – | – | – | Plastic (PVC), bio-attributed PVC |
| Window manufacturing from woodWood processing | – | – | – | – | Wood (FSC-/PEFC-certified) |
| Window manufacturing from wood-aluminiumAssembly | – | – | – | – | Wood, Aluminium |
| Entrance door manufacturing from plasticPlastic | – | – | – | – | Plastic (PVC) |
| Entrance door manufacturing from woodWood processing | – | – | – | – | Wood |
| Entrance door manufacturing from wood-aluminiumAssembly | – | – | – | – | Wood, Aluminium |
| Entrance door manufacturing from aluminiumAssembly | – | – | – | – | Aluminium |
| Sliding elements (lift-and-slide and parallel-slide doors)Assembly | – | – | – | – | Plastic (PVC), Aluminium, Wood, Wood-Aluminium |
| Emergency-exit and panic doors according to DIN EN 179 / DIN EN 1125Assembly | – | – | – | – | Plastic, Aluminium, Wood |
| Smoke and fire protection elementsAssembly | – | – | – | – | Plastic, Aluminium, Wood |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Automated production line | – | 2 | – | – | Meldorf |
Additional services
Reference customers
Quality
Aldra has carried the RAL quality mark since 1978; products are tested for stability, wind tightness and driving rain resistance. Certificates and test documents are made available to specialist partners via the Aldra-Experthek.
| Evidence | Meldorf |
|---|---|
| RAL quality mark | |
| FSC (FSC C153681) | |
| PEFC (PEFC/04-31-3265) |
History
- 1888
Foundation of the building and furniture joinery E. Albers & von Drathen
- 1920
In the 1920s, 'Aldra Fenster und Türen' becomes a brand for the first time; exports to the Netherlands, England and South America
- 1931
First large catalogue for windows and doors of E. Albers und von Drathen KG
- 1952
Partnership with VELUX; production of the first 50 VELUX roof windows in Meldorf
- 1960
Start of series production; production of standard windows made of wood
- 1968
Development of the 'Insulating Glass Window IV 68' – the first manufacturer to offer factory-glazed windows
- 1976
Foundation of 'Bauelemente aus Kunststoff GmbH' in Meldorf
- 1978
First award of the RAL quality mark
- 2005
Second phase of renewal of Aldra Fenster und Türen GmbH
- 2006
Opening of the 'Aldra-Marktplatz', the largest window and door exhibition in the north
- 2011
Expansion of production capacity through a new automated production line
- 2013
125th anniversary
- 2015
Presentation of the '76AD' series (76 mm installation depth)
- 2016
Aldra becomes a full-range supplier (plastic, aluminium, wood)
- 2017
Product launch of the '88MD' series for passive houses and sustainable construction
- 2020
FSC and PEFC certificates issued by ift Rosenheim
- 2021
Launch of the app 'Mein Aldra'
- 2022
Commissioning of a new automated production line in Meldorf