For us, quality is not only on paper - it is the foundation of our daily actions.
Clear rules for clear results
Our Tolerances Manual creates transparency and reliability - for customers, partners and planners. It defines the valid dimensional and quality limits for handling flat glass products and serves as a practice-orientated basis for planning, production and evaluation.
For more security in detail - you can view and download our tolerance manual here.
General advice
Glass colour
The colour of glass - what you should know:
The colour of glass can have different effects depending on the area of use and the surroundings. It is therefore important to consider a few factors when selecting glaziers. These influence how the glass will look later - especially in terms of colour effect and light reflexion.
The following points play a role here:
- The basic colour of the glass (e.g. slightly greenish due to iron content)
- The type of PVB foil for laminated safety glass
- The viewing angle - glass looks different depending on the viewing angle
- The light - the effect changes depending on the weather or the position of the sun
- The brightness in the interior behind the glass
- Colours of walls or areas in the surroundings
Important:
Colour perception always depends on the specific installation situation. Due to the influencing factors mentioned, no guarantee can be given for colour uniformity or the optical perception as colour uniform. We therefore expressly exclude any bond for colour deviations.
Please contact us - we will advise you on which glazier best fits your project.
Product information
Loft systems
Dimensional deviations for doors in accordance with DIN 18360
The dimensional tolerances for doors (especially exterior and interior doors made of metal) result from several standards and guidelines, depending on the component, installation condition and function.
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1. reference standards for doors
Standard / set of rules Contents
DIN 18360 General requirements for metal construction work
DIN EN 14351-1 Product standard for windows and exterior doors (dimensional tolerances)
DIN 18202 Tolerances for buildings - Carcass openings
DIN EN 12519 Definitions of terms for windows and doors
Ift Rosenheim guidelines Technical guidelines for control and version
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2. production dimension tolerances (door leaf, door frame)
➤ Door leaf (metal / steel / aluminium):
Dimensional range (width/level) Permissible dimensional deviation
≤ 1000 mm ± 1.5 mm
> 1000 mm to 2000 mm ± 2 mm
> 2000 mm ± 3 mm
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➤ Door frame:
Frame dimension (e.g. frame outside) Tolerance (EN 14351-1)
Level and width ≤ 1500 mm ± 1.5 mm
> 1500 mm to 2500 mm ± 2 mm
> 2500 mm ± 3 mm
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➤ Diagonal deviation (rectangularity):
Door size (door leaf or frame) Permissible diagonal deviation
Up to 1000 mm max. 2 mm
Up to 2000 mm max. 3 mm
Over 2000 mm max. 4 mm
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3. installation tolerances (assembly tolerances)
These tolerances apply after the door-sets have been built in.
Feature Permissible difference
Level and lateral position in the building structure ± 3 mm (individual panel), ± 5 mm (overall element)
Joint thickness to brick work ± 2 mm
Joint thickness to adjacent doors ± 1 mm for visible joints
Door stop (flatness) ≤ 1 mm over 1 m
Installation height (top level) ± 5 mm, for system constructions ± 3 mm
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4 Functional tolerances
➤ Door closing behaviour / hermetic sealing:
- The door must not grind or jam - regardless of the dimensional tolerance!
- Gaskets must be in functional contact
- Closing gap uniform, usually:
o 3 ± 1 mm top / lateral
o 5 ± 1 mm at the bottom (from the -) (depending on the floor structure)
➤ Torsion (deformation of the door leaf):
Door height Max. permissible torsion (according to EN 1121)
up to 2200 mm ≤ 4 mm
over 2200 mm ≤ 6 mm
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5. tolerance example for a typical door system
Dimensions according to plan:
Carcass opening: 1010 × 2135 mm
External door frame dimensions: 990 × 2115 mm
Door leaf dimensions: 960 × 2090 mm
Permissible differences:
Component actual dimension Tolerance range
Frame width 990 mm ± 2 mm 988 - 992 mm
Door leaf height 2090 mm ± 2 mm 2088 - 2092 mm
Joint to wall 10 mm planned 8 - 12 mm
➡ Conclusion: Structural elements are within the permissible range if all values are within these ranges.
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6. advice on the version
- Stricter requirements apply to automatically opening doors and emergency doors (e.g. in accordance with DIN EN 16005, EN 179, EN 1125)
- Dimensional deviations must not lead to functional impairments
- Deformation due to temperature (e.g. solar radiation) must be considered in the plan (e.g. shadow gap, choice of seal)
Checklist: Dimensional deviations for doors in accordance with DIN 18360
1. production dimension tolerances
Structural elements Dimensional range Tolerance
Door leaf ≤ 1000 mm ± 1.5 mm
Door leaf > 1000 mm to 2000 mm ± 2 mm
Door leaf > 2000 mm ± 3 mm
Door frame ≤ 1500 mm ± 1.5 mm
Door frame 1500-2500 mm ± 2 mm
Door frame > 2500 mm ± 3 mm
2nd diagonal deviation (rectangularity)
Door size Max. Max. difference
Up to 1000 mm ≤ 2 mm
Up to 2000 mm ≤ 3 mm
Over 2000 mm ≤ 4 mm
3. installation tolerances
Tolerance criterion
Level/side position in the building structure ± 3 mm (individual panel), ± 5 mm (total)
Joint thickness to brick work ± 2 mm
Joint thickness to adjacent doors ± 1 mm (visible)
Door stop (flatness) ≤ 1 mm / 1 m
Installation height ± 5 mm, for systems ± 3 mm
4 Functional tolerances
Function Permissible value
Closing gap top/ lateral 3 ± 1 mm
Closing gap bottom (from the -) 5 ± 1 mm
Torsion up to 2200 mm ≤ 4 mm
Torsion over 2200 mm ≤ 6 mm
Mirastar
Advice Pinholes
Small dots (pinholes) are unavoidable with the Mirastar product. These can be recognised when viewed against a light background and do not constitute grounds for complaint. The glass is almost opaque due to the thickness of the mirror effect. The effect can change due to changes in lighting conditions.
Excellent standards - certified and traceable
For us, quality and sustainability are not a promise, but a proven reality. Our certificates in the quality management (ISO 9001) and energy management (ISO 50001) ranges confirm our continuous commitment to efficient processes, responsible use of resources and the highest product standards.
Transparency you can rely on - you can download our certificates here.