Interior doors: How to recognise quality and differences

Interior doors are far more than just room dividers - they shape the character of a home and influence comfort, design and functionality. Anyone choosing a new door should therefore pay attention to more than just the appearance. Here you can find out which materials, structures and quality features are decisive for interior doors.

What types of interior doors are available?

The choice of interior doors today is greater than ever. Particularly popular are

CPL doorsParticularly resistant to scratches, knocks and moisture.
White doors: Timeless elegance with individual details such as millings or country-style profiles.
Veneer doors: Each door is unique with elegant surfaces made from real wood veneer.
Glass doors: Allow plenty of light into rooms and create an airy atmosphere.

JOKA has the right doors for every room and style - from classic to modern.

Discover JOKA doors

Eingangsbereich einer Wohnung, in dem zwei einbruchssichere Innentüren zu sehen sind.

The structure of an interior door: you should know these differences

The internal structure also has a significant influence on the quality of a door. Typical door leaf structures are:

Honeycomb insert: A lightweight construction made of cardboard in honeycomb form - ideal for doors with low loads.
Tubular chipboard web: Reinforcements made of tubular chipboard provide more stability.
Tubular chipboard (RSP): An almost solid but lighter board for high robustness and good sound insulation.
Full chipboard insert: The heaviest and most stable variant - perfect for high demands on sound insulation and resistance.

The more solid the structure, the better the sound insulation and durability.

Nahaufnahme einer Türklinge mit Smart2Lock Sicherheit,

Functional doors: when is sound insulation or damp room suitability worthwhile?

Depending on the use, special functional doors make sense:

Soundproof doors reduce disturbing noises and ensure more peace and quiet, e.g. in the bedroom or home office.
Climate-stable doors equalise differences in temperature and humidity, ideal between unheated corridors and warm living rooms, for example.
Damp-proof doors withstand increased humidity, perfect for bathrooms or cellars.
Fire and smoke protection doors: Prevent the rapid spread of fire and smoke gases.

JOKA also offers doors with special burglary protection.

Find out more about doors with burglary protection

Nahaufnahme des Türgriffs einer vor Einbruch geschützten Tür.

Matching doors for every style of living

Whether classic, modern or individual - JOKA offers a variety of doors in different designs, for example:

Loft doorsWith black glazing bars and glass elements for a modern look.
Design doors: With super matt surfaces, sanded and textured lacquers or a variety of wooden surfaces.

If you want to delve even deeper, the JOKA door catalogue offers many more inspirations on materials, technology and design.

To the interior doors catalogue

Detailaufnahme des Eingangsbereichs mit einer JOKA Tür, der in der Kontrastreich Wohnidee eingerichteten Wohnung.

Nahaufnahme eines schwarzen Stahlrahmens einer Lofttür, die das industrielle Design und die hochwertige Verarbeitung zeigt.

Important quality features for long-lasting doors

When buying a door, it is worth taking a look at details that may not be obvious at first glance:

Surface hardness: Scratch-resistant, hard-wearing surfaces extend the service life, especially when subjected to heavy use.
Edge processing: Cleanly finished and closed edges protect the door leaf from moisture and wear.
Stability: High-quality panels and solid door hinges ensure dimensional stability and a secure hold even after years of use.

Our door expert Roland Kruse presents the most important quality features again in the video!