Frame at the ceramic field

Ceran fields are now almost standard in German kitchens. Nevertheless, many consumers do not know that there can be structurally significant differences in glass ceramic cooktops. In this context, the role of the ceramic hob is not clear to everyone. Below, therefore, everything worth knowing about ceramic hobs and the framework.

Ceran field and glass ceramic hob - the same?

A ceramic field is actually the brand product of Schott AG, whose glass ceramic plates are used for many well-known hobs. Colloquially, under a ceramic hob but a hob with Heizspirale or halogen spotlights (shine when switching immediately red) understood. In our guide, we refer the term "ceramic field" to all glass ceramic fields with different heating techniques:

  • Ceran field with induction coil
  • Glass ceramic with halogen or heating spiral
  • Ceran hob with gas (gas on glass, gas under glass, liquid and natural gas)

Structural differences

Here, glass ceramic panels are offered in different structural design:

  • with frame
  • without frame

Glass ceramic panels without frame

Ceran fields without frames are intended to be sunk in the kitchen countertop. The surface of the glass ceramic hob then closes flush with the worktop after insertion. However, the installation is a bit more demanding. The cut-out must be perfectly measured, as even the smallest deviations are noticeable when looking at the ceramic hob. In addition, a corresponding groove must be milled with exact depth in the plate. In addition, such a Ceranfeld is placed on a special tape.

The sealing of a frameless ceramic hob

The sealing of Cerandfeld then takes place laterally (the gap between the worktop and hob). If you were to apply silicone to the underside, you would not be able to cut it out when you removed it from the ceramic hob. Frameless glass ceramic hobs can not be retrospectively provided with a frame. In addition, this frame is also grounded in conventionally framed ceramic fields.

The ceramic hob with frame

In contrast, the installation of a glass ceramic hob with a border is much easier. Although it must be cut exactly here, but slip off something or have to improve something, that is later hidden by the frame of the ceramic hob. Also, the sealing between the frame and kitchen worktop is much easier. There are ceramic hobs, which are accompanied by a special seal.

Silicone or special seal

We would also recommend such a gasket for framed cooktops where the manufacturer considers the use of silicone sealant. Basically, of course, heat-resistant silicone is suitable. But it is not an elegant solution. After all, every silicone joint is a maintenance joint. But this is often forgotten in a hob. Over the years, this increases the risk of liquids seeping through and reaching the electrical components.

The gluing of frame and glass ceramic plate

If the frame has detached from the glass ceramic plate, you can not easily re-glue it. The manufacturers use special adhesives with just as special properties:

  • very high bond strength for a thin and durable bond
  • absolutely insensitive to heat
  • Insensitive to various liquids and cleaning agents
  • yet flexible to compensate for the extension of the frame with the Ceran field zero expansion

In particular, the latter point is what causes problems with conventional adhesives. In addition to the poor thermal conductivity, the most striking feature of glass-ceramic is that it does not contract on cooling and does not expand when heated, so it has zero expansion. Since the frame expands very well, the adhesive used must be correspondingly flexible, but also bring all the other properties mentioned.

Tips & Tricks

If you want to buy a frameless ceramic hob, you should always arrange for a cheap installation by the seller if possible. This will ensure that the gap dimensions actually fit. Otherwise, it is the warranty obligation of the manufacturer or installer to correctly install the hob in a new plate.

Video Board: Ceramic Design Frame