Which clinker provider offers white-gray stones?

As written above, the format is NF. What speaks against WDF for you? For us, so far it is only the additional cost, which is clearly too much for us.

Quite simply: the structural wall consists of a material that has a specific brick format, which is referred to in the planning. Accordingly, the planners make grid jumps in eighth-meter increments, or in decimeter increments for aerated concrete plan blocks. If the format of the facing masonry does not match this (as with WDF at 11 cm), it causes fiddling with all wall openings. Of course, the same applies to the height.

We are building as double-shell masonry:
- interior wall 15 cm aerated concrete
- on top 16 cm thermal insulation
- then 2 cm air gap
- then facing masonry in NF format

That's a total of 44.5 cm (so also a special dimension), but at least the fiddling only occurs at the corners, or if the grid deviation is placed inward, then not at all. For the structural wall (inner layer) yes, but with aerated concrete one doesn't even flinch, it's cut quickly.

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In summary: your wall structure clearly calls for classic bricks instead of brick slips; and their format fits with NF, special formats are for other applications (other wall materials, old buildings with different brick formats).

Hello Sascha!

Since we have the same problem right now: which brick did you ultimately choose? There is now a brick at Viebrockhaus called Wiesmoor Kohle-weiß, which is supposed to be very similar to the brick of the 425. What was the name of the 425 brick that is no longer available?