Röben Portland LDF Anthracite Smooth Clinker Brick

Its hallmark is the smooth surface of the face and the color of mute blackness, obtained by engobing.

It fits modern buildings and minimalist projects, but can become an inspiration to create interesting objects in other styles. In addition, it is an excellent material for clinker chimneys, especially if you choose a dark roof covering, e.g. black or gray. Just like the other Röben bricks, it is characterized by longevity, durability and resistance to external factors, including water, frost, wind and fire.

Main characteristics:

1. The unusual color of muted black
2. Smooth surface of the face
3. Perfect for minimalist projects
4. Extended LDF format (290 x 115 x 52 mm)

TECHNICAL DATA

Dimensions of a brick LDF: 290 x 115 x 52 mm

The total area of perforation: >15% ≤ 50%

External wall: 21 mm

Bulk density of brick NF i LDF: 1500 kg/m³

Bulk density of brick VNF i VLDF: 2300 kg/m³

Bulk density of brick NF SP: 1650 kg/m³

Bulk density of brick 7-S: 1900 kg/m³

Bulk density of brick XLDF: 1600 kg/m³

Strength of brick NF, NF SP, LDF, XLDF : ≥35 N/mm²

Strength of brick 7-S, VNF, VLDF: ≥45 N/mm²

Absorbability: to 6%

Frost resistance: category F2

Acid resistance: +

Alkali resistance: +

Coefficient of thermal conductivity of brick NF, LDF, XLDF: P = 50% - 0,37 W/mK, P = 90% - 0,43 W/mK

Coefficient of thermal conductivity of brick NF SP i 7-S: P = 50% - 0,45 W/mK, P = 90% - 0,51 W/mK

Coefficient of thermal conductivity of brick VNF, VLDF: P = 50% - 0,72 W/mK, P = 90% - 0,79 W/mK