Processing directions

Check and assess the facing bricks on-site, upon delivery, to ensure that they comply with the product ordered. Each pallet of facing bricks will include the ‘declaration of performance’, containing all information relevant to the brick supplied. If the delivery does not comply, it should be reported prior to actual processing. If processed, the product will be deemed to have been accepted and approved.

Place the pallets on a dry subsurface, such as wooden beams, for example. Always protect the facing bricks from rain, ascending moisture and splashing dirt.

A facing brick does, in principle, have 2 processable headers (short side) and 2 processable stretchers (full length). If at least 1 header and 1 stretcher are free of defects, the facing brick is deemed to be adequate and can be used for brickwork. It is the brick-layer who decides which side of the facing brick will be displayed as the visible side.

Based on the declared compressive strength, and to attain more attractive brickwork, the bricks should always be laid with the frog side (an indent on the flat, smooth side) up. If a frog is not present, the brick should be laid with the smooth side facing up.

Mix the bricks simultaneously from several pallets (at least 3 pallets). In this process, the bricks should be taken from the pallets in a diagonal fashion. Open the following series of pallets as soon as the first starts to diminish, and mix the bricks with that. This will ensure that you obtain an on-going mixture of facing bricks.

Pay attention to the moisture level of the brick at the moment of processing. Bricks that are too dry or too wet will result in poor processability and/or poor adhesion of the mortar.

Lay bricks in such a way that mortar is prevented from splashing on the bricks. Mortar can only be removed using special products. Always remove cement rests before pointing.

We strongly advise against using a random acid to remove excess product. Always contact the manufacturer if you need advice.

Weather conditions
Use ‘overhanging plastic (± 20 inch) for protection’ of fresh brickwork at the end of the working day. This prevents damage to the brickwork, associated with rain. Such damage does, i.e., increase the risk of leaching, cement residue or bleeding, tremendously. Also ensure proper discharge of rainwater after bricklaying activities; do not allow rainwater to run across the façade.
-Prevent contamination of the brickwork. Protect the bottom of the brickwork from splashing water, if there is a risk for it.

Sintered Bricks
The melting process of additives during the baking process causes irregular glazing on the straight side of the facing brick: this is what we call sintering. This sintering can lead to bricks sticking together and being packed this way. Tapping the bricks lightly will arrange for them to loosen again. Bricks, in which a small or larger clay shell loosens because of this, can simply be turned and processed with the other side, when not wanted in the area of view. These phenomena are typical for sintering and are contributory to the character of the brickwork with sintered bricks.

The facing bricks of the KOLORO series have a cement coating.
Because of this, the bricks have some specific properties and the following guidelines may be useful for the correct and successful use in the brickwork:
A top layer/coating consisting of a cement-based mixture was put on the hand-moulded brick. The base clay (underground) may sometimes be visible (at the edges) and is specific to the product. It allows for the operator to afterwards apply this or omit it.
There are front and back sides to the bricks: all sides are coated as well as possible, on the long back side traces of the conveyor belt may be visible in the coating. It is a matter of choice whether the brickwork processing is done at random, or is done with the front or back sides of the bricks visible. The processing method must be agreed upon with the architect or builder before commencing with the brickwork.

Any bricks with 'too little' of coating on one side, should be used with the coated side to the front to avoid complaints retrospectively.
In wet conditions (e.g. during bricklaying or after rain) the coating colour can be different and/or faded. The original colour will become apparent and in accordance with the product, after curing and drying of the facing bricks. Also, newly opened packages may contain ‘moist bricks’ that are not yet the original colour.
The supplied facing bricks may still be slightly different from the presented samples. Facing bricks are a natural product; and the cement coating is thus also subject to colour differentiations as a result of the base clay used (each product is unique); and the weather conditions during the production process.
It may be necessary to provide customised mortar according to the data sheet of the facing bricks.

Purpose of the cement-coated facing bricks: after processing and with a customised joint a coated facade is obtained.
It is not recommended to perform a post-treatment with cement residue removers or perform any cleaning with high-pressure water.