Have you got a question? Let us answer it.
We take all questions seriously. That is why we have put together the most
commonly-asked questions here for you.
Are KERAWIL paving clinkers frost-protected?
KERAWIL paving clinkers are completely frost-protected. The bricks are fired at over 1,110° C, which creates high density and hardness. Frost protection and other quality criteria are regularly tested by an independent laboratory.
Do paving clinkers lose their colour?
The colours of KERAWIL bricks are produced by the firing process. No colour pigments are added.
Can I use salt in winter on the paving clinkers?
KERAWIL bricks are resistant to acids and lyes. You do not need to worry about using salt on the surface in winter. In spring, you may find that there are salt deposits on the surface of the brick. The weather and the rain will clean the bricks and wash away the salt.
Do paving clinkers have to be laid with a joint?
All paving materials must be laid with a joint. Paving clinkers require at least a 3 mm joint when laid, in order to avoid lifting edges due to the exceptional hardness.
What thickness do I need?
For terraces and doorways, we recommend a 52 mm thickness. For surfaces in private use which are to accommodate a vehicle (e.g. a car or an MPV), we recommend a 63 mm thickness. The critical factor in the long durability of a paved brick surface is the quality of the superstructure and substructure.
Can I clean paving clinkers with a high-pressure washer?
You can clean KERAWIL paving clinkers without any worries using a high-pressure washer.
Greenish bloom on paving clinkers. How can I get the bricks clean again?
The bloom can be cleaned off easily using water, or you can treat it with a proprietary algae remover.
Do I have to clean and maintain paving clinkers regularly?
Kerawil bricks are an easy-care product. If laid expertly and exposed to sun and rain, KERAWIL bricks should not need any special care. If laid in completely covered areas, for example in carports, terraces etc., then it is recommended to wash the surface down occasionally, possibly adding an acetic acid (vinegar) cleaning agent.