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FAQ
 
Before asking us a question, ensure that it has not already been answered by consulting the list below.
 
What is Belgian Blue Stone?
Considered as one of the best construction materials in Europe, Belgian Blue Stone is used as much indoors as outdoors for cladding, paving, window sills, stairs, counter tops and sundecks for swimming pools but also for tiled floors, pavements, roadsides etc.

Where can Belgian Blue Stone be bought?
Our network of stonemasons and retailers will advise you on our products.
The stonemason is a craftsman who will create to order creations intended for both indoors and outdoors (countertops surfaces, stairs etc.). The retailer sells a finished product, mainly tiles.


Can Belgian Blue Stone be used outdoors?
Yes, its low porosity makes this material resistant to frost and pollution.

Is Belgian Blue Stone slippery?
Some finishes are recognised for their non-slip qualities: Agripa, Flamed, Hammered, Sclype, Combed, Chiselled, Frosted, Old cut. Small tiles or paving stones (15 x 15; 20 x 20; 22 x 11) with a slippery surface (eg. Milled, Sawn) or aged (Patio flagstone and Patrimony Flagstone/Paving block) can also be suitable since the number of joints makes the flooring non-slippery.

What is the difference between Belgian Blue Stone and Asian stone?
The Asian stones have neither the same appearance, nor the same technical properties as Belgian Blue Stone. They do not meet the same quality criteria and rarely conform to the specifications of the projects.

What is the maximum recommended size for Belgian Blue Stone?
For tiles: 60 x 60 cm
For paving blocks: 20 x 20 cm
For slabs: 3 m 80 x 2 m
 
How can I get rid of grease marks on my terrace?
Grease marks will eventually fade due to the cleaning action of the sun and rain. This can take from several weeks to several months depending on the nature and quantity of the grease. For quicker results, you can use water with 2 spoonfuls of ammonia or a good detergent.

The blue stone tiles in my home have several scratches. What can I do about this?
Superficial micro-scratches due to movement and furniture, are normal and over the years will contribute to give a beautiful patina to the paving. To nourish the stone and reduce micro-scratches, you can treat your tiles with a natural soap (olive oil based soap) diluted in water. A shiny appearance can be regained using wax and a floor polisher equipped with a suitable pad. You can hire this type of machine to do this yourself, or contact a contractor.

My terrace is paved in Vieux Soignies. After several years, the colour is fading how can I restore it and recover a slightly darker colour and a satin like shine?
The satin like finish of the paving surface has been subjected to the effects of rain (slightly acid ph). To give it this appearance, you will need to use a floor polisher equipped with a brown pad (scotchbrite type) with water. You can hire this type of machine to do this yourself, or contact a contractor

Could you suggest a cleaning product for doorsteps and window sills in Belgian Blue Stone?
All you need to do is clean the stone by nourishing it from time to time with a small amount of natural soup (olive oil based soap).

How can I remove traces of adhesive from Belgian Blue Stone?
You can use a little washing powder. For large areas, there are a number of specialist products available. Please do not hesitate to contact us if you would like more information on these products.

I would like to renovate old bluestone (paving, window sills…) which have become rough due to rain (acid ph), what must I do?
Stonemasons or specialised companies can mill the stone in order to restore its appearance.
 
I would like to install a Belgian Blue Stone courtertop in my kitchen, is this recommended?
Of course. Simply choose one of the following matt finishes: Sawn, Blue milled, Natura light, Natura blue, Blue honed, Flamed, Conception.
If you would like to keep the original colour of these finishes, you should treat the surface with a good oil-repellent product. Please do not hesitate to contact us for more detailed information on these products.
You can also protect the stone with a little vegetable (olive) oil, or even a linseed oil/turpentine solution (50/50). Do not forget to remove the excess with a cloth. The surface will be dry and not sticky to the touch, but the finish will darken. If an acid product is spilt on the stone, you must then wipe with an oiled cloth to nourish the attacked spot.


What is the minimum recommended thickness for installing Blue Stone flooring outdoors?
3 cm: Terraces, alleys, pedestrian areas, roads not suitable for motor vehicles
5 cm: Garage entrances, pavements or places which may occasionally be accessed by motor vehicles
8 cm: Roads regularly used by motor vehicles, market places, places for delivery and emergency vehicles.


How to avoid grey patches on the tiles following repointing?
Mop with a damp floor cloth as many times as necessary to remove any trace of cement after repointing. If traces remain, you can use a very weak acid solution (best to perform a patch test before treating the whole surface). Caution, do not use acid on a shiny finish, since it risks dulling it.

How do you install blue stone on a facade?
The installation of a Belgian Blue Stone covering on the façade can be carried out by cementing/sticking in the case of small items (eg. Dado), or by a system of stainless steel staples for items with a thickness greater than or equal to 3cm.

General question
Maintaining Belgian
Installing Belgian Bluestone
Brochures

Please feel free to download our brochures,  they will provide you with lots of information about Belgian Blue Stone.  
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