FAQ
About Silestone® 
1. What is Silestone®?
Silestone® is the registered trademark of 
a quartz surface manufactured by Cosentino® 
in Spain. It is the leading natural quartz 
agglomerate in the market and one of the 
pioneering brands. 
3. What is the composition of Silestone®? 
What percentage of resin and quartz does 
it contain?
Silestone® is composed of natural quartz
(crystalline/amorphous silica), high density 
polyester resin and pigments. The percentage 
of natural quartz is up to 94% and vary per 
colour. Some colours contain recycled content 
(ECO, HybriQ+ & Stellar Series). The remaining 
% are polyester resins, which function as 
binders and pigments to give the desired 
colour. The percentage of natural quartz 
marks the colour granulometry. The larger 
the quartz grains are, the less resin you need 
in the colour. (Important: these variations 
in composition have no impact on the 
properties of the product).
4. What differentiates a quartz 
agglomerate from an acrylic resin? 
They use either a mineral component (ATH, 
derived from bauxite), and a different resin 
(acrylic resin and not polyester or polyurethane).
It is important to know that the percentage 
of resin containing products like Solid Surface
is around 35% being much higher than 
Silestone®. An advantage of these type of 
products is that they are thermoformable, 
flexible and have a ''seamless'' appearance. 
However, its resistance to scratching and 
heat performs lower than a Silestone quartz 
countertop. Solid surfaces can be repaired, 
but it is expensive to do so and the result is 
never the same.
There are many advantages which include:
demanding quality standards at the 
production level, lifetime warranty, an 
excellent distribution network accross 
Canada, low level of back order colours, the 
urban showrooms “City center,” and many 
more.
In terms of specific product advantages, 
the magnificent properties of our Suede 
mae finish (very problematic for other 
producers), extensive colour palee, and 
jumbo extra-large format and thicknesses 
(1/2", 3/4" and 1-1/4") would be some 
examples.
5. What makes Silestone® different from 
other quartz agglomerates?
At the corporate level, Silestone® is the 
world’s leading manufacturer of quartz 
agglomerates with more than 30 years of 
experience behind them.
2. Where can Silestone® be used?
Due to the dierent thicknesses available 
and its large format, Silestone® can be used 
for the following projects: Kitchen and bath 
countertops, backsplash and full height 
backsplash, shower walls, bath podium and 
custom sink, shower base, wall cladding, fire 
mantle, stairs, furniture covering, table 
plateau & custom furniture.
Contact your local store to confirm feasibility 
once you get special requests as some 
options may not be available in your area.
6. What are the advantages of 
Silestone® against marble and / or 
granite?
Certain exotic natural stones and marbles 
can be more sensitive to scung / scratches 
than the quartz compound. Another dierence 
is the greater flexibility of the quartz compound, 
which allows it to be beer suited to the 
movements of the structure in large spaces.
It has greater resistance to punctual impact 
without cracking and chipping. Silestone® 
has a lower porosity (absorption of liquids) 
so it is easier to clean, prevents stains and 
is not aected by moisture (untreated natural 
stone can change colour or stain from salt 
residues). The marble, in particular, also 
presents less resistance than granite and 
Silestone® to abrasion, acids and chemical 
agents. It is also important to emphasize the 
consistency of Silestone® colours versus 
variability of the appearance of the natural 
stone, even though a certain variation in tone 
and granulometry can be found in Silestone® 
due to the fact that quartz is a natural product. 
There is also the standardization of quality 
in Silestone®. These two points help to assure 
the client that what he or she is going to 
install in his or her house in both properties 
and aesthetics. 
7. When was Silestone® created?
In 1990. It was recently celebrated its 30th
anniversary (in 2020) and launched at Home 
Depot in 2000.
8. How is Silestone® made? 
(fabrication process)
for 24 hours naturally. Then the slab passes 
a calibration process to obtain the desired 
thickness (which guarantees a constant 
edge profile thickness and leveling) and 
eliminates excess of material and impurities 
with discs and diamond cuers. The last step 
is polishing (abrasive) to obtain the polished 
/ glossy finish and behind it, the slab passes 
a final exhaustive quality control.
9. What makes one colour more 
expensive than another? - Reasons for 
various price groups.
The production cost. The ability to obtain the
desired colour or the cost of the necessary raw
materials. A good indicator is, again, 
granulometry. The more discreet the grain 
(more uniform and smooth), the more resin 
content it contains and, therefore, the more 
expensive its production. Example: White Zeus 
VS White North.
10. What are the dierent price groups?
Depending on where you are located, there 
are either 6 or 7 price groups available, from 
AA to F. The group A/AA colours being the 
entry level point.
11. How large is a slab of Silestone®?
There are two slab dimensions: standard and 
jumbo. The standard format is about 53 x 119 
inches and the jumbo is about 62 x 126 inches.
12. Are there both sizes in all colours?
No. The jumbo format is produced on a special 
line and, therefore, not available for all colours. 
The selection of colours is strategic. Ask your 
Home Depot for more information.
13. And the thickness?
All Silestone® colours are available in 1/2'', 
3/4'' and 1-1/4'' thicknesses. That being said, 
the Home Depot program with set price for 
each group is based on a 3/4'' thick oering 
for the West and 1-1/4'' for the East side of the 
country, exception made for the Group AA 
which oers a limited number of 3/4'' thick 
colours. Ask your designer for additionnal 
information and availability.
14. Are the three thicknesses equally 
strong and flexible?
No. The thicker the material the more resistant 
to flexion and impacts. The difference between 
the thicknesses of 3/4 and 1-1/4 is minimal. 
15. How many colours are available?
Over 50 colours and finishes are available in 
your core program. They represent the best 
sellers actually available in Canada. Additional 
colours are available. Contact your local store 
for more information and availability.
Upon receiving the raw materials from our 
suppliers a 1st quality control is performed 
by the laboratory. Once approval is obtained 
the arid crystalline/amorphous silica is 
stored in silos. The resin and the pigments 
pass to other special deposits. All these 
materials are transported to the mixers 
where they are homogenized according to 
the formula introduced /desired colour, 
obtaining the mass. The mass passes a 
control of weights to assure good distribution. 
Then there is a system of aspiration of 
vacuum and simultaneous vibration which 
extracts all the air to obtain the compaction 
sought. From there it is pressed in a hydraulic 
press of 100 tons. Then it is baked and cooled 





