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Why Iso
Paint Roof coatings ? |
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Roof
coatings are exposed to nature’s forces on
a daily basis
One classifies weathering influence into:
- Physical factors:
such as insulation (heat), cold (frost),
rain and dew, wind and dust
- Chemical factors:
such as air pollution, smoke, exhaust
gases (acids and salts), as well as organic
materials and ozone
- Biological factors:
such as plants (mosses, fungi, lichens),
animals (insects) and micro-organisms (bacteria,
viruses)
To give a roof lasting protection, it needs the
right roof coating material. The most important
properties of a good roof coating are:
1: Lasting flexibility / Elongation at tear
/ Tensile strength
These properties are very important so that the
material can expand in heat and cold. All Iso Paint
roof coatings are based on 100% pure acrylate. This
binder has lasting flexibility.
In Europe it is unfortunate that 70% of the roof
coatings are made of “Styrene Acrylate.”
Styrene acrylate contains the softener thalate.
Thalates can not only be carcinogenic but are also
leached out after 3-4 years. The styrene acrylate
then turns hard and inflexible. That is why styrene
acrylates are totally unsuitable for roof coatings.
One should only use these for façade or internal
coats of paint as they are not subject to high loads
there.
The ISONIT roof coating with its elongation at tear
of 197% was rated as HIGHLY ELASTIC.
2: Water permeability / Water absorption
The material for roof coatings should be water repellent
so that water can run off and does not soak into
the coating material. Because: if a roof coating
absorbs too much water, you will have the ideal
basis for algae and fungi. These then damage the
stability of the roof foundation and at the same
time accelerate the weathering process.
If 100 grams “ISONIT Roof Coating” is
placed in a water basin for 24 hours, the paint
absorbs 5 grams of water = 5% water absorption!
If 100 grams “Normal Roof Coating” is
placed in a water basin for 24 hours, the paint
absorbs 25 grams of water = 25% water absorption!
3: Adhesive strength
The material for roof coatings should be
able to adhere to many types of bases, because good
and long-lasting adherence means long durability.
4: UV and weather resistance
The material for roof coatings should be UV and
weather resistant so that the roof looks good and
receives long-term protection against weathering
influences.
Outdoor weathering tests with ISONIT roof coatings
show: Even after 2 years in Magdeburg’s industrial
climate, there are no changes to the durability
and only low to negligible changes are visible in
the decorative properties.
5: Water vapour permeability / Breathing
activity
The material for roof coatings should be capable
of transporting moisture from the inside to the
outside. If this is not the case, it may result
in infections with fungi and/or moulds which is
very damaging for the roof construction.
The ISONIT roof coating is highly pigmented with
iron oxide colour pigments. These ensure a superior
covering power so that 20% less paint is required
on average than with “Normal Roof Coatings.”
On average 0.4 – 0.5 ml/m2 is used with concrete
shingles and 0.3 – 0.4 ml/ m2 with fibre cement.
To achieve adequate covering power, you need to
use 0.8 – 0.9 ml/ m2 paint with a “Normal
Roof Coating.” This of course has an influence
on the breathing ability of the roof.
Why does the ISONIT Roof Coating have such
good properties?
Iso Paint uses a specially developed binder
comprised of 3 molecule sizes, which ensures superior
properties. Below, you can see the illustration
of a roofing tile surface with a “Normal Roof
Coating” and a graphic of the ISONIT Roof
Coating with its 3 molecule sizes:
Normal Roof Coating Isonit-Roof
Coating
ISONIT Roof coating is a well thought-out product!
Here you
can find the latest test results for the ISONIT
100% pure acrylate |
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