How much solar energy does KB BG90 reject (Total Solar Energy Rejection [TSER])?
What is special about KB BG90 coating since there is not much difference in physical appearance after it is applied onto the glass?
From the test report, KB BG90 coated on 6mm clear float glass, rejects a total solar radiation of about 44 %, these includes 90 % of IR, 99 % of UV and 15 % of visible light.
How does KB block heat since its VLT is high? (How does KristalBonded glass improve heat cut?)
Before KB BG90 application, TSER on 6mm clear float glass is 20%.
After KB BG90 application, TSER becomes 44% (whereby 99% of harmful UV rays and 90% of IR are rejected.)
Hence, KristalBond creates a more conducive living environment where you can enjoy clear view and natural lighting.
Does KB BG90 coating block the incoming sunlight and make the interior darker?
Tinted glass blocks high amounts of VLT but allows IR transmission which converts into heat. KB BG90 does the opposite by blocking high amounts of IR (90%) yet allows high VLT of 76%. This means KB BG90 allows more light transmission rather than heat.
Does tinted glass reduce heat like KristalBond?
No, the VLT drops by only 10~14%.
For example, on a 6mm clear float glass, the initial VLT is 88% and after coating it with KB BG90, the VLT drops to 76%.
How much energy is saved before and after KB BG90 application?
Tinted glass does reduce a certain amounts of heat. However, the trade offs are lower VLT and permanent coloured image (colour distortion).
On the other hand, KB BG90 provides high VLT plus the benefit of 99% UV cut and 90% IR cut. It also maintains the natural view without colour distortion making it suitable for retail outlets, showrooms, window displays, skylights and hotels.
Is KB BG90 technology Energy Absorptive or Energy Reflective?
Energy saving simulation is complicated and requires an engineer to do a comprehensive simulation. If you can provide the information such as the original glass performance, the windowâ€™s size and orientation, and location, we are able to calculate the estimated energy savings.
As a basic principle, energy incoming from East or West facing windows can be reduced by as much as 20%.
On the average, KB BG90 reduces room temperature by 3-5Â°C, and when the sun shines directly on the window the temperature difference can be as high as 7-10Â°C.
How can the 10% of Infrared transmittance give 56% of DET (Solar transmission)?
KB coating is energy absorptive.
KB BG 90 Cuts 99% of Ultraviolet rays, does that mean my furniture/display items will NOT fade? Does KristalBond stop fading ?
Total Solar Energy = Ultraviolet 2%, Visible light 47% and Infrared 51%
KristalBond coating transmits 10% Infrared.
The remainder 50% solar energy which comes from UV and Visible light are not addressed.
Hence DET 55% is the result.
The total solar spectrum wavelength covers from 280 to 2,500 nanometer consist of Ultraviolet, Visible light and Infrared
How much longer can my furniture / display items last now that there is KristalBond coating on the windows to cut off UV rays and minimize infrared ?
Contrary to popular believe, zero UV rays does not equals to zero fading. KristalBond does not stop fading, it reduces the fading duration.
Ultraviolet exposure is the main cause of fading, however it is not the only factor. Here is a breakdown on the causes of fading:
25% Visible Light
Will my plants live without getting any UV ?
There is no absolute answer on this. The life of your valuables, in terms of fading, depends on multiple factors such as the colour and materials of your home furnishings; the frequency,
duration and intensity of UV exposure; variations in temperature and humidity in the home; and the way home furnishings are used and maintained.
Furniture and displays that uses material with UV-resistant properties have more resistance to fading, however as described above, UV protection alone is insufficient to stop fading.
Does KB coating remove glare ?
Plants live well without UV. They require a lot of natural visible light without any tint/colour. Using KB BG90 will not change a plants growth.
Will KB BG90 distort the view like window films ?
KB BG90 provides slight reduction on VLT, resulting in less glare without compromising on clarity.
However, it does not remove the glare completely, since KB BG90â€™s main objective is to harvest natural visible on the maximum level.
Is KB BG90 technology patented ?
KB BG90 minimizes distortion.
KB coating is chemically bonded onto the glass without adhesive; therefore it is air bubble-free. Moreover, once it is cured, it forms a structure similar to that of the glass. Hence the image distortion remains at minimal.
What is â€˜Sol-gelâ€™ ?
Yes, it is patented in 16 countries, including Australia, Belgium, Brunei, China, France, Germany, Indonesia, Italy, Japan, Korea, Malaysia, Singapore, Taiwan, Thailand, UK and USA
Does KB BG90 technology have a â€˜green labelâ€™?
Sol-Gel is the term used to describe the change of phase from â€˜liquidâ€™ to â€˜solidâ€™. KB BG90 uses this change of phase to form glass-like structure without using high temperature. Normal glass need to be heated over 600Â°C to form, yet, KB BG90 can be processed at room temperature.
What is the main ingredient of KB BG90?
No. Solar control coating such as KB BG90 is relatively new in the industry and no standard is set up. KB is in contact with relevant authorities for any update on this matter and information will be updated on our website.
What is the durability of KB BG90? Does it bubble or peel like window films ?
Its main ingredient is the silicone based binder which is similar to glass (SiO2). This makes KristalBond compatible with the glass surface and having similar attributes such as:
Resistance to weather, scratch and fire
What is the thickness of KB BG90 coating compared to window film ?
KB BG90 has the similar composition as glass. It is chemically bonded onto glass without the use of adhesive. Therefore, it will not bubble or peel off from the glass like film. KristalBond provides a 10-year warranty against cracking, bubbling and peeling of the coating
When the glass breaks, can KB BG90 hold the glass like the film does? Does film provide better safety feature ?
KB BG90 is averagely 7 micrometers thick while most films are about 40 micrometers thick. (Depending on films.)
Is KB BG90 coating scratch resistant? What is the hardness of the coating ?
KB BG90 doesnâ€™t change the glass safety specification, which means if the original glass is supposed to break at certain impact, it will break even if it is coated.
Is KB BG90 coating fire resistant ?
The Hardness of KB BG90 coating is 6H. It is scratch resistant to a certain extent; however it is not scratch-proof.
Can KB BG90 make coated glass fire-rated/fire-proof ?
KB coating is combustion resistance, tested under JIS R3211:1998 and JIS R3212:1998. It does not incinerate nor release toxic fumes upon exposure to fire.
How long can KB BG90 coating last ?
KB coating is combustion resistance, tested under JIS R3211:1998 and JIS R3212:1998. However, it does not make the glass fire-proof or fire-rated, which has a different meaning in standard.
What happens after 10 years? Does KB coating loose its effectiveness or would it disappear ?
KB gives a 10-year warranty against bubbling, peeling and cracking. However, the coating can last beyond 10 years with minimal change to its properties.
What is the maximum or minimum area KB BG90 is able to coat ?
Through Weathering Test in accordance with ISO 11341: 1994, using the filtered Xenon-arc, KristalBondâ€™s coating was exposed to intense radiation for 2000 hours which is equivalent to 10 years of sun exposure (according to industrial standards). KristalBond passed the test with minimal change to its performance. Its UV performance may be reduced by 7%.
Are there any noticeable joints after KB coating?
There is no limit on height. The width can be as wide as 4m at this moment and can be extended.
Is there any glass that cannot be coated ?
Unlike window films, which come in a fixed size, KB coating is seamless. You wonâ€™t see any joints on the coated glass.
Is KB BG90 applicable on the glass surface facing outside?
KristalBond is not applicable on
Reflective glass (coated side)
Low-E glass (coated side)
Frosted glass (treated side)
Decorative (printed side)
Wired glass. (Assess of thermal stress calculation prior to the coating)
Can KB BG90 be coated on Plexiglas ?
KB BG90 is applied on the glass surface facing inside only to protect it from the elements.
Can KB BG90 be coated on other material other than glass ?
KB BG90 is designed to bond on glass surface only. Although Plexiglas may sounds like glass, it is a type of plastic. Therefore, KB BG90 canâ€™t be coated on Plexiglas.
What are the colours available for KB BG90 ?
No. It is designed for glass surface only.
How long does it take to coated ?
Currently, KB BG90 clear is the standard, ensuring clear view with low haze level. A light tint of green or blue is available upon request at extra cost.
Can KB BG90 be coated before the glass is installed ?
Depending on the window sizes. (On the average, a 2-member team can do up to 50m2/
538ft2 per day, subject to conditions). Please check with the application/tech support team for each project.
Can KB BG90 be coated on glass before it is laminated (laminated glass) ?
Yes, it can be done. Some glass installers and client prefer to coat the glass prior to installation. However, the following steps have to be adhered to before wrapping the coated
glass to protect it during transportation:
The coated surface needs to be fully cured (min. 3 days at 25-30Â°C)
Direct sun exposure after tack-free accelerates the curing process.
Do not expose coated surface to water.
Can KB BG90 be coated on tinted window film?
Yes, it can be done. However, the coated surface must be fully cured (7 days) before laminate process takes place. For more details, please consult us for further information.
Does KB BG90 changes the original colour appearance of glass ?
No. We have to remove the film first before applying the liquid onto glass. Additional cost is incurred for the removal of the window film.
There is an odour after KB BG90 application, what is it and will it affect a personâ€™s health ?
KB BG90 is almost colourless, except for a light tinge of green. When applied onto glass it is hard to tell the difference between a coated and non-coated glass.
THow is the Application Process like ?
The odour is the alcohol-based solvents which will dissipate in 1 day. Wait 24 hours before ventilating the room by opening the windows/doors. The amount of solvents used in KB BG90 is within the threshold specified by the relevant authorities.
If you are sensitive to the smell, it is advisable not to stay in the area for at least one day.
How long does KB BG90 take to dry ?
Hereâ€™s what we will do:
Protect your fixed furniture and the areas near the glass with plastic sheets and protective tapes
Clean the glass to be free from dust and oil
Coat the glass with KristalBond
KristalBond is a liquid coating which has a tendency to attract dust from its surrounding. How are you going to minimise the dust particle level?
The surface drying process takes about 1 hour. It takes 7 days for full curing. After 7 days, you can clean the glass as usual with soft cloth and mild detergent.
Do you need to dismantle the glass panel during the coating process ?
We have processes in our application method to minimize dust particles before we do the coating on the glass such as :
protecting the work area
thoroughly cleaning the glass
limiting the number of persons in the area.
How do you ensure the coating thickness is consistent ?
No. Coating will be done on-site without removal of the glass.
What are the precautions to follow when cleaning a KristalBonded glass? What types of detergents should be used ?
Consistency is achieved by :
Fixing the ratio of the liquid to use for a specific area.
Applicators strictly following the application procedures which are designed to obtain a uniformed finishing.
KB BG90â€™s natural self-levelling property helps it to spread uniformly when the right application process is observed.
Can I stick â€˜removable stickersâ€™ on KB BG90 coated glass for advertisement? What can I use to remove glue ?
You can wipe the glass with a soft cloth and a mild glass cleaner. Do NOT use strong acidic or alkaline detergents. Neutral (pH5-8) detergent is best.
I spilled paint over KB BG90 coated glass surface. Can turpentine be used for paint removal ?
Yes, you can paste these stickers over it as long as the coated surface is fully cured (7 days). You can use IPA (Isopropyl Alcohol) to remove the remaining glue residues. However, do not use paint thinner or other solvents as it may attack the coating. Also, do not use sharp objects such as the scraper to remove the sticker.
I scratched the KB BG90 coating. Can it be repaired ?
Yes, it can be used. However, do not leave it soaked on the KB BG90 coating for too long. If you find the coating looking hazy, it is caused by the solvent in the paint which attacks the KB BG90. Paint thinner should not be used as it will attack the coating.
Can I use a window cleaning squeegee? Will it scratch KB BG90 coating?
No. When it is scratched, it cannot be repaired just like ordinary glass.
You can use it for cleaning. However, please take caution there is no hard particle, such as sand, between the rubber blade as it may cause the scratches.