HSF74 is our only shielding paint that is completely free of preservatives. Can only be used indoors. Very high screening attenuation!
Just like for the HSF64, the environment is paramount for the YSHIELD HSF74 shielding paint, but the focus is also on people who are allergic to preservatives. The base of a shielding paint is usually a pure acrylate, but for the HSF64, it was changed to pure silicate paint with a minimal amount of ingredients and no preservatives. The shielding paint was developed with a potassium water glass base.
With the HSF74, YSHIELD could increase the screening attenuation to 45 dB, compared to the 44 dB that could be achieved with the HSF54 shielding paint, this means twice the shielding effectiveness. An increase from 44 dB to 45 dB is a substantial increase of the shielding effectiveness.
As a pure silicate paint, the HSF74 shielding paint has limited moisture resistance and, therefore, is only suited to indoor use. HSF74 is highly alkaline with a pH value of 12 because of the use of potassium water glass. As a result, the HSF74 shielding paint must be used with protective equipment. HSF74 is breathable, solvent-free, neutral odor, and low-emission.
Convincing properties of the HSF74 shielding paint
The HSF74 shielding paint by YSHIELD is best suited to the effective attenuation of stress caused by electrosmog from mobile radiation and electric alternating fields. Radio pollution from mobile phones, mobile Internet, WLAN, DECT, GSM, LTE, and many more is attenuated by up to 45 dB, which is an effectiveness of 99.997%. Electric fields from the power supply (alternating current) are grounded very effectively and can be attenuated by 100% (same as PRO54, HSF54 and HSF64).
We always strongly recommend two-coated protection, which means painting twice. The HSF74 shielding paint must be grounded!
- Highly-effective radio attenuation – shielding attenuation: One layer of HSF74: up to 39 Db. Two layers: up to 45 dB. The shielding attenuation is often measured in the EMC laboratory. The measurement setups used follow these standards: ASTM D4935-10, IEEE Std 299-2006, IEEEE Std 1128-1998, ASTM A698/A698M-07.
- Substrate: Good adhesion on absorbent, untreated, preferably mineral substrates such as chalk, silicate, clay, cement, etc. Not usable on gypsum-based substrates! After checking on a test surface, you can use small amounts of paint on absorbent dispersion paints, wallpapers, etc.
- Final coating: Preferably covered with plastic-bonded dispersion paints or silicate emulsion paints. We recommend restricted use of pure mineral paints (clay, chalk, pure silicate). You can find concrete recommendations on the technical data sheet.
- Grounding: Must be grounded! We recommend the self-adhesive grounding tape for indoor use.
Yield of the HSF74 shielding paint
Generally speaking, the yield of a shielding paint is necessary depending on the surface. The more the surface “sucks”, ie. is coloured, the more shielding paint is required. We recommend conducting small tests to see how quickly the paint “enters”. We highly recommend using our primer because that will prevent an excessively-high usage of HSF74 shielding paint. The “average” yield is based on a “non-sucking” surface.
- ONE LAYER: 1 liter of HSF74 is enough to cover up to 7.5 m² of an indoor surface
- TWO LAYERS: 1 liter of HSF74 is enough to cover up to 3.75 m² of an indoor surface
You need to mix the HSF74 shielding paint extensively before applying it. The heavier ingredients will have sunk from storage and transport, and this must be corrected. With the stirrer that we have developed ourselves it is possible to effortlessly and effectively re-mix and re-apply the HSF74 shielding paint. Simply insert it into a standard electric drill and mix for around 5 minutes per container. There should be no more solid remains of the solid ingredients at the bottom of the container – these would make the shielding less effective because they wouldn’t be put on the wall, but they’d remain in the paint bucket.Stirrer for shielding paints GK5 primer
Mandatory grounding of the HSF74 shielding paint
All electrically conductive surfaces must be grounded by a qualified electrician in accordance to the DIN/VDE regulations. This can be done over the electrical system’s grounding support (ground contact in the socket) or on the grounded heating pipe of the wall heaters (radiator). A protective circuit also needs to be installed in the fuse box. It must be noted that the circuit must be turned off before painting – a 230-volt, 16-amp shock can be deadly! The electrified flush-mounted box must be a centimeter away when painting the wall.
Electrical alternating fields can be grounded, contrary to mobile radiations (high-frequency) which are based on reflection and cannot be grounded as a result. A protection against mobile radiation is also based on reflection whereby the electromagnetic radiation is prevented from entering the room.
The HSF74 shielding paint shields against both emissions by grounding and reflecting electromagnetic radiations.Self-adhesive conductive grounding tape for shielding paint Conductive carbon fibers as an invisible alternative to the ground tape
HSF74 shielding paint technical information
- Shipping restrictions
This product is not frost resistant, shipping only at temperatures over 0 °C. At long frost periods during winter time, the shipping of this shielding paint can be rescheduled by a few days. Our frost resistant shielding paint HSF54 a nd PRO54 is our alternative that can always be shipped.
- Screening attenuation
One layer of HSF74 attenuates by up to 39 dB, two layers up to 45 dB. The shielding attenuation is often measured in the EMC laboratory. The measurement setups used follow these standards: ASTM D4935-10, IEEE Std 299-2006, IEEEE Std 1128-1998, ASTM A698/A698M-07.
- Application (coverage)
Interior (7.5 m² per liter)
Interior: Good adhesion on absorbent, untreated, preferably mineral undergrounds like chalk, silicate, clay, etc.. Restricted use on absorbent emulsion paints, wallpapers, etc., please check first! Not usable on gypsum based substrates!
Ceilings, floors, and indoor walls
- Top coating
Preferably covered with plastic bonded, water-based emulsion paints or dispersion silicate paints. We restricted recommend pure mineral paints (clay, loam, chalk, silicate). Please find appropriate product recommendations in the technical data sheet.
Must be grounded! We recommend our self-adhesive grounding strap.
- Reaction to fire
This product is a flame-retardant according to DIN 4102-1 (B1), see below under “Fire reaction report DIN 4102-1”.
Potassium silicate, graphite, water, carbon black, emulsifier, defoamer, cellulose, no preservative agent.
- Technical details
VOC-content: 0.1 g/l (the EU limit value for category A/a is 30 g/l from 2010). Sd-value: 0.02 m. Ph-value: 12. Adhesive tensile strenght: 1.7 N/mm². Shelf live: 12 months. Color: Black.