Vetro Power Heat-Shield Glass Protect
Vetro Power Heat-Shield Glass Protect
Transparent heat reflective coating for glass. One coat on existing glass blocks UV and near-infrared heat and keeps the view clear: the coating alternative to solar control window film.
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| pH-value (undiluted) | 7.0 to 10.0 |
| Density (g/ml) | 1.00 to 1.05 |
| Flash Point (°C) | 54 °C (flammable liquid) |
| Colour | Dark blue liquid; cured film clear with a blue hue |
| Shelf Life | 12 months |
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Vetro Power Heat-Shield Glass Protect is a transparent heat reflective coating for glass. It is a liquid, applied in a single thin coat directly onto existing glass, where it cures into a clear film that blocks ultraviolet and near-infrared radiation and lets visible light through. Windows, facades, skylights and shopfronts keep their daylight and their view, with less solar heat and less fading coming through the glass. The coating is solvent-based and is applied and cured in a ventilated space. It does the job that solar control window film and heat reflective window film are bought to do. There is no sheet to cut, no adhesive layer and no edges or joins on the glass. The film forms on the glass and bonds to it through silane-coupling chemistry, so no primer is needed. How the coating worksSunlight arriving at a window is made up of ultraviolet, visible light and near-infrared heat. The cured film treats the three differently. Ultraviolet Up to 99% of UV-A and UV-B is blocked in the film. This is the part of sunlight that fades furniture, fabrics and artwork, and the film protects skin behind the glass from it. Near-infrared heat Up to 90% of the radiation in the 780 to 2500 nm band, the part of sunlight felt as heat, is rejected. The glass is not darkened to do this. Visible light About 75% passes through. The cured film is optically clear with a blue hue, so daylighting and the view are kept. Condensation The film reduces the temperature difference at the inner surface of the glass, which reduces condensation on windows in air-conditioned spaces. There are no fixed single values for these three figures. Results move by about 5% either way with the glass they are applied to, which is why each is given as a range or an upper limit. The film is a doped nano material in an acrylic-polysiloxane hybrid binder. It is 5 to 10 microns thick when dry, from a 20 to 60 micron wet coat, with a refractive index of 1.45 to 1.55, which is close to that of glass itself. A coating instead of window filmSolar control window film, heat reflective window film and sun control film are the usual ways to cut heat and UV through existing glass. Vetro Power Heat-Shield Glass Protect does the same job as a liquid. The table sets out the practical differences.
Where old window film is already on the glass, it is stripped, the adhesive residue removed and the glass degreased before coating. The tools for this are listed further down the page. Where it is usedThe coating goes on existing glass in place, so buildings and vehicles are treated without replacing the glass. Commercial buildings Glass facades, curtain walls, atriums and skylights. Lower cooling load, glare control. Residential Windows, sliding doors, balcony glass and sun-rooms. Thermal comfort and UV protection for interiors. Hospitality and retail Storefronts, hotel windows and restaurant glazing. Customer comfort, energy savings, fade protection. Automotive Cars, buses, trains and RV windows, not the front windshield. Cabin cooling and UV protection. Greenhouses and horticulture Polycarbonate sheets and greenhouse glass. Controlled solar gain, crop protection. Healthcare and museums Display cases, gallery windows and museum glazing. Artwork preservation, a UV-free environment. Industrial and warehousing Skylights, polycarbonate roofs and factory windows. Worker comfort and reduced HVAC load. Marine Yacht and boat glass, cabin windows. Cabin cooling with salt-air durability (over 500 hours salt spray, ASTM B117). ApplicationOne coat, no primer. The work is in the preparation and in keeping the wet film even. 1. Clean the glassBare, clean glass The surface must be clean, dry and free of dust, oil, grease, silicone, fingerprints and adhesive residue. Old window film, old coatings and sealant residue are removed completely. Degrease Clean and degrease with IPA (isopropyl alcohol) or butyl acetate. Let the glass dry fully and do not touch it again before coating. Conditions Substrate temperature 15 °C to 35 °C, ambient humidity below 80%. Not if rain is expected within 24 hours. Indoors, dust-free, with stable temperature and humidity, is the recommended environment. 2. Apply the coatingStir, do not shake Shaking puts air bubbles into the liquid. Stir gently before use. HVLP spray 1.0 to 1.3 mm nozzle, 2 to 3 bar, 200 to 250 mm from the glass. Single coat. Applicator or roller Microfibre applicator or short-nap microfibre roller. Single coat. Keep the wet film uniform; overlapping strokes leave visible streaks. Out of direct sun Apply away from direct sunlight so the wet film does not flash-dry on the glass. 3. Let it cureTimes at 25 °C and 60% relative humidity. Low temperature and high humidity slow the cure; an IR lamp at 60 to 80 °C brings it to 30 to 60 minutes. Do not wash, wipe or touch the coated glass during the first 48 hours, and allow 7 days before the first cleaning. Tools for the jobThe full application kit is twenty items of ordinary glazing and painting equipment. Disposable items (rollers, applicator foils, mixing cups) are not reused; spray equipment and trays are cleaned immediately after use with butyl acetate or IPA.  1. Glass cleaner pad  2. Squeegee  3. Glass scraper blade  4. Weighing scale  5. Lint-free cotton cloth  6. Masking tape with plastic sheet  7. Paper masking tape  8. 40 mm masking tape (optional)  9. Water spray bottle  10. Aluminium foil  11. Tray  12. Glass rods  13. Cup  14. Roller sponge  15. Roller handle  16. Temperature and humidity meter  17. Bottle refill (optional)  18. Calculator  19. Oil for roller handle  20. Measuring tape Coverage and packaging
Coverage is theoretical at the recommended single-coat dry film thickness. Actual coverage varies with the substrate, the application method and the operator; allow 10 to 15% extra for spray or roller loss. Technical dataValues for the liquid coating and the cured film, tested at 25 °C unless stated. Third-party test reports are available on request.
Care of coated glassFirst 7 days No cleaning until the film has fully cured, 7 days after application. Cleaning Soft microfibre cloth with plain water or a pH-neutral cleaner, light circular motions, no pressure. Every 3 to 6 months depending on exposure. Not to be used Abrasive sponges, scrubbers or steel wool; ammonia, bleach, alcohol-based glass cleaners or solvents. During building work Protect coated glass during construction, renovation and window cleaning. Do not scrape ice, stickers or paint splatter with metal blades; where the glass is exposed to site traffic, use a protective barrier film for the duration. Storage, handling and safetyThe liquid is solvent-based and flammable (flash point 54 °C): keep it away from open flames, sparks, hot surfaces and other ignition sources and use it only in a well-ventilated area. The cured film is non-flammable. Store in the original, tightly sealed container in a cool, dry, ventilated place at 5 °C to 30 °C, away from direct sunlight and heat sources. Do not freeze; keep upright. Once opened, reseal tightly and use within 30 days. Shelf life is 12 months from the date of manufacture in the unopened container. During application wear safety goggles, nitrile gloves and a respirator with an organic vapour cartridge (P2/A2), and cross-ventilate the work area. Limitations and warranty
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