Solarguard® Solar Control Glass

It's a laminated safety glass with an encapsulated film with microscopically thin coating engineered to reduce the amount of solar heat passing into a building or vehicle while still admitting daylight. The coating reflects a large share of the sun's infrared energy — where about half of solar heat arrives — before it enters the space, cutting cooling loads and improving comfort.

They manage heat in opposite directions. Low-E coatings keep internal heat in (winter insulation, low U-value); solar control coatings keep solar heat out (summer, low g-value/SHGC).

The g-value (Europe) or SHGC (North America) is the fraction of incident solar energy that ends up inside — lower means less heat gain (solar control glass typically ranges 0.2–0.4 versus ~0.7–0.8 for clear double glazing). Light transmission (LT/VLT) is the fraction of visible light admitted. Selectivity is the ratio LT/g — the key quality metric. A selectivity approaching or exceeding 2.0 means you're getting maximum daylight per unit of heat admitted (e.g., 60% light with 0.30 g-value).

Modern high-selectivity coatings don't have to — neutral products deliver 50–70% light transmission with low heat gain and only subtle tinting. That said, every solar control product sits somewhere on a spectrum from neutral/clear through blue, green, gray, and reflective silver appearances; the appearance is a design choice, and external reflectance is often chosen deliberately for the facade aesthetic.

In cooling-dominated buildings it's one of the highest-impact envelope measures: cutting g-value from ~0.7 to ~0.28 roughly halves or better the solar gain through glazing, commonly reducing HVAC cooling loads by 20–40% for highly glazed buildings, allowing smaller chillers, and reducing peak demand. Savings depend on orientation, glazing ratio, climate, and internal gains — which is why it's evaluated with energy modell sing on serious projects.

East and west facades (low sun, hard to shade), large south facades in hot climates (north in the southern hemisphere), fully glazed curtain walls anywhere, skylights and roof glazing (highest sun exposure), and cooling-dominated or mixed climates. In cold, heating-dominated climates, designers may deliberately choose higher g-values to harvest free winter solar heat — solar control is a climate-specific decision, not a universal upgrade.

No. Applied films are a retrofit product with shorter lifespans, higher risk of thermal stress breakage on unsuitable glass, and generally inferior selectivity. Factory-coated solar control glass (magnetron-sputtered "soft coat" in the IGU cavity, or pyrolytic "hard coat") is engineered into the glazing unit, lasts the life of the unit, and achieves far better light-to-heat ratios. Film has its place in retrofits; new glazing should be coated glass.

Yes — routinely: with thermal insulation (double/triple glazed low-E units), laminated safety and acoustic interlayers, self-cleaning coatings, fritted or printed patterns, heated glass, and bird-safe patterns. The coating position in the unit matters (solar control coatings usually go on surface #2, the cavity-facing side of the outer pane) and must be specified correctly for both performance and appearance.

Two real design considerations. Absorbing coatings and tints heat the glass itself, so partially shaded panes develop temperature differentials that can crack annealed glass — heat-strengthening or tempering is commonly required; a thermal stress assessment is standard practice. Externally, highly reflective products can create glare or heat concentration toward neighbors (famously the London "Walkie-Talkie" incident), which planning authorities increasingly scrutinize.

Solar control coatings add a modest premium over standard low-E glazing (typically 10–30% on the glass, far less on the whole facade cost), with zero moving parts and zero maintenance — which makes them the baseline measure. External shading (brise-soleil, louvers, dynamic blinds) blocks heat before the glass and outperforms any coating, but costs more and needs maintenance. Best practice on demanding facades combines both: high-selectivity glass plus targeted external shading, sized by energy modeling.

Want me to compare specific coating families (e.g., double- vs triple-silver sputtered coatings), go into selectivity numbers for current products, or look at solar control strategy for a particular facade orientation and climate?