Nowadays, over 85% of windows in Europe are wasting excessive avoidable energy. Unfortunately, years of wear and tear, improper installations, or low-quality products can keep your windows and doors from performing at peak energy efficiency and money loss. In terms of cost and energy efficiency, it is important to choose a good window and a glazing contractor who will provide you with quality products and craftsmanship that will ensure long-lasting durability.

Our innovative windows solutions give an essential contribution to obtaining a perfect insulation. As a result, reinforced and well sealed glazing eliminates the problem of wasted energy through leaking, rotten frames and inadequate sealing. Consequently, renewing the concept of your windows will be cost-effective, will reduce CO2 emissions and will make your building healthier.

Selective glazing can reduce heat loss by up to 70%, and the improved temperature stability throughout hot or cold periods has the potential to halve the energy required to maintain a comfortable environment all year round. As a result, cold spots, drafts and condensation are drastically reduced. SmartBuild will guide you in the choice of the right glazing depending on where you live, the climate and your particular needs.

Which glass do I choose?

For both new construction and renovation of homes, the minimum requirement applies that HR ++ glazing must be used. The HR ++ indicates the degree of insulation with which the heat loss through the glass is limited. This so-called thermal insulation performance is expressed in a U value (in W / m2.K). The lower this value, the better the thermal insulation.

STANDARD DOUBLE GLAZING, U-value 2.8 (compared to single glass 5.6).

Nowadays, this type of glass is often used indoors in homes and companies because of soundproofing properties, and where heat loss is not an issue. 


Here, a metal coating is applied inside, it means on the cavity side of the glass. It’s only used for glass damage repair.

HR + GLASS, U-value 1.6.

Here, in addition to the aforementioned coating, a gas filling is also used instead of a dry air filling. This type of glass is only used in the replacement market.

HR ++ GLASS (recommended), U-value 1.2.

Here, an improved coating is applied with an argon gas filling. This is currently the most commonly used double glazing.

(Triple high efficiency glass / Triple double glazing), U-value 0.9.

It’s a double glass consisting of three glass panes with two cavities. The two outer panes are provided on the inside with the improved high efficiency coating, and the cavities are filled with noble gas. Due to the thickness of the glass package, it’s mostly used only in new frames.