Custom glass
Custom insulating glass.
HR++ double glazing, HR+++ triple glazing, sound- and sun-control glass — made to measure for a warm, quiet and energy-efficient home. Configure your build-up online and see your price and U-value instantly.
Insulating glass — all types
U ± 2,8Standard double glazing
Double glazing without coating — affordable insulation, the simple basis.
U 1,0–1,1Hoogrendementsglas
Double glazing with low-E coating and argon — by far the most chosen insulation.
U ± 1,1Sun-control glass (SUN)
HR++ with sun-control coating — blocks solar heat, cooler indoors in summer.
U ± 0,6Triple glazing (HR+++)
Three panes, two cavities — top insulation for new builds and very low consumption.
More custom glass
What is insulating glass?
Insulating glass consists of two (double/HR++) or three (triple/HR+++) panes with an airtight, noble-gas-filled cavity between them. An invisible low-E coating keeps the heat inside. The result: less heat loss, less condensation and a lower energy bill — expressed as a low U-value.
The right build-up depends on your frame, insulation requirement and any wishes such as sound or sun control. In the configurator you configure the build-up yourself and see your price and U-value instantly.
U-value per glass type
- Single glass± 5,8
- HR++ double± 1,1
- HR+++ triple± 0,6
- Vacuum glassup to 0,35
Lower = better insulated (W/m²K).
Calculate your U-value →This is how you put together your custom glass
Click through the configurator yourself — in a minute you will see how you go from idea to order, to the millimetre and with the right price straight away.
- 1
Choose your glass
Select your glass type, color/design and thickness. You can immediately see the price per m².
- 2
Choose the shape
Rectangle or a special shape (circle, oval, oblique corner). You will immediately see any shape surcharge.
- 3
Enter your measurements
Width × height in mm. Do you have the rebate size? We automatically deduct ±4 mm clearance per side.
- 4
Edits as desired
Edge finishing (from standard cutting edge to polished, miter or bevel) and bores, recesses and rounded corners.
- 5
Immediately the price, ordered safely
Live price (incl./excl. VAT) with all surcharges, a free safety check and then insured shipping.
Frequently asked questions about insulating glass
What is the difference between HR++ double glazing and triple glazing?▾
The difference is in the structure and the insulation value. HR++ glass consists of two panes of glass with an insulating noble gas (argon) in the cavity and a wafer-thin heat-reflecting coating — which insulates much better than old double glazing. Triple glazing (HR+++) continues with three glass panes and two cavities: it insulates extremely well and is the standard for energy-neutral homes, but is thicker and heavier than HR++.
Does triple or HR++ glass always fit in my existing window frames?▾
HR++ glass fits most modern wooden, plastic or aluminum frames, because the total thickness is often comparable to older double glazing. Triple glass is a lot thicker and heavier due to the three layers of glass; Sometimes window frames need to be adjusted (for example with deeper glazing beads) or the fittings are not designed for the extra weight. Do you want to know what to pay attention to when measuring your frame thickness? Read in our knowledge base how to check which insulating glass fits.
What does the U-value mean for insulating glass?▾
The U-value indicates how much heat is lost per square meter through the glass: the lower, the better the insulation. Old single glazing is around 5.8; modern HR++ around 1.1; triple glass falls well below that at 0.6 to 0.5. A lower U-value retains heat better and immediately saves on your energy bill. Curious about the value of your structure? Calculate it with our U-value calculator.
How do I calculate the total thickness of my insulating glass in the configurator?▾
The total thickness is the sum of the glass sheets and the cavity. In the configurator you see this, for example, as 4-15-4 or 4-15-5: an outer leaf of 4 mm, a cavity of 15 mm and an inner leaf of 4 or 5 mm — so 23 or 24 mm in total. Which glass and cavity thickness you choose mainly depends on the space in your frame. Because the cavity has a major influence on the insulation, the configurator calculates the U-value live while you assemble. Are you unsure about the structure? Contact us and we will take a look.
Am I entitled to a subsidy for insulating glass?▾
As a private individual, you can often take advantage of the national ISDE subsidy when you insulate your home with HR++ or triple glazing. Conditions apply: the glass must be placed in the existing thermal shell, the U-value must meet the minimum requirements and installation must often be carried out by a recognized company. Are you requesting installation through our installation partner? They will then help you with the correct documentation for the subsidy application.
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Good to know
Compare insulating glass: HR++, triple or vacuum glass?
HR++, triple and vacuum glass compared for insulation, thickness, price, frames and subsidy, so that you choose the right insulating glass for your home.
Read more →
Does thicker insulating glass fit in my existing frame?
Do you want to replace single glazing or old double glazing with HR++, triple or vacuum glazing? This way you can check whether the thicker insulating glass fits in your existing frame - rebate depth, glazing beads and weight, with a complete measuring step-by-step plan.
Read more →
Replacing glazing beads with insulating glass: when is it necessary?
Replacing glazing beads with new insulating glass: when is it necessary, nose batten versus cover batten, per frame material and why good glazing beads keep your glass edge dry and protected.
Read more →We'll help you choose
Not sure which glass or thickness you need? Read our measuring and choice guides, or get in touch — we're happy to help before you order.