GEALAN S 8000
- 74 mm deep
- 5 – 6 chambers, depending on version
- 2 sealing levels
- Uf ≈ 1.1 – 1.2 W/m²K
Insulation • Energy Efficiency & Silence
Thermal and acoustic insulation: lower bills, a quieter home
A good window keeps warmth in during winter, heat out in summer and noise outside. Three things matter most: a multi-chamber profile, the right glass package and professional installation.
- Ug 0.5 – 0.6 W/m²K
- Argon and low-E coatings
- Sound insulation up to 45 dB
- Ready for energy renovation
Profiles
Multi-chamber profiles: S 8000 and S 9000
Air trapped in the profile chambers conducts heat poorly. The deeper the profile and the more sealing levels it has, the less heat escapes and the less noise gets in.
GEALAN S 9000
- 82.5 mm deep
- 6 chambers
- Centre seal — up to 3 sealing levels
- Uf down to 0.89 W/m²K
- Glass pane
- Argon
- Low-E coating
- Warm-edge spacer
Schematic drawing, not to scale.
Glass packages
The glass does most of the work
Glass makes up most of a window’s surface, so it has the biggest effect on heat loss. Modern packages combine three things: more panes, a noble gas in the cavity and invisible low-E coatings that reflect heat back into the room.
- Triple glazing: Ug 0.5 – 0.6 W/m²K
- Argon in the cavity — conducts heat less than air
- Low-E coatings reflect heat radiation back into the room
- Warm-edge (plastic) spacer reduces condensation at the glass edge
| Double glazing | Triple glazing | |
|---|---|---|
| Ug value | ≈ 1.0 – 1.1 W/m²K | 0.5 – 0.6 W/m²K |
| Cavity gas | Argon | Argon (2 cavities) |
| Low-E coatings | 1 | 2 |
| Unit thickness | about 24 mm | about 36 – 48 mm |
| Recommended for | Renovation on a budget | New builds, low-energy houses, north-facing rooms |
Ug describes the glass only. What counts for the whole window is Uw (glass + profile + spacer), which we state in your quote.
- Busy street noise (outside)70 dB
- Behind standard double glazing (Rw ≈ 32 dB)38 dB
- Behind triple glazing (Rw ≈ 36 dB)34 dB
- Behind acoustic VSG glass (Rw up to 45 dB)25 dB
Acoustic insulation
How much noise stays outside?
A window’s sound insulation depends mostly on the glass. Acoustic laminated glass (VSG with an acoustic interlayer) and asymmetric pane thicknesses also damp the low tones of traffic.
Illustrative example for 70 dB of outside noise. A reduction of 10 dB is perceived as roughly half as loud. Actual results depend on glazing, window size and installation.
Buyer’s guide
Buyer’s guide & energy renovation
Compare Uw, not just Ug
The glass value sounds better, but the whole window decides your bills. Ask for Uw at your window size.
Check profile and seals
Profile depth, number of chambers and sealing levels decide how well the window keeps heat and noise out.
Choose glass by orientation and noise
Triple glazing for north sides and cold rooms, acoustic glass on busy streets.
Installation is half the window
Even the best window loses heat if the joint with the wall is not sealed properly.
Energy renovation and grants
For properties in Croatia, the Environmental Protection and Energy Efficiency Fund (FZOEU) periodically publishes calls for the energy renovation of family houses, which can co-finance window replacement. Conditions and amounts change from call to call.
Check current conditions on the FZOEU website or with an energy certifier. We are happy to prepare the documents for your application.
- Quote with technical data (Uw values) for every element
- Declaration of performance and manufacturer documentation
- Invoice and installation records after completion
Why us
More advantages of our windows and doors
SurfaceGEALAN-acrylcolor®PMMA acrylic fusion, scratch and UV resistanceLearn moreSecuritySecurity up to RC 2Mushroom cams, laminated safety glass, and German Winkhaus security hardwareLearn moreInstallationInstallation to RAL Guidelines3-level vapour-permeable sealing without thermal bridgesLearn more
Enquiry & quote
Request a made-to-measure quote
Tell us what you are planning. We come to measure on site, advise you on profiles, glazing and colours, and prepare a quote for your building.
- On-site measuring
- Advice on systems, glazing and colours
- A quote prepared for your building