What is fire-resistant glass?
Fire-resistant glass is glass that helps slow the spread of fire, smoke and heat. It is used where a building is divided into fire-resistant zones, such as facades, windows, doors, facades and partitions.
Fire resistance is expressed in classifications such as E, EW and EI. The time period is also important, such as 30 or 60 minutes. Which version is needed depends on the application, the frame and the tested glass construction.
BENG glass combines the strength of Pyroguard fire-resistant glass with the insulating power of vacuum glass. This makes it suitable for projects where fire safety and sustainability are both important.
Fire-resistant glass with high insulation
Fire-resistant glass from BENG glass, offers up to 60 minutes of fire resistance as well as 3x better insulation than HR++ in one solution. Due to the low thickness of vacuum glass , a slim construction starting at only 15 mm is possible. As a result, the glass is not only lightweight, but also fits into existing window frames.
Benefits at a glance:
- Superior insulation up to U=0.35 - up to 3× better than HR++
- 30 or 60 minutes fire resistance - possible with EW or EI classification
- Slim glass construction from 15 mm - suitable for many façade and frame situations
- Safety - available with injury safety and fall-through safety according to NEN 2608
Need advice for your project?
Fire-resistant glass must always fit within a tested structure. That is why we are happy to look at the application, the desired classification, the frame and the insulation and safety requirements for each project.
Fire-resistant glass 30 minutes or 60 minutes
Fire-resistant glass is available in different classifications. Many projects involve 30 or 60 minutes of fire resistance. Which version is needed depends on the application, the building and applicable fire safety requirements.
The classification is always determined on the basis of a tested glass construction. This takes into account such factors as flame density, heat radiation and temperature transmission. The frame, mounting and location of the glass also play a role.
For facade applications, BENG glass offers solutions with EW30 or EW60 classifications. This way you combine fire safety with strong insulation, injury safety and fall-through safety within an appropriate, tested structure.
Advantages of fire-resistant glass
Fire-resistant glass from BENGglas combines the safety of fire-resistant glass with the insulation strength and slim construction of vacuum glass. It slows the spread of fire, smoke and heat for up to 60 minutes, helping to better protect people and buildings.
Where traditional fire-resistant insulation glass often does not insulate as well, BENG glass combines fire safety with an extremely low U-value up to U=0.35 that is as much as 3x better than HR++ glass. Ideal for facades of offices, factory halls, healthcare facilities and other commercial buildings where safety and energy efficiency come together.
- High fire safety - possible with 30 or 60 minutes fire resistance
- Strong insulation up to U=0.35 - up to 3x better than HR++ glass
- Slim glass construction from 15 mm - fits even in slim and lightweight window frames
- Safe in use - two-sided injury and fall-through resistant
- Supported by an independent test report - always based on a tested structure
Ordering fire resistant glass
Fire-resistant glass requires the right solution for each project. The glass construction depends on the application, the desired fire resistance, the frame and the requirements for insulation and safety.
That's why we look at your situation first. Is it a facade, window, door, facade or fire separation? Is 30 or 60 minutes of fire resistance required? And should the glass also meet requirements for injury safety or fall-through safety?
Based on this, we advise which BENG glass solution fits within a valid test structure. This way you combine fire safety with strong insulation and a slim glass construction.
When is fire-resistant glass mandatory?
Fire-resistant glass is mandatory when glass is part of a fire separation, for example between two fire compartments. In the Building Works Decree for the Environment ( Bbl), there is a requirement for the resistance to fire penetration and spread (WBDBO).
- Fire penetration
This is where a fire spreads from one room to another via internal walls or ceilings - i.e. not via the outside air. The fire resistance of these separation structures is determined according to NEN 6069 (reference from NEN 6068). - Fire spread
In this case the fire spreads via the outside air to another room. This is assessed in accordance with NEN 6068, which specifies the resistance to fire penetration and spread between spaces.
BENG glass and Pyroguard
BENG glass can be combined with Pyroguard fire-resistant glazing. This allows different EW and EI classifications, always depending on the tested structure and the requirements of the project.
References
Are you curious about where vacuum glass is already being used? Check out our references and discover how BENG glass is being used in all kinds of projects - from listed buildings and protected heritage sites to sustainable new construction, canal houses and sleek offices.
This is how we are helping, window by window, to create energy-efficient buildings with lower carbon emissions.
Sustainability of modern office building
Easily meet BENG standards with BENG glass!
Sustainability of office building in Leeuwarden
Differences at a glance
| BENGglas | Double glazing | Triple glazing | |
|---|---|---|---|
|
U-value (W/m²K) |
>0,35 | 1,10 | 0,70 |
|
Thickness from (mm) |
6,7 | 21 | 38 |
| Fits existing window frames | Yes | Sometimes | No |
| Tempered |
Standard EN3569 Except for BENGglas 6,7 mm (half tempered) |
Optional | Optional |
|
Light Transmission (LTA in %) |
> 83 | 80 | 65 |
|
Solar Heat Gain (G-value) |
>0,33 | 0,76 | 0,52 |
|
Sound Insulation Rw (C;Ctr) dB |
36 (–2; –3) to 41 (-2;-6) for BENGglas Hybrid |
31 (-1;-4) | 33 (-2;-6) |
| Insulation degradation at horizontal tilt (%) | 0 | 60 | 40 |
| Expected lifespan (years) | 50 | 20 - 25 | 30 |
| U-value degradation over time? | No | Yes | Yes |
| BENGglas Extra clear | BENGglas Single Coated | BENGglas Double Coated | BENGglas Triple Coated | BENGglas Monu | BENGglas Monu Restover | BENGglas Solar Control | BENGglas SUN | |
|---|---|---|---|---|---|---|---|---|
|
U-value (W/m²K) |
0,50 | 0,40 - 0,50 | 0,40 | 0,35 | 0,50 | 0,50 | 0,50 | 0,50 |
|
Thickness from (mm) |
8,3 | 6,7 | 8,3 | 8,3 | 8,3 | 12 | 10,3 | 14 |
|
Maximum dimensions (in mm) |
2.350 x 4.150 | 2.350 x 4.150 | 2.350 x 4.150 | 2.350 x 4.150 | 2.350 x 4.150 | 1.500 x 2.500 | 2.350 x 4.150 | 1.500 x 2.500 |
| Light Transmission (LTA %) | 83 | 78 | 70 | 68 | 83 | 83 | 45-47 | Adjustable |
|
Solar Heat Gain (G) |
0,68 | 0,58 | 0,39 | 0,33 | 0,68 | 0,68 | 0,29 | Adjustable |
| Sound Insulation Rw (C;Ctr) dB |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
39 (-2;-3) |
36 (-2;-3) up to -41 dB (-2;-6) in the hybrid version |
39 (-2;-3) |
| Properties |
Extra clear Extra thermal Extra light |
Clear Color-neutral glass Ultra thin: > 6,7 mm |
Solar control glass |
Best U-value Extra solar control Commercial buildling |
Heritage glass (light drawn) |
Heritage glass (strongly drawn) |
Solar control glass | Energy-generating glass |
Find a certified installer
BENGglas has an extensive network of over 150 certified installers across Europe, specializing in vacuum glass installations. This way, you’re always assured of a professional close to home! Want to get the best deal easily? Fill out our quote form and receive three competitive offers from the three nearest BENGglas dealers in your area!
Frequently asked questions
Wat kost brandwerend glas per m²?
De prijs van brandwerend glas per m² hangt af van de gewenste brandwerendheid, de glasopbouw, afmetingen, dikte, veiligheidseisen en toepassing. Glas met een EW60- of EI60-classificatie is meestal duurder dan glas met een 30 minuten classificatie. Omdat brandwerend glas altijd moet passen binnen een geteste opbouw, is maatwerkadvies nodig voor een betrouwbare prijs.
Neem rechtstreeks contact met ons op via [email protected] en we voorzien je graag vrijblijvend van een offerte.
Welk glas is brandwerend?
Brandwerend glas is speciaal getest glas dat de verspreiding van vuur, rook en hitte vertraagt. Het glas krijgt een classificatie, zoals EW30, EW60, EI30 of EI60. Deze geeft aan hoe lang het glas brandwerend blijft en welke bescherming het biedt. Gewoon isolatieglas, HR++ glas of triple glas is niet automatisch brandwerend.
Wanneer is brandwerend glas verplicht?
Brandwerend glas is verplicht wanneer glas onderdeel is van een brandscheiding, bijvoorbeeld tussen twee brandcompartimenten. In het Besluit bouwwerken leefomgeving (Bbl) gelden eisen voor de weerstand tegen branddoorslag en brandoverslag, ook wel WBDBO genoemd.
Wat is het verschil tussen EW en EI brandwerend glas?
EW-brandwerend glas beperkt vlammen en warmtestraling. EI-brandwerend glas biedt daarnaast ook extra isolatie tegen temperatuurdoorlaat. Welke classificatie nodig is, hangt af van de toepassing en de eisen uit het bouwplan of brandveiligheidsrapport.
Kan brandwerend glas ook goed isoleren?
Ja, brandwerend glas kan worden gecombineerd met sterk isolerend glas. BENGglas in combinatie met Pyroguard biedt brandwerendheid én een zeer lage U-waarde die tot drie keer beter is dan hoogrendement dubbelglas. Zo combineer je brandveiligheid met een maximale isolatie, zonder dik en zwaar triple glas.
Kan ik brandwerend glas bestellen bij BENGglas?
Ja, BENGglas kan worden gecombineerd met brandwerende beglazing van Pyroguard. Afhankelijk van het project zijn EW- classificaties van 30 of 60 minuten mogelijk. Omdat elke toepassing moet voldoen aan een geldige testopbouw, adviseren we altijd eerst een projectgerichte beoordeling. Neem daarvoor contact op met [email protected]
Wat betekent brandwerend glas in 30 of 60 minuten?
Brandwerend glas 30 minuten vertraagt de verspreiding van brand gedurende minimaal 30 minuten binnen de geteste toepassing. De exacte bescherming hangt af van de classificatie, zoals EW30 of EI30. Het glas moet altijd worden toegepast zoals getest.
Brandwerend glas 60 minuten biedt een langere brandwerende werking dan 30 minuten glas. Bij classificaties zoals EW60 of EI60 blijft het glas tot 60 minuten voldoen aan de geteste brandveiligheidseisen. Dit wordt vaak toegepast bij gebouwen met hogere brandveiligheidseisen.
Wat betekent EW30 bij brandwerend glas?
EW30 betekent dat het glas 30 minuten weerstand biedt tegen vlammen en warmtestraling beperkt. De exacte toepassing moet altijd passen binnen een geldig testrapport.
Kan brandwerend glas in bestaande kozijnen?
Dat kan soms, maar alleen als de glasopbouw, maatvoering en kozijnsituatie passen binnen de geteste toepassing. Daarom is vooraf advies nodig.
Wel is BENGglas slanker dan regulier brandwerend glas. Dit omdat vacuümglas met minder glaslagen en glasdikte een tot 3x betere isolatie kan bereiken dan HR++ glas. De kans is dus aanzienlijk groter dat je met BENGglas de bestaande kozijnen kunt behouden.
Neem contact met ons op via [email protected] en informeer naar de mogelijkheden.