NightFlame Black Heat Resistant Glass 4 mm ROBAX

NightFlame Black Tinted Heat-Resistant Fireplace Glass 4 mm – ROBAX®

NightFlame black tinted heat-resistant glass with a thickness of 4 mm is a premium ceramic fireplace glass designed for modern fireplaces, wood-burning stoves and fireplace inserts where both performance and elegant appearance are important.

This special version of ROBAX® glass-ceramic from SCHOTT features a semi-transparent black tint that creates a unique visual effect. While the fire is burning, the glass allows the natural light of the flames to pass through, providing a clear and elegant view of the flames.

Once the fire goes out, the glass darkens and partially hides the combustion chamber. This so-called Dead-Front effect keeps the fireplace looking clean and elegant even when it is not in use.

NightFlame glass is therefore an ideal choice for modern interiors where the fireplace serves not only as a heating appliance but also as an important design element.

The glass is made from high-quality ROBAX® glass-ceramic with extremely low thermal expansion, ensuring excellent resistance to high temperatures and thermal shocks. The glass withstands temperatures up to 660 °C and is suitable for a wide range of fireplace and heating applications.

Premium German Quality – ROBAX® by SCHOTT

ROBAX® glass-ceramic from SCHOTT is one of the most trusted materials used by fireplace and stove manufacturers worldwide.

Key advantages include:

- temperature resistance up to 660 °C

- excellent resistance to thermal shock

- long service life and high material stability

- elegant black appearance when the fireplace is not in use

- slightly dimmed and softer flame appearance during combustion

- modern Dead-Front effect that helps hide the combustion chamber when the fire is off

NightFlame technology combines the proven performance of ROBAX® glass-ceramic with a modern tinted design. The glass gently reduces the brightness of the flames, creating a more subtle and comfortable visual effect while maintaining a clear view of the fire. You can find more about the SCHOTT brand on their official website. 

NightFlame Fireplace Glass – Burning vs Fire Off

This comparison shows NightFlame tinted fireplace glass while the fire is burning and after the fire goes out. When the fire is burning, the flames remain visible through the tinted glass. When the fire is off, the glass becomes darker and helps hide ash and soot inside the combustion chamber, keeping the fireplace looking clean and elegant.

NightFlame vs Clear Fireplace Glass – Fire Off Comparison

This comparison shows standard clear heat-resistant fireplace glass and NightFlame tinted fireplace glass when the fire is not burning.

With standard clear glass, ash and soot inside the combustion chamber remain clearly visible. NightFlame tinted glass creates a darker surface that helps hide these residues, keeping the fireplace looking cleaner and more elegant when it is not in use.

NightFlame tinted fireplace glass is commonly used for:

- modern fireplaces and fireplace inserts

- wood-burning stoves

- designer fireplaces with visible front glass

- replacement fireplace door glass

- high-end interior fireplace installations

This type of tinted fireplace glass is especially popular in modern fireplaces where owners want the appliance to look elegant even when the fire is not burning.

The semi-transparent tint enhances the appearance of the flames during combustion while helping conceal ash and residues once the fire goes out.

Glass Orientation

NightFlame heat-resistant fireplace glass is identical on both sides, so there is no inner or outer side that must face a specific direction.

The glass can be installed either way without affecting its performance or visual effect. This makes installation easier and ensures the same appearance and heat resistance regardless of orientation.

Custom Cut-to-Size Production

Every glass panel is manufactured individually according to the dimensions you enter.

For best accuracy, we recommend entering dimensions in millimetres (mm) and carefully measuring your original glass before ordering.

Width and height are interchangeable.

Example:

For a glass size of 40 × 40 cm, enter 400 × 400 mm.

Edge Types

By default, the glass is supplied with standard cut edges.

You can choose between several edge options:

Seamed Edges – safer and slightly smoothed edges

Ground Edges – professional appearance and higher precision

Alternative Fireplace Glass Option

If you are looking for a slightly thinner and more common option, we also offer 4 mm heat-resistant fireplace glass, which is widely used for standard fireplace doors and stove windows. The 4 mm heat-resistant glass is the most commonly used thickness for fireplaces and stoves and is fully sufficient for most standard applications. It provides excellent heat resistance up to 800 °C while allowing a clear view of the flames.

For larger fireplace doors or bigger glass panels, we recommend 5 mm heat-resistant glass, which provides higher mechanical strength.

If you want easier maintenance and cleaner glass during operation, we also offer self-cleaning heat-resistant fireplace glass, designed to reduce soot buildup and keep the view of the flames clearer.

All our replacement fireplace glasses are cut to size according to your exact dimensions and manufactured from premium ROBAX ceramic glass designed for high-temperature applications.

Important Installation Recommendations

When installing heat-resistant glass, it is important to use flat self-adhesive sealing tape 10×2 mm or 10×4 mm. The glass must never come into direct contact with the metal frame or stove body.

Place the sealing tape not only on the frame or glass but also on any clips, brackets or mounting parts to ensure the glass is fully isolated from metal components.

Tighten screws and fixing clips carefully and never overtighten them. Excessive pressure on the glass may cause it to crack.

Incorrect installation is one of the most common causes of glass breakage.

When handling glass panels, always work carefully and consider wearing protective gloves.

Fast Delivery

Orders placed on working days before 12:00 are usually processed the same day and dispatched immediately.

Typical delivery time is usually 4–5 working days depending on your location.

Need Help Measuring Your Glass?

If you are unsure how to measure your existing stove glass correctly, please check our glass measuring guide on the website.

Correct measurement ensures the new glass fits perfectly into your stove or fireplace door.

Warning - custom-made goods

This is a custom-made product, manufactured according to your specific dimensions.

In accordance with EU consumer protection law (Directive 2011/83/EU, Article 16(c)), the right to withdraw from the purchase does not apply once production has started.

Please ensure all measurements are correct before placing your order, as modifications, cancellations, or returns are not possible after manufacturing begins.