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Guangzhou craft glass manufacturers of glass screens, how to avoid color fading and durability issues with enamel glass

Release time:

Mar 22,2025

How to prevent color fading and durability issues with enamel glass? Key points for selection and maintenance!

Enamel Glass, due to its vibrant colors and good weather resistance, is often used in architectural decoration, art glass, curtain walls, etc. However, improper selection or use may lead to problems such as color fading and insufficient durability. Here are the key points to avoid these problems:

Key 1: Choose high-temperature sintering enamel process to avoid low-temperature spraying discoloration

Misconception: Some glass on the market only uses low-temperature spraying or ink printing, resulting in poor color adhesion and easy fading.

Correct approach:

- Real enamel glass is sintered at a high temperature of 600-800℃, and the enamel glaze is fused with the glass surface, ensuring the color remains lasting and does not fade.

- Inferior processes (low-temperature spraying, ink printing) only form a thin film on the glass surface, which will peel off over time.

- When purchasing, inquire about the glass process, and give priority to “high-temperature enamel sintering”, rather than ordinary spray painting or screen printing processes.

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Key 2: Confirm the enamel glaze composition to avoid discoloration of inferior materials

Misconception: Some low-quality enamel glazes use inferior dyes, which are prone to fading or discoloration when exposed to sunlight or humid environments for a long time.

Correct approach:

- Choose high-quality glazes containing inorganic metal oxides, such as iron oxide, chromium oxide, and cobalt oxide. These pigments can withstand high temperatures and remain unchanged for a long time.

- Avoid organic dye coatings. This process produces vibrant colors in the short term, but will gradually fade when exposed to ultraviolet light for a long time.

- High-end architectural glass usually uses international Brand glazes such as German Ferro and Italian Colorobbia, which are more stable and durable.

Key 3: Glass substrate quality affects durability

Misconception: The firmness of the color of enamel glass depends not only on the glaze but also on the quality of the glass itself.

Correct approach:

- Choose high-quality base glass, such as ultra-white glass, float glass, and tempered glass. The surface is smooth and free of impurities, which can better adhere to the enamel glaze layer.

- Avoid choosing ordinary low-quality glass. Rough surfaces or impurities result in poor glaze adhesion, easily leading to peeling problems.

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Key 4: Weather resistance test to ensure that the color does not change during long-term outdoor use

Misconception: Some low-end products have not undergone ultraviolet and acid-base resistance tests. Long-term exposure to outdoor environments may cause fading or embrittlement.

Correct approach:

- Outdoor enamel glass should pass the UV aging test (ultraviolet exposure test) to ensure that the color does not change during long-term use.

- Acid-base resistance test: High-quality enamel glaze is resistant to acid-base erosion and is suitable for humid and corrosive environments (such as seaside buildings and chemical plants).

- It is recommended to choose glass that has passed a weather resistance test of more than 48 hours to prevent the color from fading in a short time.

Key 5: Avoid incorrect cleaning methods to prevent surface damage

Misconception: Using acidic or alkaline cleaners to scrub enamel glass may corrode the glaze layer, causing the color to fade or even peel off.

Correct approach:

- Use neutral cleaning agents (such as glass cleaner and warm soapy water), avoid using strong acid/alkali cleaning agents (such as alcohol, scouring powder, and 84 disinfectant).

- Avoid using hard brushes or steel wool to scrub to avoid scratching the glaze surface, causing glaze wear or peeling.

- It is recommended to use soft cloth or sponge for cleaning. Gently wipe it.

Pitfalls to avoid when purchasing & maintaining enamel glass

1. Give priority to high-temperature sintering enamel process (600-800℃), refuse sprayed fakes, and ensure that the color does not fade.

2. Use inorganic metal oxide glazes (such as iron oxide, chromium oxide), avoiding low-quality organic dyes that are prone to fading.

3. Choose high-quality glass substrates (such as ultra-white glass and tempered glass) to ensure glaze adhesion and service life.

4. Outdoor glass must pass UV resistance and acid-base resistance tests to ensure that it does not fade or weather over long-term use.

5. Use neutral cleaning agents + soft cloth for cleaning to avoid acid-base corrosion and scratches from hard objects.

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