Hello everyone,
I have recently noticed that the colors of my Billy shelves, especially the white versions, tend to change over time. I’m wondering why this happens.
Could environmental factors like light or humidity be affecting the material? Or are there chemical processes in the paint or coating that cause discoloration?
I’m particularly interested in possible aging processes of the material, since the shelves remain in nearly the exact same position with only minimal movement, yet the color still changes.
Does anyone have a well-founded explanation for why the color of Billy shelves changes over time? Are there perhaps differences between various surface finishes or production batches? I would appreciate your insights, experiences, or even technical explanations.
I have recently noticed that the colors of my Billy shelves, especially the white versions, tend to change over time. I’m wondering why this happens.
Could environmental factors like light or humidity be affecting the material? Or are there chemical processes in the paint or coating that cause discoloration?
I’m particularly interested in possible aging processes of the material, since the shelves remain in nearly the exact same position with only minimal movement, yet the color still changes.
Does anyone have a well-founded explanation for why the color of Billy shelves changes over time? Are there perhaps differences between various surface finishes or production batches? I would appreciate your insights, experiences, or even technical explanations.
In my experience, the color change in Billy shelves can mainly be attributed to two factors: UV light and chemical aging of the material surface.
The melamine resin or plastic coating used tends to fade or turn slightly yellowish when exposed to sunlight over a longer period. This is a photochemical reaction that affects the color pigments. Besides UV exposure, humidity and dust buildup can also alter the surface if it is not cleaned regularly.
The melamine resin or plastic coating used tends to fade or turn slightly yellowish when exposed to sunlight over a longer period. This is a photochemical reaction that affects the color pigments. Besides UV exposure, humidity and dust buildup can also alter the surface if it is not cleaned regularly.
Zaran10 schrieb:Exactly – light especially plays a crucial role.
Could environmental factors such as light or humidity be affecting the material?
I fully agree and would like to clarify the explanation further:
The color change in Billy shelves is primarily caused by oxidation and UV-related degradation of the melamine or lacquer coating. This process can alter the chemical bonds of the dyes or resin.
Technically, this involves photo-induced polymer chain reactions that interact with oxygen, changing the surface properties. The visible result is often a slight fading or a yellowish tint.
Different production batches and surface treatments (painted vs. laminated) can either intensify or reduce this effect. Therefore, it is also a matter of the materials used and their quality.
The color change in Billy shelves is primarily caused by oxidation and UV-related degradation of the melamine or lacquer coating. This process can alter the chemical bonds of the dyes or resin.
Technically, this involves photo-induced polymer chain reactions that interact with oxygen, changing the surface properties. The visible result is often a slight fading or a yellowish tint.
Different production batches and surface treatments (painted vs. laminated) can either intensify or reduce this effect. Therefore, it is also a matter of the materials used and their quality.
It is interesting that the discussion here focuses almost exclusively on physicochemical processes.
This raises the question of whether it might also be a design flaw on IKEA’s part – do they use lower-quality materials that are deliberately designed to look less appealing after a few years? A subtle incentive to buy new furniture?
Of course, the chemical explanation is correct, but I suspect that market strategies also play a role. New, more durable finishes cost more, and perhaps IKEA does not want to promote this.
This is not to say that the shelving unit is bad, but I often find such considerations are underestimated.
Gauel schrieb:
photochemical reaction that attacks the color pigments
This raises the question of whether it might also be a design flaw on IKEA’s part – do they use lower-quality materials that are deliberately designed to look less appealing after a few years? A subtle incentive to buy new furniture?
Of course, the chemical explanation is correct, but I suspect that market strategies also play a role. New, more durable finishes cost more, and perhaps IKEA does not want to promote this.
This is not to say that the shelving unit is bad, but I often find such considerations are underestimated.
The question of why the colors of Billy change can be answered from a technical perspective as follows:
The shelf surfaces are mainly made of coated particleboard with a melamine resin finish. Melamine is resistant to scratches and moisture, but it is not completely UV-resistant.
This is a well-documented mechanism among experts. Together with dust or grease layers that accumulate indoors, the appearance can change significantly.
Ideally, the shelves should be cleaned regularly with a suitable cleaning agent and direct sunlight should be avoided.
The shelf surfaces are mainly made of coated particleboard with a melamine resin finish. Melamine is resistant to scratches and moisture, but it is not completely UV-resistant.
vinli schrieb:
photoinduced polymer chain cross-linking that reacts with oxygen
This is a well-documented mechanism among experts. Together with dust or grease layers that accumulate indoors, the appearance can change significantly.
Ideally, the shelves should be cleaned regularly with a suitable cleaning agent and direct sunlight should be avoided.
From a technical perspective, this is a typical aging process of the surface coating. Here is the detailed explanation:
Billy shelves are usually made of particleboard coated with melamine. The melamine resin layer is a thermosetting coating that is resistant to mechanical wear but sensitive to light and heat.
UV radiation from daylight causes the molecular structure of the resin matrix to break down. The polymer chains are cleaved, leading to a color change, usually darkening or yellowing, due to altered light absorption.
Additionally, reaction with oxygen (oxidation) can damage the pigments or the resin bonding structure. Depending on the color (white, beige, or other shades), the effects are visible to different degrees.
The indoor climate also plays an important role: high humidity can accelerate aging, as can high temperatures.
I would be interested to know if you have the shelf placed near a window or in a room with very stable temperature and low light levels?
If so, it might be worth checking whether discoloration is reduced by covering the shelf with UV-protective films.
Billy shelves are usually made of particleboard coated with melamine. The melamine resin layer is a thermosetting coating that is resistant to mechanical wear but sensitive to light and heat.
UV radiation from daylight causes the molecular structure of the resin matrix to break down. The polymer chains are cleaved, leading to a color change, usually darkening or yellowing, due to altered light absorption.
Additionally, reaction with oxygen (oxidation) can damage the pigments or the resin bonding structure. Depending on the color (white, beige, or other shades), the effects are visible to different degrees.
The indoor climate also plays an important role: high humidity can accelerate aging, as can high temperatures.
I would be interested to know if you have the shelf placed near a window or in a room with very stable temperature and low light levels?
If so, it might be worth checking whether discoloration is reduced by covering the shelf with UV-protective films.
Zaran10 schrieb:This detailed explanation should hopefully address your question exactly.
Does anyone have a well-founded explanation for why the color of Billy shelves changes over time?