Study says that bird droppings do not affect car paint

Article by Christian Andrei, on May 3, 2011

Anyone who has ever had their car exterior damaged due to bird droppings will want to know what the research by UK's leading car care expert Autoglym says about the issue. For instance, Autoglym has established that bird dropping 'acidity' doesn’t have an effect on paintwork. The damage stems from the result of cooling paint lacquer that contracts and moulds around deposits.

Autoglym said that to avoid permanent damage, motorists have to act quickly. Autoglym disproved the notion that the corrosive property in the deposit has caused the bodywork to receive etching of body droppings.

What actually happens is that the damage comes from the paint lacquer contracting upon cooling and moulding to the uneven texture of the hardened deposit.

When paint lacquer warms, it becomes softer and it expands. The heat also dries and hardens any bird droppings on the surface. Autoglym's researchers found that when lacquer paint cools, it contracts, hardens and moulds that surround the texture of the bird dropping.

The moulding, when viewed at a microscopic level, looks like dulled or etched paintwork. The reflection is disrupted by the unevenness of the surface. This is not like the undamaged paint around it that provides a clearer reflection. Autoglym conducted tests on it, from the water being strongly acidic, neutral and strongly alkali.

However, the bird dropping substitutes emphasized the negligible differences in the damage that came about as a result. Autoglym also noted that there were differences in paint damage when the substitute bird deposits had varying degrees of grain-to-liquid content. Its texture is grainier due to light distortion (dullness) when the paint moulded around it.

For limited production, the owner can make use of xax and polish treatments (which protect against chemical attack from acid raid and UV sun damage. For instance, it example a limited protection from the paint moulding to bird droppings, They also appear easier to remove.

Topics: study

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