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Acid rain causes acidification of lakes and streams and contributes to damage of trees at high elevations (for example, red spruce trees above 2,000 feet in elevation). In addition, acid rain accelerates the decay of building materials and paints, including irreplaceable buildings, statues,and sculptures that are part of our nation's cultural heritage. Prior to falling to the earth, SO2 and NOx gases and their particulate matter derivatives, sulfates and nitrates, contribute to visibility degradation and impact public health.
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Materials
Acid rain and the dry deposition of acidic particles are known to contribute
to the corrosion of metals and deterioration of stone and paint on 
buildings,
cultural objects, and cars. The corrosion seriously depreciates the objects'
value to society. Dry deposition of acidic compounds can also dirty buildings
and other structures, leading to increased maintenance costs. To reduce damage
to automotive paint caused by acid rain and acidic dry deposition, some
manufacturers use acid-resistant paints.
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