When people are thinking about a commercial roofing contractor , they consider the cost, the beauty and how much maintenance they may have to do to the roofs. Very few people think about the quality of the harvested water the roof will produce as an important factor. This is unfortunate because good quality harvested rainwater can be very useful in supplementing the water supply in the home. However, if you want good water from the roof, you need to be choosy about the roofing material. Here are some of the best roofing materials for rainwater collection.

Metallic roofs

Metallic roofs are considered to be among the best when it comes to water harvesting. However, the purity of the water that is harvested on a metallic roof will depend on whether the roof is painted or galvanized. Painted metallic roofs may not be suitable for water harvesting, especially of the paint happens to have lead compounds. However corrugated iron sheets, copper and aluminum are great metallic roofing materials for water harvesting. The corrugated structure of metallic roofs makes it very easy to harvest water.

Green roofs

Green roofs are quite rare because of the process that goes into their installation. However, one of the advantages that seem to result from using these roofs is the fact that they have superior quality of water. The water that is harvested from green roofs has a low concentration of harmful minerals such as nitrates making it very suitable for agricultural use. You can find a good miami roofer who knows how to install this type of roof.

Cedar shakes

Cedar shakes are classified among the unsuitable roof materials for people that want to harvest rainwater. This is because the manner in which these shingles are installed on the roof makes it difficult to create a steady stream of harvested water. Also, when you use this material, the paint and other chemicals that are used to treat, and water proof could get absorbed in the water that makes it unhealthy.

Asphalt shingles

This is one of the most popular roofing materials in urban homes. People love asphalt shingles because they are very durable and need little maintenance. However, the chemicals that are used in the manufacture of the tiles make them a very poor material for water harvesting.

These are just a few of the common roofing materials and their suitability when it comes to water harvesting. When looking for the ideal roofing material, you should ask your roofer in miami about the best material. Visit commercial roofer for more details about miami roofing.