Saving Water For The Future
Adurel encapsulates your roof with a long term renewable membrane with the added advantage of being non-toxic to water and cooler to greatly reduce water losses due to evaporation.
Advantages of Adurel Rainwater Catchment System
- Thermoplastic coatings resist dirt pick up and stay
cleaner for long term cooling. - Easily cleaned and maintained.
- Utilizes existing drainage.
- Adabtable to any roof, including metal.
- Reduces bird loitering and nesting.
- Water can be used as gray water or made potable
with additional filtration. - Adurel roof systems are Energy Star, FM and UL rated and meet NSF-151 for rainwater catchment and recovery.
- Holds water in storage to reduce sewer system
overloads in times of heavy rainfall. - Savings on the Adurel and reduced water bills
can pay for itself in a few years.
For information and various case studies of schools, hospitals and commercial buildings use this link from the Massachusetts Water Management Authority
Example:
500,000 sq.ft. roof x 0.5618 = 280,900
280,900 x 55″ per year average rainfall = 15,449,500 gallons of recovered water
Choose the right cistern.
The size of the cistern depends on the amount of water to be collected and cost restraints. Choose a cistern that fits the needs of the water harvesting system. Collecting a small volume of water is better than collecting none.
| Cistern Type | Advantages | Disadvantages |
|---|---|---|
| Fiberglass Tanks | Prevents algae growth and evaporation, rust resistant, durable | Higher initial costs, degradable, requires exterior coating |
| Polyurethane Tanks | Various sizes and shapes, alterable, inexpensive, movable | Can deteriorate over time if not treated for UV radiation |
| 55 Gallon Steel Drums | Available, durable, moveable, great for small systems | Prone to corrosion, rust, and/or toxins |
| Galvanized Tanks | Inexpensive, attractive, moveable, alterable | Prone to rust, higher long term costs |
| Plaster Cisterns | Low profile, inexpensive, can alter color | Large footprint, unalterable, not able to be moved |
| Concrete Tank - ferrocement, stone or concrete block | Durable, permanent | Potential cracking, difficult to maintain |
Office buildings with sizes ranging from 145,000 square feet to 1.5 million square feet had and annual water usage of 3 to 43 million gallons. Based on the above formula these same buildings would recover 4 to 45 million gallons of water for recycling.
Costs
A rainwater harvesting system has higher initial costs than buying water, but the payback period is less than 1 to 2 years. Save up to 50% on the water bill by reusing water. The largest cost of the system is the cistern container. Construction costs can range from $250 to $2000.
Maintenance
An effective system requires minimal, but regular maintenance. Change the filters every month or two depending on use. Clean the inside of the cistern yearly. Minimize the amount of debris in the gutters and keep leaves out of the filters.
Download the Rainwater Catchment brochure
