Why it's popular here
Water is precious in Placitas. Many homeowners collect roof runoff for gardens, trees and landscaping. A flat roof with canales makes it easy to direct water to barrels or a cistern.
Setting up
- Make sure the roof drains toward the canales you want to collect from
- Add screens or first-flush diverters to keep debris out
- Size barrels or cisterns for summer storm volume
- Route overflow away from foundations and walls
Coatings and collected water
Most roof coatings are made to protect roofs, not to contact drinking water. If you plan to use roof water for anything beyond landscape irrigation, ask about coatings specifically rated for potable water catchment and follow the manufacturer's cure and rinse instructions. For garden use, let a new coating cure fully and divert the first few rains before collecting.
Keep the roof clean
Pollen, dust, needles and bird droppings all wash into your collection system. Washing the roof and cleaning canales regularly improves water quality and helps the coating last.
See canale and scupper repair.
Questions about coatings and water catchment? Call (505) 588-5928.
Common questions
Can I collect water right after a new coating?
Wait for the coating to cure fully and divert the first rains. Follow the product's instructions.
Is collecting rainwater legal in New Mexico?
Residential roof catchment is generally allowed in New Mexico. Check current state rules if you plan a large system.