Things to consider when using Nurashingles

The substrate provides the foundation for a successful system. The two most common substrate problems are movement and ponding. To alleviate these ensure when plywood is being used that:

The treated plywood substrate is at least 17.5mm thick, 20mm on decks, supported at 400mm x 400mm. The plywood must be tightly butted and staggered or brick pattern laid. Stainless steel fixings and glue bonding of the plywood must be used.
Ventilation is very important. It keeps the ceiling space cooler, and so limits substrate movement, as well as removing condensation buildup. A Nuravent every 20m2 is recommended but attention must be paid to placement relative to rafters to allow for cross flow air movement. Soffit and ridge vents can also be useful addition to assist with ventilation.
If drinking water is being collected a first flush diverted should be installed to reject possible roof deposits and stagnant or contaminated water.
Building maintenance is important. Annual cleans and visual inspections are recommended. Five yearly detailed inspections by a qualified Nuralite applicator is a warranty requirement.
Although Nuracolour is available in any colour, it is recommended that lighter colours are used (RV > 40) to keep the roof system cooler. As with any coating system, new coats will be required during the life of the Nuraply 3P system. Depending on environmental factors and the quality of the roof maintenance programme the coating will need recoating between every 5 and 10 years.

Download the Substrate Readiness Checklist