In 2009, U.S. Energy Secretary Steven Chu (winner of the Nobel Prize in physics 1997) gave a speech to his former Colleagues at the Lawrence Berkeley National Laboratory in London concerning reducing global warming. One of the key solutions he proposed was painting black roofs white to reflect sunlight, a step that he said could “make a huge difference to global warming.”
It seems like such a small step, but white roofs reflect so much heat during the summer months that a drastic reduction of energy consumption can be achieved. According to the Cool Roof Tool Kit produced by the State of California, black asphalt roofs only reflect 5%-11% of the sun’s heat. Therefore, they absorb up to 95% of the sun’s heat and transfer it into the buiding. Painting the roof with premium white elastomeric coating can increase the reflectivity to 80%, reducing energy usage and wear on air conditioners.
Duro-Last membrane beats even the best elastomeric coating, with an initial heat reflectivity of 87%, making it one of the most reflective roof products in the world. In warmer Southern states, replacing a black asphalt roof with white Duro-Last material can pay for itself in energy savings in as little as 3 years.
Plus, Duro-Last is an amazingly durable roof with an outstanding 15-year warranty. It is a smart investment which will pay for itself. And if you are in the position of needing to upgrade a failing roof, upgrading to a Duro-Last single-ply roof is a fail-proof way to increase your building’s value and save you money for as long as you own it.