A Novel Technique Optimizing Polymer Pouches for a Wildfire- Resistant Roof Design

System Design
Research
Problem Solving
Sustainability

In a wildfire, a common ignition point of a house is the roof deck because temperatures up to 700-800°C can exceed the combustion point of the plywood decking (300-600°C), resulting in the complete destruction of the house. Protecting these roofs could significantly reduce home losses during wildfires. This project focuses on a novel technique to design a protective layer within the roof structure, using polymer pouches to prevent the roof deck from igniting. The pouch absorbs and retains large amounts of water, which can provide a cooling effect, preventing ignition of the roof deck under the extreme fire heat. Laboratory burn tests of the pouches simulate a typical steel roof often required in fire zones. A variety of polymer pouch sizes and compositions have been examined, to maximize protection while minimizing cost and weight. A pilot-scale version using wood dog houses with the fire- resistant roof modification in an open-burn (conducted by the Forest Service) is planned in the future.

1 Lifts 

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