Spray foam is made by combining two liquid chemicals, this chemistry requires a 1:1 ratio to mix properly and to obtain the optimal properties. When applied correctly spray foam is a product that offers many benefits, but if misapplied, may cause issues that become hard and expensive to remedy. The best course of action is to prevent issues from occurring. Therefore, relying on the installer alone to make sure the foam is being properly manufactured is not an adequate solution. Along with experienced sprayers RRSO's spray foam equipment is designed to mitigate potential issues. This technology is called Ratio-Assurance. This system consists of inline sensors that monitor the materials in real time and automatically shuts down the machine if potential issues are detected. At RRSO we use Ratio-Assurance on all our machines.