Delta's Ground Gas Protection Products are suitable for residential structures, commercial structures, small buildings, Civil Engineering Projects & more. When building on land where ground gases are present, it is essential to take steps to minimise the chances of these dangerous gases entering a property. Building Regulations must be carefully followed. One of the most widely available options is a ground gas protection system. Ground Gas Protection systems are required when building on a contaminated site. To determine the level of risk, you will firstly need to access or commission a report. You can find more information in BS 8485:2015+A1:2019, which is the code of practice for the design of protective measures for ground gases for new buildings and extensions.