How Catnic’s Thermally Broken Lintels can be used to achieve Part L Building Regulations. Gallery How Catnic’s Thermally Broken Lintels can be used to achieve Part L Building Regulations. TopTips How Catnic’s Thermally Broken Lintels can be used to achieve Part L Building Regulations. Amber Chetwynd2024-02-28T13:40:21+00:00 As steel is a good conductor of heat, the [...] How Catnic’s Thermally Broken Lintels can be used to achieve Part L Building Regulations.Amber Chetwynd2024-02-28T13:40:21+00:00