Yes, TimberTech decking can be installed in cold weather, but the installation requirements may change a bit depending on the temperature. For example, for temperatures below 45 degrees Fahrenheit, pre-drilling is required for all TimberTech PRO and EDGE products when face fastening. For TimberTech PRO and EDGE, the gapping requirements also change depending on the temperature. You can find those specific requirements in the decking Installation Guides. We always recommend contacting a professional builder or contractor before starting your deck project.