A composite door and frame need to be fitted by an experienced professional installer. The composite doors are fitted by drilling holes through the frame using a technical diagram to create the fixing positions. Checking the diameter of the screw fixings to ensure that your new front door is securely fixed into its place. Once the installation is carried out, the installer will ensure the gap on the lock side is no greater than 5mm so your home will achieve the most secure and robust composite door in the market.