Second fix

Second fix technically starts with the job of applying an internal wall finish/covering, and it is usually plaster. 

At this stage the fitting out of all the bathrooms as well as kitchen and other rooms can take place. From a plumbing point of view, the heating system will be commissioned, the fixtures and fittings (sanitaryware, taps etc.) and appliances connected. As the walls have now been plastered, there is no means to correct any errors.