All timber doors require periodic maintenance. If you find any raised woodgrain, discolouration, peeling or cracking, then you’ll need to refinish it and possibly carry out minor repairs. Swollen wood may need sanding or trimming. Also check the ironmongery is in good order – a multipurpose lubricator should ease stiff locks. If more extensive renovation is required, call in an expert craftsperson, who can also upgrade draughtproofing measures.