Remember, if you don't feel confident unfreezing your pipes, you can always call a plumber.
Turn on the taps - If no water comes out of any of the taps it's best to call a professional. If it's just one tap you can trace the pipe and try to thaw it yourself.
Switch on the heating - warm air will warm up the pipes. You could use an electric heater in very cold places, such as an attic.
Applying heat directly to pipes - for an exposed pipe you might want to apply a gentle heat. Once you know which pipe is frozen, warm it slowly using something like a hairdryer. Never use a direct flame or boiling water, as this could cause the pipe to burst.
Want to insulate your pipes? Great idea! We can help you.