My OH has just swept the chimney in our house, the fireplace needs a grate etc which his brother is going to make for us. There are two blocked up fireplaces upstairs and another in our other downstairs room which is unblocked but not swept and not likely to be used.
Do we need to unblock these or can we just go ahead and get the downstairs fire done?
There are four chimneys in a row on the roof and smoke is only coming out of one.