Q I am using crosshead Phillips screws in a timber partition but the heads keep getting chewed up, damaging the screw bit, and the screws can't be removed. Help.
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Q The communal stairs to my tenement flat have a terrazzo marble effect. They were put in years ago and look very dirty. What is the best way to clean them?
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Q Since I had my new bathroom fitted in June, the tap water won't ever run beyond lukewarm in the mornings. The rest of the day it is fine. Why is this?
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