Dear Donny

Irish Daily Mirror - - SHOPPING - DIY EX­PERT DONNY SHERI­DAN AN­SWERS YOUR PROB­LEMS

Q

We had our roof retiled last year, but it rained when they were ce­ment­ing the ridge ones and we are now left with white marks. Any ideas how to re­move them?

Ash­ley Wood, via email

A

You will need to ap­ply a ce­men­tremov­ing acid wash. It’s not dif­fi­cult but you will have prob­lems with ac­cess to the roof. Make sure the acid wash doesn’t then af­fect your gut­ter­ing or down­pipes.

Q

Could you ad­vise what prod­ucts to use to get rid of black mould on my ceil­ing boards in the bath­room? We’ve had them for four years now.

Philom­ena Brown, via email

A

You need a mould killer or even bleach to re­move the marks. How­ever, you need to ad­dress the source of damp­ness which, be­ing a bath­room, is bound to be con­den­sa­tion caused by the pres­ence of steam. You will have to im­prove the ven­ti­la­tion, but if the walls are cold and the room small you’ll also need to in­su­late your ex­ter­nal wall to re­ally cure the prob­lem.

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