Mould caused by leaking gutter and broken roof tiles

without actually looking at the problem it is not possible to give a solution. is it a solid brick building i.e. no cavity? if so it will be built with lime mortar, this allows your walls to breathe, if it has been re-pointed or rendered with a cement based material, this stops your walls breathing and hold in damp. if it is water ingress in the structure of the building, it will dry at the rate of 1 inch per month. if it is caused by faulty brick work, gutter felt, drips, leaks or external forces to thermal board the walls will only cover up the dampness, unless you find the source it will cause it to come back twice as bad. you should not dry clothes inside as this increases the condensation internally, rooms should always be vented to reduce condensation. damp proof courses in solid brick buildings very seldom work as they are designed for rising damp, rising damp is misdiagnosed in over 70% of cases, more in older properties, your best bet is find a builder who understand older properties and how the materials used work to prevent water transfer from the external to the internal walls. good luck Alex

Hi there This is usually not an external problem, more a lack of ventilation, you need an extractor fan or you need to thermal board the external walls. It would be best to get a company that deals in condensation, usually a damp company. Do not dry your clothes indoors and always have the bathroom and kitchen doors closed, all these things add to the condensation problem which the mould feeds off. Regards Joseph

For every 1" of saturation into brickwork you are looking at 1 month drying. If the problem is fixed, the damp/ mould should be decreasing. Have you considered contacting your insurance company, they may be able to arrange assisted drying for you.