What does it mean if a slate roof is ‘nail sick’?

If your property starts to regularly lose roof tile it could be suffering from ‘nail sickness’.

Nail sickness is a term used for a roofing problem caused by the natural deterioration of the nails holding the roof tiles in place.

It is a problem that naturally occurs over a long period of time as the metal nails rust and corrode. The problem is worsened in older buildings by the fact that the nails are often of a poorer quality than those used today.

What does nail sickness mean for my roof?

Nail sickness can be a serious problem, as generally all the nails in the roof will have been installed at the same time, so if one fails, then the rest are usually soon to follow.

When roof nails fail, the tiles on your roof are no longer secure or safe, so it is not a problem that should be ignored or left to worsen. Falling tiles can be very dangerous and loose or missing tiles can let water into your home, causing leaks, damp, and structural damage over time.

Identifying and fixing nail sickness

One or two tiles becoming loose and falling off your roof doesn’t necessarily mean your roof has nail sickness.

A professional roofing contractor or surveyor will need to inspect the condition of your roof to see the extent of the damage. One or two loose tiles could be caused by incorrect installation or extreme weather. However, if a considerable number of your roof tiles are loose or showing signs of nail deterioration then this is probably nail sickness.

If it is only a small area of your roof that is being affected by nail sickness, then maintenance and repairs may be carried out on this area only. Generally, nail sickness will affect the entire roof, in which case you will need to have your whole roof stripped and re-slated.

If you require slates for your roof, here at All Slates we stock a huge range of quality roofing tilesto suit any property.

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