Accurate Roofing Wales Ltd
Professional roofers
MECHANICALLY FIXED RIDGE TILES
Traditionally ridge tiles on roofs have been bedded in mortar. British Standard 5534 now mandates that, on new roofs the ridge tiles must be mechanically fixed. This usually means screwed down to fully secured timber battens.
Though this regulation only applies to new buildings or where an exiting structure is completely re-roofed, there are advantages to choosing to use a mechanically fixed ridge tile system even on a roof repair.
EXTRA SECURITY
It is a fact that wind speeds are increasing in the UK due to the effects of global warming. Some projections show that wind speeds could increase by as much as 37% in the coming years [source: Cardiff University & nature.com].
MOSTURE & ROT
In modern well-insulated homes moisture vapour generated by activities such as washing - and even breathing - creates a build up of moisture vapour which tends to rise into the roof space by convection and air pressure. When this moisture reaches a barrier it can cause interstitial condensation - water trapped in the building fabric. This can lead to mould growth, dampness, rot and loss of thermal insulation. Mechanically fixed ridge systems are designed to be rain-shedding but moisture permeable.
