Roofers generally favour wet mortar for fixing hip and ridge tiles. That’s inspire of the fact that dry ridge systems are faster and easier to install and can be used in all weathers. All that, however, is about to change.
The NHBC has taken the unusual step of issuing new guidance ahead of a published change to the standards. So, what’s going to happen?
Due to the huge sums paid out on insurance claims over the past few years with by far the largest issue related to mortar failure on pitched roofs.
So serious is the issue that the NHBC has changed it’s guidelines.
The traditional fixing method for hip and ridge tiles involves the use of deep-bed mortar, and it is the failure of this mortar that causes so many problems.
Cracking of the mortar cAn result simply from slight movement that occurs as new buildings settle. Mortar is not tolerant of movement and can crack of de-bond, making the tiles insecure particularly in high winds.
In the new recommendations the NHBC is very precise in its instruction on how any mortar used on a roof should be made up.
Continue to use mortar for bedding, but, in addition, use mechanical fixings for all ridge and hip tiles.
Use a complete dry fix system.
Other obviouse benifits include.
Better ventilation ofentire room roof space.
A maintenance free solution.
Long term cost effective.
Uniform appearance across the entire roofs ridgesystem.
No worrie of increased frost damage to weak mortar.
Fora further advice of to request a free quotation on this of any of your roofing and property maintenance needs please get intouch today as we will be happy help at anytime.