Stephen Reed
125 mm on flat roofs and 300mm in loft spaces
Fitting a new slate pitch roof
Posted by David Lewis, on
What are the minimum insulation requirements
Andrew Pae
Hi David, Not sure what type of roof it is, I would recommend a good quality breathable underlay, most manufacturers are now insisting upon a 50mm gap between the underside of the slates and the underlay, this usually requires counter battens being fitted after underlay and before slating battens. I would recommend as much ventilation as possible, such as eaves ventilation and ventilated dry ridge. Good luck. Andrew.
