A sealed roof system is achievable using a vapour permeable underlay such as monarperm 700 if a minimum 2mm gap can be guaranteed between the sarking boards which should be a minimum of 150mm wide.
Scottish roof construction details.
Construction details for typical mansard roofs are shown in figure 6.
The top of the rafter is cut at an angle and nailed to the ridge board typically 175mmx32mm 7x21 2 inch mounted vertically.
Guidance and one method to meet some of the requirements of the functional standards set out in regulation 9 of the building scotland regulations.
Accredited construction details scotland 2007 directorate.
Scottish slate roofs have a number of characteristics which make them well suited to both the local climate and the nature of the material produced by slate quarries in scotland.
Wall ground floor junction.
A detailed visual overview of the range of roofing materials and techniques that are to be found in scotland.
Government accredited details developed by bre for local government search.
Roof slating tiling.
These include features such as diminishing courses random lengths and widths of slate single nailing and laying onto sarking board rather than battens figure 1.
The updated detail sets do not supersede previous versions but reflect the likely changes to scottish construction practices which meet or improve upon the design u value for walls floors and ceilings cited in the fuel package table of section 6 1 of the technical handbooks.
Information on our scottish handbook the details available.
Top of mansard roof coping cover this detail shows a condition where the top of the mansard meets a coping cover.
Characteristics and tests isbn 1 903570 60 3 published by.
This research report ties the geological properties of slate to its usability as a roofing material.
2 10 ground bearing floor slab.
The top edge of the pans are folded out to the height of the standing or batten seam then bent down 3 4.
Each rafter has a small triangular section referred to as birdsmouth joints cut out of them to allow them to fit neatly over the wall plate.
Building planning and design.