Scottish Roof Construction Details

Typically a scottish practice the roofing underlay is laid directly over a series of sarking boards fixed to the roof rafters with the roof slates nailed directly to the sarking boards.

Scottish roof construction details.

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. Local government and communities directorate part of. This research report ties the geological properties of slate to its usability as a roofing material. 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.

Government accredited details developed by bre for local government search. Guidance and one method to meet some of the requirements of the functional standards set out in regulation 9 of the building scotland regulations. Characteristics and tests isbn 1 903570 60 3 published by. Robustdetails is the alternative to pre completion sound testing in new attached dwellings under the authority of statutory instruments 2004 1465 1466.

The top of the rafter is cut at an angle and nailed to the ridge board typically 175mmx32mm 7x21 2 inch mounted vertically. Accredited construction details scotland 2007 directorate. 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. 2 10 ground bearing floor slab.

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. Top of mansard roof coping cover this detail shows a condition where the top of the mansard meets a coping cover. A detailed visual overview of the range of roofing materials and techniques that are to be found in scotland. Wall ground floor junction.

Information on our scottish handbook the details available. 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. Construction details for typical mansard roofs are shown in figure 6.