Flat To Pitched Roof Conversion

by Practical Roofing

A common reason a flat to pitched roof conversion is opted for, is that the old roof would be very expensive to replace. When carrying out this kind of project, new, lightweight, modular structures are built onto the existing roof structure. 

The new structure which can be either timber or metal adds an increased weight to the building which is taken into consideration when designing the conversion. 

The new pitched structure, whether in timber or metal is relatively light weight and is assembled on the flat roof itself. 

The basic steps to a flat to pitched roof conversion using a steel truss are as follows:

• A lightweight steel truss is assembled and erected on site. 
• This framework is then mechanically fastened to the building structure. 
• Usually it is then covered in a breathable membrane and battens. At this stage insulation can also be fastened. 
• Lightweight tile strips are then installed. Clay tiles or other coverings can be used as an alternative, but added weight must be taken into account. 
• The supporting steelwork and any additional battens for the aluminium soffit and facia are also installed at this time. 
• The aluminium soffit, fascia and rainwater goods can then be installed in one operation. 
• The installation of down pipes, drain adaptors and new ground drainage can be completed once the scaffold has been removed.