Minimum Roof Pitch For Loft

In relation to ceiling height 2 2 metres across the central part of the room is preferable in bedrooms and living room conversions while a minimum of 1 8 metres usually 2 metres from floor to ceiling is required by law at the top of the staircase.

Minimum roof pitch for loft.

Where a property already has a steep pitched roof the eventual loft conversion will be much easier and ideally you are looking for headroom in the loft of around 2 2 to 2 6 meters. The ideal scenario is if you can stand upright in the centre of your loft and raise your arm above your head without crunching your hand on the inside of the roof. You could also opt for a pvc flat roofing membrane. Let s assume that our loft is 8 wide and the peak of the roof is 4 above the loft.

The structure of the roof lofts with a minimum head height of 2 1m from top of existing joists to underside of ridge which should achieve 2m head height approximately are usually seen as fit to convert although obstacles like chimneys or water tanks as well as the pitch of the roof can also affect this decision. With a gable roof the roof height at the walls will be 16 below the peak or 2 8. A pvc roof is a lot more durable and longer lasting that a conventional epdm rubber roofing system. So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum.

Let s also assume we chose a 4 12 pitch 18 4. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.