If you are carrying out work to an existing pitched roof you may want to check that you don't need to get building regulations approval before you start the work. There are instances when work has been completed without this approval, where the owner of the home has incurred a fine for not using the right roofing supplies.
As well as the extent of the repairs, local conservation building regulations might also apply
In normal circumstance you can use the rule that if a repair to the roof is less than 25% of the total surface area of the roof, you will not need to apply for buildings approval.
Instances in which you will need approval include:
€¢ The performance characteristics of the roofing material will be different to the current roofing material in the event of a fire
€¢ Any structural alterations are carried out
€¢ More than 25% of the roof surface will be replaced so the thermal insulation will have to be improved.
It's important to bear in mind that all works on a roof should be carried out by competent persons so as not to affect the structural integrity of the roof. Alteration of the roof structure can be dangerous if not supported correctly, and the roof can actually move or even collapse if the work is of a significantly poor standard.
While some improvements do not need building regulations approval, it is also worth looking at them so that you can take advantage of any that can actually save you money in the long run. Look at upgrading your roof insulation with some of the modern hybrid insulation/breathable membranes such as those from Actis and if you have existing problems with damp in the area under the roof, upgrading your breathable membrane alone would be helpful.
A tile vent installed in the roof will also not require approval but will increase the rate of airflow and would further reduce any problems with excessive moisture.
