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You might be wondering how to install a pre-vented soffit, this process is the same when installing a non-vented soffit, which we discuss in my previous blog entitled ‘how to replace a soffit’. I think it is therefore more important for us to discuss the reasons for installing a vented soffit in the first place, and why ventilation is such an important part of any roof line job.
One specified requirement set out by the British Building Regulations Act in 1985, is that adequate ventilation of the roof space through eaves must be adhered to for all new build constructions. This is required for England, Wales, Scotland and Northern Ireland.
The air gap specified is the gap or gaps equivalent to a continuous gap of the specified size, and can be achieved in many ways:
• For roof pitches greater than 15 degrees, document F specifies 10mm of continuous unobstructed airflow at eaves level on both sides of a roof for adequate cross ventilation.
• For roof pitches less than 15 degrees, including flat roofs, the equivalent of 25mm of continuous unobstructed airflow at eaves level on both sides of a roof is adequate for cross ventilation. Similar application of ventilation is strongly regarded as best practice procedure in refurbishment projects also.
At Speedy Plastics and Resins we supply a range of ventilation systems to meet these building regulations.
For further information on ventilation, and the products that we stock, that can help with these issues, please do not hesitate to contact Speedy Plastics and Resins on local number (0844) 8586670, and our team will be delighted to help you.