Protecting your roof during the winter
Expert advice from Onduline
Wind uplift loadings
Tested to wind speeds
The Onduline products fixing specification’s in relation to wind loadings have proved themselves more than capable in dealing with even UK extreme gales and weather events being tested to withstand wind speeds of up to 120mph (192kph - 53.6 m/s); therefore the risk is more to the integrity of a building and its roof design. Onduline sheets will rarely have part company from the roof structure; rather it is the buildings structures which are likely to fail resulting in their damage beyond economical repair.
ROOF DESIGN IN EXPOSED UK AREAS OF HIGH WIND AND SNOW LOADINGS
Leading weather performance
Onduline roof coverings weathering and service performance worldwide confirms Onduline roofing products are both durable and resilient resulting in brand leading weathering performance.
Structural faults in the roof and building design are normally associated with roofing failures.
Correct installation
For example: A timber frame building which has been designed for use in a typical low elevation sheltered location and which under normal conditions will provide years of trouble free service; However, the same building erected on an exposed elevated coastal site and being subject to much higher wind and snow loadings without upgrading the building’s structural design is likely to be at risk of structural failure; which can be both dangerous and expensive to resolve far exceeding the cost of upgrading the original roof structure.
Causes of roof failure during gales and snow loading is the failure to fix the product correctly in accordance manufacturers fixing instructions. We therefore advise that the fixing of your Onduline roofing product is checked to ensure it is in compliance with the relevant fixing instructions.
Snow loadings
Design consideration
Generally, the dominant load factor requiring design consideration on a roof following a fall of snow is the additional weight it imparts on the roof structure. This load combined with wind loading, ice melt and the increased weight of compacted snow on a roof structure an d the effect of prolonged exposure to below freezing temperatures on roof structures must be reflected in the design strength requirement of a building’s roof section.
Onduline Lightweight roofing systems
Onduline has a range of lightweight roofing solutions that are suitable for extreme weather conditions. We have two options below that would be ideal for your DIY project, whether a garden shed, summer house, children's playhouse or any other type of outbuilding. Find out more below.