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How do you remove a roof purlin to allow for a velux window? In this video a structural engineer explains what a purlin does, and how to remove it as part of a loft conversion.
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This video is for entertainment purposes and should not be construed as structural advice. Any structural alteration should always be designed by a competent structural engineer and signed off by a building control officer. Failure to do so may reduce the value of your property substantially and may impede the sale of your property in the future.