purlin roof

purlin roof

A roof construction in which purlins are laid between the principal rafters; they support the boards that run between the ridge and eaves of the roof.
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Such invitations to tender for the supply and installation of sandwich wall panels with polyurethane core as thermally insulated wall system, a trapezoidal roof structure and roofing of a tanker place as steel purlin roof and all other services required for a proper and professional execution.
If your home is pre-1965, it's likely you have a rafter and purlin roof which is ideal for loft conversion.
Rafter and purlin roofs, built pre-1965, are better for loft conversions as the pitch is usually reasonably steep and there are relatively clear spaces between the supporting framework.