Systems

Refurbishment Solutions

There are many situations when it can make more sense to refurbish and upgrade a building rather than demolish it and start again. Metal roofing is ideal for refurbishment as a replacement or over-cladding solution.  Each refurbishment solution can be tailored to the building owner's requirements and to the character of the project. The main categories of roof refurbishment are outlined below.

Built-up, insulated over roof system

This form of over-roofing is ideal for failing pitched roofs of any material. The new roof provides long, trouble-free life.  The system retains the old roof cladding for use as a liner with minimal disruption to the inside of the building.  Eurobar spacer brackets are attached over the old sheeting into the purlins to provide an insulation space.  New insulation is added to reduce heat loss and maintain internal temperature according to current building regulations. Finally, the external sheet is installed.  If required the existing roof covering can be removed and replaced with a metal liner panel in combination with improved insulation.

Metal standing seam pitched over-roof

Standing seam roofing is a well established, premium roofing system that can achieve a wide range of acoustic and thermal performances. The lightweight roof puts a limited amount of extra load on the existing structure making it ideal for refurbishment.  It is a ventilated system which is perfect for over roofing a failed roof that may have been compromised and subsequently contains water; moisture can escape the roof as vapour because of the inherent ventilation of a standing seam system.  It also offers an opportunity to enhance the building's thermal performance and change its appearance.  By increasing the amount of insulation beneath the external sheet, higher U-values can be achieved.

Flat to pitch framed roof systems

Flat to pitch conversions completely transform the appearance of a building. In some cases, they are the only effective way of waterproofing the existing roof structure but do require a detailed structural survey to be carried out. This is to ensure that the existing roof structure or supporting walls are capable of withstanding the additional loads which are transmitted from the new roof structure.  A flat to pitch roof conversion uses a lightweight galvanised steel frame to fit over the existing flat roof. The framework provides support for a new pitched metal roof.  The conversion can incorporate additional habitable space within the new roof structure which will depend upon the result of a structural survey and the layout of the existing services and access.  Additional low-density mineral wool insulation can be added on top of the old roof to improve u-values and reduce heat loss from the building and the new structure can support a standing seam system for the new roof, especially suitable where the pitch is low. For a greater pitch, a through-fix trapezoidal profile can be fitted.