Established in 1979, specialise in the design and installation of fully supported hard metal roofing, using Copper, Zinc, Stainless Steel, Aluminium and Titanium.
We can also install the supporting substructure, timber framing, gutters and downpipes.
In response to ventilation/condensation and wind-loading issues, in 1994 we developed our own ventilated Batten Roll and Standing Seam systems for use with all of the hard metals. With this system, the air-permeable joints keep internal and external air pressure in equilibrium, thus minimising the effects of wind. In traditional systems this state does not exist and when external pressure is lower than internal pressure upward deflection occurs, which can cause metal fatigue, wind rattle or disengagement of panels.
Ventilation/Condensation
Because joints perform as ventilators, construction can be either warm roof or cold roof; given in the latter case an air-permeable fixing surface is provided e.g. square edge boarding (sarking).
Unlike conventional eaves ventilation where air has to move across the full roof, decreasing in efficiency as the roof pitch flattens; with our ventilated system air only has to move across half the width of a panel. High internal air pressure at the eaves is also eliminated.
Capillary/Thermal Pumping
Air pressure in equilibrium and absence of tightly formed seams, eliminates this risk especially on low roof pitches.
Thermal Expansion and Contraction
Because of the low wind-load effect, panels do not require restraint at the eaves therefore long panels are free to move.
Bre Reports
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Together with many other listed buildings, Liverpool Metropolitan Cathedral,
Brighton Rail Station and St Aloysius Church in Glasgow have been re-roofed using our ventilated batten system, approved for use by both English Heritage and Historic Scotland, and was the preferred system used in the new-build Perth Concert Hall.
