Roof beams

Abstract

A roof beam construction for use in constructing conservatory roofs comprises a glazing bar and upper and lower cappings therefor having gaskets along edges thereof between which roof panels are to be retained and means for locating the cappings on the glazing bar, wherein the upper capping has a top and generally flat depending sides, the top being in the form of a duct having a base and a decoratively profiled top and wherein the lower capping is formed in two parts, the first having the gaskets on its edges and having its base extending beyond its sides to provide locations for attachment of the second part which is shaped to provide ledges on opposite sides thereof.

1 . A roof beam construction for use in constructing conservatory roofs comprising a glazing bar and an upper capping therefor having gaskets along edges thereof for sealing on roofing panels retained on the glazing bar and means for locating the capping on the glazing bar, wherein the upper capping has a top and depending sides, the top being in the form of a duct having a base and a decoratively profiled top.  
     
     
         2 . A roof beam construction as claimed in    claim 1   , wherein the depending sides of the upper capping are generally flat.  
     
     
         3 . A roof beam construction as claimed in    claim 1   , further comprising a lower capping mounted on the glazing bar and having gaskets along edges thereof, roofing panels being retainable between the respective gaskets of the upper and lower cappings.  
     
     
         4 . A roof beam construction as claimed in    claim 3   , wherein the lower capping is formed in two parts, the first having the gaskets on its edges and having its base extending beyond its sides to provide locations for attachment of the second part which is shaped to provide ledges on opposite sides thereof.  
     
     
         5 . A roof beam construction for use in constructing conservatory roofs comprising a glazing bar and upper and lower cappings therefor having gaskets along edges thereof between which roofing panels are to be retained and means for locating the cappings on the glazing bar, wherein the lower capping is formed in two parts, the first having the gaskets on its edges and having its base extending beyond its sides to provide locations for attachment of the second part which is shaped to provide ledges on opposite sides thereof.  
     
     
         6 . A roof beam as claimed in    claim 1   , wherein the upper capping has formations depending from the base of its profiled top for engagement with the glazing bar head to retain the capping thereon.  
     
     
         7 . A roof beam as claimed in    claim 1   , wherein gaskets for the upper capping are on inwards returns of the capping sides, whereby when in place on a glazing bar, the gaskets are concealed from view.  
     
     
         8 . A roof beam as claimed in    claim 7   , wherein the inwards returns are resiliently flexible.  
     
     
         9 . A roof beam as claimed in    claim 3   , wherein the lower cappings rely on gasket strips on their free edges to overlie the glazing bar cross bar ends to be trapped between the glazing bar and the roofing panels thereon.  
     
     
         10 . A roof construction comprising roof beams as claimed in    claim 1   , with or without jack rafters, and supporting glazing panels therebetween.  
     
     
         11 . A roof construction comprising roof beams as claimed in    claim 5   , with or without jack rafters, and supporting glazing panels therebetween.