Iíve bought a bifold door that turned out to be top-hung, instead of bottoms-rollered (donít ask!) It is for an existing opening (2.4m wide x 2.1 high), where a sliding door was previously. Will the existing lintel be enough to support the weight of the door? (Approx 230kg- double-glazed aluminium)
The current lintel is F17, 190mm x 70mm pine.
The wall is brick-veneered, load-bearing, tiled roof (trussed)