Adamuk

Hi guys looking for help/advice on my conservatory roof, at the moment it has a plastic roof but I’d like to replace it with a osb board fibreglass roof and plasterboard the inside of the roof, it has wooden beams does anyone know whether the wood framing would be able to hold the extra weight or would the wood framing have to be strengthened somehow? Wood beams are 6x2 or 6x1 not sure. thanks