There are a number of conditions that need to be met for the conservatory to be exempt from planning permission but none that affect replacing your roof.
Planning permission solid roof conservatory.
A conservatory does not normally need planning permission as it is considered a permitted development.
You don t need planning permission to put a solid roof your conservatory however always make sure your conservatory framework is structurally sound and can take the weight of a new solid roof.
When replacing a translucent conservatory roof for a solid roof you must obtain building regulatory approval.
A change of use occurs when replacing a glass roof for a solid insulated roof as it causes the structure to be classed as permanent rather than temporary.
At the risk of oversimplifying the answer to do you need planning permission for a conservatory roof is no.
Any company you use should now be able to provide building regulations advice and sign off.
A solid roof on a conservatory also makes it easier to regulate the temperature in the room helping to keep it cooler in the summer with less sunlight beating down on overhead glass all day.
New temporary changes also mean that you can build a larger rear extension up to 6m for attached and 8m for detached properties so long as you notify surrounding properties using the neighbour consultation scheme.
Planning regulations were changed to allow conservatories to have a tiled solid roof back in 2010.
So the short answer to the question of whether or not you need planning permission to install a tiled roof on your conservatory is yes.