This is because adding a solid roof to your conservatory changes its classification from a temporary structure to a permanent one.
Replacing conservatory roof with solid roof planning permission.
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.
Replacing an old glass or polycarbonate conservatory roof with a new solid tiled roof does not require planning permission but it does require building regulatory approval.
The design and engineering behind the guardian warm roof system means that it is a lightweight replacement.
Most new build conservatories with either a solid tiled or glazed roof will not need planning permission because they are covered under what is known as a permitted development.
Prior to this change in regulation the law stated that to be considered a conservatory 75 of the roof needed to be translucent in order for the building to be constructed without planning permission.
Replacing your conservatory roof shouldn t require building regulation approval so long as you are not blocking ladder access to a loft or roof extension window especially if it was designed as a fire escape for example.
There are just some limits and conditions regarding placement and size which you can find details of on the government s planning portal.
This may necessitate planning permission.