Raising the height of my conservatory

[Marlinb]

Hi
How can I raise the hight of my conservatory sides without raising the floor hight the conservatory is all UPC and glass
I have it sitting on a decked base
I'm moving to a rented house and taking it with me so don't want to build a brick base any ideas
I need to raise the hight by 300mm

 

[freddiemercurystwin]

What does the landlord think about this then? Some smilies seem appropriate:

 

[Marlinb]

They are more than happy but I can't figure out how to do it