I am in the lucky position of building my own house in Southern Ireland and have have a 'winter garden' room which will have three tall walls of glazing with one side facing south. The roof is very high so a lot of light will be let in. I plan on growing various shrubs, climbers and plants that grow in temperate regions such as Kenya (where I am originally from hence the choice of planting) + some tropical plants.
I have two main questions:
1 - The glazing in the house will be triple glazed with a UV % rating of 20 Tuv - I know that the temperature, humidity and light the room will receive will dictate what will grow well or at all in this region - but what impact will this type of glazing have? I may be able to opt for different glazing (e.g. double glazed instead). The glass has a U-value/Light/Energy rating of 0.5 / 62 / 42
2 - I will have limited access to fancy soil - can anyone recommend a sensible soil mix that can be sourced here in Ireland for this type of planting and anything I should be aware off (generally, I am asking what soil composition I should be choosing).