Adding a loft ladder, boarding the loft, and adding a Velux window

[Ricochet J]

Hi,

We need an "occasional" room and the loft sounds logical. We have a very big loft, and I'd like to take advantage of this.

I'm thinking of asking someone to install a loft ladder, board the loft and even add Velux windows. It won't legally be classed as a room which is OK with me.

I don't want to spend a lot of money on it as we want to move in 2-3 years and need a temp solution for an occasional room to tide us until then. Is £5k reasonable to give me what I want?

What are your thoughts? Would it increase my house price?

 

[Ricochet J]

It's going to be used for:

1. Storage - stuff like 10kg bags of flour (we bake a lot), 10kg bags of rice etc.
2. Some gym equipment - dumbells, bench. I won't be using the room to jump/run etc. Just static on the spot weight lifting.
   
3. A desk and office chair and some electronics lab equipment

What thickness do I need for it be safe a load bearing?