To give you an idea of the size, it's 6 metres by 3 metres (18ft * 9ft).
While I'm a little disappointed that it's not as weatherproof as I was expecting, it seems to do the business.
I was expecting to feel sheltered when inside the gazebo, but was unprepared for just how much the simple addition of a gazebo contributed to the 'inside' space on board, even though it's outside.
I found myself sitting there thinking 'this bit of the deck needs sweeping', something I'd not really considered before, as the deck has simply needed hosing down, or cleaning, once in a while.
Now I should be able to work on deck even when it's wet and miserable.