The real challenge is to be able to make this pergola yourself for the lowest cost. To find a solution with cheap materials. For example, wooden slats, but how can we guarantee that it does not warp over 4 m.
In short, I see that my question has generated an atmosphere
But your idea, David, is to tinker with one in your garage or to reduce the prices? The blades in particular, there must be a way to have them made in sheet metal for example for much cheaper!
I don't have 15000€ to put in a pergolla. At this price you have a car. So the idea is to demonstrate that there is a goal and for all do-it-yourselfers to have a design file for self-realization: me first.
This can be a challenge, but why not this time work as a team.....
There are obviously several of us who are interested. And indeed teamwork would be nice on this "social network" for a constructive exchange of ideas. We need a challenge without rewards or rankings...
Very interesting subject. I opted to buy a chassis at 199€ at the beginning of 3 by 4 but the all-season resistance becomes a problem
To avoid too crazy costs, the wooden structure, which is more resistant, allows you to have winter resistance.
Unfortunately we fall within the framework of declaration because it can turn into a veranda according to the municipal authorities
The dodge is to declare a winter garden lol
The most expensive is the fixing to the ground (the iron legs) which come back to buy at the price of wood for the structure
My manufacturing cost is estimated at 1000€
the canvas!!!! If you take a custom-made waterproof model, you will be around 1000€
so for 2000€ it's manual
l Automation:
Take an electric roller shutter and insert the motorization with adaptation for cable transmission so that the tarpaulin can be folded up. Cost 500€
l automaton use a small IMO with solar and rain sensor sells etc 400€
That's where I am in my "study". I think you can make the set for 4000€ of parts. On this we don't count the time passing but if we estimated we would surely arrive at 8000€
so for me 15000€ an operational system is not that crazy
Indeed, Clémentine, the idea this time is to carry out a joint project. The challenge would be more based on the success of a collaborative project. This may be unprecedented.
Concerning the initial project, it is a question of adjustable slats, but research on other systems, such as tarpaulins, allows us to evaluate the cost. So the analysis of the competition and the different solutions already existing is a good starting point.
Maybe you can not limit yourself to the material, if you can find a supplier of PVC profiles, for example such as roller shutter slats. or something else...