With a design project! The design project is carried out exclusively on the wishes of the Customer. In our Company, this is a document that is an integral part of the Contract. Only on the basis of a properly executed design project, you can calculate an accurate estimate for the work, the cost of all materials, and of course calculate the timing of the repair itself.
For example, we have a ready-made estimate sent to the Customer, and if something is not suitable for the cost, we coordinate it and find a more optimal option without compromising quality.
Also, a design project in our Company is a document according to which the Customer accepts the finished work, that is, the repair itself. Only for a specific technical task, you can make a claim for the quality of work performed or for non-matching dimensions. Without a project, it is impossible to prove anything.