Article 667 of Civil Code

1 - If, during the course of the work, it becomes apparent that the contractor is performing it defectively or contrary to the contract, the employer may give him notice to correct the method of performance within a reasonable period specified for him. If the period expires without the contractor reverting to the correct or agreed method, the employer may request rescission of the contract or permission to entrust completion of the work to another contractor at the first contractor's expense, whenever the nature of the work permits this. 2 - Rescission of the contract may be requested without the need for notice or specification of a period if rectification of the defect or nonconformity is impossible. - In all cases, the judge may reject the request for rescission if the defect in the method of performance is not such as to substantially diminish the value of the work or its fitness for the intended use, without prejudice to the right to compensation where warranted.