The Ownership of Producers for Thermo-Insulating Carpentry (Patronatul Producatorilor de Tamplarie Termoizolanta – PPTT) is an association of employers in field of the thermo-insulated windows and doors. It was founded in 2004 and now gathers a number of 140 companies.
- A primary goal of the organization is to promote the manufacturing of quality windows, doors, facades, insulated glass unit and that their installation are correctly made.
- As an active member of the standardization committee ASRO/TC 122 (Glass in buildings) and ASRO/TC 318 (Doors, windows, shutters, building hardware and curtain walling), PPTT had an effective contribution to the elaboration and implementation of Romanian version of relevant EN and ISO standards.
- As representative association in the field, PPTT assisted MDRAP in the development of standard (reference) costs used for exterior joinery works included in the national program for thermal rehabilitation and to meet the new performance updated minimum energy requirements.
- PPTT performs certification of technical and professional qualifications of the operators which active in the windows and doors. This certification is a voluntary system for the recognition of company competence in carrying out processes covered in their activity.
- PPTT, in partnership with the Technical University of Civil Engineering Bucharest, organized trainings dedicated for training and specialization the employees with higher technical education from companies active in the market for windows and doors thermo-insulating.
- PPTT is authorized by the National Authority for Qualifications (ANC) as a centre for professional skills assessment and certification obtained by other means than formal for the existing relevant occupations (fitter of window and door units, maker of aluminium and plastic joinery and maker of insulated glass unit).

