United States of America
The National Roofing Contractors Association (NRCA) is one of the construction industry's most respected trade associations and the voice of roofing professionals and leading authority in the roofing industry for information, education, technology and advocacy. Founded in 1886, NRCA is a nonprofit association that represents all segments of the roofing industry, including contractors; manufacturers; distributors; architects; consultants; engineers; building owners; and county, city and state gov…
The Quality Association for Timber Construction - Finishing - Roof Construction e.V. (GHAD) is a nationwide association of carpentry and timber construction companies that define and represent the quality and excellence of their products and services in timber construction by means of a special quality assurance system. It is a quality association recognized by the RAL Institute for Quality Assurance and Labelling e.V. in Sankt Augustin.
Quality assurance consists of continuous internal mon…
The Holzbau Deutschland-Institut is involved in various projects of timber construction for the public good.
It contributes its competencies in a goal-oriented manner to the preparation of information and development of innovations in timber construction for the general public.
The Holzbau Deutschland-Institut acts as an interface between science and practice. The promotion and implementation of practice-oriented research and development in cooperation with national and international p…