Materials used to build viewing rooms, enclosures, cages and all equipment are not required as this may lead to bird growth and be required to be easily repaired and disinfected.
The facilities should be built and placed this way if you do not have them sharp edges and protrusions to injure the birds.
Advice should be sought from an animal welfare expert on the construction and refurbishment of poultry houses. It is extremely important that the premises and facilities are designed for the purpose for which they will be used.
Measures must be taken to protect birds from predators, rodents and other animals.