Nanakshahi bricks ( ਨਾਨਕਸ਼ਾਹੀ ਇੱਟ ) were decorative bricks used for structural walls during the Mughal era.
This variety of brick tiles were of moderate dimensions and could be used for reinforcing lime concretes in the structural walls and other thick components. But, as they made moldings, cornices, plasters, etc. easy to work into a variety of shapes, they were more often used as cladding or decorative material.
More often than not, the structures on which they were used, especially the Sikh temples (Gurudwaras), were a combination of two systems: trabeated and post-and-lintel, or based on arches. The surfaces were treated with lime or gypsum plaster which was molded into cornices, pilasters, and other structural as well as non-structural embellishments. Brick and lime mortar as well as lime or gypsum plaster, and lime concrete were the most favoured building materials, although stone (such as red stone and white marble) were also used in a number of shrines. Many fortresses were built using these bricks.