When the kitchen is gridded separately, are the devtas gridded as well?
No. The separate kitchen grid marks only the zones, not the devtas.
Related questions
Apart from gridding the house, should the kitchen be gridded separately?
Yes. Interior vastu means zoning each room separately with its own grid and then designing its interior accordingly.
Can artificial plants be used in the kitchen?
Yes, there is no problem in using artificial plants in the kitchen.
If furniture made by carpenters is placed on a devta's pad, does it affect the devta?
All 45 devta places cannot be left empty, or there would be nowhere to live or keep things in a house or flat. The Vedic texts say to protect the ashtamansh (one-eighth part of the pad); wooden items kept on any devta's place, even on a marma, are not counted as a dosh, because wood does not sink in water but floats. Besides, the devta's place lies beneath us, and the devta is basically a particular energy.
If one family member has a planet exalted and another has it debilitated, should that planet's items be kept in the interior?
Decide room by room. In your own bedroom use the materials of your exalted planet and not of your debilitated one; your daughter's bedroom is designed from her kundli. The house facing and common areas such as the drawing room and kitchen are decided from the grih swami's kundli. Many people make the master bedroom in the South-West by default, which is wrong when Rahu is debilitated: such people suffered there and got very good results after moving to another direction.
Should each zone of the house be painted in the colour of its devta?
Colours are taught in interior vastu; do not get confused now and focus on what is being taught.
Why should a house door, kitchen or toilet not be built at Shikhi (E1), and which doors are allowed there?
Shikhi sits there and the spot holds heat and fire, so a house door at E1 can cause fire incidents and accidents. A boundary-wall gate is allowed, being in the pishach bhoomi, and so is the door of a temple or other religious building, a school or a college, because such buildings represent Jupiter and become the yogi's own home. A kitchen at Shikhi keeps health poor and brings memory loss, money problems, anger, indecision and a blocked mind, and a toilet there in the North-East stops vansh vriddhi (growth of the family line).