can anybody tell me what is fibreboard...i found out it is used to make doors and windows and can be made to have a wooden finish, is it better than wood ? is it cheaper than wood?

alternate option is wooden framework with flexiply ,finished with plain veneer& paint or duco finish

For interior design like modular kitchen you have to use water proof ply wood BWP (710) so many price from 90 to 250 depond up on your position for wadrobe you can try BWR (303) so many price from 65 to 125 for loft,TV unit, partition you can try commercial play wood price from 40 to 65

It will be my opinion don't put curtains for small doors usually windows only we can use curtains for balcony also if more than 5 feet you can try inbetween colum and in center you can try like this type of sliding doors