Are home improvements tax deductible when I have a home based business?

I'm curious about home improvements being tax deductible when I have a home-based business. I am a food blogger with an office space in our home, and I use the kitchen a lot for recipe testing, photos, and videos. We are planning on replacing the floors in our entire home soon, and I was wondering how much of that would be tax deductible since it would include the space where I work as well as the kitchen where I also work.