What do you that keep pigeons recommend for the floor? I have seen lofts with wood and some with screen. I have no time to clean daily, and really will only be able to clean on the weekends. I have read, and intuitively understand, that buildup of droppings is unhealthy. I appreciate your inpute.
There are 2 theroies on cleanliness in pigeon lofts, ultra-clean and deep litter. The Unltra-clean crowd spend hours keeping the walls and floors spotless. The deep-litter advocates (me) clean the loft twice a year, before and after racing seaon. Many are somewhere in between.
IMO, constant mucking out of the loft keeps the birds on edge and hinders their reproduction and even how they feel about their home. The deep-litter has little disruption within the dovecoot and the birds seem more content and less stressed. I've successfully resettled birds trained to other lofts, which I don't think would have happened had I kept the birds on edge by constant cleaning.
The primary consideration, regardless of the cleanliness standard, is to maintain a dry loft. A damp loft breeds disease whether it is clean or not. A dry deep-litter loft can be disease free.
I use a 4 inch deep shavings on the floor and rake them over about once a week. The shavings absorbs the moisture and the loft floor is always dry, even with the waste buildup. I also scrape the dropping from the perches at that time, but those droppings go into the mulch on the floor.
When I clean the pigeon loft I spread the mulch onto the garden, makes great vegetables come spring and summer.
I you decide to use a screened floor, another option you mentioned, Build the floor far enough off the ground to remove dropping buildup about once a year. The floor grating will need to be cleaned monthly or so.
Hope this helps.