Low Level Shower Trays And Concrete Floors

Hey y all deciding on a new shower tray and enclosure etc.
Low level shower trays and concrete floors. There s only 2 options that are sensible. Spread a thin layer carefully over the area where the shower tray is going to go. Decided on quadrant 900mm x 900mm. You are on the ground floor and the floor is concrete.
My instinct is to have the shower tray installed on a riser so that there is access to the plumbing underneath in case of leaks i e. We are starting to plan the renovation of our bathroom at the moment. All our disabled low profile shower trays are designed and strengthened to offer wheelchair access showering and shower seat use and can be installed in wooden or concrete floors to provide an easy access showering area. I was thinking of.
Mix up building sand and cement to create a mortar. For a concrete floor in my ground floor bathroom. Flush shower trays are often preferred as they look neater and have a smaller step up into them. Nearly all stone resin trays are low profile and i am not able to find one within my budget that has a compatible riser tray.
In this example we will be replacing an old 900 900 quadrant shower tray with a new 900 900 low level quadrant shower tray. After removing the old tray it was found that a long term leak had caused a fair amount of damage to the walls and floor that would all need to be replaced before the new tray was installed in place. I get this quite often customer wants a walk in shower tray but doesn t want an access panel or they have tiled solid floors. Flat tray with some sort of access underneath.
They are particularly helpful to those with mobility issues or who find getting in and out of the enclosure difficult.