2.Floor and walls made of tiles
3.Floor made of white cement and marble stones (crushed to small pieces)
4.Floor of mud
6.Metal with plastic paint on it
7.Plastic (water can not penetrate inside) especially buckets, mugs, ropes
8.Rubber (water can not penetrate inside) especially sandals
A: Respected Brother/Sister in Islam
As Salaamu Alaykum wa Rahmatullahi Wa Barakaatuh
Haamidaw wa Musalliyaa
Your query below refers;
The following ruling could be applied to flooring material: If some najaasat fell on the ground and got dried in such a way that there is no sign of it nor is there is any stain nor foul smell of that najaasat, the ground will be deemed to be pure. However, tayammum on such a piece of ground will not be permissible although it is permissible to perform salaat there. The same rule applies to bricks and stones that have been embedded with limestone or mortar into the ground in such a way that these cannot be removed except by digging them out. That is, once the najaasat dries and no sign of it remains, they will be purified, but tayammum will not be permissible.
However, those bricks that have just been placed on the ground without being embedded with lime or cement will not get purified with the drying of the najaasat. They will have to be washed. Hence, items such as mops, buckets and the like must be purified by washing them with water or other similar liquid detergent.
And Allah Ta'ala Knows Best
Shafiq Jakhura (Mufti)