Crumbly Floor Screed

The screed is incredibly crumbly and looks like.

Crumbly floor screed. User 25416 4189 posts. After a 10 days it is also cracking by the doorway. Laundry has a waste in the centre of the floor. Added to that cement type grade of aggregate and the method of storage of screed material influence the mix ratio to a certain extent.

We are currently renovating our kitchen in a 1930s flat. Hi what i do to prevent the scuffing off of the top of floor screeds is to apply a cement wash over the screed usually after a day or two when floor is dry enough to walk on to do this i mix a shovelful of cement to gorilla tub setting bucket and a healthy glug of pva filled with clean water and stir as to not let the cement stick to the bottom of the bucket after a few minutes of. Instead of looking smooth shiney it was rough powery however much they trowelled it. My problem is now 4 weeks on the floor is very dry crumbely.

When we started to pull up the mdf we noticed some kind of underlay screed that had been painted green but with a red core. As i have removed the floor tiles in the laundry the screed below has come up in places and is pretty crumbly in others so i have removed the lot and am just back to the bare slab. There is an aluminium angle in the doorway and a metal. And the entire floor is just as weak and crumbly as that point if not more some parts i can literally break away with my fingers.

Mix ratio of sand and cement screed for floor varies based on the intended use of the screed. So i thought it would go off. A rotary hammer drill would be overkill if the screed is crumbly a lump hammer and a cold chisel sound like they would easily do the job. Therefore a suitable type of cement shall be selected and sand needs to be free of deleterious materials.

Some would advise that your floor situation would be ok under laminate flooring my advise would be to remove all the tiles back to bare concrete latex screed in english the floor and have peace of mind on completion that a its not crumbling as you walk on the laminate and b the floor is solid and level to except the laminate. The tradesmen completed the work but the surface is left crumbly and edges corners came lose and have now separated from the rest of the floor. In 11 patches the hoover has sucked out over 2inches of the crumbely screed. Hi i have hired a tradesmen to screed a floor.

We pulled up some lino floor which was backed with sheets of mdf. Hi i laid a new concrete floor and laid the screed on thursday i went back today and found the screed to be like crumble towards the end we laid last. It was delivered quite dry and by the time we had finished seemed even worse but it trowelled up o k. It was drying for a week and there was no traffic on this floor.

The screeders 20 yrs experience worked really hard but said it was the worst screed they had ever seen.