How sloped is too sloped?

newparent77

Alderbank said:

My 30-year-old nephew recently sold the house he had lived in since birth and asked me to give it a 'once over'.
He was very surprised when I showed him a similar slope in the dining room, which he had never noticed in 30 years.
Since parents don't mind, I wouldn't worry.

Yes, I know my own house has all sorts of slopes in the floors which are probably as bad as this. I guess with it being a new structure I was expecting it to be better than it is. But still, the rest seems good, parents are happy so certainly not the end of the world!

MikeJXE

newparent77 said:

Thanks everyone who responded to this. For those interested, I had completely forgotten that I had a self-levelling laser level at the back of the shed so out of interest dug it out.

I set it up at the highest point and pointed it to the other wall, where I feel like I can feel the slope. Let it self level and then measured the height of the laser mark right in front of the level, and then where it projected onto the opposite wall.

Over a span of about 3.36m, it appears to be about 22mm lower on one side - way over the recommended 3mm per metre from the NHBC (which I assume means the drop should be no more than about 10mm?).

Anyway, it isn't my extension and parents don't seem to mind so I haven't said anything. Just a bit gutted on their behalf that it seems way over!

Please let me know if there's any flaws in my methodology here. Anyway, photo below of the laser against the run of the slope, which I think demonstrates it better.

Nothing wrong with your mythology at all

If you can feel the slope when walking it's to sloping

I'm ex builder and looking at your spirit lever I knew if the level was accurate the floor was way out 

The bubble on a drain is judged as that much