Sloping floor repair

10 Replies

Hey BP,

I have a property with sloping floors, poorly covered with tile. It was built in 1920, seems pretty solid, and normal for a property in the area (Oakland County MI). However, the slope is pretty bad and not really eligible for vinyl plank unless it is repaired. This seems to be above scope for a typical flooring installer but not bad enough for a foundation specialist. Curious to hear from those who have dealt with this before.

Thanks!

Ben

Ben if you are thinking of floating vinyl plank then you're right the slope can be an issue. A good grade commercial glue down vinyl plank would conform to the slope. Today's floating floors are too rigid. Get a glue down with at least a 12mil wearlayer( I would prefer 20-22mil) and make sure it have a good scratch resistant finish such as Aluminium Oxide or Ceramic Bead. I would also use a NON pressure sensitive adhesive such as Capitol VA-550 or something equivalent that bonds as a hard set to hold everything down. It's a little more difficult to work with but has the best results. You just have to make sure the glue doesn't skin over before getting the plank in it , similar to a wet set adhesive. A Professional installer would understand this.

Is this slab foundation or elevated? If elevated, and you have wood subfloors, a good floor guy can float out the floors to level them. If a slab, you can use self leveling cement to float out the slope, then lay down whatever floors you want from there.

Originally posted by @Will Barnard :

Is this slab foundation or elevated? If elevated, and you have wood subfloors, a good floor guy can float out the floors to level them. If a slab, you can use self leveling cement to float out the slope, then lay down whatever floors you want from there.

 

Be very careful when considering adjusting the level of a cement slab especially in basement areas. That slope is usually tied to drainage and messing with the slope can lead to the floor's inability to drain should you get a water event. Some think you can build up the drain but agin by reducing the slope it creates other issues.

Originally posted by @Keith Lewis :

Be very careful when considering adjusting the level of a cement slab especially in basement areas. That slope is usually tied to drainage and messing with the slope can lead to the floor's inability to drain should you get a water event. Some think you can build up the drain but agin by reducing the slope it creates other issues.

I didn’t see any mention this was a basement area but this is good and valid advice for that situation. For anything above grade, repairing a sloping foundation will not affect drainage as it is suppose to be perfectly flat.

@Ben Limberg , my first thought is that the sloping has to be coming from somewhere.  Sloping is a symptom, not the condition.  Whatever the condition is, is whats causing the sloping. I recently had this done in a house that had just a crawl space and there were multiple floor joists snapped and had to go in with jacks and jack it up to close to normal and then the floor was less "sloped".  At that point, my flooring guy was able to build up the floor in the corners and float the LVP over and it was WAY better.

Do you have a full foundation or a slab, or a crawl?  Message me some pictures and I will gladly take a look 

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