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Rob:
We’ve had very good success with “SCOFIELD” underlay. It’s self-leveling, cementitious underlay for leveling interior floors before the installation of floor coverings. It performs in depths from featheredge to six inches over most types of subflooring. Most of our experience is over concrete. The good thing about this product is that it is slower to set up, yet has very high strength after 24 hrs. They have a full line of other products for colored overlays as well. I haven’t used them yet.
For info call: 800 800 9900
These work much better for the average install rather than using a gypsum based product, IMHO.
Mike
Replies
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Rob:
We’ve had very good success with “SCOFIELD” underlay. It’s self-leveling, cementitious underlay for leveling interior floors before the installation of floor coverings. It performs in depths from featheredge to six inches over most types of subflooring. Most of our experience is over concrete. The good thing about this product is that it is slower to set up, yet has very high strength after 24 hrs. They have a full line of other products for colored overlays as well. I haven’t used them yet.
For info call: 800 800 9900
These work much better for the average install rather than using a gypsum based product, IMHO.
Mike
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I thought I would also mention that, I to have used the scofield underlayment product. I had no trouble whipping up 20+ bags of it in a five gallon bucket, although it does take two sets of hands. Depending on the depth, say 1 1/2 inches or more consider using a volume enhance like clean pea gravel, its definitely more cost effective and doesn't seem to jeopardize the mix. Don't be afraid to lightly work any feather edges with a trowel, although too much pushing around is not a good thing. As far as covering over old sub-floor (i.. ship lap) be sure to close all holes into the joist bays (i.. Blocking and Fix-All) and consider using a product that is latex based (sorry, no brand name suggestions- talk to your local expert).
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What is your prefered floor levelor (dependable, armstrong etc) & have you ever used it on a surface susceptibleto movement. If so, what results have you noticed over time.