4

Insulated slabs usually have vapor barrier underneath. Since you did a test and found no moisture, there should be no problem installing vinyl flooring on it.


2

In a previous life around 1976 we moved an 80 year old chapel with hardwood floors to a new site. Between the age, inexpensive initial hardwood, and the move there were many wide cracks in the floor. The contractor (who built Fort Edmonton) had us mix fine sawdust (from sanding the floor -- so the sawdust was already part varnish) with varnish and stuff ...


2

If the garage isn't below grade, doesn't have a sump pump on its level, there's no drain pipe open to daylight out in the yard and you don't have holes drilled at the base of the walls. Then yes, you can cut it down, as it's just newer concrete of this century that normally requires a water and vapor barrier...typically it's clear or black 6-mil polyvinyl ...


2

Hardwood floors either have click-lock grooves or basic tongue and groove, but they all share that same basic idea. That means they can only be laid in one direction. The only place you can really start is going to be the top-left corner of your picture, and then move left to right and down towards the bottom. If you start at the bottom, you can only move ...


1

What is the typical difference in height between levels C and 5? NONE- the top of the floorboards should be at the same height. Any slight difference between the height of the laminate and carpet is dealt with by using a transition bar. Your floor coverings are temporary and will be removed and replaced eventually (perhaps when the next owner restores that ...


1

Yep, as long as you don't have a door threshold that would be a very likely trip hazard, your plan is almost right. Of course, it would be best to remove any surface reason possible in the high room. However, that floor is tongue & groove 2x4's and may be a ceiling for a room below (as seen in the sunlight areas of your picture)...so, don't screw with it....


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