What is the consistancy of floor leveler need to be?
for floor leveler to work properly and effectively it should be a little thinner than paint when you are stirring it. this will let it flow to the low spots needed to cover the floor properly. floor leveler's are quick drying and shouldn't be kept waiting to pour, as soon as you mix it up pour it or you will waste it.
What should you use to seal your kitchen flagstone floor before levelling it with levelling compound?
There is not a simple answer for this. You must know how unlevel the floor is and the amount needing to be filled. Generally the bucket will give you a general idea, but buy more then what you think you'll need. Usually you can return the rest. If you need to level a large area, buy in a powder. It will be a lot less money and actually less mess in the end.
Most likely, if the floor was glued, it was glued with an industrial product such as PL Premium. Many laminate floors are installed as 'floating' floors which does not require glue. Unfortunately if it is difficult to pull up the laminate you may need to remove the sub floor in order to ensure a flat surface to work with when installing the new floor. If the laminate flooring does pull up and leaves indentations and…
Ensure concrete is clean, smooth and dry. Concrete should be first cleaned with degreaser to remove any residue. Use a self leveling compound if floor is not level or has some low areas. Fill any cracks or holes prior to using leveler. Allow leveler to dry overnight and seal concrete the following day to prevent moisture from wicking through concrete. Install flooring of choice.
If you're talking about a couple of small dips, there's a product called "Thin set" or "Floor leveler" that's more or less just mortar that will stick to wood sub flooring. It will work well so long as the floor is stable. (ie: it doesn't feel springy when you step on it.) If the floor is bouncy, you'll need to add some reinforcement and if it's off by an inch or more, you're out of…