Solid Hardwood, Engineered and Laminate Flooring - sub floor

our house is old and uneven (never lived in a house that was otherwise!) We want to lay a laminate floor. We'll put down a sub floor. We've noticed, however that there is a decided gradual wave to our floor. How critical is this going to be?
Cheers,
Besos

Very critical!!

Specs for subfloor flatness on laminate floors is very tight.

Pull a string across the subfloor.
You will see the low and high spots. Sand off the highs, and fill the lows.

1/8 inch in a 6 foot span, for small areas
3/16 in in a 10 foot span for bigger areas.

Don't follow these specs and your asking for it.

That is why floor prep can cost as much or more in labor as installing the finshed flooring.
Sometimes the floor prep can take 2 or more times the amount of time, it takes to install the flooring. NOBODY WANTS TO PAY FOR FLOOR PREP!! Thus the reason floors fail, and it is blamed on the product as being defective or junk.:mad:

Floor prep is the make it or break it of any flooring project.

That is why I charge an hourly rate + materials for floor prep. Neither the homeowner or I get cheated that way. It is based on what I make installing the actual flooring.:)

Thank you very much for that! hubby is on his knees as we speak!
Besos

i have to agree with perry on this one ,more people more often than not think they do floors and not have to do anything to the sub-floor.More jobs fail cause people try to save money by not doing anything to the sub-floor and it ends up costing three times what it would've to do it right to start with.So do yourself a favor and take care of any problems before you start this floor:cool: