Wooden floors come in many types, wood-species, constructions, sizes, quality and prices. One of the more "common" ones is the 18mm thick Solid Oak floorboard, 120mm wide and with random lengths. Popular priced too at many DIY-sheds like B&Q, Wickes or even Floors2Go, but in our opinion the boxes in which they come should carry a big red exclamation mark on it: random lengths, nice but.... know what you are buying can restrict your choice in installation methods.
The problem is, the boxes do not come with that warning. So if you are in the same position as the person who asked the following question in regards of the "infamous" 18 x 120mm you might like to hear this too:
Hello , Hope you can help me ? Ive just bought a new solid 120mm wide 18mm thick wooden floor to be fitted in the kitchen/dining room and the sub floor is concrete what would be the best way to fit the wooden floor?
Answer - includes warning
Thank you for your question. Question for you in return: does your floor come in so-called random length, for instance the known 300 - 1200mm? If so, you first have to check how many very short lengths are in a box.
If too many then it is not advisable to install such a floor using the floating method and it would be better to fully bond the floor with flexible adhesive to the level and dry concrete floor. See this article about the short end of the stick/board. Solid Floors - what to note
Hope this helps
Wood You Like Ltd
And flexible adhesive is - compared with combi-underlayment and a few bottles of PVAC-wood glue - higher in price, turning your "cheap" or cheaper wood floor into a more expensive (but not necessary better quality) floor.
See example of what's on "offer" here:
Would you care to count the number of long boards in the image above? Many short boards mean many joints = many hinges when you install this type of flooring floating, making your floor rather unstable and prone to movement.