Castle Oak is an 18mm engineered white oak, pre-finished in a UV matt lacquer to give a more natural look and feel. It has a Character/Rustic grade which means that it has a medium colour variation and beautiful large knots. These planks are 240mm wide, tongue & groove and come in lengths of 2200mm (on average 20% of the planks are short). This floor has a brushed surface which gives the floor an added texture and natural style. Engineered flooring is the perfect combination of practicality and authenticity. Constructed in layers, generally made from birch plywood, engineered flooring has a top layer veneer made from solid wood. It's these layers underneath which provide engineered flooring with greater structural stability than solid wood floors. This means that it's not as prone to shrinking or warping with changes in environmental conditions. Due to this stability, it is possible for engineered floors to be installed using any fitting method, including nail, glue down and float. It also allows for engineered flooring to be installed above underfloor heating, whereas solid wood flooring (in most cases) cannot. The solid wood veneer generally ranges from 3-6mm in thickness and is suitable for sanding. Sanding can remove between 0.5 to 1mm of wood per sanding. A thicker wear layer means your floor can be sanded and refinished more often, increasing the lifespan of the floor. Real wood veneer Easy-to-clean Stable Durable Suitable for underfloor heating Can be sanded and refinished Length: 2200mm Width: 240mm Thickness: 18mm Top Layer: 6mm Pack Size: 2.64m2 Species: Oak Colour: Brown Shade: Light Finish: UV Matt Lacquered Pattern: Long, Wide Plank Grade: Character / Rustic Process: Brushed, Planed Backing: Poplar / Eucalyptus Profile: Tongue & Groove Edge Profile: Bevelled Installation Method: Float, Nail, Stick Suitable for Underfloor Heating: Yes