It is always best practice to measure from one side of a room to another, making sure to take the furthest measurements (into alcoves and door ways) length and width. Metric (mtr/cm) is usually used, remember to always allow 10cm waist on each measurment, this is to allow strech and fit for carpet and vinyl. Feel free to call one of our technicians if you are having difficulty measuring. Alternitively refer to our meaasuring guidlines page.