How to Measure Your Rooms for Flooring: The Complete DIY Guide

# How to Measure Your Rooms for Flooring: The Complete DIY Guide Accurate room measurements are the foundation of any successful flooring project. Ordering too few boxes halts your installation midway, while over-ordering leaves you with non-returnable surplus material. Here is the exact method professional floor layers use when calculating orders for hybrid, engineered timber, and laminate planks. --- ## Step 1: Break Your Floor Plan into Simple Rectangles Most modern homes have L-shaped living spaces or angled hallways. Never try to measure an irregular room in one single calculation. 1. Sketch a rough bird's eye view of the floor plan on paper. 2. Divide open spaces into clean rectangles (e.g. *Area A: Main Lounge*, *Area B: Dining Nook*, *Area C: Hallway*). 3. Measure the longest length and width of each rectangle in metres. 4. Calculate Area = Length × Width. --- ## Step 2: Account for Doorways, Cupboards & Transitions Measure all the way into the door jambs where the floor will finish under the closed door. If you are continuing the same flooring into closets or kitchen pantries, include those spaces in your measurements. --- ## Step 3: Add the Crucial Wastage Allowance Every flooring installation requires trimming boards at the ends of rows, navigating heating vents, and framing doorframes. - **Standard Straight Run (Planks parallel to walls)**: Add **7% to 10% wastage**. - **Herringbone or Chevron Patterns**: Add **15% wastage** due to 45-degree angle cuts at every perimeter. - **Diagonal Lay**: Add **12% wastage**. > **Example**: > Total Measured Area: 65.0 sqm > Wastage Allowance (8%): 65 × 1.08 = 70.2 sqm > Box coverage: 2.0 sqm/box > Boxes required: 70.2 ÷ 2.0 = 35.1 → Round up to **36 full boxes**. --- ## Step 4: Measuring Stairs Stairs require individual calculations: - Count the number of **Treads** (the flat step you walk on). - Count the number of **Risers** (the vertical front face of the step). - Measure the step width (standard is usually 900mm - 1100mm). - Note down whether your stairs have **Stair Nosing** requirements. National Floors provides colour-matched bullnose and square-edge stair trims for every collection.