Guides

Short, practical answers to the questions that come up while measuring: how to measure a room, how box coverage works, how much waste to allow, and how bag yield is calculated.

How to measure a room properly
Most bad material estimates start with a bad measurement. Five habits that make the numbers reliable: measure both opposite walls, split awkward shapes, and record what you actually deducted.
How much extra material should you buy?
A waste allowance is a planning judgement, not a fact about your material. What drives it, why straight and diagonal layouts differ, and why buying the shortfall later is usually worse.
How flooring box coverage works
The number on a flooring box is coverage, not area you will achieve. How to read it, why the figure differs between batches, and why rounding up to whole boxes is the only safe move.
How concrete bag yield works
A bag of concrete mix yields far less volume than its weight suggests. How yield is stated, why it varies with the mix, and how to turn a pour volume into whole bags to buy.