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We help builders across the UK with airtightness testing because getting it right first time saves stress, time and money. When air leaks out of a new build, it drives up heating bills, creates draughts and can lead to failed tests that delay handover. That’s why we plan early, walk
When you build a new home, one of the key things you’ll need is something called an Energy Performance Certificate, or EPC. We help with this from start to finish, starting with SAP calculations, which are like a test on how well your home will use fuel and power. Once
In London, heat loss surveys are an essential tool for enhancing building energy efficiency, leveraging advanced techniques like thermal imaging to identify areas of energy wastage. By pinpointing issues such as thermal bridging, air leakage, and structural defects, these surveys help property owners reduce heating costs and lower their carbon
We’ve seen how much stress it causes when someone starts building and only later finds out their plans don’t pass SAP rules. That’s why we always say it’s best to get your SAP assessor involved early, before the build begins. We work with your house plans and help make sure
Air tightness testing checks how much air leaks through gaps or cracks in your building that should be sealed. We use special equipment to spot where warm air escapes or cold air sneaks in, which can lead to higher energy bills and discomfort inside. Most new builds in the UK
SAP air tightness certification checks how well a home keeps warm air in and stops draughts getting through gaps and cracks. We test this by using a fan to push or pull air through the building and measure how much escapes. If too much leaks out, your house will be
We know building projects can feel confusing, especially when it comes to rules and approvals. That’s where we step in, to make things clearer and easier from the start. We work with homeowners and professionals to help spot problems early, avoid delays, and make sure everything’s safe, legal and built
We test how much air leaks in or out of a building when it’s meant to be sealed up tight. This matters because if too much air escapes, your heating or cooling has to work harder, meaning higher bills and more stress down the line. At Ratio Seven, we help
We know starting a building project in the UK can feel like stepping into a maze of rules, but that’s where we help. At Ratio Seven, we make building regulations simple to understand and easier to follow, whether you’re planning a new build, a loft conversion or a shop refit.