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Insulation Specifications | <strong>paroc</strong> Article
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PAROC HVAC solutions for technical insulation

Insulation Specifications

Date Published 2025-03-16

When it comes to technical insulation, precision is everything. There’s nothing worse than getting halfway through an installation only to find that something doesn’t line up – and in many cases, the root of the problem is incorrect insulation thickness.

Even a seemingly minor deviation in insulation thickness can compromise an entire system. In fact, specifying the wrong insulation thickness doesn’t just affect performance – it can result in the need to remove and reinstall pipework, often at significant cost and inconvenience to the installer. That’s why getting it right from the start is crucial.

The Cost of Getting It Wrong

Technical insulation is not just about wrapping pipes or ducts – it’s a calculated decision that affects energy efficiency, compliance, and long-term performance. A small oversight in product thickness specifications can snowball into major project delays and expenses. This is why specifiers and installers alike need to prioritize accuracy and consistency from the outset.

At Owens Corning®, paroc®, we understand how critical this aspect is.

That’s why we’ve developed a comprehensive UK Thickness Guide – a reliable resource designed to help you choose the correct insulation thickness every time, with confidence.

Why Choose paroc Stonewool Insulation?

For years, installers and specifiers have turned to paroc® insulation solutions that meet the highest technical standards. Our stonewool insulation is trusted industry-wide for its durability, fire resistance, and outstanding thermal performance. But what really sets us apart is our unwavering commitment to consistent product quality and full compliance with updated specifications – especially when it comes to insulation thickness.

With Owens Corning® paroc®, what you see is what you get. Our products are rigorously tested and manufactured to precise specifications, ensuring a smooth installation process and reliable results on every project.

Also, our free thickness calculation tool Calculus is fully updated to the latest calculation standard ISO 12241:2022, view Calculus tool here.

Stay Updated with BS5422:2023

The update to BS5422:2023, which replaces the 2009 version, brings with it several key changes aimed at simplifying specification and improving efficiency. Pipe sizes are now listed using a “less than or equal to” system, reducing the need for interpolation and helping to enhance overall thermal efficiency. Additionally, new tables have been added to the standard, providing better guidance and clarity for specifiers.

Staying up-to-date with the latest standards is another reason why using paroc® products – along with our easy-to-use UK Thickness Guide – is a smart choice for your next project.

In addition, BIM-aided (Building Information Modelling) design of HVAC installations has become standard for professionals specifiers throughout Europe. We take the management of a development project to a whole new level by introducing the first ever tool which enables intelligent, fully automated selection of the insulation solutions for the project, compliant with BS 5422.

Specify with Confidence

Avoiding installation errors and achieving peak performance is easier than you think. It starts with choosing a supplier you can trust – one who guarantees reliable, high-quality insulation, every single time.

Don’t leave your project to chance. Use our UK Thickness Guide to ensure every specification is spot on, from planning to installation. 

techinical insulation

HVAC applications

paroc insulation solutions for HVAC are developed to meet today's high requirements and local regulations of both new constructions and renovations.

We offer insulation solutions for chilled water pipework, heating pipes, hot and cold water pipework, drainage and wastewater pipework and ventilation and air conditioning systems. 

Image source: Vehkala School Project, Finland.

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