R-value: tips for selecting the right insulation product

The R-value of an insulation product is crucial. It affects the energy efficiency and costs associated with the building in which it is used, as well as compliance with regulations, comfort, property value and environmental impact. The most efficient and sustainable insulation materials have an optimal R-value or high thermal resistance, which in turn contributes to good U-values for the building elements that they are part of. Read on to discover how YBS helps homeowners achieve long-term energy savings.

What is R-value?

R-value refers to the thermal resistance of a product. It quantifies the material’s ability to resist the transfer of heat through it – in other words: to prevent heat from escaping during the winter and from entering during the summer. R-value is usually expressed in units of square meters kelvin per watt (m²·K/W), with a higher value indicating better insulation.

As the R-value of a material increases, the U-value of the assembly that includes that material decreases. In other words, higher R-values contribute to lower U-values, which means better insulation.

Getting value for your money

When selecting an insulation solution for your project, make sure to pay attention to the accreditation as well as to the thickness that was used for testing the thermal properties.

Third-party accreditation

Insulation products like SuperQuilt and BreatherQuilt have Agrément certification and are rigorously assessed by a trusted and independent third-party certification body in terms of performance, durability, safety and compliance with relevant standards. This thorough evaluation helps ensure that our products are fit for their intended purpose and will perform reliably over time.

Thickness in testing

Insulation manufacturers may lose their accreditation over a deceptive practice regarding thermal value testing, where a product is tested at a significant thickness to achieve a favourable R-value and subsequently the result is displayed on the packaging of a product that is less thick – hence does not have the same R-value or thermal resistance as stated being tested.

Despite the small writing that is added, this method of course misleads consumers and professionals who rely on accurate testing data information to make informed decisions about energy efficiency and insulation effectiveness. YBS strongly opposes such tactics, providing correct and transparent information to guide your choices. For instance, BreatherQuilt, which is 40 millimetres thick, has naturally been tested at exactly 40 millimetres.

Help with your calculations

Use our free online U-Value Calculator to find the right solution for your project in just four easy steps. As a professional, you can also contact our in-house technical team at 01909 726 025 for bespoke U-Value calculations and to get A to Z support for your project.