Building regulation changes see focus on sealant tapes for energy efficiencies

Amazing! Building regulation changes see focus on sealant tapes for energy efficiencies

Information about Building regulation changes see focus on sealant tapes for energy efficiencies

Phil Puccio

New building codes coming into force this year call for even more airtight windows, says Andy Swift, sales and operations director for ISO chemistry.

Changes to Part L of the Building Regulations, effective from June 2022, will introduce stricter standards and compliance procedures related to energy and ventilation performance, contributing to a roadmap to a zero-carbon future, designing and building new homes. in line with stricter CO2 emission targets. In particular, to ensure the continuity of the air barrier, window and door units must be bonded to the primary air barrier and the frames must be taped to the surrounding structural openings.

This comes as evidence points to doors and windows being the primary cause of the nation’s chronically inefficient energy budgets. In fact, one could say that given product innovation over the years, it is perhaps “criminal” that the hundreds of thousands of new or retrofit installations completed each year go unaudited or unregulated, leaving a slew of problems for years to come leave the repair costing millions of pounds. That’s a shame, because with the advances in low-cost, user-friendly technology, there’s never a justifiable reason to delay or avoid specifying better energy-efficient window and door sealing solutions.

Improvements in airtightness

In this respect, the changes to Part L can be seen as a step in the right direction for the window construction sector. It will see demands for improvements in airtightness, forcing them from 10 air changes per hour to 8 air changes per hour and also the U-value on windows from 1.6 to 1.2Wm2 k/H, which requires more energy efficient sealing solutions such as thermal foam tapes. The specification now also states that the frame must be connected to the wall with airtight tape.

Heat always finds its quickest exit when it hits the ‘A’ or ‘A+’ rated window and this invariably comes from the approximately 10mm expansion gap that remains around the window after installation. This is normally left blank, but some spray foam can be injected to fill the gap before applying a silicone trim for a neat looking finish. Unfortunately, as useful as it may seem, none of these solutions create a measurable, durable, high-performance thermal, acoustic or airtight barrier – the U-value of the installed window is simply reduced, resulting in heat extraction and ultimately heat loss. financial loss.

For this reason the housing industry and construction sector as a whole deserve better insulation solutions to improve energy efficiency, particularly if the UK market remains buoyant as predicted over the next 12 months as the economy continues to recover from the pandemic and construction activity remains brisk. especially given a chronic national housing shortage and the need to build more affordable housing.

With modular building gaining traction and set to see further integration with more traditional building methods in 2022 to allow developers to more purposefully drive housing projects, designers and specifiers are looking for new ways to deliver low-carbon structures that use sustainable technologies for measurable airtight, acoustic and thermal sealing benefits. And this is where self-adhesive foam sealing tapes can offer real added value and enable builders to advance residential projects in a more targeted manner.

You can use “smart” foams impregnated with various substances to achieve a measurable U-value as low as 0.6 W/m2k, provide excellent thermal insulation and can contribute to 63 dB of sound insulation. Because these mounting straps are completely weatherproof from driving rain to hurricane wind speeds, installers can quickly fit them around the frame during initial installation. This provides reassurance that they have completed a comprehensive ‘A’ rated installation rather than just delivering an ‘A’ rated window. This is a benefit that can be resold to provide enhanced energy efficiency benefits to customers and owners.

Technical innovation

Changes in building regulations will clearly have an impact as energy ratings for buildings and land become more stringent, and that includes energy and ventilation standards for residential and non-residential buildings that are far better for the environment and future-ready – higher air and heat standards for home construction needs have priority.

Technical innovation through sealing technologies is one way those responsible for window specifications can do more to support greater energy efficiency and meet Part L requirements. Indeed, as sustainability continues to be of paramount importance in the development of low-carbon and environmentally friendly windows in construction projects, we will see technologies such as energy foam tapes, which can add real value during the initial and post-construction phases, as the most effective solutions for sealing Window and door frame expansion joints and crevices in homes are only becoming more important. Effective products now exist to ensure that airtightness and thermal efficiency in buildings should never be overlooked or ignored – it is simply a matter of how these products are designed.

To find out more about ISO-Chemie’s sealing solutions, Click here.

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