Home Fabrictor’s Corner ‘Don’t be left out in the cold on Part L’

‘Don’t be left out in the cold on Part L’

by Sophie Stevens

Changes to Part L of the Building Regulations are expected to be published this autumn. This could present difficulties for some aluminium products and open up more opportunities for high performance PVC products, Ian Cocken of Aluplast tells Total Fabricator

“New rules, designed to improve the standard of energy efficiency in homes are due to be unveiled this autumn,” explains Ian Cocken, director of sales and marketing at Aluplast.

“The UK has ambitious targets to meet on climate change, but it is lagging behind on these goals and it needs to introduce more impactful measures to get back on track.

“That is likely to mean big changes to Part L of Building Regulations in order to improve the minimum energy efficiency rating of windows and doors into new build, as well for the home improvement sector,” he continues.

“It’s a big change, and it has the potential to cause some real problems for companies who rely on the performance of older products that may already struggle to meet current energy efficiency requirements, let alone satisfy any future standards.

“That includes PVC but especially aluminium systems, which are typically much less thermally efficient,” adds Cocken.

The Ministry of Housing Communities and Local Government (MHCLG) is set to publish its revisions to Part L in October, changes that would come into force as early as spring 2022.

The proposals are expected to include setting a new maximum U-value for replacement windows of 1.4W/m2K or WER B from the existing C rating and 1.6W/m2K maximum U-value.

For replacement doors, it is anticipated that the minimum DER will be changed from 1.8W/ m2K to 1.4W/m2K, or DER B and E to Band B; or doors where the glazed area is greater than 60%, 1.8W/m2K to 1.4W/m2K or a DER Band C rating. For new-build, the proposed revisions are set to be even stricter.

“It’s a difficult time for the industry because everyone is currently working flat out just to keep up with demand,” Ian continues. “But these changes are just around the corner and anyone who doesn’t take the time to understand the impact they will make across the supply chain runs the risk of being caught out.

“Introducing a higher specification IGU may help, but that’s more of a quick fix. Fabricators should be looking for more of a long-term solution, especially if they want to stay ahead of even stricter standards in the future.”


Read the full article in the August/September 2021 issue of Total Fabricator magazine.

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