How can I improve installation quality?

DriTherm Installation

How can I improve installation quality?

Approved Document L (Part L) 2021 has introduced a new level of scrutiny around the as-built energy performance of new homes. Higher fabric efficiency standards have been set and the new BREL report requires photo evidence to demonstrate thermal continuity and quality of insulation.  

Meeting these requirements will depend on the quality of your installation, as much as the products you specify. So, what steps can you take, to get the best results? 

Choose 'buildable' materials

As well as the thermal performance of your insulation, also consider its ‘buildability’. (i.e., how easy is it to ‘get right’?) 

Not many wall cavities are perfectly uniform and flat, so it makes sense to choose a material that adapts well to different surfaces. Mineral wool insulation’s flexibility allows it to adapt to minor imperfections in a building’s substrate and maintain close contact in a way that rigid boards won’t.  

Spaces between rigid insulation boards also need to be taped with precision, to prevent heat being lost through the gaps. This too leaves plenty of opportunity for human error. By contrast, where individual rolls or slabs of mineral wool meet, the strands ‘knit’ together, minimising gaps and maximising performance. 

work with an insulation partner

With the growing pressure on housebuilders to deliver to ever-tightening standards, you need an insulation partner who cares about quality as much as you do.   

This means working with suppliers who provide services alongside their products, to help the installation process run as smoothly as possible. This might include a dedicated housing team, an experienced in-house technical support team, or guidance materials. Our DriTherm® Cavity Slab Installation Guide, for example, provides step-by-step advice for storing, handling and installing the product, to help your site team complete the job to a high standard. 

Your Next Steps

Very few installations are 100% perfect but working with ‘buildable’ materials and an insulation partner who offers more than just a product, can help you achieve the results you need.