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class=\"et_pb_column et_pb_column_2_3 et_pb_column_2_tb_body  et_pb_css_mix_blend_mode_passthrough\">\n\u003Cdiv class=\"et_pb_module et_pb_post_content et_pb_post_content_0_tb_body\">\n\u003Cdiv>\n\u003Ch2>\u003Cstrong>The Headline Result\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>Social housing delivery has a different pressure profile: performance still matters, but budgets do not tolerate rework. The client needed a practical, repeatable method to improve airtightness outcomes without paying for disruptive strip‑out or re‑access. ATSPACE helped the project reduce air leakage risk by focusing on consistency, early close‑out, and simple controls the site team could genuinely maintain.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>The Challenge (Why Social Housing Airtightness Can Go Wrong)\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The site had early warning signs typical of many phased social housing schemes:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>workmanship variation between plots and subcontractor crews\u003C\u002Fli>\n\u003Cli>airtightness treated as “someone else’s responsibility” across interfaces\u003C\u002Fli>\n\u003Cli>late penetrations introduced after finishes were complete\u003C\u002Fli>\n\u003Cli>risk that failed tests would force rework behind kitchens\u002Fbathrooms (expensive, slow, messy)\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>The client didn’t need more theory. They needed a site method that would:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>improve consistency across plots\u003C\u002Fli>\n\u003Cli>reduce failures and retests\u003C\u002Fli>\n\u003Cli>keep cost under control\u003C\u002Fli>\n\u003Cli>produce clean evidence for Part L compliance\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>What ATSPACE Was Asked To Do\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cul>\n\u003Cli>Carry out residential air leakage testing on the agreed plots\u003C\u002Fli>\n\u003Cli>Support the team to improve airtightness performance across the phase\u003C\u002Fli>\n\u003Cli>Provide practical, repeatable actions that prevent rework\u003C\u002Fli>\n\u003Cli>Deliver clear reporting suitable for compliance packs and internal quality records\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Our Approach (Stop Leakage at the Source)\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Ch3>\u003Cstrong>Step 1: Identify the repeat offenders (site‑specific)\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We reviewed typical house types and flagged the leakage routes most likely to repeat across every plot on this build:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>understairs service zones and consumer unit areas\u003C\u002Fli>\n\u003Cli>soil stack and waste penetrations\u003C\u002Fli>\n\u003Cli>wet room boxing voids and bath panels\u003C\u002Fli>\n\u003Cli>loft hatch and ceiling penetrations\u003C\u002Fli>\n\u003Cli>meter cupboards and incoming services\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Step 2: Introduce a simple readiness checklist (no fluff)\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We created a short readiness checklist built around the defects that cause real failures. The goal was to stop plots being booked for tests too early — the fastest way to trigger retests and rework.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 3: Toolbox‑style coaching (quick and practical)\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Instead of long meetings, our engineer provided short, targeted site coaching focused on the specific details causing leakage. This wasn’t about blaming trades — it was about making the detail repeatable.\u003C\u002Fp>\n\u003Cp>What we reinforced on site:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>seal penetrations before kitchens\u002Fbathrooms remove access\u003C\u002Fli>\n\u003Cli>ensure continuous sealing around loft hatches and access panels\u003C\u002Fli>\n\u003Cli>close out service penetrations in wet rooms properly (not “covered and forgotten”)\u003C\u002Fli>\n\u003Cli>seal behind meter boxes and around incoming services\u003C\u002Fli>\n\u003Cli>protect the airtightness line after plot readiness sign‑off\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Step 4: Test, learn, repeat (phase‑based improvement)\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We tested the first set of plots, then fed back only what mattered for this site. The team applied those insights to the next set before booking tests, reducing repeat defects and cutting retest risk without extra spend.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Results (What the Client Gained)\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cul>\n\u003Cli>Improved consistency of airtightness outcomes across the phase\u003C\u002Fli>\n\u003Cli>Reduced risk of failed tests forcing expensive re‑access\u003C\u002Fli>\n\u003Cli>A repeatable quality method suitable for phased delivery\u003C\u002Fli>\n\u003Cli>Clear compliance evidence for Part L submissions\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Why This Matters in Social Housing\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>In social housing, airtightness is not just a number — it’s part of delivering homes that are warmer, cheaper to run, and more reliable. The best value comes from:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>preventing rework before access is lost\u003C\u002Fli>\n\u003Cli>building airtightness into routine quality checks\u003C\u002Fli>\n\u003Cli>controlling the common leakage routes that appear on every plot\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Common Mistakes We Helped the Team Avoid\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cul>\n\u003Cli>booking tests before plots are truly ready\u003C\u002Fli>\n\u003Cli>leaving sealing as “someone else’s job” between trades\u003C\u002Fli>\n\u003Cli>relying on snagging at the end to fix hidden penetrations\u003C\u002Fli>\n\u003Cli>repeating the same small defect across multiple plots\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Mini FAQ\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Can we improve airtightness without extra cost?\u003C\u002Fstrong>\u003Cbr>Usually yes — by tightening process and repeatable details, rather than paying for disruptive rework.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>When should we focus on airtightness most?\u003C\u002Fstrong>\u003Cbr>Before kitchens\u002Fbathrooms and boxing remove access to penetrations. Early readiness checks are the cheapest intervention.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>About ATSPACE\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>ATSPACE is a UK‑based compliance and testing specialist supporting housebuilders, developers, contractors and housing providers to prove performance and pass first time. 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