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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 result\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>A residential block was experiencing ongoing noise complaints — mainly footfall, chair movement and other impact sounds. Snagging attempts had not improved the situation because the \u003Cstrong>real acoustic weakness had not been proven\u003C\u002Fstrong>.\u003C\u002Fp>\n\u003Cp>ATSPACE carried out \u003Cstrong>pre‑improvement sound insulation testing\u003C\u002Fstrong> to identify the weakest floor build‑up and confirm the exact transmission route.\u003C\u002Fp>\n\u003Cp>The outcome was a \u003Cstrong>targeted upgrade plan\u003C\u002Fstrong> focused on the floor build‑up driving most complaints, plus the flanking routes amplifying the issue.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Project snapshot\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Service:\u003C\u002Fstrong> Pre‑improvement sound insulation testing\u003Cbr>\u003Cstrong>Client:\u003C\u002Fstrong> Housing association + maintenance contractor\u003Cbr>\u003Cstrong>Site:\u003C\u002Fstrong> Linden House, 5 Station Lane, Croydon CR0 2BX\u003Cbr>\u003Cstrong>Building type:\u003C\u002Fstrong> 5‑storey residential block, 40 flats\u003Cbr>\u003Cstrong>Construction:\u003C\u002Fstrong> Concrete floors, mixed floor finishes, historic refurbishment by vertical stack\u003Cbr>\u003Cstrong>Programme stage:\u003C\u002Fstrong> Complaint investigation + pre‑upgrade planning\u003Cbr>\u003Cstrong>Compliance driver:\u003C\u002Fstrong> Part E improvement intent + resident comfort\u003Cbr>\u003Cstrong>ATSPACE delivery:\u003C\u002Fstrong> Complaint‑led test selection, airborne\u002Fimpact testing, route diagnosis, priority fix plan, reporting for residents + contractor\u003Cbr>\u003Cstrong>Engineers:\u003C\u002Fstrong> ATSPACE acoustic engineer + compliance coordinator\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What residents were reporting\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The pattern was clear and consistent:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>heavy footfall noise from above\u003C\u002Fli>\n\u003Cli>chair scraping and dropped‑item noise transferring strongly\u003C\u002Fli>\n\u003Cli>worst in living room + hallway\u003C\u002Fli>\n\u003Cli>complaints clustered around two vertical stacks\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>This indicated an \u003Cstrong>impact‑noise problem\u003C\u002Fstrong>, but testing was needed to confirm the exact route and cause.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Why quick fixes were not working\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The site team had already tried:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>sealing at skirtings\u003C\u002Fli>\n\u003Cli>adjusting door closers\u003C\u002Fli>\n\u003Cli>patching ceiling defects\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>These do \u003Cstrong>nothing\u003C\u002Fstrong> for impact noise because the transmission is structural and driven by:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>floor finish type\u003C\u002Fli>\n\u003Cli>resilient layer effectiveness\u003C\u002Fli>\n\u003Cli>perimeter junction continuity\u003C\u002Fli>\n\u003Cli>void pathways and flanking routes\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>The client needed \u003Cstrong>evidence\u003C\u002Fstrong> so the next round of work actually moved the outcome.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What ATSPACE did\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Ch3>\u003Cstrong>Step 1: Complaint mapping + targeted test selection\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We mapped complaints by stack and selected test pairs that represented \u003Cstrong>worst‑performing\u003C\u002Fstrong> and \u003Cstrong>average‑performing\u003C\u002Fstrong> conditions.\u003Cbr>No random testing — only tests with diagnostic value.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 2: Pre‑improvement airborne + impact testing\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We tested selected flats and compared results across stacks to locate outliers.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 3: Link results to installed conditions\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We inspected each tested dwelling to understand why results differed.\u003C\u002Fp>\n\u003Cp>We checked:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>hard flooring presence + installation quality\u003C\u002Fli>\n\u003Cli>underlay type and perimeter detailing\u003C\u002Fli>\n\u003Cli>ceiling condition, downlighters, access hatches\u003C\u002Fli>\n\u003Cli>service penetrations + boxing\u003C\u002Fli>\n\u003Cli>presence\u002Fabsence of resilient ceilings\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Step 4: Identify the weak floor build‑up\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>The failing stack had a \u003Cstrong>different finish build‑up\u003C\u002Fstrong>, creating a direct impact‑sound route.\u003Cbr>Better‑performing stacks had stronger finish strategies + better perimeter control.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 5: Create a targeted upgrade plan\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We produced a practical, minimally disruptive plan prioritising measures that actually move impact sound performance.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What the investigation revealed\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The slab itself was \u003Cstrong>not\u003C\u002Fstrong> the issue.\u003Cbr>The weak floor failed because of:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>hard flooring with \u003Cstrong>poor‑quality underlay\u003C\u002Fstrong>\u003C\u002Fli>\n\u003Cli>missing or inconsistent \u003Cstrong>perimeter isolation\u003C\u002Fstrong>\u003C\u002Fli>\n\u003Cli>ceiling penetrations and access hatches acting as flanking paths\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>In the better‑performing stack:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>floor‑finish strategy was better\u003C\u002Fli>\n\u003Cli>perimeter detailing was controlled\u003C\u002Fli>\n\u003Cli>ceiling penetrations were closed out properly\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>Thus, identical slabs resulted in \u003Cstrong>very different acoustic outcomes\u003C\u002Fstrong> depending on fit‑out quality.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>The upgrade plan recommended\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Ch3>\u003Cstrong>Priority actions\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cul>\n\u003Cli>correct hard‑floor strategy in the failing stack (underlay + perimeter detail)\u003C\u002Fli>\n\u003Cli>close out ceiling penetrations acting as flanking routes\u003C\u002Fli>\n\u003Cli>seal service penetrations connecting voids\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Secondary actions\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cul>\n\u003Cli>consider ceiling upgrades only if floor improvements alone are insufficient\u003C\u002Fli>\n\u003Cli>standardise detail across similar units to prevent repeating the issue\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>The plan focused on \u003Cstrong>practical improvements for occupied buildings\u003C\u002Fstrong>.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Outcomes\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The client gained:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>clarity on the true weak floor build‑up\u003C\u002Fli>\n\u003Cli>evidence to support resident communication\u003C\u002Fli>\n\u003Cli>a targeted scope instead of broad, unnecessary works\u003C\u002Fli>\n\u003Cli>reduced risk of spending money on ineffective measures\u003C\u002Fli>\n\u003Cli>a clear route to verify improvement after upgrades\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Common mistakes this project avoided\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cul>\n\u003Cli>treating impact‑noise complaints as general snagging\u003C\u002Fli>\n\u003Cli>upgrading ceilings everywhere instead of addressing floor build‑ups\u003C\u002Fli>\n\u003Cli>ignoring perimeter detailing and flanking routes\u003C\u002Fli>\n\u003Cli>applying one solution across all flats without diagnosis\u003C\u002Fli>\n\u003Cli>committing to remediation without proving the root cause\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>CTA\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>If you are dealing with noise complaints and need to know \u003Cstrong>which element is actually failing\u003C\u002Fstrong>, ATSPACE pre‑improvement sound insulation testing pinpoints the weak floor and the flanking routes driving the problem — giving you a clear upgrade scope and a way to prove improvement after works.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Ask for:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n\u003Cli>complaint‑led airborne + impact sound testing\u003C\u002Fli>\n\u003Cli>diagnosis of weak floor build‑ups + flanking routes\u003C\u002Fli>\n\u003Cli>targeted upgrade plans aligned with Part E\u003C\u002Fli>\n\u003Cli>verification testing after improvements\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Frequently asked questions\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Can you investigate noise complaints in occupied flats?\u003C\u002Fstrong>\u003Cbr>Yes — with planned access and minimal disruption.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>What’s the difference between airborne and impact 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