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Green block with bg pattern","px-7","border-b",{"name":16,"componentName":17,"cols":18,"colsMD":19,"customColSpan":20,"parentAlign":21,"bgImage":9,"inlineStyles":9,"bgColor":9,"group":23,"margin":9,"padding":9,"classes":9,"colSpan":9,"id":75,"originalModel":76,"borderWidth":9,"borderColor":9,"borderRadius":9,"sticky":20,"stickyTop":65,"stickyDisableSmall":20,"paddingVertical":90,"borderPosition":9,"paddingHorizontal":91},"0634e860-5bb2-42de-aa57-b2272d325b7a",[77],[78,80],{"id":79,"colSpan":29,"colSpanSM":30,"colSpanMD":31,"colSpanLG":32,"customColSpan":20,"bgColor":9,"borderWidth":9,"borderColor":9,"borderRadius":9,"classes":9,"borderPosition":9},"769b7f36-06b0-4bcc-9fc7-b1935051d677",{"name":35,"componentName":17,"nested":13,"cols":18,"colsMD":19,"customColSpan":20,"parentAlign":21,"bgImage":9,"inlineStyles":9,"bgColor":9,"group":36,"margin":9,"padding":9,"classes":9,"colSpan":9,"id":81,"originalModel":82,"borderWidth":9,"borderColor":9,"borderRadius":9,"sticky":20,"stickyTop":65,"stickyDisableSmall":20,"containerWidth":64,"borderPosition":9},"e7c2eabd-f877-467a-89f0-aa8ef8b7f411",[83],[84,86],{"id":85,"colSpan":29,"colSpanSM":30,"colSpanMD":31,"colSpanLG":32,"customColSpan":20,"bgColor":9,"borderWidth":9,"borderColor":9,"borderRadius":9,"classes":9,"borderPosition":9},"c37da2da-dc4c-4238-938b-031fe5501f7d",{"name":46,"componentName":47,"group":48,"margin":9,"padding":9,"classes":9,"bgImage":9,"id":87,"originalModel":88},"30243da6-e294-4dbe-9226-f959bbb2a3d8",{"proseEnabled":13,"content":89,"lineHeightClass":52,"trackingClass":53,"spacingClass":54},"\u003Cdiv 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>The handover pack was nearly complete, but the client wanted one thing confirmed:\u003Cbr>Were the trickle vents \u003Cstrong>actually working\u003C\u002Fstrong>, not just installed?\u003C\u002Fp>\n\u003Cp>ATSPACE carried out background ventilation testing across the phase, verified vent type and equivalent area, checked airflow paths, confirmed smooth operation, and identified a few repeat installation issues before keys were released.\u003C\u002Fp>\n\u003Cp>The outcome was a \u003Cstrong>clean Part F readiness position\u003C\u002Fstrong>, fewer future condensation‑related complaints, and a clear evidence trail showing vents were functional, not just fitted.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Project snapshot\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Service:\u003C\u002Fstrong> Background ventilation testing\u003Cbr>\u003Cstrong>Client:\u003C\u002Fstrong> Regional housebuilder + main contractor\u003Cbr>\u003Cstrong>Site:\u003C\u002Fstrong> Alder Brook View, 1–12 Hazel Lane, Solihull B90 2GF\u003Cbr>\u003Cstrong>Building type:\u003C\u002Fstrong> New build 2‑ and 3‑storey houses\u003Cbr>\u003Cstrong>Ventilation strategies:\u003C\u002Fstrong> System 1 and System 3 MEV\u003Cbr>\u003Cstrong>Programme stage:\u003C\u002Fstrong> Handover — final QA\u003Cbr>\u003Cstrong>Compliance driver:\u003C\u002Fstrong> Approved Document F + quality assurance\u003Cbr>\u003Cstrong>ATSPACE delivery:\u003C\u002Fstrong> Vent verification, operation checks, airflow‑path checks, repeat‑defect list, handover summary\u003Cbr>\u003Cstrong>Team:\u003C\u002Fstrong> ATSPACE compliance engineer + site coordinator\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Why the client requested background ventilation testing\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>Extract fans are always tested because they are the obvious Part F requirement.\u003Cbr>Trickle vents, however, are often assumed to be fine — a dangerous assumption.\u003C\u002Fp>\n\u003Cp>Faulty or obstructed vents cause:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>condensation and mould\u003C\u002Fli>\n\u003Cli>“heavy” air and comfort complaints\u003C\u002Fli>\n\u003Cli>poor extract fan performance\u003C\u002Fli>\n\u003Cli>difficult customer‑care call‑backs\u003C\u002Fli>\n\u003Cli>heating used excessively because rooms \u003Cem>feel\u003C\u002Fem> damp\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>The contractor wanted proof that vents worked before handing homes to occupants — not learning the hard way after occupation.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What background ventilation testing checks\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>Background ventilation testing verifies three essential points:\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>1. The correct vent is installed\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Matches window schedule, ventilation strategy and required equivalent area.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>2. The vent is functional\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Opens and closes smoothly, not jammed by:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>paint\u003C\u002Fli>\n\u003Cli>mastic\u003C\u002Fli>\n\u003Cli>trim\u003C\u002Fli>\n\u003Cli>debris\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>3. Air can enter through the vent into the room\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We check:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>airway not blocked by finishes\u003C\u002Fli>\n\u003Cli>internal frame details not obstructing airflow\u003C\u002Fli>\n\u003Cli>insulation not encroaching\u003C\u002Fli>\n\u003Cli>vent not sealed shut\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>This is about \u003Cstrong>real airflow\u003C\u002Fstrong>, not paperwork.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>The site risk profile\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The site was well run, but typical handover risks existed:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>multiple window installers over time\u003C\u002Fli>\n\u003Cli>decorators completing late\u003C\u002Fli>\n\u003Cli>snaggers adjusting trims after vents fitted\u003C\u002Fli>\n\u003Cli>vents left closed by default for demo packs\u003C\u002Fli>\n\u003Cli>mixed plot types with different vent quantities\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>The core question:\u003Cbr>\u003Cstrong>Are vents installed, sized and working consistently across the phase?\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What ATSPACE did on site\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Ch3>\u003Cstrong>Step 1: Design check by plot type\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We reviewed room layouts to confirm required vent positions and quantities, including acoustic‑vent locations.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 2: Plot‑by‑plot walkthrough\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>For each vent we checked:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>correct type and location\u003C\u002Fli>\n\u003Cli>smooth opening\u002Fclosing\u003C\u002Fli>\n\u003Cli>unobstructed airway\u003C\u002Fli>\n\u003Cli>internal finishes not blocking airflow\u003C\u002Fli>\n\u003Cli>not sealed by paint\u002Fmastic\u003C\u002Fli>\n\u003Cli>correct number per room\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Step 3: Air‑path checks linked to Part F\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We inspected internal transfer routes:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>door undercuts\u003C\u002Fli>\n\u003Cli>restrictors\u002Fsliders\u003C\u002Fli>\n\u003Cli>internal pressure dynamics\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>If vents work but air cannot move through the dwelling, ventilation fails.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 4: Repeat‑defect control\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>When an issue repeated across plots, we:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>identified the pattern\u003C\u002Fli>\n\u003Cli>predicted affected plots\u003C\u002Fli>\n\u003Cli>provided one standard fix\u003C\u002Fli>\n\u003Cli>verified close‑out on a sample\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Step 5: Summary for handover file\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We documented:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>checks completed\u003C\u002Fli>\n\u003Cli>defects found\u003C\u002Fli>\n\u003Cli>fixes implemented\u003C\u002Fli>\n\u003Cli>controls introduced\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>What we found and fixed\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Ch3>\u003Cstrong>Finding 1: Vents installed but airway partially blocked\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Finish interfaces restricted the slot.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Fixed by:\u003C\u002Fstrong> Correcting the interface and clearing the airway.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Finding 2: Paint and mastic affecting operating sliders\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Some vents were stiff or jammed.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Fixed by:\u003C\u002Fstrong> Freeing components and updating the decorator snag checklist.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Finding 3: Vent quantity mismatch\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Window type variations removed vents in some rooms.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Fixed by:\u003C\u002Fstrong> Installing missing vents and adding a schedule cross‑check.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Outcome\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The development achieved a \u003Cstrong>fully verified Part F position\u003C\u002Fstrong> at handover.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Project outcomes\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n\u003Cli>fewer ventilation‑related snags\u003C\u002Fli>\n\u003Cli>reduced condensation risk\u003C\u002Fli>\n\u003Cli>stronger confidence in Part F compliance\u003C\u002Fli>\n\u003Cli>simple repeatable process for future phases\u003C\u002Fli>\n\u003Cli>clear evidence for handover documentation\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Common mistakes this project avoided\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cul>\n\u003Cli>assuming vents are fine because they \u003Cem>look\u003C\u002Fem> fine\u003C\u002Fli>\n\u003Cli>doing visual checks without airflow checks\u003C\u002Fli>\n\u003Cli>letting paint\u002Fmastic jam vent sliders\u003C\u002Fli>\n\u003Cli>missing vent‑quantity variation across elevations\u003C\u002Fli>\n\u003Cli>handing plots over with vents closed by default\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>CTA\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>If you want to reduce condensation complaints and avoid Part F issues at handover, ATSPACE background ventilation testing ensures your trickle vents are \u003Cstrong>installed, functional and delivering real airflow\u003C\u002Fstrong>.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Ask for\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n\u003Cli>background ventilation testing at handover\u003C\u002Fli>\n\u003Cli>trickle‑vent verification against plot schedules\u003C\u002Fli>\n\u003Cli>snag identification and repeat‑defect plans\u003C\u002Fli>\n\u003Cli>combined testing with Part F airflow measurements\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Frequently asked questions\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Are trickle vents part of Part F compliance?\u003C\u002Fstrong>\u003Cbr>Yes — they are essential where the ventilation strategy relies on background air inlets.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Why do trickle vents cause condensation problems?\u003C\u002Fstrong>\u003Cbr>Missing or blocked vents stop moisture dilution — especially in bedrooms.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Do you verify equivalent area?\u003C\u002Fstrong>\u003Cbr>Yes — we confirm vents match the schedule and design intent.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>When should background ventilation be tested?\u003C\u002Fstrong>\u003Cbr>At handover, once finishes are complete but before keys are 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