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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>A new build plot was expected to perform well on paper, but Smart HTC testing showed the home was losing heat \u003Cstrong>around 25% faster than the design expectation\u003C\u002Fstrong>. ATSPACE used the result to guide a targeted investigation, pinpointed the dominant heat‑loss routes, and provided practical close‑out actions. A follow‑up verification confirmed that performance was brought back toward the design target, reducing comfort‑risk and strengthening the handover position.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Project snapshot\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>Service:\u003C\u002Fstrong> Smart HTC testing and performance‑gap investigation\u003Cbr>\u003Cstrong>Client:\u003C\u002Fstrong> Developer and principal contractor\u003Cbr>\u003Cstrong>Site:\u003C\u002Fstrong> Plot 14, 3 Brookstone Mews, Oakhill Park, Milton Keynes MK7 7QF\u003Cbr>\u003Cstrong>Building type:\u003C\u002Fstrong> 3‑bed end‑terrace new build\u003Cbr>\u003Cstrong>Construction:\u003C\u002Fstrong> Masonry cavity wall, insulated slab, warm roof, high‑performance glazing, intermittent extract ventilation\u003Cbr>\u003Cstrong>Programme stage:\u003C\u002Fstrong> Pre‑handover, post‑commissioning\u003Cbr>\u003Cstrong>Reason for test:\u003C\u002Fstrong> Quality‑assurance sampling across house types\u003Cbr>\u003Cstrong>ATSPACE delivery:\u003C\u002Fstrong> Smart HTC measurement, design comparison, investigation, close‑out actions, verification support\u003Cbr>\u003Cstrong>Team:\u003C\u002Fstrong> ATSPACE building performance engineer and compliance coordinator\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Why the client needed an answer, fast\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The developer wanted to avoid a situation where a home:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>looks complete\u003C\u002Fli>\n\u003Cli>\u003Cstrong>feels cold or draughty in use\u003C\u002Fstrong>\u003C\u002Fli>\n\u003Cli>needs more heating than expected\u003C\u002Fli>\n\u003Cli>prompts customer‑care complaints\u003C\u002Fli>\n\u003Cli>raises questions about build quality vs design intent\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>Plot 14 showed a clear heat‑loss gap. The priority became moving from a \u003Cstrong>number\u003C\u002Fstrong> to a \u003Cstrong>cause\u003C\u002Fstrong>.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What Smart HTC revealed\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The Smart HTC test showed the home was losing heat \u003Cstrong>~25% faster\u003C\u002Fstrong> than design modelling predicted.\u003C\u002Fp>\n\u003Cp>This usually indicates one or more of:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>uncontrolled air leakage\u003C\u002Fli>\n\u003Cli>thermal bypass at junctions\u003C\u002Fli>\n\u003Cli>insulation discontinuities\u003C\u002Fli>\n\u003Cli>voids or service penetrations acting as heat‑loss pathways\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>A targeted, site‑led investigation was required to find the real driver.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What ATSPACE did\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Ch3>\u003Cstrong>Step 1: Compare design intent with as‑built construction\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We checked the original fabric strategy against actual on‑site delivery, focusing on high‑risk interfaces:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>slab‑edge and wall‑base continuity\u003C\u002Fli>\n\u003Cli>service entries and meter zones\u003C\u002Fli>\n\u003Cli>loft and ceiling penetrations\u003C\u002Fli>\n\u003Cli>window\u002Fdoor reveals and thresholds\u003C\u002Fli>\n\u003Cli>unheated adjacency (e.g., stores or garages)\u003C\u002Fli>\n\u003Cli>ventilation penetrations and sealing\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Step 2: Identify likely heat‑loss drivers\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Plot 14’s layout created two known risks:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>a \u003Cstrong>complex understairs service zone\u003C\u002Fstrong>\u003C\u002Fli>\n\u003Cli>a \u003Cstrong>junction with an unheated store\u003C\u002Fstrong>\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>These are common sources of thermal bypass or hidden leakage.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 3: Targeted checks, not cosmetic snagging\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We inspected only the interfaces that meaningfully influence HTC performance — not general finishes.\u003Cbr>Because the plot was still accessible, key areas could be checked before they were sealed.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>Step 4: Practical, repeatable close‑out actions\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>We issued a short, focused list of improvements that:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>broke heat‑loss pathways\u003C\u002Fli>\n\u003Cli>reinstated insulation\u002Fair‑barrier continuity\u003C\u002Fli>\n\u003Cli>could be repeated across similar house types\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>\u003Cstrong>Step 5: Verification\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>A follow‑up test confirmed that performance returned close to the design expectation.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What we found that explained the gap\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Ch3>\u003Cstrong>1. Understairs service zone acting as a bypass route\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>The void contained service entries and interfaces that allowed connected air movement.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Why it mattered:\u003C\u002Fstrong>\u003Cbr>Void networks can behave like invisible chimneys, increasing heat loss significantly.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Fix:\u003C\u002Fstrong>\u003Cbr>Seal service entries and the void boundary to break the pathway.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>2. Junction discontinuity at an unheated interface\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>The unheated store junction showed incomplete continuity between insulation and air‑barrier layers.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Why it mattered:\u003C\u002Fstrong>\u003Cbr>Even a small weak junction can heavily influence Smart HTC results.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Fix:\u003C\u002Fstrong>\u003Cbr>Reinstate continuous insulation and airtightness at the interface.\u003C\u002Fp>\n\u003Ch3>\u003Cstrong>3. Localised leakage at threshold and frame junctions\u003C\u002Fstrong>\u003C\u002Fh3>\n\u003Cp>Several door and frame lines lacked consistent seals.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Why it mattered:\u003C\u002Fstrong>\u003Cbr>Multiple small external leakage points create meaningful cumulative heat loss.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Fix:\u003C\u002Fstrong>\u003Cbr>Reinstate seals and verify closure pressure\u002Fcontinuity.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>Outcome\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>The client gained:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>a \u003Cstrong>measured, evidence‑based explanation\u003C\u002Fstrong> for the heat‑loss gap\u003C\u002Fli>\n\u003Cli>a \u003Cstrong>targeted remedial plan\u003C\u002Fstrong> instead of broad strip‑out\u003C\u002Fli>\n\u003Cli>clear lessons to apply across the remaining house‑type run\u003C\u002Fli>\n\u003Cli>reduced risk of cold‑spots, draughts and performance‑gap complaints\u003C\u002Fli>\n\u003Cli>stronger confidence going into handover\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>The key win was speed — moving from uncertainty to targeted remediation without wasting programme time.\u003C\u002Fp>\n\u003Ch2>\u003Cstrong>What this proves\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>Smart HTC testing converts design assumptions into \u003Cstrong>verify‑able reality\u003C\u002Fstrong>. It exposes heat‑loss drift early enough to correct it.\u003Cbr>The value is not just the measured number — it is how quickly it leads to:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>a practical diagnosis\u003C\u002Fli>\n\u003Cli>targeted fixes\u003C\u002Fli>\n\u003Cli>learnings applicable across the site\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Common mistakes this project avoided\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cul>\n\u003Cli>blaming heating systems before checking fabric\u003C\u002Fli>\n\u003Cli>focusing on visible gaps instead of connected bypass routes\u003C\u002Fli>\n\u003Cli>assuming small discontinuities cannot affect whole‑home performance\u003C\u002Fli>\n\u003Cli>discovering performance gaps after occupation\u003C\u002Fli>\n\u003Cli>fixing one plot without standardising the learning\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>CTA\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>If you suspect a design‑versus‑reality performance gap, ATSPACE Smart HTC testing can measure the \u003Cstrong>as‑built heat‑loss rate\u003C\u002Fstrong>, diagnose the cause and guide efficient corrective actions. It is one of the fastest ways to protect handover quality.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Ask for:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cul>\n\u003Cli>Smart HTC testing across representative plot samples\u003C\u002Fli>\n\u003Cli>performance‑gap investigation\u003C\u002Fli>\n\u003Cli>practical close‑out actions\u003C\u002Fli>\n\u003Cli>verification testing after improvements\u003C\u002Fli>\n\u003Cli>reporting for clients and handover packs\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>\u003Cstrong>Frequently asked questions\u003C\u002Fstrong>\u003C\u002Fh2>\n\u003Cp>\u003Cstrong>What does a heat‑loss gap usually mean?\u003C\u002Fstrong>\u003Cbr>Often a combination of leakage, junction discontinuity or thermal bypass — not one large defect.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Can a heat‑loss gap be fixed without major rework?\u003C\u002Fstrong>\u003Cbr>Often yes, if action targets the dominant pathways early.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Is Smart HTC useful even if airtightness results look good?\u003C\u002Fstrong>\u003Cbr>Yes. 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