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BUILDING LEAKAGE TEST HPD Building Compliance Ltd Cherry Tree House High Street Thorndon, Suffolk IP23 7LX Phone: 01379 678092

Date of Test: 20th April 2015 Test File: Plot F42 Union Road, Clapham Customer:

Technician: David Taylor (BINDT Reg. 0276)

Durkan Limited Building Address: 4 Elstree Gate Elstree Way Borehamwood, Hertfordshire WD6 1JD Phone: Fax:

Test Results at 50 Pascals: V50: Airflow (m³/h) n50: Air Changes per Hour (1/h) w50: q50: m³/(h*m² Surface Area)

Block A, Fourth floor, Type A9 Plot F42, Flat 16 Union Road Clapham, London SW4 6JP

635 ( +/- 0.5 %)

2.79

Leakage Areas:

253.8 cm² ( +/- 2.8 %) Canadian EqLA @ 10 Pa or 1.12 cm²/m² Surface Area 136.4 cm² ( +/- 4.4 %) LBL ELA @ 4 Pa or 0.60 cm²/m² Surface Area

Building Leakage Curve:

Air Flow Coefficient (Cenv) = 52.1 ( +/- 6.8 %) Air Leakage Coefficient (CL) = 52.3 ( +/- 6.8 %) Exponent (n) = 0.639 ( +/- 0.018 ) Correlation Coefficient = 0.99737

Test Standard: Type of Test Method: Equipment:

EN 13829 Test Mode: Depressurization B Regulation complied with: ADL1A 2010 Model 3 Minneapolis Blower Door, S/N 11812

Inside Temperature: Outside Temperature: Barometric Pressure: Wind Class: Building Wind Exposure: Type of Heating: Type of Air Conditioning: Type of Ventilation:

18 °C 17 °C 101325 Pa 3 Gentle Breeze Partly Exposed Building gas boiler to wet Rads

Volume: Surface Area: Floor Area: Uncertainty of Building Dimensions: Year of Construction:

228 m²

2% 2015

Central Extract

900 800 700 600 500 Building Leakage (m³/h)

400 300 200

100 4

5

6

7 8 9 10

20 30 Building Pressure (Pa)

40

50 60 70 80

BUILDING LEAKAGE TEST Page 2 Date of Test: 20th April 2015 Test File: Plot F42 Union Road, Clapham Comments Fourth floor flat wet Rads Temp seals to Central Extract registers Water in all traps DAP 3.0 Data Points: Depressurization Nominal Building Fan Pressure Pressure (Pa) (Pa) -1.0 n/a -66.8 61.4 -60.9 54.5 -55.7 48.9 -51.0 45.4 -46.5 38.9 -40.7 31.8 -31.7 183.4 -31.5 174.8 -27.1 137.0 -0.0 n/a Test 1 Baseline (Pa):

Nominal Flow (m³/h)

Temperature Adjusted Flow (m³/h)

% Error

762 717 677 653 602 543 484 473 416

760 715 675 650 600 541 483 471 415

-0.1 -0.3 -0.3 1.7 -0.3 -2.1 2.7 0.6 -2.4

p01- = -1.2

p01+ = 0.2

p02- = -0.2

p02+ = 0.1

Fan Configuration Ring B Ring B Ring B Ring B Ring B Ring B Ring C Ring C Ring C