The brief
-
We were instructed to complete a combination of L1B SAP Calculations, Sound Insulation Testin g and Water Efficiency Calculations on this proposed conversion of an existing commercial space into two domestic flats
-
The Sound Insulation Tests consisted of Airborne Floor, Airborne Wall and Impact Floor Tests
-
To pass this Airborne test, you must score 45db or hig her
-
Airborne tests measure the difference in sound levels between the receiver room and neighbouring walls or floors
-
If the sound output in the receiver room is 100db and the sound leakage being passed through into the neighbouring room is 40db, then the result would be 60 and therefore would be a pass
-
To pass this Impact tests, you must score 62 db or lower
-
Impact tests measure how effectively the Sound Insulation between floors cancels out sound. If there is less than 62 decibels of sound leaking through into below floors then these tests would be a pass
The process
- After reviewing drawings, on site testing was ready to be completed. All calibrated equipment was setup in accordance to our strict procedures to ensure the most accurate result possible
The results
Airborne Floor Target
≥ 45
Shop - Flat 2 Bedroom
≥ 45
Shop - Flat 2 Living Room/Kitchen
Impact Floor Target
Flat 2 Bedroom - Shop
Flat 2 Living Room/Kitchen - Flat 2 Living Room/Kitchen
Airborne Wall Target
≥ 45
Flat 2 Living Room/Kitchen - Flat 1 Bedroom
≥ 45
Flat 1 Living Room/Kitchen - Flat 2 Bedroom
Airborne Floor Result
Shop - Flat 2 Bedroom
Shop - Flat 2 Living Room/Kitchen
Impact Floor Result
Flat 2 Bedroom - Shop
Flat 2 Living Room/Kitchen - Flat 2 Living Room/Kitchen
Airborne Wall Result
Flat 2 Living Room/Kitchen - Flat 1 Bedroom
Flat 1 Living Room/Kitchen - Flat 2 Bedroom
- SAP RESULTS
Flat 121a - Notional Dwelling Emission Rate (DER)
Flat 121a - Notional Dwelling Fabric Energy Efficiency (DFEE)
Flat 121b - Notional Dwelling Emission Rate (DER)
Flat 121b - Notional Dwelling Fabric Energy Efficiency (DFEE)
Flat 121a - Proposed Dwelling Emission Rate (DER)
Flat 121a - Proposed Dwelling Fabric Energy Efficiency (DFEE)
Flat 121b - Proposed Dwelling Emission Rate (DER)
Flat 121b - Proposed Dwelling Fabric Energy Efficiency (DFEE)
-
Compliant
-
The building’s Sound Tests, particularly the Impact Floor and Airborne Wall Tests achieved extremely good scores which shows a very good level of Sound Insulation
-
We achieved a Water Efficiency Rate of 109.65 Litres per person per day, the Target being ≤ 110L
-
Our Combined Compliance Package offers excellent value