Potton Building Fabric Solution Thermal and Acoustic Protection for Your Home At Potton, we understand that you want your dream home, but you want it to be at the cutting edge of construction techniques and quality. Your home should be comfortable and warm, but shouldn t cost the earth to heat, or be any less environmentally sustainable than it can be. We understand the importance of using sustainable construction methods to lower energy costs and provide the best internal environment for you and your family. As part of the Kingspan Group of Companies (www.kingspan.com), Potton is ideally placed to understand how best to achieve this and has the expertise to help you build the most efficient home, saving you money and lowering your carbon footprint in the process. This is a guide for Potton customers to help you understand the insulation package that we offer as part of our build. 1
The Potton Insulation Service Making sure that the energy performance of your new home achieves your expectations is extremely important, after all you only have one chance to get this right. To ensure that your home complies with the SAP calculation and that the Energy Performance Certificate (EPC) can be issued at completion of your build, the building fabric must be constructed in accordance with the SAP assessment. To help you achieve this, Potton can establish an insulation strategy that meets your needs and complete your SAP assessment free of charge. We will then supply a complete insulation package to ensure that your entire building envelope conforms to the standards required. Our team of experienced and fully accredited SAP assessors will work with you to complete the necessary calculations taking into account the range of factors that contribute to energy efficiency: the materials used in the construction (thermal mass) the thermal insulation of the building fabric the level of air tightness of the building the heating and hot water system and controls the ventilation system used in the building the amount of low energy lighting the fuels used to provide heating, hot water, ventilation and lighting the glazing type and orientation (solar gains). The Potton insulation package includes all the necessary insulation to complete your build, to the right specification and in accordance with your SAP assessment. This includes: a FREE SAP assessment (refundable on order of insulation) a condensation risk analysis of each building element all necessary Kingspan Kooltherm floor, wall and roof insulation products all loft quilt insulation all partition wall and floor sound insulation 2
For most people, building your family home is a once in a life time ambition and choosing the right specification for your building envelope is incredibly important and a decision that you must get right. Potton s building fabric solutions represent the next generation in building performance and use only the highest performing insulation products, including the premium performance Kingspan Kooltherm Insulation. Kingspan Kooltherm(TM) Insulation Kingspan Kooltherm is an extensive range of premium performance rigid phenolic insulants. Kooltherm offers the following benefits: the thinnest commonly used insulation to achieve any given U-Value a thermal conductivity as low as 0.019 W/m.K these are the most thermally efficient insulation products commonly used the insulation is Class O in terms of surface spread of fire as defined by the Building Regulations the closed cell structure resists both moisture and water vapour ingress safe and easy to install nonfibrous 3
Kingspan Insulation Specification These products are premium performance rigid thermoset phenolic insulations manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP). Both the K3 and K7 come in board sizes of 2.4metres x 1.2metres Kingspan Kooltherm K3 Thermal conductivity (insulant thickness) Compressive strength at 10% compression 0.021 W/m.K ( 25 44 mm) 0.020 W/m.K ( 45 mm) 120 kpa Kingspan Kooltherm K7 Thermal conductivity (insulant thickness) 0.023 W/m.K (15-24mm 0.021 W/m.K (25 44 mm) 0.020 W/m.K ( 45 mm) 4
Slab Insulation Giving a U-Value of around 0.17 W/m 2 K (dependent on slab area to perimeter ratio) for the Slab, Potton offer a 90mm Kingspan Kooltherm (K3) Slab Insulation Layer and 60mm K3 Slab Edge Perimeter Insulation. The 60mm K3 perimeter insulation is supplied as full sheets for cutting on site. 5
Unheated Floor Insulation Giving a U-Value of 0.2 W/m 2 K for the unheated floor space, Potton offer 2 layers of 100mm Knauf Earthwool Flexible Slab insulation. Used for areas to a floor that abut the outside air space, for example above a garage or a jettied gable. 6
Plane Roof Insulation Giving a U-Value of 0.11 W/m 2 K for the areas shown, Potton offer 2 Layers of 200mm Knauf Earthwool loft roll. Used for area above a flat ceiling that does not have another room above. 7
Attic Truss Insulation For 197 or 222mm Rafters Giving a U-Value of 0.15 to 0.13 W/m 2 K (dependent on 400 or 600 centre spacing) for the sloping ceiling areas, Potton offer 2 layers of 80mm Kingspan K7 Insulation. Used for any area of eaves where attic trusses are utilised. 8
Sloping Ceiling Insulation For 140mm Rafters Giving a U-Value of 0.16 W/m 2 K for the sloping ceiling areas, Potton offer 1 x layer of 110mm Kingspan K7 Insulation and 1 x layer of 25mm Kingspan K7 Insulation. Used for any area of sloping ceiling that abuts a heated room. NOTE : The layer of 25mm Insulation is below the Rafters. 9
Sub-roof Void Insulation 120mm Loose K12 Insulation for the loose filled walls and 2 Layers of 200mm Knauf Earthwool loft roll for the plane ceiling. For any eaves sub-roof void area as shown. 10
Intermediate Floor Insulation 100mm Acoustic Roll. For any area between joists that separates two heated rooms. 60mm K3 Intermediate floor Perimeter Insulation The 60mm K3 perimeter insulation is supplied as full sheets for cutting on site. 11
Internal Wall Insulation 100mm Acoustic Roll. For all internal walls. 12
Party Wall Insulation Cavity Fill 60mm Knauf Earthwool timber frame party slab. Separating Walls 85mm Knauf Earthwool timber frame party slab. Used for party walls between 2 or more separate homes. 13
Cavity Barrier Insulation 50-65mm Knauf SIG Barriers. Required to close off cavities as detailed when a heavyweight cladding is used and around the Verge. 14
SVP Insulation 25mm Mineral Wool Insulation. Required around the Soil Vent Pipe/Pipes. 15
Find out more For further information about the Potton insulation offering please contact us via the button below or contact the office on 01767 676400 16