1. Moisture
1.1. Moisture/vapoure open Moisture/vapoure closed Important to collect moisture information like (Im)permiable renders, damp spots, etc.
2. Condition
2.1. Looking for condition defeclts that affect the thermal or moisture charactistics. Mirroring - checking for confirmation of an issue on the other side of a component. NB to label photos of defects with loactions. - Strcutural defects, condensation, mold growth, leaks and poor pointing should be sorted into two catagories - def fix before RF and nice to fix before RF.
2.1.1. With Roofs look for blocked/damaged gutter system, missing/moved/broken tiles, many tingles, health of soffit and fascia With Chimneys look for, health of flaunching, Spalling of brickwork, shape deformatuon.
2.1.2. Cracks - conform to and record by the Burland Scale - saging, hanging, differenctial. Wtach for weak lentils leading to cracking. Discoulring and flacking in render can indicate moisture issues.
2.1.3. With floor - springy floor boards, slopes, sunken areas, hieght differneces.
3. Project Start
3.1. Coordinators start projects, it is important to understand what information they have collected before starting. Refer to current/past EPCs for prop. Local Planning Authority site for alterantion requests history. Reference material that you are summerising. Check for a ‘Electrical Installation Condition Report’ (EICR) and Gas safety report. Check for a Housing, Health and Safety Rating System (HHSRS) report and National Heritage List Check for Raddon, Coal, Near by pollution emmiters status, consider localised and national expsore to wind/rain. Get pics of 'party structures' if they may affect the EEM selcetion. Check foe tree preseravtion orders on trees that might affect EEM selcetion.
4. .
4.1. Detailed site drawing
4.1.1. To EPC standard plus orientaion of building, Any extensions need to be included, window deatils - suraface area, orientaion, direction of opening. Internal wall construction and thickness, thickness of intermidate floors, internal doors, fitted furnichure, ID fire doors, all Utility assets, heritage features and gross internal area Record obsticals to I/EWI. Obsticals to assess site.
5. Heat transfser
5.1. Convection - air to air Radiation - electric mangnent wave Conduction - solid to solid
5.2. Thermal Transmittance - U value - the rate of heat loss through a building component (eg wall). U = 1/(sum of R and Rsi/Rse values (Rt))
5.3. Thermal Conductivity - lamba value - W/mK is the heat energy per second that can travel across 1m thick of the material, when there is a temperature difference of 1 K (Kelvin)
5.4. Thermal Resistance (R-value) is the resistance of the material against the flow of heat via conduction. = d/k . (distance travelled)
5.5. Surface Resistance (m2K/W) is stated as an attempt to account for heat loss from the surface due to convection and radiation. The best way to think of it is as a boundary layer of air that is right next to the wall cushioning it or insulating it, from the main air temperature. This effect will be stronger or weaker in a closed space depenong on the orientaion of the space.
5.6. Heat Loss (Watts/Joules per second) = U value x Area x Delta Temp (Ti-Te)
6. Princples of PAS 2035
6.1. PAS 2035
6.1.1. Each Home counts Reveiw - 2016 was trigger
6.1.2. Trustmark is supported by customer charater.
6.1.3. Is a code of practise
6.2. Assessors collect the data for a risk assessment
6.2.1. No of dewling in project
6.2.2. No of EEM per dewlling
6.2.3. EEM compexity/risk
6.2.4. Comdinations of EEM Matrix
6.2.5. Construction and build form
6.2.5.1. Covential - Masonsry wall w/wo external cladding
6.2.5.2. Traditional - Solid brick/stone wall or timber frame with any infill.
6.2.5.3. System Build - A frame filled with prefabitacted pannels.
6.2.5.4. High rise - Above 12M/4 stories.
6.2.5.5. Protected building
6.3. Whole house retrofit -
6.3.1. Retrofit that ensures improvements are carried out in an organised, sensible order, with installations complementing each other rather than working against each other
6.3.2. starts with a full understanding of the property including its age, construction, condition, occupancy and suitability for improvement.
6.4. Assessmet areas
6.4.1. Condition Context Occupancy Significance Venitilation Energy preformace
6.5. Customer Journey
6.5.1. Initial enagement - understanding behavioural use and vulnerability. Reducing energy costs by changing energy provider. Discuss possible EEMs with fabric first. Explain PAS process, how to find coordinator, etc. Handover - Reflect of EEMs effect, behavioural pattern cahnge, repair and maintiace process, any close out aduits needed.
6.5.2. Advise when - project inception, EEM option evelation complete, after authority application results, retrofit design complete, after install. After option eval - advise when planning permission dis/approved, Visit or call from Retrofit Advisor Visit from Retrofit Assessor Involvement of the Retrofit Coordinator Consultation over correct EEM Installer pre-installation visit (PAS 2030) Installation (PAS 2030) Commissioning (PAS 2030) Handover (PAS 2030) Monitoring Visit.
6.6. sources of help and support
6.6.1. Information - energy saving trust, trustmark, financial - ECO, Energy Price Guarantee, Economy 7 Traiff, Cold weather payment, Smart export gaurentee, warm home discount, winter fuel payment, boiler upgarde general - priority services register,
6.7. Ventilation
6.7.1. System Types
6.7.1.1. intermittent extract ventilation (IEV) passive stack ventilation (PSV) continuous positive input ventilation (PIV) continuous mechanical extract ventilation (MEV) mechanical ventilation with heat recovery (MVHR)
6.7.2. Factors to consider
6.7.2.1. Pollution proximity of expernal envuroment Occupant behaviour Air tightness of exisitng buildinds Plant space Moisture control Winter Mode - heat recovery Summer mode - shading and passive cooling.
6.8. Things Assessor is not responisble
6.8.1. an improvement option evaluation - PAS 2035 paths B or C