PowerPoint Presentation

[Virtual Presenter] Today we will be looking at how to evaluate the options for introducing energy efficiency measures to older and traditional buildings. We will cover topics such as comparing the thermal performance of modern and traditional construction, understanding hygrothermal properties of traditional buildings, and various factors such as thermal mass, moisture transport mechanisms, hygroscopicity, vapor permeability, buffer capacitance, condensation, dew point, vapor pressure, and absolute relative humidity. We'll also be considering the implications of introducing energy efficiency measures to these buildings, as well as exploring appropriate technical solutions. At the end of this session, you will understand how to evaluate the options for introducing energy efficiency measures to older and traditional buildings in accordance with BS 7913..

Qualification Details. Unit Recognising the Age, Nature and MIO M Characteristics of Older and Traditional Buildin s Evaluating the Options for Introducing Energy M Efficiency Measures to Older and Traditional Buildings Make Recommendations and Provide Advice on the M Introduction of Energy Efficiency Measures to Older and Traditional Buildings Level 3 3 3 Ofqual unit Ref D/650/4481 M/650/4478 R/650/4479 Credits 1 1 1 GLH 7 7 7 Assessment Multiple choice test Multiple choice test Multiple choice test.

[Audio] Solid walls and timber frames are the basis of the built environment in the United Kingdom. They are created with various materials and techniques that are distinct from those of current structures. Whereas modern constructions utilize layers of mostly impenetrable materials to prevent moisture, classic constructions take in moisture and are composed to slowly discharge it into the surroundings as circumstances get drier. Building regulations in England, Wales, Scotland and Northern Ireland all accept the singular demands of traditional edifices and demand special precautions in order to preserve their permeable nature..

[Audio] Understanding the unique characteristics of traditional buildings is essential in order to ensure that the right materials and techniques are used for preservation. These characteristics can vary significantly from modern construction methods, and must be taken into consideration when selecting materials and techniques. Factors such as hygrothermal performance, material properties, thermal mass, moisture transport mechanisms, hygroscopicity, vapor permeability, buffer capacitance, condensation, dew point, vapor pressure, and absolute relative humidity must all be explored in order to ensure success in energy efficiency measures..

[Audio] Understanding the performance of traditionally constructed buildings requires expertise in the ability of thermal mass to absorb, store, and release heat, as well as the interactions between moisture transport mechanisms, such as diffusion, convection, capillary suction and gravity. Material properties, including hygroscopicity and vapor permeability, must be taken into account for optimal results. Buffering moisture and temperature fluctuations is another important factor. Condensation and dew points, vapor pressure, and absolute relative humidity must also be considered. The impact of ventilation and air movement should not be overlooked when retrofitting traditional buildings..

[Audio] In order to ensure that property owners and occupiers are able to choose the energy efficiency measure most appropriate to their situation, it is essential to be aware of the range of options available and the benefits they can bring. There is a comprehensive selection of energy efficiency measures suitable for different buildings and people. In many cases, popular measures such as loft insulation, cavity wall insulation, draft proofing, external wall insulation, internal wall insulation, room in roof insulation, floor & door insulation, double & secondary glazing, hydro turbines, wind turbines, biomass stoves and boilers, heat pumps, electricity generation kits, photovoltaics, solar thermal, boiler, pipework, distribution systems and heating controls and thermodynamic panels can be used to increase energy efficiency in a property. It is essential to confirm which of these measures is best for a certain property and its occupants..

[Audio] Mechanical Extract Ventilation is often the most efficient solution for structures that require extra ventilation. Extract fans pull air from the exterior and expel old air from the interior. Purge ventilation entails opening windows and doors to permit air to move. Background ventilation is an alternative and can be in the shape of trickle vents or wall vents. Additionally, door undercuts of either 10mm or 20mm are a well-liked selection for rooms with unfinished floors to let air to circulate freely..

[Audio] When discussing older and traditional buildings, roofing materials often include wood shingles, thatch, slate, and clay tiles. For walls, cob, brick, wattle and daub, and stone were usually employed, whilst floors were commonly constructed with wood, stone, or fired clay tiles. Wooden doors and windows accompanied traditional buildings, whilst tall chimneys and fireplaces were mainly used to maintain warmth. Vernacular designs would tend to use materials from the local area. Finally, breathable materials, such as lime, clay, and hemp, were used in walls and roofs in order to help maintain temperature and moisture levels..

[Audio] Energy efficiency is essential in older and traditional buildings. Roofs, floors and walls must all be improved to maximize energy efficiency. Pre-1919 traditional buildings commonly use breathable, moisture-permeable surfaces which permit moisture to pass through the building and vaporize into the air. This is particularly true for strong brick walls, but it applies to fill panels in wood-framed buildings, rock floorings, plasterwork, and both internal and external ornamental finishes. Although moisture permeability may appear simple, the behavior of liquid water and water vapor plus their effects on the building surface and internal environment can be very intricate..

[Audio] Understanding the permeability characteristics of building materials is a key factor in preserving the health of traditional buildings. The amount of moisture that soaks into a material's surface when exposed to wet conditions, such as rain, is dependant on the material's porosity and degree of exposure. In most cases, damp penetration is due to neglected maintenance and not faulty original construction. For example, open joints in masonry can let in a significant amount of water. The permeability of exterior materials, however, allows moisture to escape the structure once the rain stops, creating a two-way flow that is essential for the building's health and prevents moisture levels from reaching a damaging level..