External Rendering & Wall InsulationEWI can greatly reduce the amount of heat lost through your walls. Of the UK housing stock, over 30% have been built with soild walls. These have been classed as 'hard-to-treat', because they cannot be thermally improved with the use of cavity wall insulation. Unlike unfilled cavity wall homes, which lose approximately 30% of heat through their walls, solid wall homes will lose as much as 45% of space heat through untreated walls.Why Insulate ExternallyAs well as improving efficiency, Posh Rendering’s EWI systems can revitalise the appearance of any property, whilst increasing its market value. We also use the latest exterior rendering techniques, and we can guarantee a high quality finish.If you own a house without a cavity in the walls, improving its thermal performance means insulating either internally or externally. External wall insulation has the following advantages:Thicker or higher performing insulation can be used resulting in warmer walls.No internal living space is lost as all the insulation is on the outside walls.No need to vacate while the work takes place, so no need to move furniture and fittings.No internal redecoration is required, particularly kitchens and bathrooms.The risk of condensation and cold-bridging is eliminated, as the whole building is wrapped in insulation.An exterior finish is developed, which can closely match the original or surrounding properties.