External Wall Insulation & Monocouche Render
Over half the energy required for heating a building escapes through the exterior walls. With approximately 75% of domestic energy consumption devoted to heating, the ecological and economic impact of this is significant.
Insulated render is a modern approach to facades where the insulation is applied to the outside of the building structure Adding insulation to the exterior of a property is a more effective way of creating a continuous layer of insulation around the entire external wall area, without cold bridges across internal partition walls. Interstitial condensation problems, which can cause potentially damaging damp problems, especially to timbers, are also less of an issue.
Adding external insulation will also reduce the overhang of the roof (soffit) and increase the depth of the reveals at window openings, possibly necessitating alterations. Most systems have technical solutions for all of these issues, such as treatments for window surrounds, vents, avoiding bridging the dampproof course, and extending window sills.
Anti-cracks renders are an innovative reprisal of traditional rendering. These systems typically incorporate fibre reinforcement mesh which is applied into a polymer based basecoat and finished in a range of renders in over 2000 colours.
The use of external, rather than internal insulation offers a number of practical advantages:
- There is little or no disturbance to the occupants and the possible additional cost of temporary re-housing is avoided.
- The problems of insulating around or behind internal fittings eg. in kitchens and bathrooms, but also cupboards, shelves, power points etc are avoided.
- Potential cold bridges at all internal/external wall and ceiling junctions are reduced.
- In a complex building, it is easier to ensure that the whole of the external surface is insulated, thus increasing thermal efficiency.
Fixing a thermal insulation layer to the exterior of a building is an extremely efficient method of generally up-grading performance and habitability. Almost invariably internal condensation problems are alleviated, and as result of the increased thermal stability, comfort levels are improved.