Why insulation for walls
Wall insulation is more of expensive in nature and may be advised only in exceptional cases. The ‘energy audit’ report need to specifically examine the walls with special equipment which determines energy loss through walls.
It is estimated that on an average, 50% of heating or cooling energy of any home escape through wall (35%). Other components like windows, floor and roof played as agents of energy escape system increasing the cost on home owner.
It is therefore, the first thing one need to do to examine which portion of wall need insulation through proper scanning of all walls with a thermal radiometer or infrared scanner in order to detect where the walls are leaking heat or cooling.
Such scanning may be done by an expert or energy auditor who finally prepares pretty colour pictures by infrared scanner.
Why insulation
If anyone having mid-Seventies timber framed bungalow with pebbledash external face, which is in need of renovation? What are the pros and cons of external wall insulation? In such case, it is advised that to apply extra insulation externally which will be less disruptive.
Sometimes, it is not always follow the normal rules but to examine the old walls made from traditional material. One had look at walls and try to prevent from breathing and sealing the damp.
Gluing the insulation material may not be proper remedy to seal heating or cooling energy. It would be proper to see the walls battened out first with a breather membrane behind the render lathe to provide a ventilated cavity.
If any home is constructed with a cavity wall, the inner side of wall may have a timber frame and the external wall in block work that has been rendered and pebble dashed.
These walls have cavity inside which need to remain clear. If walls may be applied an external insulation to the outside wall, it may not much issue except that one may not have a suitable surface upon which to apply the insulation and lathing by adhesive. It’s difficult to tell what, if any, savings on energy bills may be experienced. Claims are made of 25 to 30 per cent savings, with “U” values increasing fourfold. But one had to see for himself for such savings as advised by the expert.
Many times, old walls made of traditional materials such as timber; cob, limestone, slate and granite are not as energy inefficient as has been thought.
However, the study of the energy efficiency performance of old buildings, the first part of which is devoted to walling materials, indicates that the thermal performance of traditional walls has been underestimated.
Why insulate for walls
But if it compared U-values (which describes heat transmittance or loss through a building material) of traditional materials against that calculated by a standard software package, in some cases, the work indicates that heat loss from traditional walling materials can be three times lower than expected.
Overall, nearly 80% of the sampled walls built with traditional materials performed better than predictions. The problem with underestimating the performance of an old building is that ‘disproportionate’ energy efficiency measures could be adopted by the owners or building professionals that are unnecessary, costly, invasive and potentially harmful to the building itself.Energy efficiency is becoming the key issue for people working with historic buildings. If we aren’t basing our approaches on the right figures to begin with, then we could, unintentionally, be doing untold, invasive damage.
It appears that one is actually underselling the thermal performance of our old buildings by not fully understanding them.Nevertheless, the insulation of walls has been very important process to save energy bills as also to support the save energy resources movement globally. There are no.
of methods by which an insulation may be taken up. After detailed ‘Energy Report’ suggesting the insulation of walls, the details of its effectiveness and cost factor as mentioned in various methods may be viewed before finally taking decision of insulation of walls.
Blown insulation: The material is blown loose into the specific, sectioned-off area to the required depth. The material is normally blown cellulose fibre or mineral wool through an expert installers.
Cellulose is man-made from newspapers and fire resistant.
Why insulating for walls
Boards: If you wish to convert the space into a living area, you will need to insulate to keep it warm. One of the derivative of polystyrene (EPS) is used which is expanded into foam.
Other chemical compound also of the same group is also similar and an even better insulator.
Why the insulation should you need? These days, if one is opting for most common insulation material, mineral wool, the depth recommended is in insulation up to 270mm. Basically, the deeper the insulation is in the walls, the less heat you will lose through walls and the bigger CO2 and financial savings one will make. Installing 270mm of insulation may save around a tonne of CO2 per year.
If there was already 50mm of insulation and if topped the wall up to 270mm, the extra saving would be around 230kg of CO2 per year.
Why insulation home
Grants and offers:Before taking up insulation of walls, it is very much necessary to acquire the knowledge of range of grants and offers available from the government, local authorities and energy suppliers.
One may like to take up grants and offers from any of the energy suppliers, regardless of who supplies your gas and electricity.
All energy suppliers provide grants to install insulation for free to those aged over 70 or those in receipt of certain benefits. In addition to above, some tax rebate is allowed through the Landlords Energy Saving Allowance.
This allowance can be used on each of the properties a landlord owns; enabling landlords to claim the costs for cavity wall insulation, solid wall insulation, and floor insulation.
