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 Think of your winter garments.
They keep your body warm by retaining the body heat within.
To your home the Wall insulation brings about the same benefits.
Additionally in air conditioning wall insulation keep the
heat outside the occupied
space in the summer.
In either event the wall insulation provides a yeomen
service by conserving the vital energy supplies.
Types of Wall Insulation
There are many types of Insulation material used in building walls, such as;
- Rock Wool, Mineral Wool and Slag Wool
- Fibre Glass Insulation
- Cellulosic material (Cotton and Recycled Paper)
- Expanded Polystyrene foam & Outsulation (Rigidfoam or EPS foam)
- Poly Urethane Foam (PU)
- Poly Ethylene Foam (PE)
- Butyl/ Nitrile Rubber closed cell insulation
The last 4 named are synthetic material and are based on petroleum byproducts.
Where to use what?
Virtually any conventional insulation material can be used as wall insulation subject to the
location and the properties desired.
If retrofitting (under the warmer homes scheme for eg.) is desired the cavity wall in filling is the only
option available at low cost.
Here too only the continuous cavity holes can be injected with insulation.Desirable properties of Wall insulation
primarily the wall insulation is expected to act as a barrier for the ingress of undesirable heat.
In addition it should possess the following minimum attributes;
- Permeability to water and moisture
- Aesthetic Finish (if fitted exposed)
- Better insulation property (R value) with minimum thickness
- Environmentally friendly
- Fire Resistant
- Resistant to Rodent and other vermin attack
- Does not pose a health risk to the occupants or the installers
- Good mechanical strength
Of all the above the major factors influencing as far as energy is concerned is the R value and the permeability of water.R-value
R-value is called the Thermal Resistance of the insulation material. It is directly proportional to the mean length of the path of heat
and also inversely proportional to the area of the wall and the conductivity of the material. A higher value of R is a property of good insulation.
Moisture Permeability
Moisture permeability affects energy loss adversely because it adds latent heat to a buildings heat load.
It also weakens the insulating property of
a material and damage the profile too. Further the moisture condenses within insulation and on interior walls
resulting in mold formation and damages to the finishes.
ENTECH is a leading provider of assistance related to Energy Usage issues in Ireland.We will provide:
- Energy Consultancy for your buildings including the services of duly registered BER Assessors.
- Free information on HES, Green Homes and Warmer Homes Schemes and related grants,
BER certification and assessments, application for concessions etc
- Design Supply and installation of Heat Recovery, high efficiency HVAC equipment and controls, building energy performance improvement retrofits etc.
- All other related services
Contacting us
For information on wall insulation call us on 1890 245 345 or please complete our
Free
online enquiry form...click here
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