A. D. Breden Ltd.   

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Established 1986          

  

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Loft Insulation

Introduction.

Cars are thought to be the main contributor to UK green house gas emissions, however this is not the case. Motor vehicles are responsible for about 25% of CO2 emissions where as property is responsible for about 40%. The diagram shown right gives an indication of how much of your homes heat is lost due to a lack of, or poor insulation. With up to 60% of our homes wasted energy due to heat loss it is extremely important to ensure our homes are correctly insulated. It is recommended that we have 270mm of mineral wool insulation in our lofts, however around 23 million homes in the UK (approximately half) only have between 0-150mm.
Insulation reduces the amount of energy required to heat our homes so it will not only reduce CO2
emissions, it will also reduce our annual energy costs by a significant amount.

 

Mineral wool explained.
Mineral wool insulation (shown above right) is unique in its properties. It combines high thermal resistance with long term stability. Its composition is of either molten glass, stone or slag which is spun in to a fibre like structure creating a combination of properties, Saves energy, minimises pollution, reduces noise and is an excellent fire retardant. These properties come from its mat of fibres construction, which prevents movement of air, and it chemical composition. Inorganic rock or slag are the main ingredients,  typically 98%, in stone wool, the remaining 2% being an adhesive and oil. Stone wool is made from volcanic rock such as basalt and dolomite (shown below right) most of which is recycled material in briquette form. Slag wool insulation is made from the waste from a blast furnace. Glass wool usually contains about 95% of inorganic material. Glass wool is made from sand or recycled glass, lime stone and soda ash, exactly the same as a window or bottle.
 
Mineral Wool and the Environment.
For each Tonne of CO2 produced in manufacturing Mineral Wool approximately 200 tonnes are saved as a result of its thermal properties (mostly in residential properties) over a 50yr period. Mineral wool uses about 50% of the energy needed to produce other types of insulation and increasing amounts of recycled materials are being used in its manufacture. Recycled Glass now contributes from 30-60% of the raw materials used in manufacturing Glass Wool products, in some factories are using as much as 80%.
 
Transporting Mineral Wool requires fewer vehicles further reducing the environmental impact the product is responsible for. This is because Mineral wool products have a high compression ratio and elasticity, typically allow product to be packaged to half there original volume.
 
The diagram below shows the typical impact levels the production of Mineral wool products have on the environment over their lifetime. The diagram is in terms of Energy use and Gas emissions. The lifetime approach easily shows the considerable environmental benefits of Mineral wool.

Savings.
The amount you can save by correctly insulating our homes varies from property to property. Property type and fuel used are two of the main factors to take in to account. Listed below are three types of property and the possible savings which can be achieved. All these examples are based on properties with gas being used as the main heating fuel.
 
3 bedroom end of terrace house.
      Product installed                                                                                                        possible annual saving
Cavity wall insulation                                                                                                                               104
Loft insulation 136
Water tank jacket 15
Heating controls 78
3 bedroom detached house.
     Product installed          possible annual saving
Cavity wall insulation                                                                                                                               178
Loft insulation 176
Water tank jacket 15
Heating controls 112
3 bedroom semi detached bungalow.
        Product installed                                                                                                      possible annual saving
Cavity wall insulation                                                                                                                                 72
Loft insulation 219
Water tank jacket 15
Heating controls 67
*please note these are estimate savings only*
 
Costs
The cost of installing insulation within a property varies greatly, depending on a number of factors. Size of the property, type if insulation required and existing insulation (i.e. loft insulation may only require topping up). For example, to supply and install 50msq of 150mm thick Rock Wool insulation ( this should on average give two layers , 270mm+ which is required to cover Part L of the building regulations) within a loft  would cost approximately 500.00 + VAT and take 6-9hrs to install. To help with the costs, a number of groups offer Grants ,in some cases up to 100%, for installing insulation. Conditions do apply, i.e. 270mm or more of a mineral wool insulation to be installed in a loft space.
 

                                       

                                Contact Information           

                                                        Telephone                      01483 811452
 
                                                         FAX                                   01483 813663
 
                                                        Postal address              Unit 12 The Elms, Glaziers Lane, Normandy, Guildford, GU3 2DF
 
                                                        Electronic mail               General Information: Sales Inquiries: adbreden@btconnect.com