Understanding Wall Insulation Systems
In recent years there has been a huge increase
in social and political pressure to minimise unnecessary energy consumption.
Diminishing fossil fuels and rapidly increasing energy bills are a cause
for concern around the world. Heating and cooling buildings is a considerable
cost for both domestic and commercial property owners.
Significant, ongoing savings can be made if the entire building is insulated
properly. External wall insulation (EWI) systems help reduce energy
consumption and
energy costs.
Heat transfer through a wall is known as thermal transmittance and measured
using U-values.
The materials used, number of
windows and doors, just about everything involved in the construction
of a building, has a direct impact upon heat loss and heat gain. Wherever a building element crosses through an externally-facing
wall (e.g. floor and ceiling joints; door and window frames) heat can
escape through the element. This is especially a problem in concrete
and steel framed buildings. Where the temperature of the surface falls
below the condensation point of the surrounding air, this can lead to
condensation and mould growth inside the building, which is harmful
to the health of the building’s occupants. Any part of an exterior-facing surface with a significantly
lower thermal resistance than the surrounding area. This can lead to
a blotchy appearance on a facade, particularly early in the morning. A calculation to determine how much thermal energy in
Watts (W) is transported through a building material with the size of
1m² at a temperature difference of 1 Kelvin. The unit of measurement
for U-values is W/(m²K). Achieving low U-values reduces the energy used
to heat a building, which reduces energy bills and contributes towards
saving energy. U-Values are measured in accordance with BS EN ISO 6946:1997. In the UK and Ireland, ongoing efforts to limit the
use of natural fuel resources have been implemented through the UK Building
Regulations. As part of the assessment, the Regulations specify maximum
U-Values for new buildings. These values are different across the United
Kingdom and Ireland, and are currently: Part L (England, Wales, N. Ireland) – 0.35W/m²K Download
the Part L1A Guide 2010 External Wall Insulations can explain to you in simple terms what it
needs to be done to get your home warm and energy efficient. We are
just a call away.
The UK Building Regulations provide maximum U-values across the UK and
Eire.
There are 3 typical approaches to insulating walls: internal, cavity
and external wall insulation.
We believe that the best possible building performance can
only be realised if walls are externally insulated.
Internal Wall Insulation
Cavity Wall Insulation
External Wall Insulation
Key Insulation Terms
Cold Bridge
Cold Spot
U-Values
Building regulations
Part J (Scotland) – 0.3-0.27W/m²K
Part L (Eire) – 0.27W/m²K
Download
the Part L1B Guide 2010
Contact Us
External Wall Insulations
Address: 2nd Floor, Old Bank Chambers, 39 Station Road, Horley, Surrey, RH6 9HW
Tel: 01293 820350
Email: info@external-wall-insulations.co.uk
We would be happy to help and advise you on the type of external
wall insulation that best meets your needs.
Our site surveys and advice are completely free of charge.
We cover all areas of Sussex: Bognor Regis, Horsham, Billingshurst, Brighton, Hove, Littlehampton, Arundel, Worthing, Henfield, Shoreham-by-Sea, East Preston, Hove, Fareham, Pulborough, Lancing, Epsom, Burgess Hill, Banstead, Rudtington, Crawley, Pound Hill, Woking,