201 lines
5.6 KiB
Plaintext
Executable File
201 lines
5.6 KiB
Plaintext
Executable File
property
|
|
propertyadvice
|
|
propertyclinic
|
|
7965675
|
|
-----
|
|
# Changes to the building regulations dealing with energy efficiency
|
|
|
|
## Continuing the series in which our Clinic experts provide a guide to those
|
|
thorny issues that can trip up the unwary. This week, David Snell on changes
|
|
to the building regulations dealing with energy efficiency .
|
|
|
|
![Building regulations and energy efficiency: The new elemental U values
|
|
applies to flat roofs, external walls, glazing and roof lights][1]
|
|
|
|
The new elemental U values applies to flat roofs, external walls, glazing and
|
|
roof lights Photo: GINA TURNER
|
|
|
|
By David Snell 2:00PM BST 26 Aug 2010
|
|
|
|
[Comments][2]
|
|
|
|
**What is the point of the changes?**
|
|
|
|
* To upgrade the 2006 **[energy efficiency][3]** requirements by 25 per
|
|
cent. If you are building a new home, extending, renovating or converting,
|
|
this applies from October 1.
|
|
|
|
**How does it affect extensions?**
|
|
|
|
* The new elemental U values are 25 per cent better than the 2006 figures. A
|
|
U value is the measurement of the heat flow through a square metre of any
|
|
element of a building - flat roof, external walls, glazing and roof lights -
|
|
for every 33.8F (1C) temperature difference between inside and outside.
|
|
|
|
But achieving these values is not sufficient to demonstrate the 25 per cent
|
|
betterment. Other measures, such as installing solar or photovoltaic panels or
|
|
a SAP (Standard Assessment Procedure) calculation for the whole building may
|
|
be necessary. In general, the area of external windows and doors should not be
|
|
greater than 25 per cent of the floor area.
|
|
|
|
## Related Articles
|
|
|
|
* [Help, no one will insure my home][4]
|
|
|
|
13 Aug 2010
|
|
|
|
* [Buying a home for a relative][5]
|
|
|
|
11 Aug 2010
|
|
|
|
* [Cavity-wall insulation][6]
|
|
|
|
10 Aug 2010
|
|
|
|
* [Self-build: should I hire a project manager?][7]
|
|
|
|
08 Jul 2010
|
|
|
|
* [Need to know: cowboy builders][8]
|
|
|
|
06 Aug 2010
|
|
|
|
* [Need to know: commonhold][9]
|
|
|
|
01 Jul 2010
|
|
|
|
When it comes to a conservatory, there must be effective thermal separation
|
|
between it and the main house, otherwise it must comply with the same thermal
|
|
requirements as a normal extension. The heating must be independent of the
|
|
main house, with separate controls, and the glazing must conform to the same
|
|
rules and standards as external windows.
|
|
|
|
**What about renovations?**
|
|
|
|
* There is a target table for U values when renovating thermal elements, and
|
|
where existing elements fall below a threshold U value they must be upgraded
|
|
to meet another set of figures. There are get-outs: if implementation of the
|
|
works is uneconomical with less than a 15-year payback. If it would reduce the
|
|
floor area by more than five per cent. If the building is listed, of historic
|
|
or architectural value and in certain sensitive situations.
|
|
|
|
**Can you explain the standards for new homes?**
|
|
|
|
* A system of calculations measures the carbon emissions for a series of
|
|
model dwellings. These are known as the Target Emission Rates (TER). Up to now
|
|
it has been sufficient to demonstrate that the actual carbon emission rates,
|
|
or Dwelling Emission Rates (DER), equal or better the TER.
|
|
|
|
From October 1 the DER must be 25 per cent better than the TER, and 44 per
|
|
cent better in 2013. The calculations can only be carried out by a competent
|
|
person with the correct software and must be converted to an SAP value from 1
|
|
to 100.
|
|
|
|
**Is there an official piece of paper?**
|
|
|
|
* Of course. On completion of a new building, extension, conversion or
|
|
renovation, you will need an **[Energy Performance Certificate][10]** (EPC).
|
|
For full details, talk to your local building control department.
|
|
|
|
* Send your property problems to: **[Property Clinic][11]**, The Daily
|
|
Telegraph, 111 Buckingham Palace Road, London SW1W 0DT; email
|
|
[propertyclinic@telegraph.co.uk][12]
|
|
|
|
* Our experts regret that they cannot answer readers' letters personally.
|
|
All correspondence should be sent to them at the address given above. We
|
|
regret that we cannot acknowledge letters. Please keep them brief.
|
|
|
|
[X][13] Share & bookmark
|
|
|
|
Delicious Facebook Google Messenger Reddit Twitter
|
|
|
|
Digg Fark LinkedIn Google Buzz StumbleUpon Y! Buzz
|
|
|
|
[What are these?][14]
|
|
|
|
* Share: [Share][13] [ ][15] [ ][16]
|
|
|
|
[Tweet][17]
|
|
|
|
http://www.telegraph.co.uk/property/propertyadvice/propertyclinic/7965675
|
|
/Changes-to-the-building-regulations-dealing-with-energy-efficiency.html
|
|
|
|
Telegraph
|
|
|
|
## [Property Clinic][11]
|
|
|
|
* ### [Lifestyle »][18]
|
|
|
|
* ### [Property »][19]
|
|
|
|
* ### [Property Advice »][20]
|
|
|
|
In property
|
|
|
|
[![Twenty-four-hour party people: noisyneighbours can turn even the loveliest
|
|
of houses into a waking nightmare][21] ][22]
|
|
|
|
### [Property clinic: Noisy neighbours][22]
|
|
|
|
[![House Doctor DIY: whether you are papering walls or ceilings, it pays to
|
|
have a helper at hand, says David Snell][23] ][24]
|
|
|
|
### [Doctor in the House: wallpaper worries][24]
|
|
|
|
[![I spy: neighbours are not responsible for subcontractors
|
|
|
|
][25] ][26]
|
|
|
|
### [Property clinic: How responsible are our neighbours?][26]
|
|
|
|
[![Building regulations and energy efficiency: The new elemental U values
|
|
applies to flat roofs, external walls, glazing and roof lights][27] ][28]
|
|
|
|
### [Building regulations and energy efficiency][28]
|
|
|
|
[X][13] Share & bookmark
|
|
|
|
Delicious Facebook Google Messenger Reddit Twitter
|
|
|
|
Digg Fark LinkedIn Google Buzz StumbleUpon Y! Buzz
|
|
|
|
[What are these?][14]
|
|
|
|
Share:
|
|
|
|
* [ ][13]
|
|
|
|
* [ ][15]
|
|
|
|
* [ ][16]
|
|
|
|
* [Tweet][17]
|
|
|
|
* Advertisement
|
|
|
|
![][29]
|
|
|
|
telegraphuk
|
|
|
|
Please enable JavaScript to view the [comments powered by Disqus.][30] [blog
|
|
comments powered by Disqus][31]
|
|
|
|
Advertisement
|
|
|
|
sponsored features
|
|
|
|
Loading
|
|
|
|
Classified Advertising
|
|
|
|
* [UK Homes][32]
|
|
|
|
* [Overseas][33]
|
|
|
|
* [RHS Chelsea][34]
|
|
|
|
Loading
|
|
|
|
var puffs_8314099 = new Array();
|
|
|