Transcript Document

Hard to Treat Homes
Bev Coombe
Membership and Communications Manager
Agenda
• Introduction
• Solutions
• Case Study - Sempatap
• Summary
• Questions
Introduction - What is a Hard to
Treat Home?
These types of property often fall into one or more of the
following categories:
• Solid wall construction
• No loft space
• Off the mains gas network
• Non traditional construction
• Non standard cavity
Introduction – The facts about
Hard to Treat Homes
• HTT properties tend to be more difficult and expensive to
improve in terms of providing adequate insulation and
heating.
• Over 50% of fuel poor households live in HTT homes
• There are around 9.2 million dwellings that can be
considered HTT (43% of the housing stock)
• 6.6 million properties have solid walls (31% of the total
housing stock)
• Of the 326,000 high rise flats in England 48% have solid
walls.
Introduction – The facts about
Hard to Treat Homes
• HTT homes account for 43% of stock but actually emits
over half the CO2 from all homes.
• Over half of the HTT stock is in the private sector.
• 65% of PRS is HTT
Introduction - What is a solid
wall?
• 9” masonry walls and other non-traditional construction
types such as single leaf masonry, >9” walls (e.g. thick
stone walls)
• concrete walls, metal or timber panels and some mixed
wall types (e.g. Where the ground and first floors are
constructed of different materials)
• BRE estimate that around 7% of unfilled cavity wall stock
cannot receive CWI.
• High rise flats (at least 6 storeys high) – esp. 1953-1972
Breakdown of SWI - Tenure
Tenure
No. of HTT
dwellings
(000’s)
% of tenure
that has
solid walls
% of total
solid wall
Owner
Occupied
4,549
30
69
Private
rented
1,151
51
17
Local
authority
562
23
9
RSL
337
21
5
Total
6,599
31
100
Breakdown of SWI – Dwelling
type
Dwelling
type
No. of HTT
dwellings
(000’s)
% of
dwelling
type that
has SW
% of total
solid wall
End Terrace
723
35
11
Mid Terrace
2,187
50
33
Semi
Detached
1,562
24
24
Detached
838
18
13
Converted
Flat
590
83
9
Flat – low
rise
544
20
8
Flat – high
rise
155
48
2
Total
6,599
31
100
Breakdown of SWI – Region
Gov Office
Region
No of HTT
dwellings
(000’s)
% of GOR
that has SW
% of total
solid wall
South West
587
26
9
East England
639
27
10
South East
740
21
11
Total
1,966
What are the solutions?
Internal Wall Solutions
Typically consists of either dry lining in the form of flexible
thermal linings available in 1 metre by 12.5 metre rolls,
laminated insulating plasterboard (known as thermal board),
or built-up systems using fibrous insulation such as mineral
wool held in place using a studwork frame.
What are the solutions?
External Wall Solutions
Comprise of an insulation layer fixed to the existing wall,
such as a protective render or decorative cladding. Dry
cladding offers a wide range of finish materials that can be
used – timber panels, stone or clay tiles, brick slips or
aluminium panels.
What are the solutions?
Other Solutions
A majority of HTT properties will benefit from the provision of
draught proofing.
Some HTT homes have a standard loft space that can be
insulated.
Loft spaces with restricted access/headroom can often be
insulated using blown cellulose which is made from recycled
newspaper.
Properties with a cellar/basement can have the underside of
the floorboards insulated.
Cost and Carbon Savings
Measure
Internal
Wall
External
Wall
Loft
Draught
(0-270mm) Proofing
Annual
Saving
Around
£470
Around
£500
Around
£205
Around
£30
Co²
Savings
Around
Around
2.4 tonnes 2.5 tonnes
Around
1 tonne
Around
150 kg
Source – Energy Savings Trust
Case Study – Internal Solution
The problem
A solid wall Victorian terraced property with an
uninsulated converted loft space.
The solution
Sempatap is thermal insulation on roll which is
applied like wallpaper and at only 10mm thick does
not cause significant disruption during installation.
This product can be applied to ceilings as well as
walls and provides a solution for properties without a
loft space as well as those with solid walls. It can
also be applied to the underside of floorboards in a
cellar/basement.
Case Study – Internal Solution
The product is applied using a special adhesive using
a roller or brush and can be easily cut to size using
wallpaper shears or scissors.
Once the product has been applied it can be painted,
papered or even tiled.
The manufacturer of this product expect it to have a
life expectancy of 30 years.
Due to the flexibility of the product it can be used on
uneven walls and irregular surfaces and can be used
on sloping walls and ceilings in converted loft spaces.
The product is only applied to the exterior facing
interior walls of the property.
Case Study – Internal Solution
Summary- key points
There are around 9.2 million HTT homes
6.6 million properties have solid walls
There are solutions for HTT homes
• Internal/external insulation
• Loft insulation
• Draught proofing
Solid wall insulation can save up to £500 a year and
around 2.5 tonnes of carbon.
Draught proofing can save up to £30 a year and
around 150kg of carbon.
Loft insulation can save up to £205 a year and around
1 tonne of carbon.
Summary- key contacts
National Insulation Association
www.nationalinsulationassociation.org.uk
[email protected]
One-stop shop representing both internal and external solid
wall manufacturers and installers.
Facilitates the Solid Wall Action Group for our members and
key stakeholders.
Working with the industry to promote solutions for hard to
treat homes and offer advice to the general public.
Details of products available from our solid wall manufacturer
members are available today and include technical
specifications.
Any Questions?