Hard to Treat Homes Bev Coombe Membership and Communications Manager.
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Transcript of Hard to Treat Homes Bev Coombe Membership and Communications Manager.
Hard to Treat Homes
Bev CoombeMembership 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 InternalWall
External Wall
Loft(0-270mm)
DraughtProofing
Annual Saving
Around £470
Around £500
Around £205
Around £30
Co² Savings
Around 2.4 tonnes
Around 2.5 tonnes
Around 1 tonne
Around 150 kg
Source – Energy Savings Trust
Case Study – Internal SolutionThe problemA solid wall Victorian terraced property with an uninsulated converted loft space.
The solutionSempatap 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 SolutionThe 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 Associationwww.nationalinsulationassociation.org.ukinfo@nationalinsulationassociation.org.uk
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?