Appendix I
(Typical Manufacturers Data for Retrofit/ Energy Efficiency Projects)Protection cap The vacuum creation process in Pilkington Spacia™ results in a hole in one of the panes, located 50mm from the glass edge.
This hole is covered by a small permanent cap (12mm diameter), which must remain on the glass surface and should be glazed towards the inside of the building. This can be positioned in any corner of the pane.
Microspacer grid With an individual diameter of only 0.5mm, this grid ensures that the two glass panes are kept a fixed distance apart.
How it works Pilkington energiKare™ Legacy utilises advanced Pilkington Spacia™ technology.
This consists of an outer pane of low-emissivity glass and an inner pane of clear float, with a vacuum rather than air or gas in between. The result is excellent thermal performance from a unit only fractionally as thick as a standard IGU.
Pilkington energiKare.™ The family that’s at home anywhere.
Pilkington energiKare™ Legacy The expanded family of Pilkington energiKare™ products lets you get all your glass energy saving requirements from one source. From new homes to older traditional buildings, you can now provide better energy ratings in a wide range of properties.
Pilkington energiKare™ Legacy provides similar energy efficiency performance as a standard unit, but in a much thinner profile, so it can be used in slim frames – perfect to maintain a property’s original appearance.
The importance of energy efficient glazing Advances in technology have made windows a significant contributor to the energy efficiency of new homes. To help preserve the character of our nation’s buildings, restrictions on use can prevent certain properties from moving away from energy inefficient single glazing. So whilst these properties look great, they carry a heavy price in terms of heating costs and carbon footprint. Pilkington energiKare™ Legacy provides a hitherto unknown level of window energy efficiency for older properties.
Pilkington energiKare™ Legacy Conventional Double Glazing
Note: Microspacers only visible on close inspection.
A new level of performance for older buildings.
Pilkington energiKare™ Legacy utilises advanced Pilkington Spacia™ technology to provide the world’s first commercially-available vacuum glazing. It provides a similar level of energy efficiency as modern double glazing, but in a unit that is typically only a quarter of the thickness. This brings a new level of thermal performance to older buildings, and opportunities for slim glazing in new buildings.
l The thermal performance of modern double glazing in the same thickness as single glass, offering the opportunity to improve energy efficiency in older traditional buildings.
l A cost effective method of improving the energy efficiency of older homes where glazing choice is restricted or where the original frames are a desirable feature.
l Pilkington provide an extended warranty to your installer. Ask your installer for maintenance guidelines.
l Four times better thermal insulation than single glazing, meaning lower heating bills.
l Suitable as a replacement for single-glazing in original frames, to retain the appearance of older traditional buildings and meet the requirements of conservation areas.
l Suitable for other applications where use of thinner, low weight glazing is desirable, such as sliding box sashes.
l Greater comfort, as cold spots close to the window are reduced.
l Offers good acoustic performance for lower interior noise levels.
l A range of non-rectangular shapes, for flexibility with original frames.
l Proven solution; successfully used in Japan for over a decade.
l Offers reduced levels of internal condensation compared to single glazing.
Max size: 2,400mm x 1,350mm Min size: 350mm x 200mm.
The above table is determined in accordance with EN410 and EN673.
Product
Pilkington energiKare™ Legacy
Image courtesy of Lumen Rooflight.
INNOVATION BUILT ON EXPERIENCE 02
Aerogel is a low density solid derived from a gel in which the liquid component has been replaced by air using a process known as supercritical drying. This results in a material with remarkable insulation properties.
By combining the superinsulation performance of aerogel with the flexibility and robustness of a non woven polyester carrier, Aspen Aerogel have developed a unique high technology manufacturing process. For the first time this allows the performance of Aerogel to be utilised in a wide range of practical applications. Historically, use has been limited to industrial and petrochemical. However in partnership with A. Proctor Group Ltd, the high performance of this material will be offered as a unique solution in building and construction applications.
When compared to traditional thermal laminates Spacetherm Panels provide consistently superior thermal performance.
THE HIGHEST LEVEL OF
THERMAL INSULATION POSSIBLE
The chart above shows the comparative thickness of various insulants relative to mineral fibre.
U Value - Performance Ready Reckoner - Spacetherm®
Brick Wall (with cavity)
Construction Base used on above calcs – Substituting Spacetherm thickness as appropriate.
Spacetherm® - 9mm 18mm 27mm 36mm
Timber Frame (89mm Stud) 0.43 0.33 0.27 0.23 0.19
Solid Brick 2.05 0.86 0.55 0.40 0.32
Brick Wall - Cavity 1.44 0.73 0.55 0.37 0.30
Brick Wall - Insulated 0.58 0.42 0.33 0.27 0.23
Insulation thickness excluding 10mm Fermacell
Brick Wall (with Insulation) 89mm Timber Stud -15% Bridging Spacetherm® direct Solartwin installation in mainland UK usually costs only £3499, inclusive of VAT at the reduced 5% “fuel” rate, if surveyed by phone.
A standard installation takes no more than a day, is on a pitched roof on a one storey house with a loft hatch giving access to the void behind where the panel will be fixed, with roof access requiring only ladders or tower scaffolding, where an appropriate low pressure vented hot water system is in place and where we can use existing hot cylinder(s), which should be large enough, usually over 110 litres, and in good condition, when we eco-survey your home.
Self-installing?
Call for prices and information. We also make specials for pools, boats, caravans. Or unglazed, odd shaped and “vertical”
panels.
We don’t hard sell, nor operate “show houses”. But if you’d like to contact an existing Solartwin user we can usually put you in touch. Please call!
Working Solartwins are on view at Heeley City Farm, Richards Road, Sheffield, England; The Mill on the Fleet, Gatehouse of Fleet, Scotland; The Hydroponicum, Achiltibuie, Scotland. We give free educational material to teachers, lecturers and trainers. Please ask! We can also lend you demonstration panels and offer expert speakers for conferences and events.
To check your home is suitable, and whether we can install at the standard price, take one of our surveys, with a fixed price installation quote including VAT.
Short phone eco-survey
This is your simplest, quickest, and best value option.
99% of homes are fine for our unique, quick eco-survey - just a few easy questions. During your call we may even take a quick look at your roof, using an aerial photograph, if one is available. You normally get a fixed price quotation immediately, reconfirmed in writing / by email. No-one visits or disturbs your privacy. We can normally offer a Solartwin user contact too. Call 01244 403407
Occasionally, for complex roofs / plumbing please post / email (jpeg or gif files to [email protected]) at least 6 pix:
1. Long distance outside shots of suitable roof(s), including the ground needed to place scaffolding or ladders on.
2. Your hot water cylinder, usually in the airing cupboard, ideally showing the pipes around it.
3. Your cold water tank (usually in the attic), showing the pipes going in and out of it.
4. A wide shot in the loft of underneath where the panel might fit so we can see the rafters.
5. A shot of the loft hatch and ladder, if any. If not, a shot of where a new hatch needs to be.
6. Any other photographs you think may be relevant, such as alternative positions for the panel.
Please use a flash for inside shots and label each picture with your name, address & phone number. Architects’ plans, sketches or drawings are helpful too. We will phone you and give you a decision on suitability. Plus a fixed price written quotation - and a local Solartwin user contact if you wish.
Traditional paid survey visit
If an eco-survey is really not practical (and it nearly always is) please ask Solartwin to come and survey your home. If you request this, there will normally be a charge.
Solartwin
a BEST BUY, brings the cost of the sun down to earthPlease call now on 01244 403 407
© Solar Twin Ltd 50 Watergate St Chester CH1 2LA UK email: [email protected] web: www.solartwin.com cylinder containing a heat exchanger for the antifreeze circuit
the base may not reach 60C for months in winter
differential temperature solar controller unit (SC) with 2 or 3 sensor (S) cables and 2 power (P) cables requiring fused spur (FS) to mains electricity antifreeze circulates to the heat exchanger and back
SC FS
Traditional solar water heating
one of several design options, with separate antifreeze circuit, expansion vessel, additional pre-heat cylinder, heat exchanger, solar controller and mains pump.
P
panel has an integral low voltage photovoltaic panel
The Solartwin system
plumbed "direct" showing its low-impact installation
Variable
U-values indicate the rate of heat flow across a material – the lower the value the better the insulator.
Single glazed windows are poor insulators and heat loss is exacerbated if the window doesn’t have effective seals.
Regulations
Approved Document L of the Building Regulations sets insulation standards for materials used in new buildings and those undergoing significant alteration.
Windows must achieve an area weighted average U-value of 2.2 but this can rise to a maximum of 3.3 if other elements of the building offer higher than average insulation.
Replacement windows to existing dwellings are required to achieve a U-value of 2.0 and to buildings other than dwellings, 2.2 Historic buildings need only improve their energy efficiency where it is practically possible and also where it will not prejudice the character of the building. English Heritage guidelines advocate the use of secondary glazing.
Calculated U-values
Selectaglaze has worked with the Centre for Window Cladding and Technology (CWCT) to calculate U-values for their full range of secondary windows in combination with existing single glazed windows constructed from different materials and at various air spacings (cavities). For comparison purposes the calculations are based on the British Fenestration Rating Council’s standard window size, 1230mm wide and 1480mm high.
Results
- Secondary glazing with standard glass in combination with a primary window can reduce heat loss by around 50%.
- Secondary glazing with low emissivity glass exceeds the performance required by Part L of the Building Regulations.
- Secondary glazing with sealed glass units offers significant insulation levels.
- The effect of glass thickness is negligible whilst larger air spacing will marginally reduce the insulation level.
Note 1 - Limiting value for new build dwelling and non-dwelling when other building elements offer higher insulation.
Total energy loss from building to be within regulation Note 2 - Area weighted average for new-build dwelling and non-dwelling and standard for replacement window in non-dwelling.
Note 3 - Standard for replacement window in dwelling
For further information, please do not hesitate to contact:
Selectaglaze Ltd., Campfield Road, St. Albans, Herts AL1 5HT Tel: 01727 837271 Fax: 01727 844053 e-mail: [email protected] Or visit our website at www.selectaglaze.co.uk
Printed on full recyclable, bio-degradable paper from sustainable forestry.
‘fiT-and-forgeT’ insTallaTion
The Heritage Solar Slate embodies the usual benefits of solar, but overcomes some of the obstacles met by traditional installations.
The installation is a ‘fit-and-forget’ process, requiring no specific training and no additional ‘niche’ trades on site.
The materials are supplied as a simple kit, producing between 600 Watts and 4 Kilowatts per pack.
Developed to be installed in the same way as conventional roofing slates, secured with roofing hooks, the roof should be built as normal, to batten level, with a gauge of 205mm.
• AC and DC isolators
• Marshalling boxes (for looms to fit into)
WATTBOX – A FULLY AUTOMATIC, ENERGY SAVING, HEATING CONTROLLER The Wattbox is a unique and revolutionary type of heating controller, which has widespread application in residential and small commercial premises. It is designed to contribute to the success of energy efficient building refurbishments and new build through the following features:
Extreme ease of use.
Heating time and temperature settings are optimised
Combinations of different energy sources are exploited for maximum efficiency, for example when hot water may be heated either by a solar thermal panel, or an immersion heater, or a condensing boiler.
Capable of controlling new technologies with specific operating requirements such as heat pumps and micro combined heat and power units.
Minimisation of efficiency losses from the “take-back” or “rebound” effect.
The Operating Principle
A simple application of Wattbox is to directly replace a traditional time clock and thermostat in existing domestic building stock. The system controls both central and water heating, reducing energy consumption by automatically monitoring and learning occupant behaviour patterns and temperature preferences.
The strength of Wattbox over competing technologies in this application is its patented ability to monitor the occupant’s behaviour and continuously modify timing and temperature of heating to optimise comfort and economy.
It monitors and learns building occupancy patterns by monitoring electricity consumption
It monitors and learns the consumption of hot water by monitoring consumption
It learns occupants heating preferences when they select 'more heat' and 'less heat' buttons
It builds a pattern of behaviour and preferences for the occupants within that specific building and uses this to automatically adjust heat and water timing and temperature to suit the occupants whilst minimising energy consumption.
Heating comfort and energy consumption are enhanced by a number of optimisation routines such as adapting internal room temperature to changing external temperatures and time of day.
Wattbox is much easier to operate than conventional time clocks and thermostat. Users who have difficulty programming traditional time clocks will find Wattbox very easy to live with.
A colour-coded indication of electricity consumption is provided to encourage efficiency.
Wattbox functionality can operate along with smart meters and other automation products as part of a “smart home” solution.
The User Interface
Wattbox determines automatically the times when heating needs to be provided, and the room and water temperature set points which are comfortable and efficient for most circumstances. If a user is not content with the heating levels it also provides a very simple and intuitive interface for the user to express their needs in the form of three buttons labelled “More Heat”, “Less Heat”, and “More Hot Water”.
Current Prototype User Interface Envisaged Production Interface
Solar Hot Water Panels
Internal wall insulation Vacuum glazing to existing single glazed window frames
PV Slates Intuitive Smart
Metering Improvement due to
secondary glazing
Appendix J
(Cost Estimates - 54 Eaton Place)Address: 54 Eaton Place
04.01.2010 Quantity Rate
NOTE: All the above costs are exclusive of Fees and VAT Insulated dry lining to external walls
Insulated dry lining to soffit of exposed ceiling
TOTAL APPROXIMATE COST OF WORKS TO BASEMENT FLAT EATON PLACE Replace light fittings with CFL's & LED's including
builder's work
Install A** rated white goods (WM, FF, DW) Replace existing windows and rooflights including triple glazed units
Install gas fired central heating system Insulate existing ground floor slab
Address: 54 Eaton Place
04.01.2010 Quantity Rate
NOTE: All the above costs are exclusive of Fees and VAT TOTAL APPROXIMATE COST OF WORKS TO FLAT 1 EATON PLACE
Replace light fittings with LED's including builder's work Install A** rated white goods (WM, FF, DW) Install MVHR (Mechanical ventilation with heat recovery)
Replace existing central heating boiler with condensing combination boiler
Draught strip existing sash windows Retain windows and install secondary glazing in lieu of replace windows
Address: 54 Eaton Place
04.01.2010 Quantity Rate
NOTE: All the above costs are exclusive of Fees and VAT TOTAL APPROXIMATE COST OF WORKS TO FLAT 3 EATON PLACE
Replace light fittings with LED's including builder's work Install A** rated white goods (WM, FF, DW) Install MVHR (Mechanical ventilation with heat recovery)
Draught strip existing windows
Retain windows and install secondary glazing in lieu of replace windows
Insulated dry lining to external walls
Address: Woodstock House Marylebone High Street
04.01.2010 Quantity Rate
NOTE: All the above costs are exclusive of Fees and VAT Replace existing rear elevation windows including triple glazed units
TOTAL APPROXIMATE COST OF WORKS TO FLAT 4 WOODSTOCK HOUSE Replace light fittings with LED's including builder's work
Install A** rated white goods (WM, FF, DW) FRONT elevation windows Draught strip existing windows
Retain windows and install secondary glazing in lieu of replace windows
REAR elevation windows
Address: 54 Eaton Place
04.01.2010 Quantity Rate
NOTE: All the above costs are exclusive of Fees and VAT De-comission existing gas boiler and make good Draught strip existing windows
Retain windows and install secondary glazing in lieu of replace windows
TOTAL APPROXIMATE COST OF WORKS TO COMMON PARTS OF EATON PLACE
Block C
Appendix J
(Cost Estimates - 26/30 South Audley Street)Address: 26/30 South Audley Street
04.01.2010 Quantity Rate
£ £
Flat 2 First Floor
24 100 2,400
1 1,500 1,500
1 6,000 6,000
1 1,800 1,800
1 2,680 2,680
14,380 14,380
£ 14,380
NOTE: All the above costs are exclusive of Fees and VAT Replace light fittings with LED's including builder's work Install A** rated white goods (WM, FF, DW) Install gas fired central heating system Draught strip existing sash windows
Retain windows and install secondary glazing in lieu of replace windows
TOTAL APPROXIMATE COST OF WORKS TO FLAT 2 26/30 SOUTH AUDLEY
Address: 26/30 South Audley Street
04.01.2010 Quantity Rate
£ £
Flat 5 Top Floor
35 100 3,500
1 1,500 1,500
1 1,000 1,000
1 1,875 1,875
1 2,000 2,000
1 8,200 8,200
18,075 18,075
£ 18,075
NOTE: All the above costs are exclusive of Fees and VAT TOTAL APPROXIMATE COST OF WORKS TO FLAT 5 26/30 SOUTH AUDLEY
Replace light fittings with LED's including builder's work Install A** rated white goods (WM, FF, DW) Draught strip existing sash windows Retain windows and install secondary glazing in lieu of replace windows
Insulate flat roof (Area unknown)
Insulated dry lining to external walls of the mansard roof
Address: 26/30 South Audley Street
04.01.2010 Quantity Rate
£ £
Common Parts
1 1,500 1,500
1 1,200 1,200
1 6,250 6,250
8,950 8,950
£ 8,950
NOTE: All the above costs are exclusive of Fees and VAT Upgrade loft insulation
Draught strip existing sash windows
Retain windows and install secondary glazing in lieu of replace windows
TOTAL APPROXIMATE COST OF WORKS TO COMMON PARTS OF SOUTH AUDLEY STREET
Block F
Appendix J
(Cost Estimates - 14 Abbey Gardens)Address: 14 Abbey Gardens
04.01.2010 Quantity Rate
£ £
Common Parts
1 300 300
1 500 500
1 4,500 4,500
5,300 5,300
£ 5,300
NOTE: All the above costs are exclusive of Fees and VAT Increase thickness of roof space insulation
Insulate flat roofs (Area unknown)
Provision of solar thermal panel and associated works
TOTAL APPROXIMATE COST OF WORKS TO COMMON PARTS OF ABBEY
Potential Annual Saving Address: 14 Abbey Gardens
04.01.2010 Quantity Rate
£ £
Flat 3 First Floor
10 100 1,000 20
1 1,500 1,500 87
1 2,250 2,250 75
1 600 600 15
5,350 5,350 197
£ 5,350
NOTE: All the above costs are exclusive of Fees and VAT Replace light fittings with LED's including builder's work Install A** rated white goods (WM, FF, DW) Retain windows at FRONT and install secondary glazing in lieu of replace windows
Draught strip and overhaul of existing windows at FRONT
Block E
Appendix J
(Cost Estimates - Shrewsbury Mews)Address: 2 Shrewsbury Mews
04.01.2010 Quantity Rate
NOTE: All the above costs are exclusive of Fees and VAT Draught strip existing windows
Retain windows and install secondary glazing in lieu of replace windows
TOTAL APPROXIMATE COST OF WORKS TO COMMON PARTS OF SHREWSBURY MEWS
Address: 2 Shrewsbury Mews
04.01.2010 Quantity Rate
NOTE: All the above costs are exclusive of Fees and VAT Replace light fittings with LED's including builder's work Install A** rated white goods (WM, FF, DW) Draught strip existing windows
Retain windows and install secondary glazing in lieu of replace windows
TOTAL APPROXIMATE COST OF WORKS TO FLAT B SHREWSBURY MEWS
Address: 2 Shrewsbury Mews
04.01.2010 Quantity Rate
NOTE: All the above costs are exclusive of Fees and VAT Replace light fittings with LED's including builder's work Install A** rated white goods (WM, FF, DW) Draught strip existing windows
NOTE: All the above costs are exclusive of Fees and VAT Replace light fittings with LED's including builder's work Install A** rated white goods (WM, FF, DW) Draught strip existing windows