Warmer Homes Scheme - TGD L Major Renovation Requirements
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Warner Homes is running an online event to provide a refresher to contractor QA on where Major Renovation applies and how it is measured in the context of TGD Part L. We will address key insights around quality, and will examine in detail what is the source of high numbers of fails in a selected measure. In this session, we are reviewing common fails for external wall insulation.
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Warmer Homes Scheme - TGD L Major Renovation Requirements
- 1. This event is being recorded WebEx Housekeeping 1 Attendees are muted with cameras off Questions submitted by clicking Q&A bubble Questions will be answered at end of event An FAQ will be created from all questions submitted and shared A recording and slides will be distributed after the event
- 2. Ruaidhrí Ua Fearghail BEWH Contractor Workshop November 2021
- 3. BEWH contractor Workshop November 2021 Application of TGD L “Major Renovation” on the Warmer Homes Scheme
- 4. Introduction The publication of the building regulations TGD L 2019 introduced the concept of a Major Renovation (MR). Important Note: This relates specifically to WHS and W&W and so any guidance and advice should be taken with that understanding – this is not general Part L implementation/compliance advice and it is not necessarily relevant in relation to other programmes you may work on. Neither is it intended to be a comprehensive note to explain the building regulations – in your field, you need to be able to understand those fully yourself. 4
- 5. Why does a Contractor need to know about Major Renovations • Older surveys • Variations from the original WO • Survey Inaccuracy 5
- 6. What could happen if a house is incorrectly classified? • Not in compliance with the Building Regulations • New Heating installed where it should or should not have been • Works commence but cannot be finished 6
- 7. What does Part L Say? Note - Cavity Wall Insulation is not included in the surface area calculation 7
- 8. Calculating a Major renovation • If more than 25% of the surface area of the dwelling’s thermal envelope has IWI or EWI installed, this is considered a ‘Major Renovation’ • The thermal envelope is calculated as per the BER methodology • Only the areas where heat is being lost are to be considered • Do not include areas outside the thermal envelope such as Plinths, Apex’s on the gable of a house, Intermediate floors where no heat is lost • If there are new windows being installed in parallel with EWI or IWI, they must be included in the calculation to see if the home is a Major renovation • Windows not being upgraded are still recorded as part of the thermal envelope 8
- 10. Key points to be aware of when measuring for MR • CWI is not a ‘Major Renovation’ • Make sure not to double count items e.g., discount the windows from the walls • Do not include intermediate floors in the total floor area, only the floors that heat is lost through should be included • Where there are extensions, and no wall insulation is being installed this should be recorded as area not receiving insulation • The EWI area on a work order will not be the wall area • Sloped ceilings are part of the roof space 10
- 11. How do we comply with Part L? TGD L 2019 • Where a home undergoes a ‘Major Renovation’ as per TGD L it must be upgraded to: • ‘Cost optimal performance level’ (of 125 kWh/m2/yr, B2 Energy rating) or • Ensure that the attic is insulated to achieve a U value of 0.16W/m2K, and, where relevant, the boiler (oil/gas) is replaced if it is more than 15 years old with an efficiency less than 86% or the electric storage heating system is replaced if it is more than 15 years with a heat retention of less than 45% 11
- 12. How is this Implemented on BEWH and W&W? • ‘Cost optimal performance level’ (of 125 kWh/m2/yr, B2 Energy rating) • This option is not adopted under the schemes • Ensure that the attic is insulated to achieve a U value of 0.16W/m2K, and, where relevant, the boiler (oil/gas) is replaced if it is more than 15 years old with an efficiency less than 86% or the electric storage heating system is replaced if it is more than 15 years with a heat retention of less than 45% • This is adopted but simplified 12
- 13. How is this Implemented on BEWH and W&W? • Ensure the Attic is insulated • Where a non-condensing Oil/Gas boiler is present a new heating system is installed • Storage heaters more than 15 years old are replaced with a new heating system 13
- 14. Attic • In scope • Standard pitched roofs & lean-to • Insulated to a depth of 300mm under Scheme standards • Out of scope • Where we have not carried out roof insulation previously • Dormer roofs, flat roofs, dropped ceilings etc. • It is important to ensure that the attic will be insulated upon completion • If an attic is cancelled this can result in the cancellation of the wall insulation and potentially the heating if it was to be upgraded. 14
- 15. Heating • There are two processes for recommending Heating on the BEWH and W&W scheme. 1. Major Renovations 2. Obsolete or no heating system in place Major Renovation • In scope • Non-Condensing Oil/Gas boiler • Storage heaters more than 15 years old • Out of scope • Solid Fuel 15
- 16. Obsolete or no heating system in place: If the home is receiving an attic or wall measure or the fabric has already been upgraded to standard outside the programme; • No central heating present: • A central heating system is defined as warming a building by heating water via a boiler and circulating it through pipes and radiators. For the purpose of the WHS, where a home has two or less radiators, this is categorised as no central heating present. • Electric heating (pre-1998): • Electric heating is defined as panel or storage heaters. 16
- 17. Obsolete or no heating system in place: • Warm air systems (pre-1998): • Warm air systems are defined as a system for warming a building by heating air in a central unit and circulating it through vents. • Solid fuel appliances with radiators (See below) Solid fuel appliance type η (%) Eligible for heating? Open fire and back boiler 55 Y Range cooker boilers 55 Y Closed room heater with back boiler 65 N 17
- 19. Watch Out • Attic • Can all the attic be done? • Is Ventilation possible if required? • Is there Flooring? • Are there slopes? • Are there wardrobes in the way? Will HO adjust/remove them? • Are you confident to proceed with the other EWI / Heating works etc., without having these done first? 19
- 20. Watch Out • Mid terrace houses – Usually low ratio of heat loss walls to TSA • with extension to rear – TSA increases • is it only a MR if the gable walls of the extension receive insulation? • Will neighbours allow it ? Can IWI go ahead if not ? • Will heating have to be variated off if gable walls cannot be insulated ? 20
- 21. Watch Out • Extensions • Is there existing Internal insulation to standard ? • Will a change to the EWI on gables mean that it is not a MR ? • Where gas is present, • Gas boilers will only be installed. • Existing oil systems will be upgraded to gas. 21
- 22. Major Renovations & Variations • Key pieces of information required for MR variations • Photo of data plate of boiler • Photo of boiler – Showing whether condensing or not • Concise sketches of a property with window dimensions, plinths, etc. • Copy of the Excel major renovation calculator – filled in correctly 22
- 23. www.seai.ie
- 24. Warmer Homes Scheme Warmer Homes QA Inspections failures (PH)
- 25. 25 Agenda EWI top Reworks EWI QA Analysis Surveys & Inspections checks Definitions/Terminology QA Improvements & next steps
- 32. • Permanent ventilator. • Background ventilation. • Equivalent area and Free area. • Note: New permanent and background vents must be certified to IS EN 13141-1: 2004 NSAI S.R 54 Definitions / Terminology
- 33. Photo of the flued appliance. With Permanent vent installed 1NSAI S.R 54 2SEAI Technical Standards and Specifications Combustion Wa ll Vent Permanent Ventilation Guidance can be found in Building Regulations 2014 Technical Guidance Document J Heat Producing Appliances Ventilation- Permanent vent not fitted but required:
- 34. 1NSAI S.R 54 2SEAI Technical Standards and Specifications Permanent Ventilation Ventilation- Permanent vent not fitted but required:
- 35. 1NSAI S.R 54 2SEAI Technical Standards and Specifications Permanent Ventilation Ventilation- Permanent vent not fitted but required: Photo of the flued appliance. With Permanent vent installed Combustion Wall Vent
- 37. Background Ventilation 1 Building Regulations 2019 Part F Ventilation
- 38. Background Ventilation Ventilation- Background vent not installed to standard: Side wall of extension insulated with Velux windows don't count as background ventilation as homeowner can't reach them Background ventilator: A secure ventilation opening generally located in a wall or window for the purpose of provision of general ventilation, generally incorporating a controllable ventilation grill, which can be fully closed. 1 1 Building Regulations 2019 Part F Ventilation
- 39. Background Ventilation 1 Building Regulations 2019 Part F Ventilation Ventilation- Background vent not installed to standard: New BV vents installed have had the sleeves slit to get it to fit into the hole
- 40. Ventilation- Background vent not installed to standard: Side wall of extension insulated with Velux windows don't count as background ventilation as homeowner can't reach them Background Ventilation 1 Building Regulations 2019 Part F Ventilation Ventilation- Background vent not installed to standard: Vents in bedroom and sitting room has been sliced to make the sleeve of the vent fitted into a smaller diameter core. Also, inside cover not properly fitted to wall.
- 41. Background Ventilation 1 Building Regulations 2019 Part F Ventilation Guidance for the provision of ventilation for retrofit works Reference Table-30 NSAI S.R 54 For Minimum levels of background and Extract ventilation Reference Table 31 & 32 NSAI S.R 54
- 42. Mechanical Ventilation The type of ventilation system/method chosen should be determined the level of air permeability which may be achieved.
- 43. Mechanical Ventilation Ventilation- Mechanical vent not installed to standard: Wrong outside cover on MEV in bathroom
- 44. Mechanical Ventilation Ventilation- Mechanical vent not installed to standard: New ducting from existing cooker hood needs to be securely fixed and boxed out.
- 45. Mechanical Ventilation Ventilation- Mechanical vent not installed to standard: Duct for MEV in attic not connected to roof tile vent.
- 46. Mechanical Ventilation Ventilation- Vents blocked: MEV vent cover in soffit partly blocked by EWI
- 47. Mechanical Ventilation MEV in bathroom terminates with in attic space, duct not connected to the fan Mechanical vent not installed to standard: Mechanical fan piped directly into attic space. Also not insulated.
- 48. Mechanical Ventilation Mechanical vent not fitted but required: MEV required to utility room
- 49. WH540416- Ventilation- Vents blocked: Mev vent cover in soffit partly blocked 18 out 31 of existing soffit vents half blocked by insulation. Existing roof ventilation compromised. Roof Ventilation
- 50. Roof Ventilation 18 out 31 of existing soffit vents half blocked by insulation. Existing roof ventilation compromised.
- 51. Roof Ventilation Adequate unobstructed ventilation to the roof space
- 52. Terminal on soil stack fitted horizontally should be vertical External Plumbing Fixing- Not correctly reinstated: Waste tee on waste pie from upstairs bathroom facing the wrong way. Elbow on waste pipe from kitchen sink not glued External Pluming Joints not glued
- 53. Gas Electrical meter pre works. See Fig 8 S.R.54 –section-7.3.2.3.5.1 Gas meter boxes The guidance provided by Bord Gáis Networks should be complied with when externally insulating a wall where a gas meter is already installed. For dwellings with natural gas installations, Bord Gais Networks should be contacted. They will then provide the necessary assistance to either move the meter box to a suitable alternative location or temporarily remove and then refit the meter box on completion of the works 1 1 S.R.54 –section-7.3.2.3.5.1 Gas supply services Gas Supply Service- Gas pipe covered by insulation not in accordance with Bord Gais job aid note: Gas pipework downstream of meter is recessed into insulation with cover installed over. Not to scheme standards
- 54. 1 S.R.54 –section-7.3.2.3.5.1 Gas Supply Services Gas Supply Services- Gas pipe not sleeved through insulation and wall in accordance with Bord Gais Job Aid Note: Gas pipe not sleeved through wall including EWI
- 56. Other EWI Reworks Insulation As Per Specification- Not as per Scheme Standard: Timber frame section insulated with EWI. Not all Detailing Around Windows/Doors- Not as per Scheme Standard: Reveals around rear French door not insulated. This will leave a cold bridge Joints & Seals- Not as per Scheme Standard: Condensation pipe clips not sealed to EWI, this will allow water ingress External Plumbing Fixing- Not correctly reinstated: Also not properly sealed around EWI at plinth, pipe sloped into EWI which can allow water ingress
- 57. Other EWI Reworks Insulation As Per Specification- Not as per Scheme Standard: Timber frame section insulated with EWI. Not all Detailing Around Windows/Doors- Not as per Scheme Standard: Reveals around rear French door not insulated. This will leave a cold bridge External Plumbing Fixing- Not correctly reinstated: Also not properly sealed around EWI at plinth, pipe sloped into EWI which can allow water ingress External Plumbing Fixing- Not correctly reinstated: Downpipe at rear of kitchen sitting on top of grill on gully, Unable to remove this as a result
- 58. Other EWI Reworks Detailing Around Windows/Doors- Not as per Scheme Standard: Reveals around rear French door not insulated. This will leave a cold bridge Joints & Seals- Not as per Scheme Standard: Condensation pipe clips not sealed to EWI, this will allow water ingress
- 59. Other EWI Reworks Detailing Around Windows/Doors- Not as per Scheme Standard: Reveals around rear French door not insulated. This will leave a cold bridge External Plumbing Fixing- Not correctly reinstated: Also not properly sealed around EWI at plinth, pipe sloped into EWI which can allow water ingress Joints & Seals- Not as per Scheme Standard: Condensation pipe clips not sealed to EWI, this will allow water ingress Insulation As Per Specification- Not as per Scheme Standard: Timber frame section insulated with EWI. Not all areas insulated - Insulation area Installed- > 50% of accessible area: Walls inside Porch not insulated
- 60. Initial Survey • Key to successful projects • KSN Survey= What is needed for the house • Contractor Survey= How can we deliver the required measures • The benefits are detailed work order for all staff/Sub-contractors to work to and also as a reference to look back on when completing final QA checks
- 61. Initial Survey Example of good survey completion
- 62. QADP contains a full suite of our inspectors' questions: • We recommend that you use these questions on your QA for each home • The questions are broken down measure by measure • These questions will aid you to get installation right with no reworks •QADP • https://www.seai.ie/publications/Better-Energy- SEAI Inspections Check sheet
- 63. Quality Alert Problem Statement SEAI have in 2021 observed a number of severity 1 Reworks regarding Permanent ventilation installations in relation to rooms containing flued combustion appliances
- 64. Corrective actions Contractors should ensure where combustion appliances are present that permanent ventilation that meets NSAI standards is installed. Permanent Ventilation: Is any means of permanent non-adjustable vents, opening directly to the external air. Vents for heat-producing appliances such as gas appliances are considered permanent as they are in a fixed position and are not closable. Ref: NSAI S.R. 54:2014 Table 35: Guidance for the provision of adequate supply of air for combustion products Reference NSAI SR 54 Code of practice for the energy efficient retrofit of dwellings, Section 10.2.1.1 for the choice of appropriate ventilation systems. Also Building Regulations 2014 Technical Guidance Document J.
- 66. Next Steps • Roll out Quality Alert process to COs • Identify and support COs who are having high levels QA issues • Reach out to COs for QA lessons learned and share findings • Collaborate with COs to develop FMEAs for each measure driving standard processes and controls across all COs
- 67. Thank You!
Editor's Notes
- Aine SEAI ??? IF NOT – then Hi , Just before we start I’d like to outline a few housekeeping issues …. Read through slide Can Everyone Confirm that they can hear me and see me okay ? ( Can I get a thumbs up maybe from you if you can ?
- OVERVIEW Hi, Good Morning all, Can Everyone Confirm that they can hear me and see me okay ? ( If not mentioned in previous slide or by SEAI) Thumbs up ? My name is Ruaidhri Ua Fearghail, many of you here will know me but for those who I haven’t been speaking to .,. I work for KSN Energy on the Technical team for WH. I started off on the road surveying but I’ve been in the office for the past 6 years or so covering Variations, Technical queries, Appeals Reworks and the likes
- The presentation today looks at the ‘Major Renovations’ changes to Part L and their impact the Warmer Homes Scheme
- Purpose ? November 2019 – Part L Covid March 2020 So there’s been a bit of a Bedding in period, which was interrupted periodically by Lockdowns etc still Works allocated to CO our there on the old Tender, still surveys in the system done prior to Part L Changes Look, there’s a note there, I’m not going to read through it but basically this presentation is specifically about the Warmer Homes scheme, it’s not general Part L guidance nor is it about any other scheme you might work on with SEAI. On the WH scheme we kinda go above and beyond the what’s required by the Building regs but have done it in a way to simplify the whole process, And I’ll take you through all that today
- Why do we need his ? As I’ve mentioned already, due to Covid we still have a number of surveys on the system that were done prior to the changes to Part L so they won’t have been assessed with those in mind. we’ve been working through them and there shouldn’t be many left but you may come across some and you need to be aware of that. Also, sometimes Applications get reopened, again the survey may have been done a number of years ago so when they are allocated to you you’ll have to look at the house from a MR perspective if there’s EWI, IWI or windows to be installed 2nd, Variations – This is the Key one going forwards for yourselves- if you are making changes to the EWI/ IWI or windows on a WO you might be affecting the MR threshold of upgrading 25 % of the Total Heat loss surface area, so you need to bear that in mind. It’s something that we see a lot of through variations and rather than us having to reject the variation and ask have you checked if it’s a MR, if you could volunteer that information at variation stage it would help speed up the process. We don’t want to approve a variation if it leads to you getting a reworks down the line to install a new heating system or something, again, that’s hassle for you and hassle for us & SEAI to manage offline. It’s much easier to catch it earlier. Then, Hands up here, it’ possible that there might be an inaccuracy in a survey, if the MR calcs are just on the cusp of 25 %...well there might be some borderline ones where maybe something has been put through incorrectly. Look, There are redundancies build into the whole process whereby, you as the CO check what’s on the WO given to you and then we check again with a BER / Inspection , so hopefully with the amount of people looking at an application everything is left right
- What could happen if a house is incorrectly classified ?. Builidng regs are over arching, we don’t want to be left in a situation where we are not in compliance with Building Regs Need to comply with them, BEWH is fully funded by Government run scheme 2nd Financially – the cost of a new heating system is not inconsequential – we might have a heating system installed where it was not actually required or visa versa a HO could loose out on a Heating system when they are actually eligible Finally there, you could end up unable to complete works for some reason if the house was not correctly identified as a MR….it could end up in a stalemate with HO refusing to allow certain measures to proceed. Look nobody wants to be stuck in that situation as it’s just a headache for everybody involved.
- So, what works constitute a MR ?? What does Part L say Look we don’t really want to get drawn into Part L , we just want to simplify it for the down for the scheme Looking at Table 6 – you can see on the RHS, there’s a big red X there through the stuff we don’t do on the scheme and so don’t have to worry about – we are not renovating the structure of the roof, or replacing floors or building extensions- nothing of interest to us there on the scheme, Looking then at the LHS, we do renovate External Wall with EWI and IWI and we do replace windows , so it’s just those measures that are applicable to us on the scheme. And I’ll probably touch on this again a few times throughout the presentation as we see if coming into us a bit, Cavity Wall Insulation is not classified as a Major renovation, it’s not counted towards the 25%
- How do we calculate a MR ? So we need to find out if we are upgrading more than 25% of the HEAT LOSS Area with EWI IWI or Windows or a combination of those measures. Then we’re looking at DEAP for guidance on how to measure the walls etc, as we’re using the BER methodology here. And It’s HEAT LOSS area only…..maybe the best way to about it is to think of yourself standing inside the house , now you’re looking out to see where you’re losing heat…out through the walls, windows, roof & floors We’re not including any areas outside the thermal envelope….so no plinths, apex on the gable ( Unless room in roof or dormer of course) also Intermediate floors are not counted in the Floor area … that’s one that does come up a good bit and catches people out…but you’re not losing any heat through an intermediate floor, similar to a wall shared with a neighbours house in a mid terrace or semi –D And then looking at windows – if we’re changing them then they are included in the 25% … if we’re not they are excluded from the 25%
- So here’s the Excel Calculator that SEAI have provided, you should all have a copy of it at this stage…..if not please email me and I’ll send it out to you. It should be simple enough to use. The cells in white are the ones that you need to fill in, the greyed out cells are auto populated based on your inputs. And I’ll say it again here, it’s HEAT LOSS areas only that we are looking at for these calcs, you might think that I’m overemphasizing this but believe me we still see it far too much where people are adding in other areas or leaving out areas that should be included. You can see the house here in green, granted it’s a simple one, but the principle is the same for every house First you have to fill in your EWI figure here in 1a – again this is the Heat loss wall area only, no gable peaks, no plinths no openings like windows or doors…if there’s a lean to roof maybe as part of a porch area, then that area also has to come off… again we’re going back to what is the actual heat loss wall area you are putting insulation on…and obviously that’s going to be a different figure to what is on the WO where you are getting paid through the opes and for peaks etc. Next you’re looking at your IWI and are you fitting any of that on the walls – everything in Section1 here is looking at the Wall area so any IWI on slopes is not included here and again you’re taking out any opening etc Then any CWI you are installing, and again the actual figures – not the WO figure which is based on pricing – the total minus the 15% - for the MR calcs we need the actual numbers – You’re putting in the CWI figures and the Area not receiving Insulation as we need to get the figure for the whole heat loss area Then your Heat loss floor Area- remember the Intermediate floor is not losing any heat to the outside so you are not including that. And your Roof area , most of the time those two figures will be the same but in some cases if you have a dormer or vaulted ceiling the roof area might be a bit larger Next is your windows and doors areas, separated into the areas being replace or not being replaced. When you’ve all those figures in then, you’ll be able to see the ratio of what is being upgraded against the Total Heat loss area , 40% in this case And then you’ll see Yes or NO in here in Green or Red EWWR – External Walls and Windows Renovation
- Again, here’s a couple of issues keep[ in mind when you’re doing the calcs I told you I’d mention it again….CWI is not a MR Read down through the slide here – Don’t double up windows and EWI CWI As we’ve just mentioned don’t include intermediate floor If you’ve any extensions that might be newer and already insulated to standard or any wall area that you are not insulating you need to enter that in too EWI will not be the WO figure
- So , if we look at Part L then, there two ways to comply with the MRR requirements ---- Bring it up to a B2 or ….read out option 2
- Look, we want to keep it simple on the Warmer homes scheme ..we’re not gong to try to get it to a B2, So we’ve adopted Option 2 here but we’ve simplified it to take some of the hassle out of it
- So what are we doing We’re going to do the attic If there a NON condensing boiler there it’ll need to be upgraded And if there old electric heaters there a new heating system will be installed
- Okay so , first off Attics.. What do we do under the scheme – no changes there from before – Standard pitched roofs and lean to – 300mm What’s out of scope – Dormers , flat roofs, dropped ceilings etc , ones we have never done before under the scheme You might think that the attic is a simple one but when a house is a MR the attic needs to be done to comply with Building regulations. We don’t have the autonomy to variate off an attic in these cases so you need to make sure that when you have finished all your works that attic is insulated If the attic is cancelled .. Then there will be knock on effects and the EWI & Heating may also have to be taken off the WO
- Heating on the Warmer homes still seems to cause a bit of confusion There are two different roads you can go down to be eligible for heating on the scheme The first is what we’ve been talking about for the past while… a Major Renoavtion where the Buliding regs stipulate that the heating has to be upgraded whereas the second is if a HO has an Obsolete heating system or just no Heating system at all, because you have to remember that this is a Fuel Poverty scheme also and we have to be conscious of that. So, for a Major Renovation then what are we looking for – NON condensing boiler and old storage heaters, if these are encountered and we’re upgradeding more than 25 % of the heat loss area as previously explained then a new heating system will be installed What is not in scope and not mentioned in Part L is Solid fuel heating systems… if the house only has a solid fuel heating system and you are doing a MR then you don’t have to worry about it from that point of view……..it does bring us nicely on to the next slide though as if there is only a Solid fuel system in place then it may be eligible to be upgraded under the scheme standards if it’s deemed to be Obsolete or maybe in the case of room heating appliances only then there might not actually be a central heating system in place/.
- So forget about MR …this path to heating is for everyone on the scheme …it’s outlined in the Operations Manual ..I’d implore everyone to go back and familiarise themselves with it. So we can see it here on this slide If we’re doing the attic or walls or the HO already has them up to standard then depending on what heating is present we may be able to install a new heating system. First off , look if there’s no central heating in the house at all then we can install a heating system, SEAI have said 2 or less Rads then it doesn’t have a central heating system Again if there’s old electric heating there
- Or those Warm Air systems…you don’t really see them anymore but if you do come across one a new heating system can be installed Then Finally if a house has a Solid fuel system with Rads then we just have to look at this table here…again it’s in the Ops Manual.. So Open fire or range with rads off it then grand we replace the heating system with a new Oil or Gas system What we’re not replacing is the ‘Closed room heater with back boiler’ so essentially stoves with back boilers and rads off it…look it has a better efficiency than the other solid fuel appliances, they are generally new enough and more modern and the HO will want to keep them. Also making good is often a problem with them
- Are there any exceptions to the Rule ? Look this is what we kinda touched on earlier when we said some attic types like dormers etc are out of scope. If you look at Table 7 here there is this section here that refers to works being Technically Functionally or Economically Feasible There may be times when a roof cannot be done for example …it might be in poor structural condition , maybe tiles are cemented in and the required ventilation is not possible or whatever it is that you come across If there are issues like this will you send them in to Warmerhomestechnical@ksnenery.ie and we’ll take a look at them …. It might be that that an exception can be made in certain circumstances due to it not being T … F ..E ..possible.
- Just coming up towards the end on this now a couple of things here that come into us a bit that you should probably watch out for when you have a MR Like I said before Attic might have been looked at as the simple, shallow measure that’s not a problem but it often can become a problem on MR as, once again., the Attic has to be done to comply with building regs. Look I know I already mentioned it but it’s something that has come up again and again and again where attics haven’t been done and the house was a MR and now the CO is left stuck in limbo. So when you have a MR it’s probably good practice to make sure there are going to be no obstacles to completing the attic Are you going to have problems installing ventilation if it’s required ? Is there flooring the HO needs to take up….are you sure they will…are you willing to bear the cost of that if eth HO changes their mind one you have the EWI or heating installed ? Can you do all the slopes, will the HO adjust the wardrobes etc for you It’s some thing for yourselves to manage but do you want to get the attic done first ..or are you happy to leave it till the end …what ever way it’s done at completion of the works it needs to be insulated.
- Again Mid terraced houses sometimes pose problem When you first look at a mid terrace house , naturally the heat loss area is lower as you have adjoining houses so you might think ….grand this is a MR no problem… But then you might find they have a large extension out the rear…in some cases nearly the same size of the house… then that were the issues start to arise.. Read slide…. Look at floor plan…kitchen downstairs ..IWI no good etc
- Again ..it doesn’t necessarily have to be a mid terrace…but often extensions are signs to thread carefully if the house is a MR…particularly if it’s only just meeting the 25 % .. then any changes to the EWI figure could tip it one way or the other Often as we’ve just seen extension to the rear of the house are for kitchens or bathroom and the chances of doing IWI are slim so you are really relying on being able to install EWI …will there be problems with getting permission from neighbours ? Are there obstructions there…old boundary walls, trees, neighbouring extension with narrow gap I suppose it just to keep all this in mind when you see an extension on a MR job SEAI have said that GAS only to be installed where Gas is available…if the HO previously had Oil then they are going to have to change to gas…you’ll need to make sure they are okay with that before starting works as again the heating will need to be upgraded.
- Finally a bit about Variations ..as you can see here there’s a couple of things we need if you are putting in Variations for a MR …… Make & model of boiler Condense pipe coming out underneath The excel calculator and your sketches and measurements to show where those figures are coming from Thanks for listening …if you have any questions as mentioned previously we will have Q&A session at the enI’ll pass you over to Philip now who is going to go through some QA issues with you.