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External Wall Insulation

External Wall Insulation

Quality Assurance

IRT Surveys can provide you with a thermographic survey during an external wall insulation install. The image below reveals a 2 bed semi-detached domestic property before and after the  removal of old timber frontage, application of EWI and  loft insulation. 

Thermographic imaging and analysis  provided within our reports is easy to follow and highlights the clear energy saving benefits of EWI on a property. Because IRT surveys offer a completely impartial service, you and your clients can have peace of mind that the images show evidence of good workmanship.

Fault Finding

Thermal images, within the footer below, were taken a short while after the installation of an EWI system. They reveal warmer temperatures, depicted in red and yellow colours,  the most significant of which indicate likely points of  moisture ingress at points around the junction detailing.  

An IRT Survey is able to assess for failures in the insulation detailing across the entirety of a property, which can allow moisture to bypass the insulation and track along the support system behind. Infrared can show the exact location of any defects and allows for a focused repair operation to be carried out before it becomes and issue.

Cold bridging is a common issue where external wall insulation has been applied. IRT surveys can also detect and highlight and locations where cold bridging is apparent and can compromise the thermal benefits of the system.

 

What Else Can IRT do for you?

  • Survey and analyse large quantities of properties to give estimated CO2 and cost savings upon any energy saving measures applied. 
  • Recommend, where applicable, that a repeat survey be carried out  before the end of the retention period to ensure that all issues are addressed and no further issues are present.
  • Available for domestic and commercial properties.

External Wall Insulation SERVICES AVAILABLE :

Stock Surveys

Stock Surveys

Project Info

Our client, a large local authority, had undertaken a refurbishment program of works across several decades. Several of the properties were now showing issues with high energy builds and in some cases internal mould growth. On paper the properties should have been performing far better as they had been cavity filled in the late 2000's and had been double glazed in 2010 with boiler improvements in 2014.  A fast low cost inspection program was required to determine the cause of the issues.

 

How IRT Surveys helped: 

SERVICES USED :

  • Thermal Imaging
  • SAP2012 Calculations
  • TheHouseSurvey.co.uk

OUTCOME :

On receipt of the clients stock list, IRT created an efficient survey plan allowing us to survey regions quickly and with minimum disruption. The front of every property was thermally imaged by our surveying team and the exact gps location and time/date logged automatically. Total survey time was 32 evenings/nights.

This data was then processed using our bespoke Envision software to determine regions of the property indicative of possible insulation defects. Envision builds 2 theoretical models of the property, one as if it were perfect and another with the identified defects in place. Energy use and CO2 output are determined for both models resulting in each anomaly being quantified for its impact on the building allowing every property to be ranked and rated.

Envision produces an As Built SAP and EPC rating along with an actual comparison, in addition to this Envision also runs a range of "what if" scenarios, such as Roof improvements, improved double glazing, boiler changes, and reports on the impact of each in terms of £s, kWh and CO2 saved per year.

This data was presented in an easy to use Excel spreadsheet with the thermal images embedded. The house survey.co.uk, our online property database was also provided as part f the package. This allows users to easily log on, search for properties, updated information, re-run calculations, map data and produce reports. (www.thehousesurvey.co.uk) 

Poor insulation in a home
Render Surveys

Render Surveys

Project Info

Rendered properties can often prove problematic when they begin to fail. Typical failures result in large sections of concrete falling from potentially 10's of metres up. Our client had a large residential and commercial property portfolio which were all built and rendered in the late 1950s and 60s. Many of these properties were multi-storey and multi-tenure. Traditionally, our client would wait for a render failure, notify tenants, scaffold an entire block then hammer test each elevation until they found defective areas. This process was proving far too costly and time consuming and was not a scalable solution.

 

How IRT Surveys helped: 

Services used :

  • Thermal Imaging
  • The House Survey

Outcome

IRT surveyed all of the properties over 4 evenings and identified all regions of delamination/boss render for each property. From ground level, we could detect a defect as  small as 12 cm2 3 storeys up. No need to alert the tenants or cause disruption with scaffolding. Each property was uploaded to our site thehousesurvey.co.uk where the results could be viewed securely and onsite by contractors. This data set resulted in the realisation that only 4% of the properties revealed significant issues requiring further action. The remaining properties can be assessed on a yearly basis with any delamination being detected early.  

The House Survey

The House Survey

Project Info

Our client needed a way to engage with private homeowners, gather property information and provide funding solutions. Leaflet drops, door knocking and cold calling had provided good initial results but were now more of a nuisance to the homeowner than a benefit. 

 

How IRT Surveys helped: 

Services used :

  • Thermal Imaging
  • The House Survey Website

Outcome

IRT carried out a thermal imaging program of the front elevation of all 7000 properties in 10 days. Each property was assessed for heat loss and run through our envision software. This provided estimated SAP, EPC ratings and refurbishment savings. This data was uploaded to thehousesurvey.co.uk website and each homeowner sent a secure login code. This initial letter drop resulted in a 38% engagement whereby users could see the thermal image of their home and update property details. This data was automatically collated and mapped on the site allowing our client to see geographically the best and worst homes, who had engaged and how they were interested in improving their properties.
See www.thehousesurvey.co.uk for more information. 

TheHousesurvey.co.uk individual home page.
TheHousesurvey.co.uk individual property page.
TheHousesurvey.co.uk report page.
e-dash

e-dash

Take the hard work out of your refurbishment decisions 

eDash: the simple, easy and fast answer to your energy savings questions

Do you want to see if changing lights in your buildings will yield the savings you are after?What about a change in the heating system? Will this give you value-for-money and expected ROI? Need help to see what you can do next in your refurbishment programme?

Get the truth on your refurbishment ROI - Simple, Easy and Fast using eDash, the simple way to interact with your property or property portfolio. You don't need to be a property professional or an energy expert to realise significant savings from building upgrades. eDash removes the consultant, adds impartiality, saves you money and puts you in charge. Thousands of calculations are happening in real time to deliver you one thing -  true and accurate advice.With no vested interest in the outcome, you can rest assured the advice you are being given is honest and without hidden agenda.

Services used :

  • Thermal Imaging
  • EDash

Outcome

Each calculation shows the impact on the EPC, £s, CO2 and kWh savings. eDash uses the SBEM and SAP calculation engines and a range of elastic templates to provide a close approximation to your property.