Archives

Home / Portfolio
Quality Assurance

Quality Assurance

Project Info

Applying external wall insulation appears like it should be a relatively easy process to install and monitor for quality. After all you can see if the insulation is present and continuous as its on the outside of the building. Our client had installed EWI to over 300 properties and was confident the contractor had done a good job, some properties had however complained just 3 months after install of some cold regions and wall paper pealing away from the walls.  

 

How IRT Surveys helped: 

SERVICES USED :

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

OUTCOME :

IRT assessed all 300 properties in one evening and identified 89 failures in the insulation detailing which was allowing moisture to bypass the system and track along the support system behind. This in turn was building up until it was penetrating the property leading to internal ingress issues. IRTs report was able to show the exact location of the defects within the properties allowing for a focused repair operation to be carried out. The remaining properties all showed a well insulated EWI system. A repeat survey was carried out 11 months after install and before the end of the retention period. This found that all issues had been addressed and no further issues were present.

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.  

Underfloor Heating

Underfloor Heating

Project Info

Our client had won a contract to refurbish an office block, part of the brief included installation of new internal partition walls. Unfortunately, the entire property had underfloor heating pipes buried within the floor screed. No plans or records remained to show where the pipes lay. This caused huge problems for the contractor as he was unable to drill into the floor in case he hit a pipe.

 

How IRT Surveys helped: 

Services used :

  • Thermal Imaging

Outcome

Utilising our thermal imaging technology, IRT were able to pinpoint the exact locations of the pipework, highlight them directly on the floor and mark them on a scale plan. As part of the survey we also detected a region of damaged pipework which was leaking and also sections of the pipework had been poorly laid resulting in inconsistent heating.

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.
Energy Dashboard

Energy Dashboard

Project Info

Carrying out energy calculations and what-if scenarios can often be slow and expensive. Our client relied on external consultants and contractors to provide energy and saving calculations based on their products. This often lead to over ambitious savings being suggested to help justify a product sale. Our client was looking for an easy to use independent means of carrying out calculations quickly and easily.

 

How IRT Surveys helped: 

Services used :

  • Thermal Imaging
  • EDash

Outcome

IRT carried out an initial site survey and delivered a detailed thermal report identifying the current real performance of the property. In addition to this, the client also received a bespoke EDash login. EDash allows users to simulate retrofit measures by simply moving a slider and hitting calculate. Each calculation shows the impact on the EPC, £s, CO2 and kWh savings. Edash uses the SBEM calculation engine and a range of elastic templates to provide a close approximation to your property.