Tuesday, 31 July 2012

Air Pressure Testing & Thermal Imaging

Thermal imaging is the ideal tool to compliment an Air Pressure Test as it helps identify where heat is being lost from your buildings

What is Thermal Imaging
All things, even freezing ones, release heat as infra-red radiation which stops emitting when the temperature falls to  absolute zero (-273°C) but you need thermal imaging equipment to see the Infrared emissions as its wavelength is too long to be recognized by the human eye. 

The equipment used is thermal imaging camera which works by discovering the infra-red image produced by an item, and then transforming it to images that can be seen by the eye. The camera detects the different levels of emitted infrared in relation to the object's temperature and represents them as different colours, usually ranging from black or blue for the coldest areas to yellow, orange and red for the hottest areas

Most contemporary thermal imaging cameras figure out the heat range of each aspect of the item according to the level of infra-red produced and can store the pictures electronically. Software is also available to help users analyze and understand the thermal images

Interpreting a thermal image is not something that is easy to do and takes a degree of skill and expertise.

Different components and areas release heat at different rates, so some allowance must be made for the construction of each different item inspected.

Carrying out a Thermal Imaging Survey
To carry out surveys on a new or existing property you would employ thermographer where they would be able to identify and locate many problems and help reduce the heatloss with the building envelope.

Sap Service Uk use the latest detection equipment with fully trained personnel to achieve reliable results in the most demanding building applications and have Uk coverage.

  •          To book a Thermal Image Survey phone John Stobbs
                   on 0776 843 2905 
  •          Email us on john@sapservice.co.uk
  •          Ask about our Onsite Consultancy and Workshops

Saturday, 28 July 2012

Air Pressure Testing ~ The Blower Door

A Fan known as a blower door is mounted into the frame of an external door with buffered frame clamps ensuring that there is no damage to frame or door. Once the blower door fan is secure we then power the fan up to pull air out of the building which in turn lowers the air pressure inside. The air pulled out of the building is controlled by our tester and the higher external air pressure streams through finding all the all unsealed gaps and holes through the building. The main aim of the Air Test is to determine the air infiltration rate of a building and the Tester must work hand in hand with our As Built Sap Assessment produced after construction.

Blower Door
The Air Test that is carried out by our experienced Engineers is a calibrated air tightness test and it allows us to measure the amount of air sucked out of the property and also gauge the overall air tightness of the building.   The fan via computer will produce a printout of the calibrated test and with this data we can discuss the air permeability of the building and review with the developer any work to be carried out to seal up weak areas etc.

      Good air permeability can save energy and money of the occupant’s energy bills.

      Thermal Imaging helps to identify and locate air leaks in the buildings envelope.

We have a short slideshow presentation that will give a little more insight to Testing Slideshow Link

  • To book an Air Test phone John Stobbs on 0776 843 2905
  • Email us on john@sapservice.co.uk
  • Ask about our Onsite Consultancy and Workshops.

Friday, 27 July 2012

Air Pressure Testing ~ Workshops

At Sap Service Uk we believe in the Fabric First approach when building as it is our future.
For the last Five years we have been advising our clients on new technology and design with our Invite only websites and this is what has given us our Reputation in the Energy market. For over a year now we have been carrying out our Virtual Training using our 'Green Platform' site using video and Slideshows sponsored by our world class partners and Uk associates.
Airtightness coupled with the Fabric First approach is key to good design and with this we have launched our On Site Consultancy when building to educate at an early stage the key principles of airtight design.
Today we had our fourth such on site workshop with Property Owner, Housebuilder  Joiners, Plumbers, Architect onsite at the first fix stage with timber frame,floors,windows being erected/installed perfect for pointing out detail and demonstrating issues with heatloss.
The workshop went well and was it was acknowledged by all as being a worthwhile excercise.
Our visit has prompted us to design our next slideshow on the basic stages of detailling and guarding against heatloss through fabric etc.

Our Onsite Workshops are contained to Central Scotland and Lothians at present but we have been asked to hold them over the border and we are currently reviewing this service with our testers and associates.