Frequently Asked Questions

Frequently Asked Questions FAQ


As a quick guide to some of the the terms used in our brochures and website please consult the following articles:

Glossary of terms


Airborne sound

  • Sound propogating through the air, often linked to noise sources such as music systems, televisions and speech.
  • To browse our range of solutions designed to reduce airborne sound please click here. 

 

Compressive strength

  • is the capacity of a material or structure axially directed pushing forces. When the limit of compressive strength is reached, materials are crushed (source: wikipedia.com). Cellecta’s range of high performance HEXATHERM andeco XPS thermal insulation products feature high kPa values (compressive strength) allowing them to withstand heavy loads. For more information on these solutions please click here.

 

Flanking Transmissions

  • Sounds transmitted between rooms via flanking elements instead of directly through seperating elements or along any path other than the direct path. To browse our range of solutions designed to reduce flanking tranmission please click here. 

 

Impact sound

  • Sound resulting from direct impact on a building element. For example foot traffic. To browse our range of solutions designed to reduce impact sound please click here. 

 

kPa

  • Is the measure of force per unit area, defined as one newton per square metre.Cellecta’s range of high performance HEXATHERM and eco XPSthermal insulation products feature high kPa values (compressive strength) allowing them to withstand heavy loads. For more information on these solutions please click here.

 

Resilient layer

  • Is the measure of force per unit area, defined as one newton per square metre.Cellecta’s range of high performance HEXATHERM and eco XPSthermal insulation products feature high kPa values (compressive strength) allowing them to withstand heavy loads. For more information on these solutions please click here.

 

Resilient layer

  • A layer that isolates a floating layer from a base floor surround walls. click here for more information on our no.1 best selling under screed resilient layer YELOfon HD10+

 

Thermal Bridging

  • is a thermally conductive material which pentrates or bypasses an insulation system; such as a metal fastener, concrete beam, slab or column. Heat will flow along the easiest path from the heated space to the outside – the path with the least resistance. This will not necessarily be the path perpendicular to the surfaces. Frequently heat with “short-circuit” through an element which has a much higher conductivity than surrounding material, which can be described as a thermal bridge.

Typical effect of thermal bridges are:

  • Decreased interior surface temperatures, in the worst cases this can result in condensation problems, particularly at corners.
  • Significantly increased heat losses and cold areas in buildings

 

Thermal conductivity

  • This is a measure of the rate at which material will pass heat and is expressed in units of watts per metre per degree of temperature diffence (W/mk)

 

U-Value:

  • This is a measure of how much heat will pass through a square metre of a structure when the air temperatures on either side differ by one degree. U-values are expressed in units of watts per square metre per degree of temperature difference (W/m2k)
  • To browse our range of solutions designed to deliver super high U-values click here.

 

Y-values:

  • This is a measure of the total heat loss expected from all of the thermal bridge losses in all of the junctions in the building.

Contact us here if you require any of the following:

  • How to comply with current Building Regulations,
  • Need a U-value,
  • Condensation risk or imposed load calculation,
  • Written specification,
  • Detailed fixing instructions,
  • Advice on The CODE for Sustainable Homes
  • Arrange an appointment with one of our experienced technical consultants.

 

2 Comments

  1. sjburnell April 8, 2014

    Your web site says “screws required?” ‘Tick’ for DeckFonChip26T but surely this is not true?

    reply
    • Jamie Street April 9, 2014

      Many thanks for bringing this to our attention, this has now been corrected.
      Kind regards,
      Jamie Street

      reply
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