Cold Bridging Thermal cold bridges occur in construction wherever a conductive material, for example steel, can take heat from the inside to the outside of the building building. such as lintels, wall plates, sloping ceilings, reveals and soffits. Iso-Spray DIY Foam is sprayed to eliminate cold spots.

Building Envelope Air Leakage Sealing and Control Under new the new 2006 Building Regulations,  Amendments to Part L of Building Regulations extend the requirement to control air leakage from the building envelope. The currently accepted figure is a test result showing that air permeability does not exceed 10m³/hr/m² at an applied pressure difference of 50Pa. Through the Building Regulations Approved Document Part L, the UK Government is increasing the standards of energy efficiency in buildings. The air tightness of a new buildings is tested by means of Air Permeability Testing.

All buildings given an internal positive pressure difference compared to the outside will create air movement to the outside and with that allow energy to be lost as warm air moves to the outside cold air. Significant loss of energy can occur which is why the Building Regulations since 2003 have been tackling the problem of a buildings Air Tightness or Air Leakage and Air Permeability, all terms being used interchangeably in the construction industry. Air leakage relates to the extent to which air can move from inside to outside the building (or visa-versa,) as a result of gaps, openings, porosity, etc, in the fabric of the building and the building design. The less resistant a building is to air leakage more air infiltration will occur due to pressure differences between outside and inside driven by the wind and the stack effect.

The following table is an extract from the Air Tightness Testing and Measurement Association TS1:-

Iso-Spray foam can help seal the building envelope in hard to seal place like wall plate areas where gaps between rafters, wall plate and outside soffits and fascias boards provide ample room for air leakage.

Insulating Pipes Use Iso-Spray DIY Foam can be used in plumbing to seal and insulate around gaps where pipes penetrate walls, ceilings and floors. Iso-Spray DIY Foam also minimises the noise from water-rush and transmission of sound through unsealed gaps and holes.

Roof Insulation Iso-Spray DIY Foam can be sprayed directly onto the underside of roofing felt to insulate or can be used to seal all gaps around pre-formed insulation material, particularly in awkward areas such as dormers where it is difficult to conventionally insulate.

Wall and Cavity Insulation Iso-Spray DIY slow rise Foam sprayed onto the inside walls insulates and provides a moisture barrier. It can be sprayed between stud walls aligned against the outside wall to create a dry lined and insulated wall, useful when the wall is a large heat sink and has an eneven surface that dry lining can take out.
 

Water Control Iso-Spray DIY Foam provides excellent water and vapour resistance. It is ideal to fill voids, insulate and prevent condensation on ship and canal barge hulls and in areas of high water vapour incidence.

Skillings, ceilings against rafters, sloping ceilings, areas where it is not possible to get insulation behind. Iso-Spray DIY Foam slow rise foam can be injected into voids and clear cavities where it is not possible to get conventional insulation in nor provide a top sided ventilation gap for mineral wool insulation. The risk of interstitial condensation can be avoided by ensuring that the foam forms a composite material with the substrate and that no cold bridging (e.g. brick rubble) is left within the cavity before spray injecting the foam.

Flood Protection Iso-Spray DIY Foam's extraordinary adhesive strength and water resistance enable it to be used to protect buildings against flooding. Iso-Spray DIY Foam can be used to fix and seal pre-cut materials such as plyboard in front of doors, windows, air vents and other areas where floodwater can penetrate.
 

Sealing Holes Iso-Spray DIY Foam can be used to seal and insulate all unwanted openings in the building fabric.
 

Fixing Boards and Spray Sealing Iso-Spray DIY Foam can be used to fix the boards in place and minimise energy sapping air leakage by sealing all gaps. Time can be saved by spraying awkward areas rather than cutting insulation boards to fit.
 

Other uses Iso-Spray DIY Foam can be used to stabilise and insulate old roofs suffering from nail fatigue, fix in place loose tiles, fix insulating boards, packaging delicate goods and temporarily sealing ongoing construction work.