Welcome to Metropolitan Insulation Services, The Capital's foremost insulation and sound insulation installers. We cater for all types of soundproofing, sound and noise reduction, sound proofing systems and airborne noise.
Spray-applied foam is applied as a liquid to roofs and walls. It expands to create a superior insulation and an acoustic barrier. It adheres to everything, effortlessly sealing gaps and preventing surface interstitial condensation.
Spray-applied foams unique sealing qualities also have a significant effect on reducing airborne sound penetrating the property is also ideal for soundproofing interior walls and floors and around plumbing stacks to reduce the sound of water rush.
Better Air Quality
There are no noxious or odious fumes or vapours in the cured form. Spray-applied foam is especially recommended for those suffering from allergies, asthma, or other respiratory problems. It contains no formaldehyde and has no detectable emissions once cured. It contains no fibres and does not shrink, sag, settle, slip or turn to dust. It offers no food value to bacteria, fungi, insects or vermin. Humidity and condensation are better controlled so that the health concerns with regard to mould or mildew are relieved.
Spray-applied Polyurethane Foam and the Environment.
An independent review of the impact of thermal insulation on global warming and * the potential for further savings in carbon dioxide emissions was carried out recently. The results were reported in a document J entitled Thermal Insulation and its Role in Carbon Dioxide Reduction. This report, written by Caleb Management Services, highlighted three significant findings:
- It was recognised that thermal insulation can play a key role in the cost effective reduction of carbon dioxide emissions in Europe and could save up to 350 million tonnes per annum by 2010.
- Retrofitting of un-insulated or poorly insulated properties provides by far the highest contribution to carbon dioxide savings and suggests that the targeting of retrofit programmes to those member states with average carbon dioxide emission rates above 0.5kg/kWh for power generation should be prioritised.
- Insulation materials that can be most easily and efficiently retrofitted need to be prioritised.
The report also pointed out that insulation materials should be highly efficient in terms of performance at low thickness levels, should have a high strength-to-weight ratio, and should be easy to apply, fibre-free and resistant to moisture. The key requirements listed above admirably describe the properties of spray-applied polyurethane (PU) foam. The two-component liquid system produces a highly efficient blanket of insulation with a thermal conductivity of O.Q2W/mK. It is particularly easy and cost-effective to apply to a wide variety of substrates and is fibre-free.
Its closed-cell nature renders it very resistant to moisture ingress and grades are available which achieve both Class 1 and Class 0 fire ratings when tested to BS476 Part 7 and Part 6 respectively. Furthermore it has a very good track record in retrofit applications, both domestic and industrial.
One of the most important aspects of spray-applied polyurethane foam is the fact that it produces a seamless blanket of insulation giving rise to a product without joints. Any jointed system, including insulation boards, gives rise to a potentially weak point leading * to a significant loss of insulation value. In a report carried out into the life-cycle assessment of insulation materials, it was concluded that "PUR rigid foam can make an important contribution to the protection of the environment, especially through retrofitting of existing buildings.
Spray-applied polyurethane foam can provide the most cost effective method of converting loft and barn roofs and walk and meet the ever-increasing demand for energy efficient buildings. PU foam is applied directly to the underside of the tiles or roofing felt, creating a warm deck construction without the need for a ventilated airspace.
Only 75mm thickness is required to achieve a U-value of better than 0.25W/m2K. This fits snugly between the rafters so that they may be left exposed as an aesthetic feature. Problems of evening — up irregular surfaces, such as closing the ventilation off at eaves level, are easily overcome by building up the foam to the required profile. After some attention to trimming and removing over spray, a single coat of bonding plaster is laid to leave an attractive, authentic finish.
The design complies with BS 5250: 2002 'Control of Condensation in Buildings' with no occurrence of surface or interstitial condensation.