reflective technology

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Philomena Leonard
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1 05 / 4210 reflective technology 06/05 to create thermal efficiency

Why did regulation change? With the Government s commitment to the Kyoto Agreement, there have been more stringent requirements to reduce Carbon Dioxide emissions in buildings.

2 Why did regulation change? With the Government s commitment to the Kyoto Agreement, there have been more stringent requirements to reduce Carbon Dioxide emissions in buildings. This has led to increased requirements in terms of thermal efficiency and airtightness. The new Part L and in Scotland Part J require more stringent elemental u-values With the constant lowering of u-value requirements in the Building Regulations and the pressure on the Government to reduce Carbon Dioxide emissions, the thermal requirements of building components have become very onerous. The timber frame industry has always been able to meet comfortably the requirements laid down by the Government and has always proved a popular, energy efficient type of building. The recent changes in the u-value requirements have meant that a number of options are now available to the timber frame industry and have proved its flexibility of design. The development of these products has been specifically designed to help architects and specifiers meet the new thermal efficiency requirements. Reflectashield TF is the only reflective breather membrane that complies with the vapour resistance requirements set out by BS 4016, TRADA and the NHBC. The existing legislation requires a breather membrane to have a vapour resistance not greater than 0.60 MNs/g. Reflectashield TF has a vapour resistance of 0.45 MNs/g. Advantages Unique patented three layer composition. Low vapour resistance. Waterproof. High strength to weight ratio. Improved thermal resistance. Complies with BS 4016, TRADA & NHBC requirements. 2.7 metre wide rolls. The A. Proctor Group can provide a whole range of solutions for a variety of u-values, down to as low as 0.18W/m 2 K for wall applications. The options available range from a reflective breathable membrane (Reflectashield TF) to a reflective vapour control layer (), and includes multi-layer reflective insulants (Tri-iso Super 9) and laminates (Plustherm). two

Reflectashield TF and Key Point to Watch: Ensure all

5mm Brick b) 50mm Cavity c) Reflectashield TF d) 9mm OSB

5mm Plasterboard three Acoustic Insulation

3 Reflectashield TF and Key Point to Watch: Ensure all laps are sealed in Reflectatherm. Construction a) 102.5mm Brick b) 50mm Cavity c) Reflectashield TF d) 9mm OSB e) 89mm Glasswool f) g) 19mm Cavity (stud) h) 12.5mm Plasterboard three Acoustic Insulation Geoengineering Solutions Construction Membranes Thermal Insulation Vibration Isolation

Reflectashield TF reflectashieldtf Reflectashield TF is a result of in-depth research into meeting the timber frame requirements of reducing the u-values for walls, whilst minimising the risk of

Reflectashield TF is a non-woven polypropylene film laminate, providing excellent emmissivity along with breathability and providing secondary protection to the building during construction.

4 Reflectashield TF reflectashieldtf Reflectashield TF is a result of in-depth research into meeting the timber frame requirements of reducing the u-values for walls, whilst minimising the risk of condensation. Reflectashield TF is a non-woven polypropylene film laminate, providing excellent emmissivity along with breathability and providing secondary protection to the building during construction. Reflectashield TF The product is installed on the external face of the timber frame foil side face out, similar to that of a traditional breather membrane, with the added thermal benefits associated with a reflective insulant. The A. Proctor Group has, for many years, been a leader in the timber frame breather membrane market and this latest innovation will provide timber frame manufacturers with improved thermal efficiency of the wall with minimum, if any, increase in timber stud size and thus less intrusion into the internal room dimensions. 05 / 4210 U Value - Condensation Risk Analysis four

U Value - Construction Type (meeting English and Welsh regulation requirements) Element: Timber frame wall Internal surface emissivity: External surface emissivity: Building Use: Wall - Reflective

5 U Value - Construction Type (meeting English and Welsh regulation requirements) Element: Timber frame wall Internal surface emissivity: External surface emissivity: Building Use: Wall - Reflective Breather - Mineral Wool K Value mm studs High High House or Flat Thickness Thermal Thermal Vapour Vapour Conductivity Resistance Restivity Resistance (mm) (W/mK) (m 2 K/W) (MNs/gm) MNs/g) 1 Outside surface resistance Brick, Dense, External Reflectashield cavity - vented Reflectashield TF OSB Mineral Wool - 15% Bridging Procheck Premier Plasterboard Inside surface resistance U-value, Combined Method : 0.35 W/m 2 K (See page 8 for further U-values with performance ready reckoner) Based on the combined method for determining U-values of structures containing repeated thermal bridges. U Value - Construction Type (meeting Scottish regulation requirements) Element: Wall - Reflective Breather - Mineral Wool K Value mm studs Timber frame wall Internal surface emissivity: High External surface emissivity: High Building Use: House or Flat Thickness Thermal Thermal Vapour Vapour Conductivity Resistance Restivity Resistance (mm) (W/mK) (m 2 K/W) (MNs/gm) (MNs/g) 1 Outside surface resistance Brick, Dense, External Reflectashield cavity - vented Reflectashield TF OSB Mineral Wool - 15% Bridging Procheck Premier Plasterboard Inside surface resistance U-value, Combined Method : 0.30 W/m 2 K Based on the combined method for determining U-values of structures containing repeated thermal bridges. For advice on meeting IRISH Regulations (U-value 0.27 W/m 2 K) and lower U-values Please contact The A. Proctor Group Techline. Roll Specification Roll size: Colour: 2.7m x 100m Silver and White (Silver installed to the outside) five Acoustic Insulation Geoengineering Solutions Construction Membranes Thermal Insulation Vibration Isolation

This airspace can be utilised as a service void which reduces the number of penetrations to the vapour control layer, thus enhancing the thermal efficiency and reducing the condensation risk.

6 reflectathermfoil is a reflective vapour control layer. The membrane should be installed in the traditional manner, on the inside face of the insulant and should have a minimum of a 19mm airspace between the plasterboard and the vapour control layer. This airspace can be utilised as a service void which reduces the number of penetrations to the vapour control layer, thus enhancing the thermal efficiency and reducing the condensation risk. The VCL is reinforced to increase its robustness and to reduce the risk of tearing on site. Again, all laps should be sealed and any penetrations sealed around to prevent moisture migration. This will also increase the airtightness of the building and should be taken into consideration during design. Advantages High vapour resistance Improved airtightness Creates service void Creates an unbroken vapour control layer Improved thermal resistance Meets the requirements of the new Part L in England and Wales, Part J in Scotland + U Value - Condensation Risk Analysis six

U Value - Construction Type (meeting English and Welsh regulation requirements) Element: Wall - Reflective VCL - Mineral Wool K value 0.

7 U Value - Construction Type (meeting English and Welsh regulation requirements) Element: Wall - Reflective VCL - Mineral Wool K value mm studs Timber frame wall Internal surface emissivity: High External surface emissivity: High Building Use: House or Flat Thickness Thermal Thermal Vapour Vapour Conductivity Resistance Restivity Resistance (mm) (W/mK) (m 2 K/W) (MNs/gm) MNs/g) 1 Outside surface resistance Brick, Dense, External Cavity - vented Frameshield OSB Mineral Wool - 15% Bridging Reflectatherm Cavity - timber straps Plasterboard Inside surface resistance U-value, Combined Method : 0.34 W/m 2 K Based on the combined method for determining U-values of structures containing repeated thermal bridges. U Value - Construction Type (meeting Scottish regulation requirements) Element: Timber frame wall Internal surface emissivity: External surface emissivity: Building Use: Wall - Reflective VCL - Mineral Wool K value mm studs High High House or Flat Thickness Thermal Thermal Vapour Vapour Conductivity Resistance Restivity Resistance (mm) (W/mK) (m 2 K/W) (MNs/gm) MNs/g) 1 Outside surface resistance Brick, Dense, External Cavity - vented Frameshield OSB Mineral Wool - 15% Bridging Reflectatherm Cavity - timber straps Plasterboard Inside surface resistance U-value, Combined Method : 0.29 W/m 2 K (See page 8 for further U-values with performance ready reckoner) Based on the combined method for determining U-values of structures containing repeated thermal bridges. For advice on meeting IRISH Regulations (U-value 0.27 W/m 2 K) and lower U-values Please contact The A. Proctor Group Techline. Roll Specification Roll size: Weight: Thickness: 1.35m x 50m (Other sizes available on request) 110g 0.17mm seven Acoustic Insulation Geoengineering Solutions Construction Membranes Thermal Insulation Vibration Isolation

8 Product Selector Waterproof Resistant Reflective Breather Reflective VCL Reflectashield TF Yes Yes Yes Yes U Value - Performance Ready Reckoner Stud 89mm 95mm 115mm Insulation K Value Reflectashield TF * * * Reflectashield TF & Stud 140mm 145mm Insulation K Value Reflectashield TF Reflectashield TF & * * Does Not Comply Complies Part L (England & Wales) Complies Part J (Scotland) Complies Part J (Scotland) Non SEDBUK Boiler and Part L (Ireland) 0.27 * When utilising rigid insulation boards between studs, accommodation for services should be considered. The above calculations are based on fully filling the stud with insulation, therefore additional space for services should be designed, if appropriate, with either increased stud depth or service cavity Construction Construction Base used on above calcs Substituting Reflectashield TF or as appropriate 102mm Brick - 50mm Vented Cavity - Breather Membrane - Frameshield 100 or Reflectashield TF Cavity R-Value mm OSB - Timber Stud - 15% Bridging - Vapour Control Layer - Procheck Premier or with 19 mm service void 12.5mm Plasterboard - Based as 15% Timber Thermal Bridge Physical Properties Properties Units REFLECTASHIELD TF REFLECTATHERM Basic Weight g/m Roll Size m 2.7m x 100m 1.35m x 50m Thermal Resistance (R value) W/m 2 K Water Resistance Test (Mason Jar) Pass/Fail Pass N/A Vapour Resistance MNs/g 0.45 to BS 3177* 2500 * NHBC Requirement (Must be below 0.6) BS 4016 Requirement (Must be below 0.6) Reflectashield TF breather membrane has a vapour resistance of 0.45 MNs/g and is below the maximum permitted in BS4016, TRADA and NHBC 0.6 MNs/g. apg5485 The Haugh, Blairgowrie, Perthshire, PH10 7ER. Telephone: (01250) Facsimilie: (01250) insulation@proctorgroup.com

Garage Conversion - Between and Under Joist Applications

Issue 1, August 2013 CI/SfB (2 -) Rn7 (M2) Garage Conversion - Between and Under Joist Applications Flat Roof Insulation Introduction Celotex is the brand leading manufacturer of PIR insulation boards,