Inverted Roofing System

Transcription

1 Insua t i o n First Issue September 2018 Roofing System NEXT GENERATION INSULATION SOLUTION FOR PROTECTED MEMBRANE FLAT ROOFS AND GREEN ROOFS Idea for constructions where a ack of construction depth or space is an issue Optimum performance rigid vacuum insuation pane Insuating performance up to five times better than other commony avaiabe insuation materias Withstands freeze / thaw cycing Compatibe with green roof systems Resistant to the passage of water vapor Idea for new buid and retrofit

2 Introduction Design Considerations The Probem When constructing a roof in new buid situations or repacing a roof in existing buidings there may be a requirement for both ow U vaues / high R vaues and the thinnest possibe roof buid up. For new buid appications, there are increasing reguatory requirements and economic reasons to improve energy efficiency. One of the approaches is to improve the therma performance of the buiding enveope whist keeping the overa construction as thin as possibe. There are aready high performance insuation products avaiabe that wi fufi the majority of these requirements, however in certain areas, for exampe where the design demands it, a new, thinner, product is needed. In refurbishment there is arguaby a greater need to keep roof buid ups as thin as possibe. In certain appications interna space may be at a premium or there may be itte space for instaing new roof insuation, for exampe in buidings with panning height restrictions. The Soution Roofing System has been deveoped to hep sove these probems. Roofing System is an optimum performance next generation insuation soution from Insuation. It comprises rigid vacuum insuation panes with a microporous core which is evacuated, encased and seaed in a thin, gas-tight enveope, giving outstanding therma conductivity, with the thinnest possibe soution to insuation probems. The vacuum insuation panes are accompanied by rigid extruded poystyrene insuation infi panes which can be cut to fit around probem areas such as roof ights or ventiator kerbs. In retrofit appications, the Roofing System provides soutions for areas that previousy coud have remained un-insuated because of insufficient space avaiabe. Design Service Roofing System comprises three eements: panes, infi strips and overay. It comes with a supporting design service which ensures the ratio of the panes to infi strips for each project is maximized. The pane ayout wi be designed quicky and effectivey, ready for cient approva. Each ayout wi iustrate the size, number and ocation of the panes. It wi aso iustrate the size, number and ocation of any infi strips required. For more detais pease contact the Insuation Technica Service Department (see rear cover). Typica Roofing Designs for the Roofing System Figure 1 infi strips In new constructions the Roofing System can significanty enhance U-vaues in areas that woud otherwise be accepted as diminishing the overa therma performance. The high eve of therma efficiency with minima thickness, achieved by the Roofing System provides soutions for appications where a ack of construction depth or space is an issue. 2

3 Specification Cause eement of the Roofing System shoud be described in specifications as:- The roof insuation sha be the Roofing System mm thick: comprising a rigid vacuum insuation pane with a microporous core which is evacuated, encased and seaed in a thin, gas-tight enveope. The product sha be manufactured under a management system certified to ISO 9001: 2008, ISO 14001: 2008, BS OHSAS 18001: 2007, and ISO 50001: 2011 and instaed in accordance with the instructions issued by Insuation Limited. Figure 2: Responsibe Sourcing Roofing System is manufactured under a management system certified to ISO 14001: Sustainabiity & Responsibiity Insuation has a ong-term commitment to sustainabiity and responsibiity: as a manufacturer and suppier of insuation products; as an empoyer; as a substantia andhoder; and as a key member of its neighbouring communities. A report covering the sustainabiity and responsibiity of Insuation Ltd s British operations is avaiabe at Protected Membrane Roofs This iterature describes the use of the Roofing System as a component of protected membrane roofing systems using either a grave or paving sab finish, and as a component of green roof systems. Protected membrane roofing systems pace the insuation above the waterproofing, and offer severa advantages over traditiona warm fat roofs. The waterproofing system can be expected to have a ife in excess of that obtained in an exposed situation, as it is protected from mechanica damage, UV degradation from soar radiation and temperature extremes (both daiy and seasona). The roof is safe from condensation risk. Insuation can be ifted to aow inspection of the waterproofing system. Additiona insuation can be added at a ater date. The instaation of the insuation is not weather dependent. wind upift warranty is avaiabe. 3

4 Typica Constructions Concrete Deck with Paving Sab Baast Dense Concrete Deck with Suspended Ceiing Green Roofs Intensive / Semi-intensive Green Roof Covering with No Ceiing Paving sabs on supports Fiter fabric Damp course (DPC) Cover fashing Kootherm K8 Cavity Board taken up as high as the fat roof insuation upstand Intensive / semi-intensive green roof covering Substrate to depth required Fitration ayer Drainage ayer Fiter fabric Drainage mat insuation ayer Protection ayer Root barrier / protection ayer(s) Waterproofing Waterproofing Screed to fas Concrete deck Protection ayer infi strip Screed to fas Concrete deck Figure 2 Figure 4 Concrete Deck with Grave Baast Dense Concrete Deck with no Ceiing Damp course (DPC) Cover fashing Grave Baast Kootherm K8 Cavity Board taken up as high as the fat roof insuation upstand Aquazone insuation ayer Waterproofing Screed to fas Concrete deck infi strip Drainage Mat Figure 3 4

5 Sitework Green Roofs Benefits Green roofs, are an aternative to the standard protected membrane roof that offer many advantages but require precise design and detaiing. Specificay they can: reduce urban isand heat effect; provide a habitat for widife; create usabe areas for recreationa activities; retain rainfa thus prevent water surges into the drainage system; improve sound insuation; and provide a visuay more attractive finish than protected membrane roofs with grave or paving sab baast. Types of Green Roof Green roof systems can be divided into three main categories. Extensive green roofs comprise a reativey shaow growing medium and ow maintenance vegetation such as grass. They are ightweight, simpe to design, construct and maintain, but shoud not be considered suitabe for reguar traffic or recreationa activities. Extensive systems are especiay usefu in creating green areas for both ecoogica and aesthetic reasons. Semi-intensive green roofs comprise a deeper growing medium and vegetation such as grass, perennias and shrubs. They are designed to be more garden ike and to accommodate imited access for maintenance and recreation. Intensive green roofs have a much deeper growing medium and a wider variety of fora, incuding grass, shrubs and smaer trees. They are comparabe with norma gardens in respect of maintenance, and can be used for recreation activities. The sef weight of the system can be very high, due to the increased soi depth. Carefu design and detaiing of both roof types is important and incudes the foowing eements. Drainage Layer The drainage ayer normay consists of either: a ayer of washed grave 8/16; expanded cay; or a speciaist egg carton or casteated pastic (HDPE) sheeting; a overaid with a fitration membrane. The drainage ayer aows the rapid remova of excess rainwater from the roof, thus avoiding saturation of the soi and the associated increase in weight. Moisture Retention Layer The imited depth of soi, especiay in the extensive type of roof, may require the use of a moisture retention ayer to ensure sufficient water is avaiabe for the vegetation. Root Barrier The roots of growing pants can seriousy damage waterproof membranes, by growing into any sma cracks, ap joints or other discontinuities. A root barrier may be formed by a separate cap sheet of poythene, or bitumen fet. The cap sheet is either adhered or oose aid onto the waterproof membrane, with a joints seaed by bonding or weding, and must be continued up vertica faces of upstands. Waterproofing Prior to instaing the Roofing System, it is essentia to ensure that the waterproofing system has been instaed correcty and that the roof is watertight and cean. The surface of the waterproofing shoud be smooth, fat and free from projections. Singe-py membranes, in particuar, need carefu attention to ensure that there has been no damage from foowing trades, and that puncturing from beow the membrane (from nai heads or debris) cannot occur. If a singe-py membrane or mastic asphat waterproofing system has been instaed, a non-woven poyester feece separation ayer shoud be aid on top of the membrane prior to the instaation of the insuation. Growing Medium In its simpest form this is norma soi. Speciaist mixtures are avaiabe, incorporating expanded cay and ava rock, which form the growing medium and have fitration, drainage and moisture retention functions. 5

6 Sitework Insuation Boards An optiona protection ayer may be used under the Roofing System. For further information pease contact the Insuation Technica Service Department (see rear cover). panes shoud be aid break bonded where practica, with joints ighty butted. There shoud be no gaps at abutments. Where runs of the pane do not accuratey fit the dimension of the roof, the use of infi strips is required to make up this difference. Each infi strip is to be the same thickness as the panes. overay shoud be aid as soon as possibe to avoid exposure of the to direct foot traffic. At the perimeter of the roof and where upstands or any penetrations (e.g. drainage outets) are present, infi strips shoud be aid abutting these areas, to take account of buiding toerances. A minimum distance of 12 in shoud be maintained between the top of the insuation upstand and the bottom of the horizonta roof insuation. Roofing System can be aid in any weather but care must be taken in windy conditions. Wheeed / Foot Traffic panes shoud not be directy waked on. A protective foot or craw board shoud be used during the instaation process. infi strips and the overay may be waked on. Genera Roofing System shoud not be used in association with sovent-based adhesive systems. Roofing System shoud not be exposed to open fames or excessive heat. Cutting panes shoud not be cut or penetrated. The substrate must be cean, dry and eve, and free of sharp objects or edges. Cutting of the infi strips shoud be carried out either by using a fine toothed saw, or by scoring with a sharp knife, snapping the board over a straight edge and then cutting the facing on the other side. Ensure accurate trimming of the infi to achieve cose-butting joints and continuity of insuation. Avaiabiity Pease contact Insuation for avaiabiity of the Roofing System. Packaging and Storage The packaging of the Roofing System shoud not be considered adequate for outdoor protection. Roofing System shoud be stored inside a buiding and raised off the foor. Heath and Safety Insuation products are chemicay inert and safe to use. A Safety Information Data Sheet for this product is avaiabe from the Insuation website Warning do not stand on or otherwise support your weight on this product uness it is fuy supported by a oad bearing surface. Pease note that the refective surface on this product is designed to enhance its therma performance. As such, it wi refect ight as we as heat, incuding utravioet ight. Therefore, if this pane is being instaed during very bright or sunny weather, it is advisabe to wear UV protective sungasses or gogges, and if the skin is exposed for a significant period of time, to protect the bare skin with a UV bock sunscreen. 6

7 Product Detais Composition panes comprise a rigid vacuum insuation pane with a microporous core which is evacuated, encased and seaed in a thin, gas-tight enveope. infi strips and overay comprise a high performance rigid extruded poystyrene insuation. Standards and Approvas panes are manufactured to the highest standards under a management system certified to ISO 9001: 2008 (Quaity Management Systems. Requirements), ISO 14001: 2004 (Environmenta Management Systems. Requirements) and OHSAS 18001: 2007 (Heath and Safety Management Systems. Requirements). Product Data Tabe CCRR-1018 C #: CERTIFIED TO: ASTM C1667 ASTM C165 ASTM D2126 Property Test Method Resut Genera Nomina Thickness (in / mm) / Standard Dimensions Width (in / mm) Length (in / mm) Nomina Pane Mass (bs per sq. ft. / kg per m) 20 mm thickness 25 mm thickness 30 mm thickness 35 mm thickness 40 mm thickness Compressive Strength, Min. 10% deformation Dimensiona Stabiity ( C, 97% RH) 20 mm thickness 50 mm thickness ASTM C165 ASTM D2126 ength width ength width / / / / / / / 8 25 % change Density The density of fas within the range of pcf / kg/m 3 when tested to BS EN 1602: 2013 (Therma insuating products for buiding appications. Determination of the apparent density). Service Temperature is suitabe for use in temperatures of 40 to +176 F / 40 to +80 C. Durabiity If instaed correcty and protected from damage and penetration, the Roofing System can provide reiabe ong-term therma performance over the ifetime of the buiding. Resistance to Sovents, Fungi & Pests Roofing System shoud not be used in association with sovent-based adhesive systems. Damaged boards or boards that have been in contact with sovents or acids shoud not be used. The insuation core and facings used in the manufacture of the Roofing System resist attack by moud and microbia growth, and do not provide any food vaue to pests. * Contact Insuation for avaiabe non-stock sizes. 7

8 Therma Resistance ASTM C1667 (Standard Test Method for Using Heat Fow Meter Apparatus to Measure the Center-of-Pane Therma Transmission Properties of Vacuum Insuation Panes) is the ony test method designated by ASTM to be used specificay for testing center pane therma resistance of Vacuum Insuated Panes. ASTM C1667 further states that Vacuum Insuated Panes fa outside the scope of test method ASTM C518. A of the beow stated therma resistance vaues are based on Certified ASTM C1667 testing. Therma resistance (R vaue) of the panes of the Roofing System varies with thickness and is cacuated by dividing the thickness of the pane by its therma conductivity. ASTM C1667 Center Pane Therma Resistance Properties Insuant Thickness Therma Resistance (in) (mm) (R vaue) Refer to Insuation for current stock and non stock sizes. Cacuated Edge Effect Therma Resistance Properties* Insuant Thickness Therma Resistance (in) (mm) (R vaue) * Based on ASTM C1667 Therma Resistance Vaues. Edge effect R-vaues vary based on pane size. The isted edge effect R-vaues in the tabe are based on the average edge effect R-vaues from six of the most commony used pane sizes. Refer to Insuation for current stock and non stock sizes. 8

9 Insuation Company Detais Insuation LLC is part of the Group pc., one of Europe s eading construction product manufacturers. Group was formed in the ate 1960s and is a pubicy traded group of companies headquartered in Kingscourt, County Cavan, Ireand. Insuation LLC, headquartered in Atanta, GA, is a eading manufacturer in energy efficiency and moisture management products, offering high performance insuation, buiding wraps and pre-insuated HVAC ductwork. Products & Appications Insuation LLC has a vast product range that incudes optimum, premium and high performance rigid insuation products and moisture management products. Insuation LLC products are suitabe for both new buid and renovation in a variety of appications within both residentia and non residentia buidings. Insuation for: Fat Roofs (XPS & VIP) Green Roofs (XPS & VIP) Cavity Was Soid Was Wood and Stee Framing Insuated Cadding Systems Insuated Render Systems Beow Grade Basement Was Foors Soffits Ductwork Further Soutions: Kootherm Cavity Coser KooDuct Pre Insuated Ducting Buiding Wraps Insuation Product Benefits Vacuum Insuation Pane (VIP) With an R-vaue of 28 per inch, these products provide an insuating performance that is up to five times better than other commony avaiabe insuation materias. Provides high eves of therma efficiency with minima thickness. Over 90% (by weight) recycabe. Kootherm K range Products Higher R-vaue per inch than any commony used insuation Each product achieves the required fire performance for its intended appication. ASTM E 84 rating of 25/20 (fame/smoke). Manufactured with a bowing agent that has zero ODP, ow GWP, HCFC and CFC free. Products Rigid extruded poystyrene insuation (XPS) for use as genera purpose insuation for roofing, wa and foundation appications requiring a minimum compressive strength. R vaue of 5.0 per inch of thickness. Continuous Insuation (Ci) for above grade was, as we as beow grade was and foors. Provides an extra barrier against moisture infitration. Each product achieves the required fire performance for its intended appication. A Products Their cosed ce structure resists both moisture and water vapor ingress a probem which can be associated with open ce materias such as minera fiber and which can resut in reduced therma performance. Unaffected by air infitration a probem that can be experienced with minera fiber and which can reduce therma performance. Safe and easy to insta. If instaed correcty, can provide reiabe ong term therma performance over the ifetime of the buiding. 9

10 Contact Detais Saes and Technica Support Te Fax emai info@kingspaninsuation.us web site Insuation LLC beieves the information and recommendations herein to be accurate and reiabe. However, since use conditions are not within its contro, Insuation LLC does not guarantee resuts from use of such products or other information herein and discaims a iabiity from any resuting damage or oss. No warranty, express or impied, is given as to the merchantabiity, fitness for particuar purpose, or otherwise with respect to the products referred to. For more information on specific buiding product recommendations and product data, contact your Insuation LLC representative. For the most current instaation guideines and compiance information go to BRO-OPTIMR-IRMA 1809 Insuation LLC 2100 RiverEdge Parkway, Suite 175, Atanta, Georgia info@kingspaninsuation.us the G Device and the Lion Device are Registered Trademarks of the Group pc in the US, Canada and other countries. A rights reserved. GreenGuard, Kootherm and KooDuct are Registered Trademarks of the Group pc in the US. A rights reserved. OPTIM-R is a Trademark of the Group pc.