INNOVATION BUILT ON EXPERIENCE PROSPAN WRS warm roof system ACOUSTIC INSULATION CONSTRUCTION MEMBRANES GEOSYNTHETIC ENGINEERING METAL ROOFING TILES THERMAL INSULATION TIMBER CLADDING VIBRATION ISOLATION

INNOVATION BUILT ON EXPERIENCE PARTNERSHIPS IN ACTION The History The A. Proctor Group Ltd, has been involved in thermal insulation solutions for over 40 years. They were instrumental in the warm roof concept and have considerable experience in the application of warm pitched roofs and the associated risks. Working closely, and in conjunction with Kingspan Insulation, the partnership has developed ProSpan Warm Roof System (WRS) to provide technically advanced solutions to warm pitched roofing utilising the most modern of technologies and years of experience. The Warm Roof Concept As thermal insulation...

CONTENTS Partnerships in Action Introduction to Warm Roof System Concept PR Nail Calculation Form

WARM ROOF SYSTEM Warm Roofs Traditionally the UK Construction Industry has not utilised the roof space and has specified cold roofs requiring ventilation above the insulation. This has led to a number of technical risks including condensation in the roofspace. If the ventilation is blocked up or inadequately specified; condensation on the underside of the nonpermeable underlay; or in worst cases, mould growth on the rafters has been evident. Increased thermal insulation required in roofs has led to even colder roof spaces, thereby increasing the risk of condensation in these types of roofs. Pipes...

PROSPAN WRS Prospan Properties The ProSpan WRS is a high performance CFC/HCFC free rigid polyisocyanurate insulation of typical density 32kg/m3. Manufactured to BS EN ISO 9001:2000 The board is faced both sides with low emissivity foil facing material, increasing the thermal efficiency of the adjacent airspaces. Health and Safety ProSpan Warm Roof System is chemically inert and safe to use. A leaflet on this topic which satisfies the requirements set out in the Control of Substances Hazardous to Health Regulations 1988 (COSHH) is available from our Technical Services Department. Thermal Conductivity...

ENGLISH DETAILS Tiles Tile Battens Roofshield Counter Battens Prospan Roof window Cut Prospan to fit tight against roof window trimmers and seal gap filler Cut Prospan to line of valley. Form rebate to set over valley boards. Gutter lining on separating layer.

SCOTTISH DETAILS Slates No Tile Battens Roofshield Softwood Sarking Rebate edges of Prospan sit on rafters Use insulation to ensure continunity of insulation Cut Prospan to fit tight at ridge and seal with gap filler

PR NAIL CALCULATION FORM PR Nails are used as structural batten fixing, normally being fixed through the counter-batten, the insulation sarking and then a minimum of 35mm (preferably 50mm) into the rafters. Please photocopy the form below, fill in the answers and fax back to 01250 872727. The density of fixing (the number of fixings per M2) must be enough to resist both the wind suction and the sliding load. Alternatively you will find an online form at www.proctorgroup.com Date Contact Name Company Telephone Facsimile E-mail Counter-Batten Thickness: Recommended 25mm thick Insulation Thickness:...

ROOFSHIELD Introduction It is important in warm roof applications that the pitched roof underlay is breathable. Roofshield is part of the ProSpan WRS and provides excellent moisture vapour permeability whilst affording secondary protection while the primary covering is installed. Functions The underlay must perform four functions: 1. Secondary drainage layer Wind blown rain and snow which finds its way below tiles and slates, or through side laps in metal sheets, drips onto the continuous underlay and drains safely down into the gutter and out of the building. Roofshield performs this function....

Construction Type Warm pitched roof Internal surface emissivity: Element Description Pitched roof ceiling at rafter line - Roof with ProSpan and Roofshield External surface emissivity: High Outside Surface resistance 3 Cavity - tiling battens 25.0 R-value 5 Cavity - counter battens 25.0 R-value 0.160 6 ProSpan WRS - over rafters 60.0 0.023 2.609 7 ProSpan WRS - between rafters 60.0 0.023 2.609 8 Cavity - base of rafters 40.0 R-value 0.340 0 Inside surface resistance - - 0.100 U-value: Combined Method: O.I8W/m2K (Calculated in accordance with BS EN ISO 6946 *this substitutes for Rse and the resistance...

How The Profile Graph Works Ensure any condensation risk is above the breather membrane Condensation Risk Analysis (no account taken of thermal bridges) Internal / External Conditions: 20.0°c @ 55.0%RH / -5.0°c @ 95.0%RH Buildup period 3 I days Interface Dewpoint Vapour Saturated Outside Surface resistance -4.8 2 Tile including batten space -4. 4 Cavity - counter battens -2.6 5 ProSpan WRS - over rafters 6.7 6 ProSpan WRS - between rafters 17.8 7 Cavity - base of rafters 19.3 9 Inside surface resistance Annual Condensation Condensation Risk Analysis (no account taken of thermal bridges Internal...

INNOVATION BUILT ON EXPERIENCE The Haugh Blairgowrie Perthshire PH10 7ER telephone 01250 872 261 fax 01250 872 727 email [email protected] www.proctorgroup.com apg5752 ACOUSTIC INSULATION CONSTRUCTION MEMBRANES GEOSYNTHETIC ENGINEERING METAL ROOFING TILES THERMAL INSULATION TIMBER CLADDING VIBRATION ISOLATION