Tiled Roof Extension System Overview and Design Guide OCTOBER 2013 V1

Transcription

1 Tiled Roof Extension System Overview and Design Guide OCTOBER 2013 V1

2 realroof by Ultraframe is a tiled roof extension solution. It is a packaged solution, off site manufactured and which meets part L of the Building Regulations in England and Wales and part J of the Scottish Regulations. realroof has LABC Registered Details which assist with demonstrating compliance to all relevant parts of the Building Regulations. realroof accommodates all popular forms of slates, tiles and metal sheet products. As it is factory pre-fabricated, it is speedy to install on site saving a number of days when compared to traditional on site roof fabrication. The packaged solution is a SIPS based product and the roof structure is delivered in one package only fascias/soffits, tile coverings and plasterboards have to be sourced locally. See the illustrations on the page opposite to see the three core system elements. CONTENTS Overview 3 Extension types: 4-8 Lean-to, Hipped 4 Lean-to, Gabled 5 Georgian duo / Gable duo 6 Georgian/ Gable duo span sizing charts 7 Double Ended 8 Post support / requirements 9 Beam cross sections Box gutter, situation 10 On masonry & on frames 11 Typical Installation sequence Windows all round 12 Brick work all round 13 Combination brickwork and windows v1 14 Combination brickwork and windows v2 15 Pricing for realroof 16 Completing the order form Order form 17 Notes/guidance 18 realroof can be supported in a number of ways ; - on masonry walls and piers - using it s own structural support posts (when piers are less than 600mm or full ribbon windows are used). When constructed on its own support posts, these can be cloaked with pre-formed insulation slab and Loggia aluminium powder coated claddings. realroof works across a number of extension styles, as the System Guide you are reading makes clear. For assistance with realroof design/specification please contact the Technical Support Team on or techsupport@ultraframe.co.uk * It is the responsibility of Retailers/Dealers to secure Building Regulations and Planning permission with potential customers. IMPORTANT The installer is responsible for ensuring that where realroof is supported by means such as masonry or timber frame walls rather than realroofs own support posts/beams, the structure provides enough lateral support and resistance to wind uplift. Further guidance can be obtained through realroof s technical documentation/guides we strongly recommend the use of the real roof structural support posts/ beams Ultraframe cannot accept responsibility for the overall structural stability of an en extension utilising realroof. For further guidance please contact the Technical Support Team on or techsupport@ultraframe.co.uk 2

3 OVERVIEW The set out information in this guide is based around 300mm wide cavity walls. Product defi nition realroof is a tiled roof extension solution. In summary, it is a packaged solution, off site manufactured for rapid assembly and compliance with relevant Building Regulations. realroof is classed as a warm roof and gives a vaulted/loft type ceiling. There are three major elements to realroof; A patented polystyrene bead filled box eaves beam that forms the soffit structure - approx 450mm front to back depth. 2. A hidden structural aluminium framework for hips, ridge and starter bars. 3. Mechanically fixed Structural Insulation Panels (SIPs) are attached to the box eaves and structural framework. Once it is counter battened and roofing membrane fixed (both supplied) the selected slates/tiles and battens are attached in the usual manner. (These items are not supplied) Key performance criteria - The product works with ribbon glazing, full masonry walls, brick piers, on its own structural posts (which can be insulated and clad with Loggia elements). - The standard soffit projects approx 150mm beyond external masonry box eaves beam is approx 440mm front to back depth. - Pitch range suits all commonly available tiles/slates/metal roof coverings pitch range: Always check with the roof covering manufacturer on the minimum pitch for your selected tile/slate brand. - System U value using 190mm SIPS panels is 0.16W/m2 C - it is feasible to achieve 0.12W/m2 C by the incorporation of additional slab insulation at vaulted ceiling level. - The system can incorporate roof windows e.g. Velux - 2 distinct opening size choices are possible. - Cut outs for roof windows must be selected at point of ordering. Under no circumstances can this operation be done on site. U-Design U-Design is a piece of design and configuration software that exclusivly specifies realroof extensions. As well as visualising and pricing upon entry of the customers postcode it checks the wind and snow loads at the exact location to ensure compliance with Building Regulations. 3

4 HIPPED LEAN-TO realroof Full wok or minimum 60mm Panel Projection P Between box eaves beam and wall Projection Box Beam Width W Between box beams 440mm Maximum Size Limitations WITHOUT Roof Windows Opening Dimensions 190 Deep Panel ROOF PITCH WIDTH (mm) PROJECTION Unlimited Unlimited 3200 Maximum Size Limitations WITH Roof Windows Opening Dimensions 190 Deep Panel ROOF PITCH WIDTH (mm) PROJECTION

5 LEAN-TO realroof Panel Projection P Projection Box Beam Width W 440mm Maximum Size Limitations WITHOUT Roof Windows Opening Dimensions 190 Deep Panel ROOF PITCH WIDTH PROJECTION Unlimited Unlimited 4000 Maximum Size Limitations WITH Roof Windows Opening Dimensions 190 Deep Panel 240 Deep Panel ROOF PITCH WIDTH (mm) PROJECTION PROJECTION

6 GEORGIAN realroof GABLE realroof Projection P Between box eaves beam and wall Projection P Width W Between box beams Width W Between box beams The maximium projections shown are utilising the standard realroof post. If further restraint is provided by supporting masonry larger projections are possible.please contact the Technical Support Team on for guidance. The insertion of roof windows can reduce projection depending upon size, position and frequency. 6

7 SIZE LIMITATIONS Projection is between box eaves beam and wall, width is between box eaves beams MAX WIDTH UPTO 790mm WIDE ROOF WINDOW MAX WIDTH UPTO 960mm WIDE ROOF WINDOW MAX WIDTH UPTO 1150mm WIDE ROOF WINDOW Projection (m) Width (m) MAX WIDTH UPTO 670mm WIDE ROOF WINDOW MAX WIDTH UPTO 790mm WIDE ROOF WINDOW MAX WIDTH UPTO 960mm WIDE ROOF WINDOW MAX WIDTH UPTO 1150mm WIDE ROOF WINDOW Projection (m) Width (m) MAX WIDTH UPTO 670mm WIDE ROOF WINDOW MAX WIDTH UPTO 1150mm WIDE ROOF WINDOW Projection (m) Width (m) 7

8 DOUBLE ENDED realroof A 265mm box gutter must always be specified in these situations (see page 10) Projection P Between box eaves beams (boxgutter excluded) Width W Between box beams Maximum Size Limitations TBC 8

9 SUPPORT REQUIREMENTS The roof can be constructed with a variety of post and brick pier combinations. The critical criteria are 1. Support at each corner 2. Maximum unsupported span 4m 3. Maximum beam length 6m, joint to be supported by a post or positioned mid pier 4. Joints to be minimised Guidance on brick pier sizing As the UK s dominant building material it can wrongly be assumed they are suitable for all situations. Bricks largely rely on their mass to provide stability particularly given the relatively uncontrolled way in which mortar is mixed on site. Brick piers can fail in two ways 1) through flexure where wind is hitting the wall head on, bending the wall between the ground and the roof and 2) is lateral stability where the wall is supporting the adjacent panel. For guidance on the construction of piers, we have used a wind speed of 23m/s at an elevation of 150m which covers the majority of England and Wales and part of Scotland as the default. This is the guidance on brick pier construction, given the rules above. Where the construction is brick and block alone the minimum size of pier is 787mm (3.5 bricks). Where a windpost is incorporated such as an Ancon WP1 or WP3 this prevents the flexural failure and the pier can be reduced to 562mm (2.5 bricks). At this point the lateral stability becomes the limiting factor and a portal leg with secure fixings to the foundations is required, such as the realroof standard posts. Other solutions are possible but it is necessary to consult a structural engineer for what is most appropriate for conditions at any particular project. Also, if wind speed is above 23m/s and/or at an elevation greater than 150mm MIN FULL HEIGHT PIER SIZES ALLOWED WITHOUT POSTS Min 787mm (3½ brick) Min 787mm (3½ brick) Min 787mm (3½ brick) ABUTMENT BRICKWORK PIER INTERMEDIATE BRICKWORK PIER CORNER BRICKWORK PIER Min 787mm (3½ brick) Max clear span between piers 4000mm 9

10 10 SECTION VIEW - BOX GUTTER

11 SECTION VIEW - BRICKWORK SECTION VIEW - WINDOW FRAME 11

12 QUICK INSTALLATION GUIDE - WINDOWS ALL ROUND Your finished build will look like this. Installation sequence: 1. Footings and Posts 2. Box Beams, Ridge and Bars Panels, Brickwork and Slab

13 QUICK INSTALLATION GUIDE - BRICKWORK ALL ROUND Your finished build will look like this. Installation sequence: 1. Footings 2. Brickwork and Slab 3. Box Beams, Ridge and Bars 4. Panels 13

14 QUICK INSTALLATION GUIDE - COMBINATION BRICKWORK AND WINDOWS - VERSION 1 Your finished build will look like this. Installation sequence: 1. Footings and posts 2. Brickwork and slab box beams, ridge and bars 4. Panels

15 QUICK INSTALLATION GUIDE - COMBINATION BRICKWORK AND WINDOWS - VERSION 2 Your finished build will look like this. Installation sequence: 1. Footings and brickwork 2. Posts 3. Box Beams, Ridge and Bars 4. Brickwork (stage 2), slab and panels 15

16 RETAILER PRICING Retailer Pricing - prices are Nett including delivery, excluding VAT EDWARDIAN HIPPED LEAN-TO GABLE BASIC LEAN-TO STYLES WITH HIPS STYLES WITHOUT HIPS inc & over 25m² Price /m² by total roof plan area Based upon fascia to fascia size To achieve 0.16 u value Inc 20m² upto 24.99m² Inc 15m² upto 19.99m² Less than 15m² Adjustable Corner Post 171 Adjustable InLine Post 163 Posts & Beams (Mill finish aluminium) Abuttment Post 96 Gable Post (LH or RH) 146 Gable Beam (Powder Coated - Std colour) PER METER Bespoke POWDER COATED Structural Post Price. (Price for post plus powder coat) PER METER Cut out & Prep for roof window (eg. Velux) 107 Hipped back styles and boxgutters POA Leadtime: Up to four weeks from receipt of purchase order Roof prices include: Insulated structural ring beam 190mm Insulated structural roofing panels Aluminium sub structure and associated fixings Breathable roofing membrane and counter battens Site Delivery (UK mainland only) Specific Exclusions: External roof finish, trims & flashings (eg. Tiles and associated flashing & weathering details) Tile battens and nails Verge finishing trims Posts & Gable beams Prices effective from September 25th All prices are sterling and exclude VAT. This publication is for guidance only. The Ultraframe computer system is the final arbiter on price. 16

17 V5 APR 2013 ORDER QUOTE ENQUIRY PLEASE SKETCH HERE - Mark window, door and column positions/types PLAN VIEW ACCOUNT No. Company Name Order Number Job Reference Company Contact FRONT ELEVATION Telephone No. Fax No. Delivery Address Delivery Date Req Quotation Ref Site Postcode HOW TO PLACE AN ORDER FOR REALROOF 1. Sketch plan & elevations 2. Mark the positions of all walls, brick piers, windows/doors etc 3. Mark the preferred positions of any roof windows. 4. Upon placement of your realroof order, an order confirmation is generated which must be signed and faxed back. LEFT ELEVATION RIGHT ELEVATION CUSTOMER NOTE: Please carefully read the System Overview and Design Guide before filling in order details SPECIFICATION - standard Minimum system is 15 and max is 45. Check minimum tile pitch for your choice of slate/tile with your nominated tile manufacturer. SPECIFICATION Structural posts - mark positions on drawings above Soffit depth approx 150mm (from external face of brickwork) Assumed cavity wall construction of 300mm IMPORTANT The installer is responsible for ensuring that where realroof is supported by means such as masonry or timber frame walls rather than realroofs own support posts/beams, the structure provides enough lateral support and resistance to wind uplift. Further guidance can be obtained through realroof s technical documentation/guides we strongly recommend the use of the real roof structural support posts/beams Ultraframe cannot accept responsibility for the overall structural stability of an en extension utilising realroof. For further guidance please contact the Technical Support Team on or techsupport@ultraframe.co.uk PLEASE SIGN BELOW & FAX BACK TO (quotes) or (orders) SIGNED DATE 17

18 ple sa ple sample ORDERING PROCEDURE & ORDER FORM Creating a part code for each column you wish to order Complete steps 1-6 to generate a part code and then insert onto the order form in the boxes provided. Remember to letter each column code on your sketch against the code reference - eg. position A, position B etc Example 6 part code Step 2. Step 2. OCL 25 Step Step 2. BPL Step Step 4. CRN Step 5. ST Step 6. W ple sample samp ple sample sample ple sample sample ple sample sample ple sample sample ple sample sample ple sample sample 18 *NB. INSERT RAL NUMBER FOR A CUSTOM COLOUR COL 2500 Step 1. COLUMN POSITION STYLE CORNER INLINE ABUTMENT LEFT If OCL or OCS enter cill height here (in mm) If COL or COS enter cladding length here (in mm) Default is 2500mm ABUTMENT RIGHT CODE 90 IN ABL ABR Step 2. SIZE AND BASE FINISH HEIGHT BASE FINISH LARGE CODE SMALL CODE FULL HEIGHT AND DWARF FULL HEIGHT ONLY BRICK PLINTH CAP ON CILL (NOT ALLOWED FOR STRUCTURAL) CLADDINGS ONLY (MAX 2500MM) COLUMN PLINTH CORNER INLINE ABUTMENT CORNER - FULL HEIGHT CORNER - DWARF ONLY INLINE ABUTMENT CORNER INLINE ABUTMENT CORNER INLINE ABUTMENT* BPL CORNER ONLY BPS OCLFP OCL CORNER - FULL HEIGHT CORNER - DWARF ONLY INLINE ABUTMENT COL (INSERT LENGTH ONLY CORNER ONLY IF CUSTOM) OCSFP OCS COS (INSERT LENGTH ONLY IF CUSTOM) CPL CORNER ONLY CPS *NB. FOR ABUTMENT LEFT AND RIGHT ORDER INLINE AND CUT DOWN ON SITE Step 3. HEIGHT (mm) CUSTOM* *NB. FOR SPECIALS OVER 2500mm CONTACT ULTRAFRAME CORNICE ONLY (Standard eaves) CLASSIC WHITE CORNICE ONLY (Super duty eaves) CLASSIC WHITE (DEEPLAS) Step 4. TOP FINISH Step 6. COLOUR PURE CREAM CILL ONLY (Standard or super duty eaves) LANDMARK GREEN CORNICE WITH CILL (Standard or super duty eaves) CRN CRNSD CILL CRNCILL LARGE CORNER, FULL HEIGHT COLUMN ONLY* NOT ALLOWED ON CILL ST Step 5. STRUCTURAL OTHER COLUMN TYPE LEAVE BLANK *NB. COLUMN SUPPLIED WITH STRUCTURAL BRACKETS AND FIXINGS URBAN GREY *CUSTOM RAL NO. W D CR GN GR eg HOW TO PLACE AN ORDER FOR COLUMNS A 1. Sketch plan and elevations all angles must be 180/90 o. B 2. Mark the positions of 90 o columns, columns at host wall and any in-line columns. C 3. Letter each column position. Use the stock code generator and place the code next to each corresponding letter on the column code section of the form. D 4. Upon placement of your Loggia column order, an order confirmation is generated which must be signed and faxed back. The order confirmation will clearly show the overall opening sizes to allow frame size calculation / ordering. C Order form example mple sample A sample le B

19 tiled roof extension realroof is available in 4 main styles Lean to Gable Hipped back Double ended / freestanding or attached realroof can be your extension roof of choice - Ultraframe is creating a unique UK network of builders / installers to stimulate the market 19

20 Job No.: 2971 realroof v1 10/13 It is Ultraframe s policy to continually seek to improve its products, processes and services, and we reserve the right to change specifications without prior notice. Ultraframe is a trading name of Ultraframe (UK) Limited. Ultraframe (UK) Ltd, Salthill Road, Clitheroe, Lancashire. BB7 1PE