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Innovation for Sustainable Homes
Project shown: Chevreuse
Innovative, economical designTapered leading edgeVariable gauge30 year durability guaranteeCompatible with Imerys PV modules
Large format interlocking clay roof tiles
The Imerys Double HP20 Clay Tile
Slat
e
Cl/Sfb 47 Ng 2
Combining small format aesthetics with large format economy
The Imerys Double HP20 Clay Tile
The result of imaginative product design and state of the arttechnology, the Imerys Double HP20 combines the appealingaesthetics of a small format tile with the economy and ease
of installation of a large format model.
High visual appeal is ensured by the presence of a discretelytapered leading edge and exceptional water tightness is assured on roof pitches as low as 17.5° thanks to high
performance double interlocks.
A large, �at, elegant clay tile, the Double HP20 has a thin, taperedleading edge. It is laid broken bonded and is supported by acomprehensive range of matching �ttings and accessories.With an impressive coverage of only 9.5 tiles per m
2, the Double
HP20 combines a variable gauge with a choice of nailing positions to deliver an outstanding tile with real speed and economy of installation.
FeaturesThe Double HP20Quantity per pallet 240 tiles Coverage 9.5 per m 2 @ 250mm gauge Nominal variable gauge 225-250mm Overall length 330mm Overall width 460mm Working width 418mm Minimum headlap 80mm Unit weight 4.3kg
Weight per m2 41kg @9.5 m2 Minimum roof pitch 17.5° Batten coverage m2 4.00 l/m @ 250mm Batten sizes 38 x 25mm rafter centres 450mm 50 x 25mm rafter centres 600mm
To overcome any minor shade variation inherent in the �ring ofnatural materials we recommend that you mix the products on site.The colours shown here are colour reproductions and are shown asa guide. Product samples are available on request.
Colours
Burnt Red (034) Chevreuse (026)
Slate (011) Terre de Beauce (099)
DOUBLE HP20 SECTION
Ref 209
Nail size 50 x 3.35mm Aluminium ring shank clout head
Technical Data
to
to
to
to
≈ 227m
m
≈ 225
to 25
0mm
≈ 225
to 25
0mm
≈ 225
to 25
0mm
≈ 70m
m
An extensive range of accessories covering all roo�ng needs
Double HP20 Accessories and Fittings
Complementary Accessories
Ref 209.01Half Tile Double HP20
Ridge & Hip Accessories
Verge Accessories
Ref 209.02Quarter Tile Double HP20
Ref 209.20Ventilating TileDouble HP20
Pipe Terminal Ref 1000Cowl for Pipe Collar Tile
Ref 1001/1003Lanterns
Ref 209.42/209.41Double HP20Independent VergeTile (Left)/(Right)
Ref 209.72/209.73Double HP20 Half Tile CloakedVerge (Left)/(Right)
Ref 209.74/209.75Double HP20 Quarter Tile CloakedVerge (Left)/(Right)
Ref 724Monoridge(17.5° - 25°)
Ref 824Ornamental RidgeEnd, Spigoted
Ref 758Gothic Hip, 400mm Cover
Ref 863Gothic Hip Foot,400mm Cover
Ref 869Half RoundInterlockingFinishing Ridge
Ref 718Half Round Non-interlocking Ridge
Ref 209.30Pipe Collar TileDouble HP20
Ref 710Angular InterlockingRidge/Hip
Ref 859Angular InterlockingRidge/Hip Foot End
All Double HP20 tiles are compatiblewith Imerys integrated PV systems
The unique combination of Imerys natural clay roof tilesand Integrated PV System is backed by an industry-leading triple guarantee covering tile durability,aluminium frame corrosion and watertightness and PVPerformance (30 years). This unique guarantee fromEurope’s leading clay rooftile manufacturer o�ers futurepiece of mind for a variety of projects.
Ridge & Hip Accessories
Ref 807Half Round Ridge Edge Cap
Ref 809Ornamental Ridge Edge Cap
Ref 801Angular Ridge End Cap
Ref 805Monoridge End Cap (Right)
Ref 806Monoridge End Cap (Left)
Ref 901-903Three Way Junctions
Ref 716OrnamentalInterlocking Ridge,400mm Cover
Ref 717Half RoundInterlocking Ridge,400mm Cover
Ridge & Hip Accessories
Ref 906-908Four Way Junctions
Ref 983/984Decorative Finials
PV Modules
Dry Fix Option for Interlocking Ridge and Hips
Roof Ventilation should comply with building regulations and thecontrol of condensation on buildings outlined in BS5250:2002 andapproved document C2: 2004.The level of ventilation depends rstly on the roof design, cold orwarm roof construction, the type of membrane being used vapourpermeable/breathable or impermeable underlays, roof pitchesabove or below 35° or roof spans that exceed 10 metres.As a guide for most situations ventilation should be introduced ateaves or low level of 10,000 or 25,000 mm2/m and 5,000mm2/mat ridge or high level, with spacings at 1 or 2 metres respectively.Imerys provide two continuous dry vent ridge options, Uniroll and Air-Flex, also independent in line concealed upvc ridge and tile ventilatorswhich all have large net free ventilation area :10,000mm2.
Low Line Ridge Vent10,000m2
Low Line InterlockingRidge Vent10,000mm2
Tile VentCapacity 10,000mm2Minimum pitch 17.5°Spacing centres to achieve ventilation area of 5,000mm 2/m:2.0 metres or 1.0 metre centres for 10,000mm 2/mMinimum roof pitch: 17.5°
Ventilation Options
Faster, cleaner, more ective solutions for your roof
Double HP20 Dry Fix and Ventilation
Installation GuidelinesDouble HP20 clay tiles should, in accordance with good working practice, be selectedfrom at least three pallets. Tiles should be installed in accordance with BS 5534 (2003), Code of Practice for Slating and Tiling and BS 8000 part 6 (1990), Workmanship onBuilding Sites.
Fixing guidelines for the installation of Double HP20 tiles under a variety of conditionsmay be found in the Zonal Fixing section of our website www.imerys-rooftiles.com
The NHBC has now made the dry of all mortar bedded ridges and hipsmandatory, supplementary mechanical is now required.
Imerys roof tiles provide dry solutions for all ridges, hips, and verge areas. Theresult is faster, cleaner, and more ective.
Alternatively the Imerys Uniroll Can be used to comply with roof space ventilationrequirements of Building Regulations Approved Document C2 and BS 5250.
Imerys Uniroll is an innovative univer xed ventilated ridge and hip system.Manufactured entirely from aluminium, it overcomes the durability andweathering problems associated with other fabric based roll ridge systems.
• All aluminium construction.• Can be used to provide a ventilation
area equivalent to 5,000mm2/m athigh level.
• Suitable for all ridge and hip pr .
• Quick and easy to install.• Ventilated and driving rain resistant.• Available in red, brown or anthracite
300mm or 350mm width.• Handy 5m pack.
The optional Air-Flex Interlocking RidgeUndercloak is a breathable undercloakdesigned for interlocking ridges• Polypropylene• Working length of 100cm• Free air space of 1860cm2 per m• Available in red or black.
Imerys 409 75x48 Tile ClipAlso available: Eaveand verge clips
Stainless Steel Ridge Screws
DOUBLE HP20SECTION WITHINDEPENDENT
RIGHT & LEFTHAND VERGE
≈ 420mm with 1 tile ≈ 210mm with 1/2 tile≈ 100m with 1/4 tile
≈ 458m with 1 tile≈ 250mm with 1/2 tile≈ 145mm with 1/4 tile
≈ 415mm
Our commitment to sustainable development
Imerys Environmental Statement
The Group has undertaken an ambitious programme to improveits plants’ energy e�ciency and a number of projects usingalternative energy sources have been launched. A commitmentto the reduction of carbon emissions is ongoing. This involves major investment in the installation of special�lters to the exhaust outlets of all our factories, with theobjective of reducing and almost eliminating harmful airpollutants such as sulphur and �uoride. Imerys ensures the responsible environmental management ofits quarries, taking care to restore the landscape therebycreating valuable wildlife habitats. This restoration of quarryareas also creates lakes, forests and heathland which provideleisure and recreational facilities for our neighbours – the localcommunity with whom we work closely to developpartnerships in order to identify and satisfy local needs.
Imerys has a corporate policy for sustainabledevelopment, making environmental and social
implementation a key component of the group’sperformance. Strict standards are in place for its manufacturing units in terms of emissions,
water and waste management.
Imerys Roof Tiles are covered by a comprehensive 30 year guarantee of durabilityprovided that they have been installed in compliance with BS 5534 part 1 (2003) codeof practice for slating and tiling. BS 8000 (1990) part 6 workmanship on building sites.The �xing of roof tiles should comply with wind loads appropriate to the site locationand roof design, and calculated in accordance with BS EN 1991-1-4 to resist possiblewind uplift.
30 Year Guarantee
Double HP20 Burnt Red valley detail
Telephone 0161 928 4572 Fax 0161 929 8513Email [email protected]
www.imerys-rooftiles.comImerys Roof Tiles, Toekomststraat 18, B-9800 Deinze, Belgium
ASSOCIATE MEMBER
NATURA LPRODUCTSilicone-Free
Technical Seminarsnow available
Double HP20 Slate
National Building Speci cation Clauses (NBS) All essential clauses for Imerys roof are available,detailing all work items in section H65 ‘Single lap roof tiling’and H60 ‘Plain roof tiling’. www.imerys-rooftiles.com
BS EN 1304 (2005) Imerys Roof Tiles meet all the requirements of this Euro norm.
Double HP20 ChevreuseDouble HP20 Burnt Red
Ideal for new buildings and refurbishment projects
The Imerys Double HP20 Clay Tile
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