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Excel® Warm Roof Multi Layer System - Concrete Roof Slab (In-situ/ Pre-cast) / Timber Roof Deck / Profiled Metal Deck

Verified by manufacturer 4 days ago

Excel WR System - Concrete (In-situ/ Pre-cast)

Axter Ltd Variant:
Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

Two-layer, torch-applied, warm roof, Alpa polymeric binder, Reinforced Bitumen Membrane (RBM ) waterproofing system. Suitable for new build and refurbishment applications.

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+44 (0)1473 724056 Website

Application

Suitable for installation on all structural support types in a torch applied and combined self-adhered application on flat, zero fall and pitched roof specifications.

Suitable for new build and refurbishment applications.

Description

Two-layer, torch-applied, warm roof, Alpa polymeric binder, reinforced bitumen membrane (RBM) waterproofing system. Suitable for new build and refurbishment applications.


Features and benefits:

  • Application flexibility: torch-applied, mechanically fixed and flame free.
  • Membrane SP performance classification requirement in accordance with BS 8747 Table 5. 
  • Classified unrestricted by the requirements of Part B of the National Building Regulations and deemed Broof(t4) in accordance with BS EN 13501-5:2005 fire classification of construction products and building elements.
  • BBA approved - certificate number 94/3037 PS1.
  • Exceptional aging characteristics in excess of 50 years in accordance with BS 8747 clause 4.9.6 Durability. 
  • Zero fall accredited as stated in BBA Certificate 94/3037
  • Manufactured within ISO 9001 and 14001 certified management systems.
  • Exclusive Alpa binder providing bond strength, flexibility and durability: creates a flexible and lightweight cap sheet allowing easy installation
  • Compatible with Excel Solar PV Flex System range. 


Workmanship in accordance with BS EN 6229:2018. By an accredited Axter Shield installer. 

Maintenance carried out in accordance with BS EN 6229:2019. Including appropriate maintenance schedules for warranty. 

General information

Color

Black

Guidance for specification option:

Charcoal.

Grey

Guidance for specification option:

Charcoal.

Finish

Mineral

Material

Bitumen

Guidance for specification option:

Alpa polymer modified self finished bitumen.

Mineral

Guidance for specification option:

Mineral slate chippings.

Shape

Other

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

30 year

Guidance for specification option:

  • Excel achieves a 30 year insured system guarantee covering materials, design, workmanship and insolvency, and has a service life in excess of 60 years

Uniclass

Ss_30_40_30_72 Reinforced bitumen membrane warm roof covering systemsPrimary

CAWS

J41/10 Reinforced bitumen membrane warm deck roof covering

J41/110 Built-up reinforced bitumen membrane warm deck roof covering

Product range

EXCEL®

Specification data - Reinforced bitumen membrane warm roof covering systems

Preparation

-

Horizontal work

Vernis Antac Primer.

Guidance for specification option:

Solvent-based, rapid drying bituminous primer specially modified with an adhesive. The product is supplied ready to use. Priming of concrete, timber or metal roof deck/slabs in preparation for receiving bituminous membranes.

  • Average consumption: 150 - 300 g/m².
  • Application method is by brush or roller, on dry, clean surface. Allow to dry completely before applying waterproofing membranes.
  • Drying time: 60 to 90 minutes, depending on weather conditions.

Air and vapour control layer

-

Type

Roll 25 Alpa Alu.

Guidance for specification option:

ROLLSTICK 31 ALPA ALU is a glass-fibre/aluminium reinforced bitumen air and vapour control layer with ALPA binder. It has semi-continuous strips of self-adhesive bitumen on the surface, protected by a thermofusible film, and a thermofusible film on the undersurface. Once installed, the product provides a temporary waterproofing layer, allowing internal works to be carried out immediately.


  • Width: 1 m.
  • Length: 7 m.
  • Weight per m²: 3.1 kg/m².

Insulation

-

Type

Hytherm ADH.

Guidance for specification option:

Hytherm ADH PIR insulation is a high performance board used in warm roofs under fully adhered reinforced bituminous membranes. For use on new roofs, refurbished roofs or for upgrading the thermal performance of existing roofs.


  • Type: Rigid expanded polystyrene (EPS) flat and tapered boards.
  • Facing: Coated glass tissue facing.
  • Board sizes:(small) 600 x 1200 mm, (large) 1200 x 1200 mm.
  • Thicknesses (flatboard): 25 - 150mm (also available in tapered).
  • Thermal conductivity: 0.026 - 0.024W/m.K (may vary, dependent on thickness).
  • Compressive strength: >150kPA at 10% compression.

Hytherm ADH Tapered.

Guidance for specification option:

High performance board comprises a fibre-free, rigid polyisocyanurate (PIR) core with a coated glass tissue facing on both sides. See guidance on Flatboard.

Hytherm BF.

Guidance for specification option:

Designed to provide optimum stability and structural integrity.


  • Type: Fibre-free, rigid polyisocyanurate (PIR).
  • Facing: Top: coated glass tissue facing on one side. Underside: bitumen glass tissue with polypropylene fleece.
  • Standard board sizes:1200 x 600 mm.
  • Standard board thickness: 30mm – 150 mm.
  • Thermal conductivity: 0.26W/m.K - 0.024W/m.K.
  • Compressive strength: >150kPa at 10% compression.

Hytherm CG.

Guidance for specification option:

Robust, non-combustible insulation material manufactured from specially graded recycled glass (>60%) and natural raw materials such as sand, lime, dolomite. Available in tapered.


  • Face: upper bitumen layer covered with a PE foil.
  • Lower: White glass fleece
  • Density: 100 kg/m².
  • Board size: 1200 x 600 mm.
  • Thickness (Flatboard): 50mm - 180mm.
  • Thermal conductivity: <0.036 W/mK (may very, dependent on thickness specified).
  • Compressive strength: > 500 kPa.

Hytherm CG Tapered.

Guidance for specification option:

Cut to falls insulation is a robust, non-combustible insulation material that can play a crucial role in the fire safety of a building as well as providing long-lasting thermal performance in a flame free (self adhesive or adhered) or torch-applied warm roof waterproofing system.


Hytherm EPS.

Guidance for specification option:

Axter Hytherm EPS ADH is a durable, lightweight, rigid expanded polystyrene (EPS) insulation available in both uniform and tapered boards for use in warm flat roofs with limited access and balconies and terraces with regular pedestrian traffic.


  • Type: lightweight, rigid expanded polystyrene (EPS) flat and tapered boards.
  • Facing: laminate.
  • Board sizes: Flatboard 1200 x 1200, 1200 x 900,1200 x 600 mm.
  • Tapered: 1200 x 1200, 1200 x 900, 1200 x 600 mm.
  • Thicknesses (flatboard & tapered): 25 - 600mm.
  • Thermal conductivity: 0.035- 0.033W/m.K (may vary, dependent on thickness)
  • Compressive strength: <500kPA at 10% compression.

Hytherm MW.

Guidance for specification option:

Excellent acoustic reduction, absorption and impact (rain noise) performance. Manufactured from renewable volcanic stone.


  • Type: Mineral wool flatboard or tapered insulation.
  • Facing: Mineral coated glass fibre fleece with tissue facing .
  • Board size: 1200 x 1000 mm.
  • Thickness (Flatboard): 30mm, 60mm, 85mm, 105mm, 115mm, 150mm, 185 mm.
  • Thermal conductivity: 0.039 W/mK (may very, dependent on thickness specified).
  • Compressive strength: > 65 kPa.

Hytherm MW Tapered.

Guidance for specification option:

Cut to falls insulation uniquely versatile insulation solution suitable for all roof covering types – torch applied, pour and roll, single ply, cold applied liquid, EPDM and living roofs. HYTHERM MW roofing boards provide unique tested solutions for fire, thermal and acoustic roofing systems for all building types. See guidance on MW.

Hytherm EPS Tapered.

Fixing

Hyrastik EVO.

Guidance for specification option:

Single-component, high performance, moisture-curing polyurethane insulation adhesive.

Waterproof covering

-

First layer

-

Type

Roll 25 Alpa Alu.

Guidance for specification option:

Glass-fibre/ aluminium reinforced bituminous air and vapour control layer (AVCL) with ALPA binder.


Top layer

-

Type

Excel Capping Sheet.

Guidance for specification option:

Torch-applied, reinforced Alpa Polymer modfied self-finished bitumen waterproofing membrane. 



  • Width: 1 m.
  • Length: 8 m.
  • Weight: 5 kg/m².
  • Surface: top: Mineral slate or granules 100-1200g/m²; bottom: thermofusible film 10g/m².
  • Reinforcement binder: Alpa -mix 3800g/m².
  • Cold bending test: -30°C.
  • Softening point: >110°C.
  • Tensile strength: length 600 N/50 mm; transverse >600 N/50 mm.
  • Elongation at break: length >35%; transverse >35%.

Attachment

Torch-on.

Mechanically fixed (EXCEL FM).

Manufacturer guidance

Installed fully or partially bonded, with fully sealed joints, using hot air fastening, torch-on or mechanically fixed (EXCEL FM*) techniques to form a continuous layer.

Detail work

-

Flashings

35 PY Angle Reinforcement.

Guidance for specification option:

35 PY ANGLE REINFORCEMENT is a polyester reinforced SBS elastomeric membrane. Minimal thickness is 3.5 mm.

Hyranger Spot ADH.

Skirtings and upstands

35 PY Angle Reinforcement.

Guidance for specification option:

Polyester reinforced SBS elastomeric membrane. 


  • Minimal thickness is 3.5 mm.
  • 10 x 0.25 m with an average weight of 11 kg .
  • 10 x 0.33 m with an average weight of 15 kg.


Axter 35 PY Angle Reinforcements fully bonded in accordance with Axter Ltd recommendations.

Ancillary items

Axtrim.

Guidance for specification option:

Manufactured from extruded aluminium alloy to BS 1474, Quality 6065/T6 (AIMgSi 0.5 F22), this high quality, cost-effective roof edge trim brings a neat finish to flat roof waterproofing.


Axtrim aluminium termination bars.

Guidance for specification option:

Axtrim aluminium termination bars are manufactured from extruded aluminium alloy to BS 1474, Quality 6065/T6 (AIMgSi 0.5 F22). Aluminium termination bars will not rust and are not affected by atmospheric pollution. They are colourfast and maintenance free, once installed.


Axtrim GRP termination bars.

Guidance for specification option:

Axtrim GRP termination bars are manufactured from pultruded GRP (glass reinforced polyester). It is UV protected and has low coefficient of thermal expansion. GRP termination bars will not rust and are not affected by atmospheric pollution. They are colourfast and maintenance free, once installed.


Rainwater outlets.

Guidance for specification option:

Axter rainwater outlets are manufactured from 0.7mm stainless steel in a choice of diameters, with a factory bonded flange if required to provide an excellent bonding area with the relevant Axter waterproofing system.

SBS bitumen membrane flange 500mm square suitable for use with the full range of Axter reinforced bitumen membrane (RBM) and hot melt structural waterproofing systems. On our Dual Outlet a bitumen flange is fitted at AVCL level. Axter parapet outlets are manufactured from 0.7mm stainless steel in a choice of diameters, with a factory bonded flange if required to provide an excellent bonding area with the relevant Axter waterproofing system.

SBS bitumen membrane flange 500mm square suitable for use with the full range of Axter reinforced bitumen membrane (RBM) and hot melt structural waterproofing systems. On our Dual Outlet a bitumen flange is fitted at AVCL level.

PVC membrane flange 350mm square suitable for use with Axter Ecoflex/Ecoline PVC single ply waterproofing systems.

Sump outlet.

Guidance for specification option:

Specifically designed for through walls applications or parapets where a high flow rate is required and are supplied with our Hyflow leaf guard as standard. AXTER sump outlet has an outstanding flow rate of 6.1 L/s. As recommended by UK design standard BS EN 12056:3-2000 with a water depth of 35 mm.


Wide parapet outlet.

Guidance for specification option:

Used where an increased flow rate (2.02 L/s) is required. A 90° pipe angle and extra-large leaf guards are also available to be used with this unit.

Universal leaf guard.

Guidance for specification option:

The stainless steel universal leaf guard is a solid and effective leaf guard which securely clamps to the inside of the outlet stem. Suits all sizes of rainwater outlets.


Parapet leaf guard.

Guidance for specification option:

The parapet leaf guard is a solid and effective leaf guard which is securely attached to the inside of the outlet and is fully adjustable to fit all three parapet outlet sizes.


Hyflow leaf guard.

Guidance for specification option:

The 1.4301 (304) grade stainless steel Hyflow leaf guard is a high performance leaf guard designed to be used with Axter rainwater outlets. Its use increases flow rate by over 50% compared to standard leaf guards.


Surface protection

Self Protected Excel Capping Sheet.

System accessories

Lightning conductor clips.

Guidance for specification option:

Axter lightning conductor clips provide excellent resilience and repellent characteristics, keeping them from fading and going brittle in sunlight. They are simple to install and are supplied as a one-piece unit. Colour is dark grey.

Rooflights/ access hatches.

Guidance for specification option:

Consult manufacturer for details.

Solar PV Flex.

Guidance for specification option:

Flexible thin-film photovoltaic system combining CIGS (Copper Indium Gallium Selenide) panels bonded to Axter waterproofing membrane Axter SOLAR PVFLEX flexible, thin-film photovoltaic system is a lightweight integrated solution where the solar PV module and the waterproofing are combined, and the PV module is secured to the roof system without the need for mechanical restraint and penetration of the waterproofing layer.

Execution

-

Manufacturer guidance

Where required installed to a zero fall or laid to falls. All in accordance with the manufacturer’s guidance, third party certification and British Standard documentation BS 6229: 2018. The structural deck must be clean and dry with moisture content below 6%. The deck should be cleaned ensuring the removal of all dust and loose material using approved methods. Please refer to Axter Ltd substrate preparation document for further guidance.

 

System completion

Interim and final roof inspections by AXTER Quality Assurance (QA) personnel. Final roof inspections by AXTER Quality Assurance (QA) personnel are mandatory for guarantee application.

Certification

BBA approved, accepted by all third party building warranty providers such as LABC and NHBC. Fully compliant with The Building Regulations and all relevant British and harmonized European standards.

Thickness

-

Manufacturer guidance

Insulation thickness. Consult technical literature and manufacturer for details and insert requirements.

Structure

Concrete.

Guidance for specification option:

Reinforced bitumen membranes should only be applied over a continuous substrate which provides full support. Support structure Materials used to form the roof deck in flat roofs should be those listed in BS 6229: 2018 and conform to the relevant requirements in BS 8217: 2005.

Underlayer

Hyranger Spot ADH.

Guidance for specification option:

Self-adhesive, stabilised polyester reinforced SBS 

elastomeric modified bitumen waterproofing membrane. The under surface is covered with a peel-off film. The under surface and side lap are self-adhesive.


  • Width: 1 m.
  • Length: 10 m.
  • Thickness (finished product): 2.65 mm.
  • Surface finish (bottom): Thermofusible polyethylene.
  • Weight (nominal roll weight): 31.6 kg.
  • Tensile strength: ≥1200 N/50 mm (length and diagonal).
  • Heat stability: +100°C.
  • Cold bending test: -16°C.
  • Elongation at break: ≥2% (length and diagonal).

Fire performance

Classified unrestricted by the requirements of Part B of the National Building Regulations and deemed Broof(t4) in accordance with BS EN 13501-5:2005 fire classification of construction products and building elements.

Finish layer

Bonded surface decorative aggregates.

Loose surfacing decorative aggregates.

Reinforced bitumen roofing sheets.

Pavers on supports.

Dalle Ceramic Tiles on Axter adjustable paving supports.

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BIM objects

BOS

NBS BIM Object Standard

This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.

Find out more about the NBS BIM Object Standard.

Platform Compatible Version
Revit
-

1

IFC
-

1

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

94/3037 - Axter Excel Roof Waterproofing System

Case studies

Bath Riverside

Bath Riverside

Abingdon Primary School

Abingdon Primary School

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