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Wilotekt-Plus Inverted Roof System - Concrete Slab (in-situ/Precast) / Timber Roof Deck

Verified by manufacturer 3 months ago

Axter Ltd

A robust second-generation hot melt structural waterproofing system accredited for waterproofing podium decks.

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Application

Inverted roofing applications.

Description

Exclusive structural waterproofing designed and manufactured for use on all inverted roofs, podium decks, living roofs, blue roofs and car park decks. A pure polymer modified bitumen compound formulation, combined with reinforcement mesh and high strength protection membrane, results in a tough, seamless, flexible, self-healing monolithic waterproofing system, with incredibly fast installation speeds, that will last the lifetime of the building.

The European Technical Approval enables the system to be CE marked.


Features and benefits:

  • ETA approved for zero fall applications - certificate number 03/0049.
  • Approved Document B: Fire Safety compliant.
  • High performance 7 mm-thick system.
  • Improved application, faster than traditional hot-melt.
  • Engineered to last the lifetime of the building.
  • Seamless monolithic waterproofing with zero tracking.
  • Fully adhered with self healing properties.
  • Advanced QA procedure over traditional hot melt systems.
  • Approved for use beneath a variety of hard and soft landscape finishes.
  • Immediately trafficable after installation.
  • Root-resistant without need for environmentally harmful chemical additives.
  • Manufactured within ISO 9001 and 14001 certified management systems.

General information

Color

Black

Material

Bitumen

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

25 year

Manufacturer guidance

Wilotekt-Plus achieves a mininum 25 year guarantee up to a ground breaking 35 year insured system guarantee covering materials, design, workmanship and insolvency. The system is designed to last the lifetime of the building.

Uniclass

Ss_30_40_30_42 Liquid-applied inverted roof covering systemsPrimary

CAWS

J31/130 Inverted roof coating

J31/5 Cold deck roof coating

Product range

WILOTEKT®-PLUS

Specification data - Liquid-applied inverted roof covering systems

Liquid-applied waterproofing

-

Reinforcement

Wilotekt reinforcement mesh.

Guidance for specification option:

WILOTEKT reinforcement mesh is used as the first layer to form the reinforcement of the system and to control the flow of the hot-applied WILOTEKT compound. 100 x 1 m rolls. Colour: purple. Roll weight: 15 kg. European Technical Assessment ETA 03/0049.

Insulation

-

Type

Hytherm ECO XPS and water flow reducing layer.

Guidance for specification option:

Axter grey Hytherm ECO XPS is a lightweight, durable, rigid extruded polystyrene XPS insulation board, designed specifically for inverted roofing applications in conjunction with the Axter water flow reducing layer. With excellent lambda insulation performance, a GWP <5, and a BREEAM Green Guide Rating A+ it enables the construction of energy efficient buildings. Achieves CE marking, and satisfies the relevant requirements set out in the NHBC Standards 2021, Chapter 7.1 


  • Standard board sizes:1250 x 600 mm.
  • Standard board thickness: 50, 80, 100 ,120, 130, 140, 160, 180 and 200 mm.
  • Thermal resistance: - 1.65–5.80 m²K/W (thickness dependent).
  • Compressive strength: 300 kPa at 10% compression.
  • Reaction to fire BS EN 13501-1: Class E.



Hytherm ULTRA XPS and water flow reducing layer.

Hytherm XPS and water flow reducing layer.

Hytherm EPS and water flow reducing layer.

Hytherm HP EPS and water flow reducing layer.

Manufacturer guidance

Water flow reducing layer (WFRL):

High-performance spun bonded polyethylene geotextile designed to improve thermal performance and to help minimize:

  • Water flow below the insulation;
  • Heat loss caused by rainwater cooling;
  • Thickness of insulation required;
  • Flotation effect;
  • Weight of ballast required.

The layer also allows water vapour from below to permeate and reduces the risk of condensation being trapped within the construction.

  • Water vapour resistance: 0.17 MN·s/g.
  • Roll size: 100 x 3 m or 50 x 1.5 m.
  • Overlaps: 300 mm sealed with Hytherm tape (sealing of the laps is optional).

System accessories

Lightning conductor clips.

Guidance for specification option:

  • Axter lightning conductor clips provide resilience and repellent characteristics, keeping them from fading and going brittle in sunlight.
  • 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.

TPE corners.

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.

Primer

Wilotekt surface primer.

Underlayer

Wilotekt compound.

Guidance for specification option:

Wilotekt Compound is a hot applied elastomeric modified bitumen based mastic. Used as the waterproofing compound in the Wilotekt®-Plus structural waterproofing system as well as for filling of joints, cracks and pitch pockets around stanchions, pipework etc.

Top layer/ Capsheet

Wilotekt protection membrane.

Guidance for specification option:

Wilotekt protection membrane is a stabilized polyester reinforced SBS elastomeric modified bitumen waterproofing membrane. The membrane is finished on both surfaces with sand. Top layer in the application of Wilotekt-Plus® composite structural waterproofing.

  • Width: 1 m.
  • Length: 10 m.
  • Weight: 48.8 kg/m².

Finish layer

20-40 mm washed riverstone /ballast.

Guidance for specification option:

  • Natural and aesthetic
  • Provides borders and fire breaks on living roofs
  • Can be used as habitat creation areas
  • Form areas of free drainage
  • Depth: 85 mm (typical ballast margin)
  • Colour: Grey/brown mixed
  • Shape: Rounded.

Washed Riverstone is also used to create perimeter sterile borders to all Axter living and biodiverse roof installations, acting as an effective barrier and restricting the spread of invasive plant species into gutter and drainage outlets.

Adjustable circular base paving slab supports.

Guidance for specification option:

  • Non-combustible, 100% full metal pedestal.
  • Suitable for roof decks, terraces, podiums, balconies.
  • Adjustable height range between 25 mm to 300 mm.
  • Supports all types of calibrated paving, including natural stone, concrete and porcelain.
  • 150 mm diameter circular baseplate giving greater lateral stability.
  • Weight tolerance of over 1 tonne each.
  • Smooth underside and edges prevent digging into substrate.
  • Bespoke headpieces for paving and decking.
  • Height can be adjusted when slabs/decking are in position (consult literature for height range).

Adjustable square base paving slab supports.

Guidance for specification option:

  • Non-combustible, 100% full metal pedestal.
  • Ideal for roof decks, terraces, podiums, balconies .
  • Adjustable height range between 25 mm to 300 mm.
  • Supports all types of calibrated paving, including natural stone, concrete and porcelain.
  • 150 mm diameter circular baseplate giving greater lateral stability.
  • Weight tolerance of over 1 tonne each.
  • Smooth underside and edges prevent digging into substrate.
  • Bespoke headpieces for paving and decking.
  • Height can be adjusted when slabs/decking are in position (consult literature for height range).

Copolymer propylene adjustable paving supports.

Guidance for specification option:

  • Easy to transport, store, handle and install.
  • Corrosion and maintenance-free.
  • Available in five adjustable versions (height range 8 to 590 mm). Consult literature for details.
  • High resistance to deformation.
  • Supplied in reinforced, humidity-resistant, re-usable bags.

Timber decking support adapter.

Guidance for specification option:

This Timber Decking Support Adapter enables easy installation of flat decking over a laid to falls flat roof. The joists are held clear of the roof itself, increasing their life and allowing free passage of water to outlets. 

  • Easily fitted to Axter fixed and adjustable polypropylene paving slab supports.
  • Perforations in the head prevent water stagnation and prolong life of timber decking.
  • High resistance to deformation.
  • Corrosion- and maintenance-free.
  • Easy transport, storage and installation.
  • Diameter: 120 mm.
  • Overall height: 60 mm.
  • Base height: 25 mm.

Manufacturer guidance

Note: If the podium is to have any soft landscaping such as planted areas, then a detail membrane with anti-root protection must be used.

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.


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Detail

Force 4000 Trafic.

Guidance for specification option:

Standard.

Hyranger TS CPV.

Guidance for specification option:

For details greater than 500 mm in height.

Force 4000 Flame Free.

Guidance for specification option:

Capsheet for combustible details.

Requires Vernis SA Primer and Stickflex as underlayer.

Sustainability data

Contains Red List materials

No

Country of product manufacture

France

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
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1

IFC
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1

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