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

Verified by manufacturer 3 months ago

Axter Ltd

A second generation hot melt structural waterproofing system with living roof finishes.

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 +44 (0)1473 724056 Website

Application

Inverted roofing applications.

Description

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 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

Material

Bitumen

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

35 year

Guidance for specification option:

Wilotekt-Plus achieves a minimum 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.

Manufacturer guidance

Wilotekt-Plus achieves a minimum 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_45_40_47_28 Extensive green roof systemsPrimary

CAWS

Q37/130 Extensive green roof

J31/130 Inverted roof coating

J31/5 Cold deck roof coating

Product range

WILOTEKT®-PLUS

Specification data - Extensive green roof systems

Protection

-

Protection layer

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.

Planting systems

-

Planting medium

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
  • 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).

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.

HydroSoil® plugplant extensive living roof.

Guidance for specification option:

  • Provides biodiversity for flora and fauna
  • Visually appealing; minimal maintenance required
  • Can be installed on flat or sloping roofs
  • Thin soil substrate
  • Self-sustaining vegetation such as succulents, grasses and wildflowers.
  • Consult manufacturer for further details on sedum varieties etc and insert requirements.

HydroSoil® sedum extensive living roof.

Guidance for specification option:

  • Provides biodiversity for flora and fauna
  • Visually appealing; minimal maintenance required
  • Can be installed on flat or sloping roofs
  • Thin soil substrate
  • Self-sustaining vegetation such as succulents, grasses and wildflowers.
  • Consult manufacturer for further details on sedum varieties etc and insert requirements.


Hydropack® modular living roof.

Guidance for specification option:

Axter Hydropack is a complete extensive green roof in a modular tray, combining excellent planting quality with simplicity of installation. Once installed, the effect is of an immediate living roof, with plants chosen to suit local ecological requirements.


  • Complete extensive living roof in a tray
  • Pre-grown vegetation (plant combinations to suit a variety of climates and conditions) –
  • Effective drainage and water distribution
  • Simple and quick to install in one operation.
  • Consult manufacturer for further details on sedum varieties etc and insert requirements.

HydroSoil® lawn intensive living roof.

Guidance for specification option:

Comprising a water retention and drainage layer with bonded filter fleece, top soil and high quality lawn turf.

  • Suitable for elaborate roof garden designs
  • Fully accessible - playgrounds, podiums, gardens, educational and sports areas
  • Can include trees, lawns, hard paving, water features
  • Achievable on flat roofs only
  • Integrated irrigation and regular maintenance required for landscaping.

HydroSoil® Wildflower.

HydroBiodiverse Brown.

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.

Guidance for specification option:

Wilotekt Surface Conditioning Primer is a black, liquid, solvent-based, fast-drying, bitumen primer modified with adhesive and supplied ready to use. Bitumen-based primer used on all substrates (concrete, screeds, metal and timber) before the installation of WILOTEKT®-PLUS structural waterproofing to provide a good key for the system and to protect the substrate from moisture.

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.

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.

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.
  • Tensile strength: Longitudinal 700 N/50mm; Cross direction 550 N/50mm.
  • Elongation: Longitudinal 40%; Cross direction 50%.

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-1.
  • 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.

Sustainability data

Contains Red List materials

No

Country of material origin

-

Manufacturer guidance

Various locations

Country of product manufacture

Europe

Recyclability

-

Manufacturer guidance

Please contact Axter Technical Services

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
IFC
 -

1

Revit
 -

1

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