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Force Dalle Inverted Roof Single Layer System - Concrete Slab (In-situ/Precast) / Timber Roof Deck

Verified by manufacturer 1 month ago

Axter Ltd Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

  • Certified B Corporation

    Certified B Corporation

    Certificate type

A single layer hybrid waterproofing system providing durable protection, BBA approved for zero falls.

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+44 (0)1473 724056 Website

Application

Suitable for a variety of applications including blue roofs and living roofs. Force Dalle systems can be fully or partially bonded in a completely flame free, hot air welded or torch applied application on flat roofs, terraces, balconies and podium decks.

Description

Hybrid waterproofing system that combines the benefits of hot melt systems and advanced polymer modified bitumen membrane technology to create an exclusive and highly durable system that is a cost effective alternative to traditional hot melt.


Force Dalle is engineered for use on all warm, inverted and cold roof types in accordance with BS 6229:2018 and in conjunction with all roof finishes. It is specifically developed to provide risk-free, added value and speed to the construction programme due to its ultra-fast minimal component installation process.


Features and benefits:

  • Application versatility - warm roof, inverted roof, cold roof and completely flame free.
  • 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 15/5222 PS1.
  • Robust and ultra-fast installation.
  • Zero fall accredited.
  • Blue roof accredited.
  • Living roof accredited.
  • Cost effective alternative to hot melt.
  • Manufactured within ISO 9001 and 14001 certified management systems.

General information

Color

Black

Grey

Finish

-

Manufacturer guidance

Riverstone pebbles and ballast.

Material

Bitumen

Mineral

Stone

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

20 year

Guidance for specification option:

Force Dalle achieves a 20 year insured system guarantee covering materials, design, workmanship and insolvency, and has a service life in excess of 50 years. A 25 year guarantee will be achieved when installed in a multi-layer system assembly.

Uniclass

Ss_30_40_30_79 Single layer sheet inverted roof covering systemsPrimary

CAWS

J31/130 Inverted roof coating

Product range

FORCE®

Specification data - Single layer sheet inverted roof covering systems

System performance

Guidance for specification option:

Force Dalle is a single or multi-layer waterproofing system suitable for a variety of applications including blue roofs and living roofs, has exceptional durability and performance characteristics and can be used on all construction types. All Force Dalle system assemblies comply with British and European standards and have been approved by the British Board of Agrément under certificate number 15/5222 PS1 including zero fall application. Force Dalle is classified unrestricted by the requirements 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.

Preparation

-

Horizontal work

Vernis SA Primer.

Guidance for specification option:

Variant for Timber Roof deck: To be used with Force Dalle Flame Free top layer/ capsheet.

Manufacturer guidance

/ Primer:

Protection layer

35 PY Angle Reinforcement.

Guidance for specification option:

35 PY Angle Reinforcement is a polyester reinforced SBS elastomeric membrane.


Angle Reinforcement for application on upstands, as detail and perimeter detail reinforcement and as pipe and other detail reinforcement.

Stickflex PY.

Guidance for specification option:

To be used with the Force Dalle Flame Free top layer/ capsheet.

Insulation

-

Type

Hytherm ECO XPS and water flow reducing layer.

Guidance for specification option:

Axter Hytherm ECO XPS is a lightweight, durable, rigid extruded polystyrene XPS insulation board, designed specifically for inverted roof applications and used in conjunction with the Axter water flow reducing layer. It is available in a range of thicknesses to meet the performance requirements of specific applications


Axter Water Flow Reducing Layers are supplied as part of our inverted roof insulation systems to improve thermal performance and to help minimise water flow below the insulation heat loss caused by rainwater cooling.

Hytherm EPS and water flow reducing layer.

Guidance for specification option:

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. Axter Hytherm EPS ADH (300) is a tapered expanded polystyrene (EPS) insulation board used to create required falls under compatible bituminous or single ply membranes in warm roof applications.

Hytherm HP EPS and water flow reducing layer.

Guidance for specification option:

High performance expanded polystyrene (EPS) insulation for inverted roofs, balconies and terraced roofs with pedestrian access. Suitable for zero fall designs in both uniform and tapered board schemes. Hytherm HP EPS is used with the Axter water flow reducing layer and gravel ballast or paving protection.

Hytherm Ultra XPS and water flow reducing layer.

Ballast

Riverstone pebbles/ ballast.

Guidance for specification option:

20-40 mm natural stone pebbles for borders and ballast, suitable for use with all types of Axter waterproofing systems where system ballast is required. Also used to create perimeter sterile borders on Axter living roof installations.

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.

Execution

Guidance for specification option:

Force Dalle is installed in a simple process, combining rapid drying synthetic primer with single or multi-layer Force Dalle fully bonded elastomeric membranes and bitumen compounds. Installation of Force Dalle waterproofing systems is carried out by accredited Axtershield Installers whose operatives have successfully attended Axter’s RBM upskilling course. Force Dalle systems can be installed on all deck types, can be fully or partially bonded in a completely flame free, hot air welded or torch applied application on flat roofs, terraces, balconies and podium decks. All system components are specified and installed to ensure compatibility and single source responsibility, and detailing is completed in full compliance with Axter recommendations and the NFRC Safe2Torch 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.

Ancillary items

Axtrim.

Guidance for specification option:

  • Manufactured from extruded aluminium alloy to BS 1474, Quality 6065/ T6 (AIMgSi 0.5 F22).
  • 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 0.7 mm stainless steel in a choice of diameters, with a factory bonded flange, if required to provide a bonding area with the relevant Axter waterproofing system.
  • SBS bitumen membrane flange 500 mm square, suitable for use with the full range of Axter reinforced bitumen membrane (RBM) and hot melt structural waterproofing systems.
  • On the Dual Outlet, a bitumen flange is fitted at AVCL level. 
  • PVC membrane flange 350 mm 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 the Hyflow leaf guard as standard.
  • AXTER sump outlet has a 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.


Show more

Top layer/ Capsheet

Force Dalle.

Force Dalle Flame Free.

Guidance for specification option:

Timber deck variant.

Detail

Force 4000 S with Stickflex Sanded.

Froce 4000 S with Hyranger TS.

Force 4000 Flame Free.

Guidance for specification option:

Variant for timber deck.

Sustainability data

Material

Bitumen

Mineral

Stone

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

10 %

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

15/5222 PS1- Axter Force Dalle Roof Waterproofing System

Certified B Corporation

Certified B Corporation

Declaration of Interdependence - Certified B Corporation

Case studies

West End Gate, London

West End Gate, London

The Cheng Yu Tung Building, Jesus College

The Cheng Yu Tung Building, Jesus College

Lily’s Walk

Lily’s Walk

Dylon Works

Dylon Works

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