Hydrostop EU AH-25 Liquid Waterproofing is the Superior Choice

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What is Hydrostop EU AH-25?

  • A wet-on-wet, cold applied liquid waterproofing product
  • Fully reinforced with a polyester fabric
  • Free of solvents and isocyanates
  • Very low in VOCs, fume free, virtually odourless
  • Custom colours to order
  • Alternative to coloured single ply
  • It’s exclusive to SIG Design and Technology

 How is Hydrostop EU AH-25 supplied?

  • No waste – a single liquid product in a re-sealable tub
  • Exclusive to SIG Design and Technology

Where should I use AH-25?

  • Refurbishment to existing roofing e.g. over built-up felt systems, mastic asphalt, single ply, profiled metal or fibre cement
  • For repairs where existing roofing material has failed
  • For complex roofs, including new build e.g. complex detailing, upstands, edge details, penetrations and terminations. Where there’s roof-mounted plant. On balconies where single ply’s difficult to detail
  • On inverted roofs including roof gardens, it’s roof resistant and FLL approved (root resistant)
  • For combined pitched and flat roof applications of S1-S4 (<5% to >30%)
  • Where single ply, felt roofing or hot melt is not suited

 What is Hydrostop EU AH-25’s customer appeal?

  • No hazardous chemicals – can be used on sensitive projects e.g. schools, hospitals and food production etc.
  • No need to disrupt building occupancy
  • No heat or flames during installation
  • BBA certified & fire tested to DD ENV 1187:2002 ( Fire Rating Is BroofT4)
  • 25 year warranty from SIG plc (extendable)
  • AH-25 can perform for lifespan of building
  • Can only be applied by an AH-25 approved contractor

What is Hydrostop AH-25’s Installer Appeal?

  • Virtually odourless & fume free
  • No additional respiratory PPE at installation
  • Ideal for complex detailing/hard to access areas
  • Convenient and ready to use
  • For combined pitched and flat roof applications of S1-S4 (<5% to >30%)

and surface temperatures down to 0°C

  • Cold applied, fast curing, can apply wet on wet
  • No waste – a single liquid product

About Hydrostop AH-25 Installer Training

  • Can only be installed by AH-25 trained operatives
  • One day course comprising theory and practical
  • Operatives tested on theory and practical skills
  • Opportunity to join DATAC accredited installer scheme
  • Only DATACs are offered SIG warranties & technical support

Typical Hydrostop AH-25 Applications

  • Schools
  • Offices
  • Healthcare
  • Military installations
  • Sports facilities
  • Flats and condominium roof terraces
  • Domestic properties

How can I find out more on liquid waterproofing?

Download the new AH-25 brochure at  www.singleply.co.uk/flat-roofs/hydrostop-eu-ah-25/

Read more about the benefits of liquid roofing and other flat roofing materials at www.singleply.co.uk/blog/

eight steps to guide

To support SIG customers whatever the project, SIG Design & Technology has put together an 8-step guide to identify the challenges and ensure that a roof’s design meets a building’s requirements. Called “#Perfect Roof”, the eight steps follow the process from product selection and design expertise through to full guarantees and planned maintenance. This know-how is just part of the service that is provided absolutely free to customers and includes green roofing.

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Hydrostop EU AH-25 Liquid Waterproofing is the Superior Choice

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The Hydrostop EU AH-25 liquid waterproofing system is fast-curing, easy to apply and delivers superior performance. It’s a wet-on-wet, cold applied liquid waterproofing product that’s fully reinforced with a polyester fabric. Free of solvents and isocyanates, AH-25 has significant advantages over conventional liquid roofing systems and is exclusive to SIG Design and Technology.

In complex roofs including new build, AH-25 is ideal in tackling complex detailing, where there’s a lot of roof-mounted plant, or on balconies which would be difficult to detail neatly.

It’s suitable for refurbishment, repair, where access or power is the problem. AH-25 can also be applied to combined pitched and flat roof applications of S1-S4 (<5% to >30%).

This high performance liquid can be installed to inverted roofs where the membrane is laid under the insulation and ballast, e.g. roof gardens. AH-25 liquid waterproofing is root resistant and FLL approved, so can be used for green roofs.

An alternative to single ply in some applications and with custom colours to order, the AH-25 system is BBA certified, fire tested to meet Building Regulations and accepted by NHBC. A 25 year warranty from SIG plc is extendable, so AH-25’s longevity can mirror the lifespan of building.

There’s no need to disrupt building occupancy, so Hydrostop AH-25 has great customer appeal. As there’s no heat, flames or hazardous chemicals on site, it’s ideal for sensitive projects such as schools, hospitals and food production facilities.

Installers love AH-25 because no additional respiratory PPE needs to be worn at installation. The liquid has a very low VOC content, is fume free and virtually odourless. It can also be applied at <5% to >30% and at surface temperatures down to 0°C. Convenient and ready to use, there’s no waste as it’s a single liquid product.

Hydrostop AH-25 an only be applied by SIG Design and Technology approved contractors, so installers must attend a one-day training course and are tested on both theory and practical skills. Companies are offered the opportunity to join DATAC (Design and Technology Accredited Installer) scheme as only DATAC companies are offered SIG warranties and ongoing technical support.

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Liquid Waterproofing – when to use it

Liquid waterproofing systems provide one of the most cost effective methods for making a new or existing roof waterproof. Correctly installed and maintained they can provide life often in excess of 25 years, and in refurbishment liquid systems, can save up to 70% on roof replacement costs.* [*Source: The Liquid Roofing and Waterproofing Association]

So when would you choose a Liquid Waterproofing over, say, single ply membrane or hot melt?

  1. Refurbishment – when a roof is coming to the end of its life – liquid applied waterproofing is seamless and fully bonds to the substrate, ideal over existing roofing, including felt BUR, mastic asphalt, single ply, profiled metal or fibre cement.
  1. Repair – where an existing roofing material has failed – Liquid Waterproofing’s bonding characteristics make it a reliable, cost effective waterproofing overlay.
  1. Where access/power are the problem – in both repair and refurbishment, the contractor only needs to bring materials to site as needed, and without noisy generators or cabling.
  1. Complex roofs including new build – cold applied liquid waterproofing is superb in tackling complex detailing, where there’s a lot of roof-mounted plant, or on balconies which would be difficult to detail neatly.
  1. Inverted Roofs – where the membrane is laid under the insulation and ballast, e.g. roof gardens. AH-25 liquid waterproofing is root resistant and FLL approved, so can be used for green roofs.
  1. Pitched and flat roof combinations – cold applied liquids can be installed above pitches of 150, and below 50.

Typical applications include:

  • Schools
  • Offices
  • Healthcare
  • Military installations
  • Sports facilities
  • Flats and condominium roof terraces
  • Domestic properties

Download the new AH-25 brochure at  www.singleply.co.uk/flat-roofs/hydrostop-eu-ah-25/

Read more about the benefits of liquid roofing and other flat roofing materials at www.singleply.co.uk/blog/ or call us on : 01509 505714

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SIG Design and Technology is a part of SIG Roofing, a leading division of SIG plc, a FTSE 250 listed company and the UK’s market leading specialist supplier to professionals in the building and construction industry. It designs and supplies flat roofs, green roofs, and zinc, copper and stainless steel roofing and cladding.

To support SIG customers whatever the project, SIG Design and Technology has put together an 8-step guide to identify the challenges and ensure that a roof’s design meets a building’s requirements. Called “#Perfect Roof”, the eight steps follow the process from product selection and design expertise through to full guarantees and planned maintenance. This know-how is just part of the service that is provided absolutely free to customers and includes green roofing.

 

 

Registered Office: SIG Trading Limited, Adsetts House, 16 Europa View, Sheffield Business Park, Sheffield, S9 1XH. Registered in England No. 01451007 VAT No. GB 487 01733