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RESITRIX® waterproofing membranes offer more than 35 years of high performance roof covering for every type of flat roof, façades and even structural waterproofing and ground contact applications. RESITRIX® – the all-purpose, extremely durable and easy- to- install single-ply waterproofing membrane that guarantees ultimate efficiency, effectiveness and profitability.  


Visit RESITRIX® Website


RIBA Product Selector Plus © uses intelligent searching mechanisms combined with intuitive construction terminology to provide relevant search results to aid product selection. The core data is updated weekly.


Visit RIBA Product Selector

RIBA Product Selector

RIBA ONLINE CPD a web site from RIBA Enterprises, hosts CPD presentations approved by the RIBA for online delivery to the construction professional. These have been put together by members of the RIBA CPD Providers Network and others who opt for online delivery only. All presentations are independently verified and certified by the authoritative RIBA.


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RIBA Online


BPi is a free and highly detailed library of building products and suppliers accessed by thousands of construction professionals from the UK and beyond. A unique search facility enables you to quickly identify the right product, trade name or supplier from over 250,000 pages of data. Downloads are available from the extensive PDF library or access concise supplier profiles, images, case studies, links and British Standards.


Visit Building Products Online Database

BP Index

Hertalan is a sponsor of the Green Roof Organisation. GRO is a partnership of Industry and Stakeholders coming together to develop guidance for specification, design, manufacturing, installation and maintenance of Green Roofs within the UK market. The code was the result of technical cooperation across the UK green roof industry.


Download the GRO guidelines




Independent UK Resource For Information on Green Roofs and Brown Roofs.

Welcome to, the number one green roof website in the UK. is an independent organization that promotes green roofs and living roofs in the UK and is the UK member of the European Federation of Green Roof Associations.


Since was launched in 2004 it has helped move the green roof movement forward. We have been actively promoting green roofs to such an extent that London now has a distinct green roof policy and other cities and areas in the UK are developingsimilar approaches to encourage the uptake of green roofs.

Visit Living Roofs

Living Roofs


Comprehensive UK, Scotland and Ireland Construction Directory with daily updated news and press releases.




Based in Sheffield The Green Roof Centre was founded by the University of Sheffield, Groundwork Sheffield and the 4 surrounding local authorities (Barnsley, Doncaster, Sheffield and Rotherham). The Green Roof Centre operates with partners nationally to demonstrate the potential of green roof uptake in the UK.

Visit The Green Roof Centre

The Green Roof Centre


Specification is an essential part of the design process. A badly written specification can cause major problems for every member of the project team, and can cost the client a great deal of money. A well written specification can enhance project delivery and save money.  NBS products and services can help with all sizes of construction project, and from inception to completion.

Visit NBS Plus
NBS Plus


Established in 1985, the Confederation of Roofing Contractors is the premier roofing trades association in the UK, our members are considered to be the best in the business. If you require a roof repair or even a completely new roof our members are there for you.

All members are totally committed to providing clients with a quality driven service, reflecting good craft skills, working practices and a fair price.

Visit CORC (the Confederation of Roofing Contractors)