APP Kft.
H-9028, Győr
Fehérvári út 75.
Tel.: +36 96 / 512 910
Fax: +36 96 / 512 914

UniCredit Bank Hungary Zrt.
H-9021 Győr, Árpád u. 45.
IBAN number: HU77109180010000043128640006
EU VAT: HU 11611989
Managing director, owner:
Péter Csizmadia

Executive Summary 2015
General Terms and Conditions of Delivery
ISO 14001 certificate
ISO 9001 certificate
Green Oasis on the Third Floor
Hot tango under the stars
The Most Common Mistakes on Green Roofs
Urban Heat Island
Promotional Material
DiaSafe brochure
NEW: DiaDrain-25H
Planning Guide - Croatian
Planning Guide - Danish
Planning Guide - Dutch
Planning Guide - English
Planning Guide - German
Planning Guide - Romanian
Planning Guide - Russian
Planning Guide - Serbian
Planning Guide - Spanish
Planning Guide - Swedish
Planning Guide - Turkish

Our vision is a city filled with gardens. We firmly believe that good intentions are not good enough, but must be followed by good deeds if we are to have a greener, friendlier and healthier environment. Our DIADEM® products and services are carefully designed to bring a little bit of nature into our increasingly urban lifestyles.

News, Updates


Representatives of the IFD (International Federation For The Roofing Trade) visited the DIADEM® headquarters. More »
Every year on the 22nd of April, Earth Day is celebrated all over the world. This is the 21st time we will celebrate this day with companies and organisations whose aim is to protect the Earth for future generations. More »
From the 2nd to the 5th of February 2016 the Dach+Holz international trade fair was held where APP Ltd. was one of the exhibitors. More »
We started the year right off with a successful seminar in January where we introduced the DiaSafe® product line, especially the DiaSafe® Glide system, the most successful innovation of 2015 to our French partner. More »

Season Cloasing

Dear Business Partner, our company will be closed from 23.12.2015 until 07.01.2016 for the Holiday Season. We would like to thank you for the valuable partnership and wish you and your family the best Seasons Greetings and a very prospective New Year. More »
We are delighted to announce that DIADEM® will attend Dach+Holz International 2016, on 2-5 February 2016 in Stuttgart. Our professionals kindly invite you to attend the exhibition and visit our stand at Hall 7 stand 7.102. More »

DIADEM®, a global system provider of green roof systems and roof safety solutions (, announced today that it has officially launched its new website. "The previous website went live on 7 December, 2009 so it is time to refresh our presence in the cyberspace" said Gabor Varga, President and founder of the company.

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Since announcing plans to expand their Lansing, Michigan headquarters to accommodate the future growth of 1,000 new jobs, the leadership at JNI knew they wanted to include features that reduced the structure’s environmental impact.Part of that effort is a 22,000 square foot green roof to sequester stormwater.

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Dear Partners,

DIADEM® team would like to wish you a Merry Christmas and a very happy, prosperous New Year!

Roofmeadow, a Philadelphia-based design firm, installed the green roof and chose DIADEM®’s DRS-Standard self ballasted, public space handrail system as a perfect match for the project.

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In light of global developments in the area of sustainable development, the Regional Conference on Sustainable Development organized with the aim of presenting and promoting the Centre for Sustainable Development, its plans and capabilities, as well as the launch of a wider regional dialogue related to the priorities of sustainable development in Montenegro.

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We are delighted to announce that DIADEM® will attend Bau 2015, the world’s leading trade fair for Architecture, Materials and Systems on 19-24 January 2015 in Munich. Our professionals kindly invite you to attend the exhibition and visit our stand at Hall A3 stand 535 .

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DIADEM® is delighted to announce that we will be at the RCI Show on the 29th and 30th October 2014, and will also have a dedicated demo area where DiaSafe®, the new, non-penetrating Anchorage point for roof safety will be shown.

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You haven't seen New York until you have seen it from the Empire State Building, Brooklyn Bridge, Statue of Liberty, Central Park, Times Square, and the Prospect Park.

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In the second half of 2013 the Romanian landscape benefited from the construction of the largest intensive green roof built as an attraction and relaxation point at the 2nd floor of the newest mall in Bucharest. More »
The City of Copenhagen local council chose the city's St. Kjeld Quarter to become a showcase of methods for adapting to climate change. The focus is on developing practical approaches that can be used to prepare the whole city for heavier rainfall in the future. More »
The Hermitage Museum in Saint Petersburg organises the yearly „Imperial Gardens of Russia” International landscaping exhibition and 'Plantomania' exhibition contest. At this prestigious event the Hungarian composition „Greenwave” was awarded the first prize (Category: „Beauty will save the world”). More »
Built on the side of a slope, the roof of this private residence in Northern Attica, Greece, has been designed using the DIADEM® 150 extensive greenroof system. More »
We are pleased to announce a new addition to our DiaDrain drainboard family. Based on feedback from many of you, expert in-house research and development process, the DiaDrain-25H combines the advantages of the other products and therefore fills a considerable gap in the market. More »
Our company was honoured to have been invited to be the presenter at the „ Roofgardens and intensive greenroof systems” event in St. Petersburg. More »
Emporia’s greenroof is among the largest ones in the world with DIADEM® system. The newly opened shopping center Emporia, in Malmö, Sweden with its 27,000 square meters is one of the largest living roofs in the world, each part of it is dedicated work for ecology and environment protection. Emporia will be the first shopping center in Sweden that is certified under BREEAM, a leading method for environmental certification of sustainable construction. More »
We are very pleased to tell you that we will be there again at the GaLaBau Exhibition in Nürnberg, one of the most prestigious landscaping expos in the world. More »
The usual summer DIADEM® Greenroof Seminar attracted visitors from 11 countries. More »
An urban heat island is created when the concrete and bricks of buildings and the asphalt of roads have replaced the permeable vegetation layers of the natural landscape. More »
It is increasingly important and popular at universities all over Europe to provide expert and practical knowledge to students about green roofs. More »
NORDBYGG, the largest building EXPO in Sweden was held between 20-23 March 2012, where APP Kft., developer and producer of the DIADEM® greenroof systems, together with BYGGROS, presented its product range to local architects and building experts. More »
Our DIADEM® greenroof products and services have been on the market for 17 years this March and we wanted to do something a little different to celebrate the fact. More »
Greenroofs can be attractive even in winter! More »
We are pleased to announce that our DIADEM® Facebook pages are now available for you to read more about us. More »
Компания АПП каждый раз стремится дать профессиональную поддержку своим партнерам. Так, недавно закончилась работа над русскоязычным каталогом фирмы. More »
We at APP Kft. take every opportunity to provide professional and expert support to our partners. As a part of this effort our DIADEM® Planning Guide is now complete in Russian language. More »
„Mr Rosner stood helplessly together with his wife on the terrace of their jointly chosen new penthouse-style flat in the center of Ingolstadt”. Find out how the DIADEM® team managed to help Mr Rosner in realising the green roof. Green oasis on the 3rd floor is a living example of the innovative solutions that characterise the DIADEM® concept. More »
APP Kft. is proud to welcome SIMACEK Services RO SRL among its global DIADEM® distributor network. SIMACEK Services RO SRL operates as the sole distributor for DIADEM green roof systems in Bulgaria and Romania. The company belongs to the SIMACEK Facility Services Group owned by an Austrian family. More »
"A lot of people would like to enjoy the view of a green planted area instead of the stark empty roof that they see daily from their office windows or from their residence. Currently, only few people are granted with such a view, but the numbers are on the increase and it is perhaps timely to discuss how to avoid poorly constructed roof gardens." states the article. More »
The Distributor Seminar held biennially comes as part of APP’s continuous education programme and also is an invaluable opportunity for exchanging experience and strengthening the ties between the DIADEM® team members. This year the seminar was held in Hungary.
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DIADEM®'S D-150 multilayered extensive system will covers Eastern-Europe biggest, 430,000 sqf greenroof in Budapest on the South-Wastewater Treatment Facility. More »