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Old Roofs New Facades

Denne idé er en del af The Circular Construction Challenge – Rethink Waste

Vandkunsten AM
Vandkunsten AM
7. oktober 2018

Plenty of years and materiality are embedded when old clay roof tiles are removed. The concept Old Facades uses Old Roof elements as façade cladding as they are hung as shingles. The vision for Old Facades combines a well-developed façade concept for reusing roof tiles with an existing organization of locally based sales people and a central ambition for documenting the benefits of sustainable solutions internationally.

The concepts offers new tactility and a distinct story to each façade by transferring roof tiles to facades.This will appear familiar to the cultures who have grown familiar with reusing ‘old bricks’.

The source of Old Facade materials will be local – the mounting system may be globally made. Each country has perhaps hundreds or more variations of roof tiles because each local brick factory would make their own. This means that there will be local flavors that carry distinct cultural assets. It also entails that the manufacture and sales organization around the New Façade system must be adaptable down to the production of the mounting clip for each variety.

We will supply local architects with visualizations of their specific tile and design the particular variation of the mounting clip. We can offer LCA and LCCs of the products.

Up to two years may be needed in order to source the requested amount and type -



The scalability and local nature of the concept are the most radical features.

Komproment already has a broad sales team across 15 countries and we are on our way to develop fact books for each market for each of our new façade solutions. We suggest a similar route for the new facades. Starting with the Nordic market

While reused bricks may not be laid using lime mortar which ends the possible use after one circle of reuse. Reused roof tiles are placed as shingles and can be reused again.


What makes the solution circular?

The concept is circular in every way: pantiles are laid individually atop each other and disassembled the same way they are laid. – untying the ties and then stacking the tiles. Clay roof tiles have been designed for disassembly for millennia and can be dismounted by cutting the metal ties the connect them to the roof structure. 

— Which type of waste does the solution reduce?

Old Facades reduse the waste of clay tiles that is otherwise used as roadfill.

— How large is the waste fraction that you reduce? It will depend upon the availabiltity. Our immediate focus is on clay tiles but we are likely to continue with other roofing materials that are common internationally

— Why is this type of waste fraction particularly important to reduce?

It is a matter of showing how reused materials offer character and carry culture instead of ending as roadfill



What is the market potential of the solution?

There is already a few projects getting built using the concept. With an increased focus on circular construction, the market potential will rise.

— What does it take for the solution to reach the market and scale?

The steps introduced in the process plan more or less describes this. The mined materials are available and the first projects will show how easy the new concept will be handled.

— How can new technologies help speed up the production or scale the solution? Facades and their mounting adaptions will be configured using a program that may visualize the solution as well as calculate its cost. On a physical note, simpler testing of the sources roof tiles will make the necessary process cheaper.



Who is contributing to the solution? The applicant Komproment and Vandkunsten Architects are currently the contributors.

Vandkunsten Architects have developed the circular concepts and the office has expertise for LCA LCC as well as visualizations.

Kompriment has developed a sustainable facades division which has several certified products and an international sales force who turns to the sales book for each product for data and inspiration.

We need to test the commercial sustainability of the concept. Will consumers demand these facades and are they willing to pay the price?

We need to make a book of documentation for the old product line that is as reliable to our clients as are our documented features for new facades.

We will use the CCC collaboration to document standards as well as develop procedures for sales, mining, design, and manufacture. Internationally minded engineering consultants and marketing specialists are welcome to help solve the first steps in the process plan.

— How does the solution involve the different parts of the value chain? And how does the solution include the value chain in order to optimize its own potential?

The solution will nurture local socially sustainable businesses based on sourcing material components and about the logistics.

The solution will be local as well as global since it will be local roof tiles that will carry cultural values and materiality towards new facades.

— What partnerships are built around the solution, if any yet? Komproment and Vandkunsten Architects. a new company will be formed with the relevant partners.


With a product line of roofing and sustainable façade solutions, the applicant Komproment has a well-established network of sales points in 15 countries.

This means that potential mining sources from roof replacements, as well as new customers who are already looking at documented sustainable solutions. The customers are private property owners and advisers for larger-scale renovation and construction.

The dedicated and ongoing effort of documenting the sustainability of our current product line has provided the company with the experience and ambition to push even further. The sales book for each product in the New Facades and Old Facades will contain the same list of data and references to make an informed choice for energy consumption, the possible chemical content and cleaning, etc.

The sales team will offer to do analytical work for potential clients in terms of comparable LCA and LCCs. This expertise is already available at Vandkunsten Architectes and the work is free with a purchase.

Additional value comes from the specific history connected to each façade. The specific origin of each Old Façade may be listed as a quote or a small plaque upon delivery and.

The scalability of ‘Old Facade’ is its largest chance for commercial success and environmental impact. The better the sales the bigger the impact. In fact the clearly reused product may highlight the existing certified products and make rest of the certified product line stand out.

With hundreds of available roof tiles and their specific geometries, the big design challenge will be how to create an on-demand design customization and production for the mounting clips that will fit.

With aspects such as sales and logistics, we have altered the assessment diagram that Vandkunsten initially filled out for the very first prototype. The first demonstrations of the Old Facades will be built in the new district called Musicon in the Danish city of Roskilde. While still in a small scale, the case will offer important learnings and feedback from the building partners as well as housing agents and inhabitants.

We hope that the assistance of the CCC team can provide the product with some of the documentation, of ways of marketing the value of the product as well as designing the digital platform for navigation between demand and supply and the customization of mounting clips for the selected roof tiles. We have already prototyped physically, we need the prototyping assistance for the logistics and sales support surrounding this mass customizable facade system.


Value creation

What value do you create for the user, the planet and society as a whole?

— Who are the primary customers and users?
Primary customers are architects and building owners

— What is the target market for the solution, for example geographically?

The market is global but the intial market will be the Nordic region followed by Northern Europe 

UN Sustainable Development Goals addressed by the solution

Old Facades addresses several of the UN World Goals including:

•               #9 Industry, innovation and infrastructure:

•               #11 Sustainable cities and communities:

•               #12 Responsible production and consumption

•               #13 Climate action: