Suppliers of: Aperam Stainless Steel Roofing Cladding stainless Steel Facades rainscreens.
Aperam manufacture stainless steel roofing and cladding that offers the ultimate combination of visual style, high performance, sustainability and suitability for diverse building styles. The recent introduction of ferritic stainless steel and consequent removal of nickel has both stabilised price and removed the high susceptibility to commodity driven price volatility and fluctuation allowing Aperam stainless steel roofing and cladding to be increasingly cost effective.
One of the main core products from Aperam is their Uginox Patina / Terne Coated Stainless which for decades has been the main choice for replacing lead on church roofs. This terne coated stainless steel product no only mimics the appearance of lead with a weathered finish but also makes further theft and resulting building damage extremely unlikely as there is no scrap value to metal thieves.
Aperam have supplied their terne coated Uginox Patina solution to churches and heritage buildings throughout the UK becoming a trusted and reliable option which is approved by English Heritage.
Uginox K44 Patina is free from Nickel so has a low and stable cost, whilst at the same time providing higher performance than grade 316. It is suitable for both warm roof or cold roof specifications and has a tensile strength which is far superior to that of copper, zinc or aluminium.
Historic England in recommending Terne Coated Stainless Steel state the following:
“In comparison with lead Terne Coated Stainless Steel offers a long lifespan of 80-100 years, and is comparable to lead in terms of its low maintenance requirements. It is very durable and coating the steel with tin (terne-coating) allows it to dull down after a few months to resemble lead. It can be laid with traditional round batten rolls to match the appearance and performance of lead. Terne Coated Stainless Steel offers many of the benefits of lead but without the risk of theft”.
Aperam Stainless steel roofing and cladding offers scope for use in new build, refurbishment and heritage projects. The increased incidents of metal theft, especially of copper and lead have also initiated the endorsement by English Heritage of the Aperam UGINOX PATINA K44 terne-coated stainless steel roofing as an alternative to lead or copper roofing. Acceptance for heritage projects stems principally from the availability of systems which weather quickly to take on the desired appearance of lead together with fast installation solutions.
There are many other surfaces delivering a wide variety of shade, texture and colour. Aperam stainless steel is light in weight, highly durable and offers exceptional corrosion resistance even in aggressive environments. Excellent mechanical strength enables it to be used at thinner gauges than most other metals used for façade and roofing systems. The strength and subsequent weight reduction delivers surprising cost benefits. Though the cost per tonne is high by comparison to other metals, the reduced weight is reflected in a correspondingly low cost per square metre.
Stainless steel has a very low coefficient of expansion but has high tensile and yield strengths. This means that single tray lengths of up to 20 metres can be used. Detailing work and on site fabrication including soldering is straightforward, even at very low temperatures. Stainless steel is also not susceptible to cold working fatique.
For contemporary building facades and roofs, Aperam surfaces retain their appearance for decades but present none of the attendant oxide corrosion issues associated with many other metals.
some of our work includes:
- Retail developments such as marks and Spencer Glasgow Fort, Birmingham Bullring and John Lewis Leicester
- Healthcare projects such as the South Liverpool NHS Health Centre
- Add to the leisure bullet Galashiels Interchange building
Aperam stainless steel roofing systems offer scope for use at very low pitches and are suitable for warm and cold roof designs, including ‘compact’ warm roofs. Installed using normal metal fabrication equipment, they offer an exceptional standard of colour retention, with UGINOX PATINA K44 also providing the matt grey characteristics of lead. In addition to providing excellent thermal and acoustic properties stainless steel roofing also requires no underside ventilation. Accompanying the high corrosion resistance is a similarly high performance in relation to thermal shock and an AA-rated resistance to fire.
Aperam façade systems offer scope to define a building’s visual aesthetic. The style is highly distinctive and in addition to complementing a wide variety of timber, masonry and glazing systems can be used to make a major contribution to high BREEAM performance. Standing seam, interlocking panel, cassette and ribbed cladding systems are available in addition to vertical and horizontal rises. The neat delineation of interlocking cladding panels and shingles can be used to create square, rectangular and diamond shapes while cassettes can be perforated or stamped for additional refinement. Assembly can be undertaken either on or off-site using standard tools.
Aperam UK projects span sectors including health, education, leisure, retail, heritage and commercial. They include:-
The Manchester headquarters of BDP Architects
Retail developments such as The Birmingham Bullring and John Lewis stores
The Laboratory of Molecular Biology, Addenbrooke’s Hospital Cambridge
Education projects such as Bishop Wordsworth School, Salisbury, Milton of Leys Primary School, Inverness and Fordham University Colchester
Leisure and Conference facilities at Crewe Hall Hotel, Staffordshire
view our case studies here
Stainless steel is fully recyclable and does not leach compounds or oxides that might contaminate water, soil or discolour other building materials. Indeed the harvesting of rain water is a regular requirement for use in grey-water applications or irrigation.
Maintenance requirements are minimal and even graffiti presents no major cleaning difficulties. Stainless steel is infinitely recyclable and therefore ideally suited within the construction sector where recycling levels are high. Overall, its inherent durability and long design life have led to it being classed as a highly sustainable green construction material.
UGINOX PATINA K44 is a bi-stabilized ferritic stainless steel terne coating on both sides that weathers over time, acquiring a natural matt patina akin to the traditional aesthetic of lead.
Aperam stainless steel surface finishes include:-
UGINOX TOP A permanent and durable matt finish
UGINOX PATINA K44 An electro-terne coating on both sides that weathers over time, and becomes grey with a matt finish.
Please contact Aperam for related information.
Uginox - Refuge du Goûter
The material of the envelope is a response to the climate and the environment.
With its summit at 4,810 metres, the Mont-Blanc becomes the holy grail of thousands of alpine mountaineers every year! Built at an altitude of 3,835m, the “refuge du Goûter” shelter constitutes the last stage of the normal – or royal – route before the final ascent. The shelter was built in 1962 and has been the object of intense usage but is now under menace from the advancing glacier. It is being replaced by a new audacious construction, in the form of an ovoid placed perpendicularly to the ridge over an advanced rockface.
The shape and location are two radical options taken to minimise the amount of snowdrift build-up and allowing the west wind to slip freely over the cliff. Identifiable by its thick folded stainless steel body, a snow melter tank with eight anti-stagnation devices completes the installation.
With temperatures as low as – 40° C, the idea is to create an environment akin to a soup-tin with a capacity of 120 people. Aside from the cocoon-like interior and the varied equipment designed to provide the required autonomy and of course, the extreme environment, specific research has been conducted in order to choose the exterior cladding. This had to be an evaluation of several types of metallic “skins”, in terms of their characteristics; deformation, resistance, visual aspect, fabrication, ease of installation and recyclability.
A 304L grade austenitic stainless steel siding proved ideal for the extreme conditions encountered in the pure mountain air and was compatible with the budget of the construction project. A four month study was necessary in order to define the details of the assembly and determine the profile of each facet to allow for easy assembly on-site. A novel assembly technique was devised, using a Z shaped profile of the steel bands on the upright and flat junctions, to insure constant flatness of the cladding, with hollow junctions of the same type of steel as the facets. Additional difficulties came from the windows and photo-voltaic panels which had been installed prior to the cladding.
Another imposed requirement in this protected and very popular site constantly over-flown by medical or surveillance helicopters, was to prevent unwanted shiny reflections that may dazzle pilots. The external cladding was made from 304 grade stainless steel with a Uginox top coating, 0.5mm thick for the covering and 0.8 and 1.2mm thicknesses for the sides. Each facet is “lit” by sunshine, just like the faces of the Mont-Blanc itself, as the sun runs its course through the day.
Uginox Top/Uginox Mat
0.5 & 0.8mm/1.20mm
Location Saint-Gervais, France
Architect Groupe H et Déca-Laage
Photo ©Pascal Tournaire
Uginox - Balancing Barn
The Balancing Barn stands on the edge of a tranquil nature reserve a few miles inland from the Suffolk coast, near the historic towns of Walberswick and Aldeburgh.
Clad in elegant silver tiles, with walls and roof covered in 0.5mm thick Grade 1.4404, 316L Uginox Bright stainless steel by Aperam Stainless Steel Europe. Working in closely with UK based Mole Architects of Cambridge Aperam SSE provided assistance with samples to assist the design and planning approval procedure.
The Balancing Barn is a cantilevered holiday home for clients Living Architecture, a British organization devoted to making architecture an experience, who have a series of outstanding holiday homes in the UK. The building, which is 3O metres long, balances over a descending grassed slope at its midpoint leaving 50% projecting into free space, all made possible by the rigid structure. The beauty of the ever changing Suffolk skies and landscape are reflected in the Uginox Bright surface rejoicing in the season’s colours and moods. Roof and walls are covered using a traditional technique of interlocking stainless steel shingles which are individually secured using secret fixings providing robust and easy clean surface. Specialist contractor CEL from Peterborough undertook the project.
The building incorporates four double bedrooms, each with separate bathroom and WC. At the centre of the barn is a hidden staircase providing access to the garden beneath. At opposite ends are the kitchen and large living space. All rooms have full height sliding windows giving wonderful views.
The advantages of stainless steel:
Its bright surface finish reflects the evolving colour of the day and of the seasons
A suitable aspect for this type of contemporary architecture
An easy implementation of shingles providing robustness to the facade
A smooth low roughness for easy maintenance
A grade (316L) suitable for marine atmosphere