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Stunning roof for London pub with new Sika Sarnafil self-adhered membrane

Specialist roofing contractor Hambro Roofing has recently completed works to a new JD Wetherspoon pub in London, known as ‘The Mossy Well’, which now boasts 500sq m of Sika Sarnafil Self Adhered membrane.

JD Wetherspoon has spent just over £3 million developing the outlet on Muswell Hill, which opened in October.

Extensive refurbishment and adaptations to the building needed to take place due to the existing roofs being in such a bad state. Essex-based Sika Sarnafil contractor, Hambro Roofing, was awarded the contract after proposing to use Sika Sarnafil single ply for the flat roof repairs.

The refurbishment comprised of complex work on the existing pitched roofs, lead flashings, guttering and renewal of the flat roof. A section of new barrel roof was also required in the centre of the building; comprising of flat, vertical and soffit detailing.

The client required the new roof area to look like a traditional zinc roof covering. Sika Sarnafil G410-15 FSA was specified for the job, with décor profiling to match the surrounding roofs. Ideal for the job, the system is lightweight, cost effective and offers a flawless finish.

Built on Hambro Roofing’s previous experience this was a highly successful project without any major setbacks and completed in the given timeframe.

The barrel roof was also fitted with SarnaTherm insulation over a SarnaVap vapour barrier. Sikalastic Liquid Applied Membrane was used on the detailing around the guttering to achieve a seamless waterproof finish.

Jon Hammersley, Hambro Roofing Director, explained “The works were incredibly challenging as there was a vast amount of awkward detailing including vertical fascia and soffit works. However, the new Self Adhered membrane allowed us to work fast and make the roof look fantastic. Sarnafil remains our preferred partner when it comes to single ply roofing because it is so reliable and gives the best results.”

“We had to work to a tight deadline in order to get the premises open on time which was achieved with our own in house labour force and great workmanship with the product,” he added.

Feedback was enormously positive on completion of the project. The client was particularly impressed by the effectiveness of the Self Adhered solution and the speed in which the project was completed, resulting in a stunning roof that fulfilled the architect’s vision.

For more information on Sika Sarnafil’s products and services, call 01707 394444, email sarnafilroofing@uk.sika.com or visit www.sarnafil.co.uk.

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Sika Liquid Plastics solution allows Asda store to remain open during roof refurb

A popular Scunthorpe supermarket has recently benefited from a complete roof refurbishment using a Sika Liquid Plastics Built-Up Roof waterproofing system. The Asda store had to remain open throughout the project, requiring expert planning by Northampton-based contractor Ice Roofing.

The building, originally constructed in 1976, was suffering from water ingress and the roof was in urgent need of repair. To ensure that the store could remain trading throughout the project, the client required a cold applied waterproofing option. Managed by Uplands Retail Ltd, the contract involved a tight timescale to refurbish several of the supermarket’s large roof areas, totalling 2000sq m.

Ice Roofing, a Sika Liquid Plastics Quality Assured contractor, already had a good reputation with Asda thanks to a number of previous jobs and were the obvious choice for the job.

Gareth Davies, Ice Roofing, explained: “We knew that our partnership with Sika Liquid Plastics would give us the advantage of additional expertise when specifying a product for the project.

“The team at Sika conducted a detailed survey, including thermal imaging using the latest technology, allowing us to see where the real problem patches where. This enabled us to reduce the area of roof we would have to completely strip back to the steel deck, which was really significant in keeping disruption to a minimum.”

A further challenge presented itself when asbestos was found in areas of the felt that needed to be stripped away. Ice Roofing brought in the experts to remove the existing substrate containing asbestos, while maintaining the integrity of the store’s waterproofing and complying with strict HSE standards.

Completed in just 10 weeks, two teams of three first increased the height of the roof by increasing the insulation thickness around various complex details. Sika Liquid Plastics’ Decothane Gamma 20 roof coating system in Slate Grey was then applied over the entire roof area. The cold applied, zero flame, zero heat Built-Up Roof system allowed the store to remain operational throughout the works; a key benefit for the local community.

A mineralised walkway was also installed to enable ease of access for future maintenance work.

Gareth added: “We worked fast and smart to deliver a seamless finish on the roof, with the liquid system offering ease of application around plant and penetrations. The superior 20-year guarantee, signed off by Sika Liquid Plastics when works were completed, sealed the deal for the client.”

Decothane is available in the UK from Sika Liquid Plastics. For further information visit http://gbr.liquidplastics.sika.com or call the inquiry line on 0800 112 3826.

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Sika Sarnafil specified for roof refurb at two of London’s biggest tourist attractions

The National Gallery and the Science Museum – two of London’s major and iconic visitor attractions – have benefitted from a planned roof maintenance programme, using Sika Sarnafil membranes and specialist contractor, Delomac Roofing.

Working with the National Gallery since 1995, a programme of roof replacement and thermal upgrading has seen in excess of 12,000sq m of Sika Sarnafil membranes installed, together with insulation, roof lights and walkways in a series of over 30 completed projects – including the complete Sainsbury Wing in 2008.

Working closely with the client and architect, specifications have been delivered using the Sika Sarnafil Partner Supply Chain to ensure watertight and long lasting protection to the priceless works of art on display.

At the Science Museum, ageing and poorly insulated roof coverings were targeted for upgrade and replacement in a series of tender awards, all successfully won by Delomac and Sika Sarnafil.

Brendan McNulty said: “With the impact of rising utility costs, effective thermal upgrades were completed with the roof works, delivering tangible cost savings.”

The Science Museum’s Flight Gallery houses many historic planes, including a Spitfire, a prototype Harrier and a cut cross section form a Jumbo Jet. Visitors were able to safely enjoy these exhibits without disruption while these important roof works were completed close by.

At both sites, environmental and whole life cost considerations were key in material specification – with a target to reduce energy use.

Equally, the lightweight membranes and considered planned specifications allowed system overlays with an entirely flame-free cold application, ensuring minimal internal disturbance to visitor experience.

“As with all London sites – particularly with huge public visitor numbers, logistical issues were challenging; but the advantage of a unified supply chain with out of hours early deliveries ensured zero risk to arriving footfall.”

“The roof refurbishments on both buildings have been designed to an exceptionally high standard. Our effective installation, backed by Sika Sarnafil’s robust guarantees ensure the client has peace of mind for years to come.” Brendan added.

For more information on Sika Sarnafil’s products and services, call 01707 358500, email sarnafilroofing@uk.sika.com or visit www.sarnafil.co.uk.

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Sika Liquid Plastics protects National Sailing Academy from the elements

Sat on the seafront in Pwllheli, North Wales, the Welsh National Sailing Academy and Events Centre boasts stunning architecture and design, but was a challenging build. Anglesey-based Weatherwell Roofing was contracted to waterproof the roof and walls, during a winter project that required the skilful application of a variety of Sika Liquid Plastics products.

Due to the location of the sailing academy, standing between the dunes and marina of Pwllheli, the main requirement of Ellis Williams Architects was to achieve a striking design that could withstand the elements. Any products used on the project would have to offer a flawless finish alongside durability and strength, backed by guarantees.

Sika Liquid Plastics’ liquid applied waterproofing systems fitted the bill and were specified across the building envelope. On the gabion walls, a Decothane Gamma 20 system was used, and on the concrete walls, a Sikalastic 618 15 year coating. All of the gabion walls were waterproofed down to the foundations of the building, with the liquid system seamlessly joining the walls to the roof areas. This created a 100% waterproof junction between the two, an extremely important factor for a building that must weather the coastal environment. In addition, Decothane has excellent elastic properties, making it UV stable and tolerant of thermal movement.

For the cold roofs, warm roofs and green roof area, totalling over 1000sq m, Decothane Delta 25 with applied on to various primed surfaces, from concrete deck to a mix of flat board and tapered Decotherm insulation. All the roof areas were covered by timer decking for use as viewing galleries and cafe seating areas, where a Sika Liquid Plastics protective layer was also used.

Kristian Lewis, Weatherwell company manager, said “We completed our portion of the project in 14 weeks, despite working through winter in very difficult conditions. Even in low temperatures we were able to expertly apply the Sika Liquid Plastics waterproofing membranes. The liquid applied nature of the products allowed us to get a great finish, even around the more complex detailing.

“It’s great to be involved in a project that will give so much back to the local community and open the door for new sailors in the area.”

The Sika Liquid Plastics technical team were on hand throughout the project to offer expert guidance, from initial design and specification to quality control during installation and final inspection, resulting in the issue of single point guarantees.

The National Sailing Academy, commissioned by Gwynedd County Council, secured funding of over £8m for its construction, in order to increase opportunities for the surrounding community and boost the local economy. The facility has been constructed to BREEAM ‘Excellent’ standards with sustainable features including biomass heating, solar panels and rainwater harvesting. Officially opened in the summer of 2015, the centre acts as a hub for national and international sailing events, as well as hosting a number of clubs and training activities.

Decothane is available throughout the UK from Sika Liquid Plastics. For further information visit http://gbr.liquidplastics.sika.com or call the Enquiry Line on 0800 112 3826.

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