Waterproofed Basement for Caffè Nero

In brief

A basement in North London which had not been used for some time needed to be waterproofed as part of a conversion project.

The project

The basement of Fairfax Mansions on the Finchley Road in North London had not been used for some time although it had previously housed a café. The building was being converted into a branch of the coffee house chain Caffè Nero and the basement needed to be waterproofed as part of the overall conversion. Harrison Waterproofing was contracted to carry out the waterproofing work.

Waterproofing basement

Ronafix Mix E


Product and application

After discussion with the Ronacrete technical team, Harrison Waterproofing recommended that Ronafix Mix E should be used to provide a BBA Approved, durable high strength waterproof render to the basement walls. Harrison Waterproofing prepared the surface by scabbling with a bush hammer to provide a mechanical key for effective bonding of the render; glass fibre mesh was used locally over brickwork of uncertain quality. Ronafix admixture and Portland cement were mixed to produce a slurry to prime the brickwork and the first layer of render.  Ronafix was used as the gauging liquid to produce Ronafix Mix Design E, a blend of Portland cement, sharp sand and Ronafix admixture.  The render was trowel applied in two layers; day joints in the render were positioned so that joints in the second layer did not coincide with joints in the first layer, to ensure there was no direct path for water ingress through joints.


The basement was given a new surface finish using Ronacrete Ronafix Mix E polymer modified render, providing a securely bonded durable waterproof render, ready for interior decoration.  Ronafix site batched polymer modified renders (including Mix E) are covered by BBA Certificate No. 85/1651.

Ronafix Mix E is also available as Ronafix Pre-packed Tanking Render.

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Positive news about the Ronacrete CPDs

It is always good to get feedback on your performance particularly when it is good. We asked people to assess our CPDs against these criteria:

Quality of presenterCPD1d

  • Technical content
  • New/valuable information
  • Length of presentation
  • Organisation of the CPD

Each criteria was ranked excellent or very good.

Here are some of the things people had to say.

 Very helpful representative

 Very good (and unusual) to have someone presenting a CPD who has very good technical knowledge as opposed to being a sales rep.

I really enjoyed this presentation…very easy to listen to and it was great to see the sample materials and where the products have been used.

 The two RIBA Approved CPDs A Guide to Specifying Modified Screeds and SuDS Compliant Permeable Paving Resin Bound Surfacing Systems can be booked here. For other information about the CPDs we offer visit our website.

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Ronacrete joins RIBA CPD Providers Network

Ronacrete have joined the RIBA* CPD Providers Network and can now offer a RIBA Approved CPD to architect firms.

The CPD entitled Guide to specifying modified screeds has been assessed by RIBA and categorised under:

Core Curriculum Subjects

Designing and building it:  design, construction, technology and engineering

Knowledge level – General awareness


Ronacrete will be presenting the CPD at the RIBA roadshows later this year on 28th October in Crawley and 9th December in Milton Keynes.

“Our technical team have a wide knowledge gained from years of experience in the construction industry. I am very pleased that this has been recognised by RIBA and I am sure any architect firm will find the CPD both informative and interesting. We are currently working on CPDs relating to other products and applications and hope to be able to offer more subject areas in the near future.”

Daniel Osen, Managing Director


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RonaDeck Wet Pour Rubber Granule Surfacing

A new safety surfacing product suitable for children’s play areas has been developed by Ronacrete. RonaDeck Wet Pour Rubber Granule Surfacing is a resin bound system that combines resin with rubber granules to provide a “soft feel” surfacing that will absorb impact and noise.

The surfacing is soft underfoot and absorbs some of the impact of a fall, making it particularly suitable for play areas where there is a risk of falling, it is also slip resistant. RonaDeck Wet Pour Rubber Granule Surfacing is also suitable for pool surrounds and other leisure applications such as golf courses.

The surfacing is available in a selection of attractive colours with black, blue, green, red and yellow as standard; it is UV stable so the surfacing will not change colour after exposure to sunlight. The rubber granules are made from recycled rubber from the motor industry.

RonaDeck Wet Pour Rubber Granule Surfacing was used recently to replace the surfacing of the outdoor gym area at the Building Research Establishment Innovation Park in Garston near Watford. Yellow, blue, green and red rubber granules were used providing a safe, colourful, wearing surface.

RonaDeck Wet Pour Rubber Granule Surfacing

RonaDeck Wet Pour Rubber Granule Surfacing

Other products in the Ronacrete Resin Bound and Bonded Surfacing range include:

RonaDeck Resin Bound Surfacing

RonaDeck Resin Bonded Surfacing

RonaDeck Eco Path MT

RonaDeck Eco Tree Pit

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Haven Holiday Park, Burnham on Sea

A new swimming pool has been built at Haven Holiday Park, Burnham on Sea, Somerset. Ronacrete Approved Contractor Avalon Surfacing were commissioned to install 260 square metres of RonaDeck Resin Bound Surfacing to the pathways leading to the entrance.

Resin bound permeable surfacing at Burnham on Sea holiday village

Resin bound permeable surfacing at Burnham on Sea holiday village

Main contractor H & B 2000 Ltd was commissioned to build the new swimming pool at the holiday park. New paths were laid to give access to the building and H & B 2000 contracted Avalon Surfacing to pave the paths with a resin bound surfacing system.

Avalon surfacing first installed a layer of macadam to provide a firm base for the RonaDeck Resin Bound Surfacing, which was then mixed and applied to the paths.  The aggregate blend used was Quartz Parallel.

The RonaDeck Resin Bound Surfacing system was supplied as a two component UV stable polyurethane resin together with the Quartz Parallel aggregate. The two resin components were mixed by Avalon with a drill and paddle before being added to the coloured aggregate in a high capacity forced action mixer. As soon as the aggregate was fully coated with resin, the mixed material was discharged from the mixer and trowel applied at a thickness of 15mm onto the prepared surface.

Avalon had to be quick and efficient to ensure that the paths were ready for the start of the holiday season. The system was laid over a weekend prior to the pool opening on the Monday. The RonaDeck Resin Bound Surfacing system is ready for foot traffic within four hours of being laid.

The finished product provides Haven Holidays with a durable surfacing that is porous (SuDS compliant); this permeability prevents pooling of surface water. The RonaDeck resin is unaffected by ultra-violet light, so the paths will not yellow or darken over time.

Resin bound pathway around swimming pool at Burnham on sea.

Resin bound pathway around swimming pool at Burnham on sea.



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RonaDeck Resin Bound Surfacing, a steady path for students

A major building project at the University of Birmingham involved building new student accommodation and external works to some of the existing buildings.

As part of the development and refurbishment new paths were laid leading up to and around the accommodation. 1075 square metres of resin bound surfacing have been laid on the paths to create a durable, slip resistant and aesthetically pleasing surface for the students to walk on. Specialist student accommodation contractors, Ocon Construction appointed Route One Highways to lay the surfacing.

The product used by Ronacrete Approved Contractors Route One Highways was was RonaDeck Resin Bound Surfacing with a Harvest Crunch aggregate blend, it was laid on a prepared asphalt base.The RonaDeck Resin Bound Surfacing system was supplied as a two-component UV stable polyurethane resin to be mixed with a blend of kiln-dried decorative aggregates.  The two components of the resin were mixed with a slow speed drill and paddle before being added to a large forced action mixer containing the aggregate blend.  After ensuring that the aggregate was fully coated with resin, Route One Highways operatives spread RonaDeck Resin Bound Surfacing to level and smoothed the surface with a steel float.  The finished surface was ready for students’ feet within four hours.

Permeable paving at University of Birmingham

Student accommodation University of Birmingham

Ronadeck Resin Bound Surfacing satisfies SuDS requirements, allowing rainwater to quickly and easily drain through the porous surface.  All blends have been tested for slip resistance in wet and dry conditions; test results show the risk of slip to be low.

RonaDeck Resin Bound Surfacing University of Birmingham

RonaDeck Resin Bound Surfacing University of Birmingham

RonaDeck Resin Bound Surfacing is a UV stable resin bound aggregate surfacing; its functional properties and decorative appearance make it an attractive choice for a wide range of paving applications.

Range of natural aggregate blends offers a choice of colours and shades

  • Highly porous allowing free drainage of rainwater (SuDS compliant)
  • UV stable resin prevents yellowing, maintaining the appearance of the surfacing
  • Recycled aggregates available
    • for swimming pool surrounds)
    • Suitable for public spaces, footpaths, car parks, driveways, pool surrounds, podium decks, water features and many more applications
    • Installed by approved contractorsComplies with the DIN 51130 slip resistance test (suitable
    • Good slip resistance


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Ronafix screed goes down swimmingly ready for Glasgow games

The Tollcross International Swimming Centre in Glasgow has been extensively refurbished in preparation for the Commonwealth Games 2014. The existing 50 metre pool has ten lanes and a new 50 metre six-lane warm-up and training pool has been added with new fitness suites, an extension of the changing rooms, improvements to the café, further seating and a general refurbishment of the existing facilities. These improvements will not only provide suitable facilities for the Games but also for future major international swimming competitions as well as providing an excellent permanent recreational and sporting facility for local residents. The project was funded by Glasgow City Council (£13.15 million) and sportscotland (£650,000), works commenced in May 2011 and the new centre was opened in May 2013.

Swimming pool refurbishment

Screed used on steps at Commonwealth Games swimming pool.


As part of the redevelopment, the City of Glasgow Department of Architecture specified that the main contractors for the development, Barr Construction, should apply Ronafix Mix A to the stairways at the venue, to provide a hard wearing, dust proof, waterproof surface that could be laid in thin section. The screed was installed by sub contractor Industrial Floor Treatments


Ronafix Mix A is also available pre-packed as Ronafix Pre-packed Screed 6-50mm.  It has high compressive, tensile and flexural strength and can be trafficked after 24 hours; design compressive strength is 38N/mm² in 24 hours and70N/mm² after 28 days when cured at 200C.


Ronafix Pre-packed Screed 6-50mm comes from the Ronacrete Ronafix range of specialist quality controlled pre-mixed products. These include pre-packed products for tanking swimming pools and basements, for waterproofing structures, for under floor heating screeds and high-strength, thin and fast drying screeds.



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