Following the easing of the COVID-19 lockdown, Structural Renovations Limted mobilised at the world-famous theatre for two separate projects; one in the basement and one on the roof.
Prior to commencing on site we developed various procedures that would create a safe working environment for our operatives and theatre staff – the theatre remains closed to the public at this time.
The basement works involved waterproofing the beer cellar, which is situated in a vault beneath the pavement. The vault had already been waterproofed previously but the system had failed and significant amount water was entering the area.
All existing render was removed, to expose the brickwork and localised repairs were completed. Following this a waterproof bandage was installed and all junctions between walls and floor, followed by the application of a polymer modified, cementitious waterproof render. Once cured the render is able to be decorated.
The works above the stage roof required us to apply a fibreglass reinforced polyurethane coating to the rear of a brick parapet wall. The Theatre had experienced significant amounts of water entering the building and temporary repairs had failed to solve the problem.
The wall was thoroughly cleaned and any missing pointing/cracked bricks were made good with polyurethane mastic. Following this an application liquid applied, polyurethane membrane was applied to the wall and whilst wet, fibreglass was firmly embedded. A top-coat of polyurethane membrane was applied to fully encapsulate the fibreglass and form an effective barrier against the elements.
Structural Renovations have recently completed the external refurbishment of Huttons Hotel on Belgrave Road in London, SE1.
Huttons Hotel is converted from Victorian town houses and is situated approximately 1 mile from Buckingham Palace.
The building was thoroughly cleaned and loose coatings were removed. Following this a detailed visual survey and hammer test was undertaken to establish the extent of defective render and concrete.
Traditional render repairs were then carried out and the decorative details such as cornices and window surrounds were reformed using Flexcrete Monolite.
A decorative filler was applied to the facades to provide a level surface which was then over coated with Flexcrete Monodex Ultra.
To further enhance the life expectancy of the building the high level cornice was waterproofed with Sikalastic 625 and the junction between the window frames & reveals were resealed using Sika Hyflex 250 facade.
Structural Renovations are currently working at Victoria House in London, SW1. Victoria House is a 5 storey residential block completed in 1959. The front elevation is mainly brickwork, whereas the rear elevation extends with concrete access walkways, staircase and access to the basement.
Structural Renovations are employed to carry out extensive concrete repairs to the window cills & heads, walkway soffits, return walls and supporting columns. The defective areas were repaired using Sika MonoTop 615 and then all previously coated areas were treated with SikaGard 675W ElastoColor and all previously uncoated concrete was treated with SikaGard 680S Clearglaze.
The walkway decks, stairs and landings were repaired using Sika MonoTop 630 and were then treated with a reinforced waterproof non-slip coating made up of Sika Bonding Primer, Sikafloor 405, reinforced with Reemat Premium and Sikafloor 420.
Additional works to the front elevation were carried out which included sympathetic colour matched repairs to the front entrance using Remmers Restoration Mortar, replacement render to the gable wall & retaining walls as well as Helifix crack stitching and installation of Helibeams.
Structural Renovations have recently been completing waterproofing works in various locations within the Shell Centre in Central London.
Our works have involved controlling water ingress within the basement and lift pit areas of the main tower.
The 27 storey tower and 3 (now demolished) 9 storey wings were constructed between 1957 and 1962, on part the site used for the Festival of Britain. At the time the tower was the tallest building in the UK and the largest office building, by floor space, in Europe.
Our first phase of works involved pouring a new screed, laid to falls, within a double width lift pit using Flexcrete Fastfill repair mortar, modified with kiln dried quartz sand. The screed and 150mm of the adjacent walls were then waterproofed using Flexcrete Cemprotec E942, a cementitious waterproof coating, prior to the lift engineers reinstalling the lift buffers and rails.
The second phase of works to 2No. adjacent lift pits was based upon a bespoke waterproofing solution designed by Parkinson VTC Ltd. The works involved the installation of a wire mesh box around both sumps within the lift pits, prior to the installation of a 400mm thick layer of 10mm aggregate, to act as a soak away. A 450mm thick layer of Flexcrete Fastfill modified with 10mm aggregate was then installed over the soakaway. The screed and 150mm of the adjacent walls were then waterproofed using Flexcrete Cemprotec E942.
The limited space on site and strict delivery periods meant that up to 4 tonnes of material were being mixed and laid by hand each day.
A major redevelopment of the area, involving new office, retail and residential space has transformed the site and 1,700 Shell staff, who were temporarily relocated to Canary Wharf, have moved back to inhabit the main tower.
Structural Renovations have been working at Hallam House on Hallam Street since late 2018. The building is part of the Langham Estate portfolio and we have been working closely with the Estate’s Principal Contractor, Millane Contract Services and the Consulting Engineer, Jacobs.
The building is currently being refurbished and upgraded. In the basement plant rooms and brick vaults we have installed a new waterproof render using Flexcrete materials. Concrete repairs and anti-carbonation coatings have been carried out within the rear lightwell to the window heads and cills.
Internally, the existing lift was removed, and we were required to carry out extensive repairs to the staircase that wraps around the lift core. Existing supporting steel work was cut out and the landings and strings were repaired back to the original surface profile as required by the contractor installing the new glass lift.
Structural Renovations have recently completed works to install a reinforced liquid applied membrane to the concrete canopies over the shops on East Gate, Broad Walk, East Walk and Terminus Street in Harlow. The works also included concrete repairs and masonry stabilisation.
The works were carried out in two phases, in the first phase included the application of a reinforced, solar reflective coating to the canopies and concrete repairs and the introduction of expansion joints to the soffits. The top surfaces of the canopies were cleaned and then primed with Flexcrete Bond Prime, followed by the application of Flexcrete Roofdex HB reinforced with Flexcrete Cemprotec GFM 100. Concrete repairs to the soffit were carried out using Flexcrete Monolite. Finally expansion joints were installed, using Fosroc Nitoseal MS60, at regular centres to help prevent future cracking.
The second phase of works were to install Helifix DryFix ties into the large decorative panels on each corner of the building. This was to ensure there was a connection between the decorative panels and the underlying substrate. Following our installation the panels were subsequently rendered over by others to provide a uniform finish.