In early May Structural Renovations were employed to carry out emergency repairs to the reinforced concrete at Carnival Pool in Wokingham.
The leisure complex was constructed in the early 1990’s and following a detailed survey of the undercroft areas of both the main and learner pools it was established that extensive repairs would be required to the supporting beams, soffits, drainage channels and external walls of the pools.
The complex is planned for redevelopment in 2020 but in order to keep it operational until then a repair scheme had to be implemented that would provide the required protection in an aggressive environment.
Working closely with the local authorities consulting engineer it was agreed that defective concrete would be removed and any exposed reinforcement treated prior to reinstatement with a polymer modified repair mortar. In certain locations where the warm, moist atmosphere, combined with chemical attack was most likely to accelerate the deterioration of the concrete a migrating corrosion inhibitor (MCI) was applied.
Additional works instructed included waterproofing the drainage channels, both internally and externally, using a thixotropic modified polymer coating, complete with an embedded elastomeric composite tape.
This 6 week project was completed on time and due to careful programming the public parts of the complex were required to be closed for only 2 of those weeks.
Structural Renovations commenced work in October this year at this purpose built residential development, comprising 3 linked blocks, in southwest London.
Our brief was to survey, prepare and repair the exposed faces of the reinforced concrete slabs, which form the floors and roof.
Previous repairs and coatings had deteriorated, together with additional defects that had developed since the last maintenance scheme and the survey identified extensive damage.
All defective concrete was removed back to sound material and the edges square-cut to prevent feather-edging. Any exposed reinforcement was cleaned of corrosion before being treated with 2 coats of corrosion preventative primer. The prepared defects were reinstated using a polymer rich, cementitious repair mortar, back to the original surface profile.
Following completion of repairs the previously decorated concrete was pressure-washed to remove loose and failed coatings, to form a stable substrate, upon which a coat of water based, epoxy modified surface primer was applied. The primed surfaces were then treated with 2 coats of a pigmented, anti-carbonation coating to afford protection to both repaired and existing concrete but also to provide a uniform aesthetically pleasing finish.
The works were accessed from a fixed scaffold and completed within a restricted programme period, to the satisfaction of our client.
Structural Renovations have carried out refurbishment works at Safestore’s Head Office in Borehamwood. The building previously housed the Royal National Lifeboat Institution head quarters and was used for making parts, storing supplies and examining damaged boats from 1939 up until 1976.
The rendered and concrete surfaces to each façade were hammer tested and defective render and concrete was removed back to a sound substrate.
In some locations the brickwork beneath the render had cracked and required the installation of Helifix Helibars to reintroduce the structural integrity, particularly to the two front corners.
The whole building was then overcoated using Weber.Cote Smooth and the cills, feature bands and plinth was overcoated using Dulux Weathershield Smooth to match Safestore’s corporate colours.
Structural Renovations have recently completed a large concrete repair and coating project at a senior school in Maidenhead, Berkshire.
Furze Platt Senior School is a mixed school, with 1,250 pupils, which opened in 1963.
The School is comprised of multiple flat roofed, concrete framed buildings of varying heights, typical of the period they were constructed.
We surveyed the buildings in 2016, in order to provide the Governors with budget costings, which allowed them to apply for the required funding, which was awarded to them in May this year.
Originally it was planned that the works would be phased over 2-3 years but the decision was made to complete the entire project in a single phase, during the summer holidays.
A significant amount of scaffolding was required to the 21 elevations being repaired, which necessitated us mobilising prior to the closure of the School, whilst the pupils and staff were still present. Extreme care had to be taken to ensure pupils and staff were excluded from working areas and designated safe routes were implemented.
Once the School closed we commenced our works, which involved hammer testing and close visual inspections, prior to breaking out, square cutting, cleaning reinforcement and reinstatement using Flexcrete Technologies specialist repair mortars.
Following the repair process, all concrete was pressure washed and subsequently coated using Flexcrete Technologies pigmented anti-carbonation coatings.
In order for us to hand the School back in time for the beginning of the new term we were required to work both weekdays and weekends, at all times liaising closely with the School’s facilities team.
Although tightly constrained by time we completed the project as planned and in line with the budgeted funds.
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.
Structural Renovations have recently completed the 1st phase of structural repairs to a late 1960’s office block in South East London. Edinburgh House is currently being completely redeveloped as part of a £16m project that will provide 6,500m² of space. Once complete the building will be used as a flexible working environment for start-ups, through to large organisations, the clients’ ethos being, to provide a community in which people can network and collaborate.
Our works have included surveying the concrete slabs, columns and walls, followed by extensive concrete repair. The repairs were completed by both hand and pourable techniques, using Fosroc repair products, where the finish will be left exposed as part of the design scheme.
We will remobilise in September for the 2nd phase, which will include major poured repairs to redundant service voids in the ground and lower ground areas.