Effectively preventing liquid or vapour transfer through structures has always presented the construction industry with severe challenges. We have always eagerly demonstrated its ability to meet and overcome these challenges. Experience in structural waterproofing is vital to achieve successful results. It is an often complicated and always differing field. We are able to confidently deal with all enquiries however uniqiue it may seem. Our experience and resources enable us to provide effective solutions from the Leading system manufacturers in this most challenging contracting sphere.
SERVICES QUICK LIST
MULTI-COAT RENDERS & SCREEDS 
The correct mechanical preparation is a vital part of the application process:- a system applied to withstand negative water pressures can only be as effective as its bond to the parent structure. Multiple layer applications ensure a joint free installation and the physical application thickness gives some flexibility in overcoming random profiled substrates.
It is essential that, where any movement lines between structural elements and / or where cracks remain live, pre-treatments of supplementary products are used to provide a flexible seal prior to commencing render or screed applications.
Typical projects: Commercial and Domestic Basements, Tunnels, Reservoirs, Lift Pits, Swimming Pools, Containment Bunds.
SLURRY COATINGS & THIN BED MORTARS 
Thin section factory mixed and blended cementitious mortars /coatings offer inherently similar solutions to multi-coat render/ screed applications. The applications thicknesses range between 2 & 6mm, produced as complete blended systems by the manufacturer with factory controls.
The systems are often used within the Water Industries as internal linings for containment solutions. The production of a waterproof lining within a thin system section makes their use desirable in areas where access is limited ( less tonnage of materials are required and the application times can prove to be shorter).
Typical projects: Commercial and Domestic Basements, Tunnels, Reservoirs, Lift Pits,
PROFILED SHEET MEMBRANES 
This versatile method of controlling moisture and vapour does not prevent water from travelling through the structural elements on internal applications, but rather controls its subsequent passage around the structure once it has passed through the structural building element.
Profiled sheet membranes provide effective drain cavities for moisture entering the structure and present a comparatively quick remedy to waterproofing problems: The mechanical screw fixing of these systems minimise preparation work as the system is not adhered to the structural surfaces, but anchored into the structure.
Typical projects: Commercial and Domestic Basements, Tunnels
HYPALON SHEET MEMBRANES 
Cracks or joints where continual movement prevails can be tackled effectively with the application of Hypalon sheeting strips. Its flexible nature combined with an effective adhesion and joining system provides a perfect solution in areas where other remedies might be impossible or impractical. The membrane’s elasticity means large or irregular joints and dissimilar material planes can be sealed to provide resistance to both negative and positive water pressure; even where 3-dimensional movement is a factor.
Typical projects: Basements, Reservoirs, Swimming Pools, Balcony Walkways, Car Park Decks, Containment Bunds
INJECTION TECHNIQUES
Where cracks occur in structures that should offer resistance to water penetration, Aqua reactive injection techniques are often employed as a simple and effective solution to restoring the waterproof integrity. It may be possible to avoid unnecessary and extensive treatment to paramountly watertight structures if leaking cracks are identified as the sole potential route of ingress; these cracks can be sealed using materials which are hand or mechanically injected into the affected area
Materials can be specified which, whilst they contain a hardening agent to produce a cure, also contain aqua reactive properties that accelerate the curing time producingeither a gel reaction or expand to form a foam compound providing a seal upon contactwith water.
Typical projects: Commercial and Domestic Basements, Reservoirs, Lift Pits, Tunnels, Car Parks, Balconies,Swimming Pools, Containment Bunds
VAPOUR RESISTANT COATINGS 
Direct moisture transfer of liquids can be addressed by eliminating the source or by controlling its passage; the transfer of liquid as vapour often poses alternative problems as condensation is created within the structure after entering as airborne moisture from cold / damp areas adjacent (such as earth retained behind basement walls).
The source of the ingress problem can rarely be finitely identified and it is often the structure’s inherent inability to prevent vapour transfer that allows these problems to occur. It may be possible to minimize the effects of this naturally occurring phenomenon by increasing the number of air changes in the area.
The coating systems which are available offer:-
Effective supplementary resistance to extend the performance of waterproofing systems to meet the design criteria requirements of many residential or corporate office conversions.
Provide effective installation of damp proof membranes to structural slabs prior to the laying of finishing screeds in any situation where the presence of an effective D.P.M. beneath the existing floor slab is questionable.
Typical projects: Commercial and Domestic Basements, Containment Bunds, Fast Track New Build Floor Slabs
DESIGNED WATERPROOFING 
The perception of a Specialist Waterproofing system within the Built Environment is often restricted to those of a refurbishment and or a restoration process. However, many can now see the advantages gained by incorporating specialist structural waterproofing techniques at the conception stage of new build projects.
Construction processes are continually advancing and the expertise of the Specialist Construction products industry and the Specialist Contractor is ever expanding to introduce more effective answers raised in the Design of Structures:
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The 1960’s construction industry boom utilised new ideas in erecting structures quickly using reinforced concrete as a principal material. The lasting legacy of this rapid expansion in new construction techniques is the frequent need for essential concrete repairs to structures decaying due to; contaminant attack; what is now recognised as poor detailing and; on occasion, the quality of workmanship at construction stage.
Improved repair techniques and material technology constantly prove effective on structures previouslyconsidered destined for major reconstruction or even demolition. It has become universallyaccepted that all concrete structures benefit from regular maintenance, design lives can be extended and the aesthetics of structures can be transformed through repair and refurbishment schemes.
SERVICES QUICK LIST
Quickseal provides numerous solutions in this large specialist area. Survey and report services can be undertaken to identify the primary cause of decay and attack on corroded structural elements: By working alongside the industry’s leading material manufacturers Quickseal can provide recommendations for potential solutions from various techniques available.
SPRAYED CONCRETE
Concrete placement forms an essential part in the Construction Industry and indeed in the refurbishment and repair of structures: When high volume or large areas require treatment, machine applied concretes and mortars through spray application are often the most suitable due to the speed at which both the ‘Dry’ and ‘Wet’ Spray application methods permit. Each process has its advantages; the structure’s durability, present stresses, aesthetic criteria and environmental constraints are all factors in the selection of the preferential approach for each project.
Dry Spray Techniques:
Dry spray machine applied concrete is extremely versatile, as a system which requires no pre-mixing of the materials or priming of the prepared repair areas. It can be a very cost effective method where the site wide environment can either tolerate or confine the rebound and dust by-products of the application process.With long feed distances possible, higher outputs can be achieved and application plant costs are kept to a minimum.
Wet Spray Techniques:
This process is advantageous when repairs are required in environmentally sensitive areas, or those in confined spaces. Because rebound and dust are kept to a minimum, and the constant concrete consistency achieved in this technique, this method can be employed continuously and effectively, even on horizontal or top face surface applications. Float finishing of the applied concrete is relatively easy and the site requires minimal protection - making this a uniquely adaptable technique for a wide range of applications.
Significantly, spray concrete plays an increasingly important role in new build projects. Its versatility - allowing complex forms and shapes to be achieved allowing the engineer/architect complete freedom of design - together with its cost effectiveness, is now recognised at the design stage as having many advantages.
HAND APPLIED MORTARS 
The environmental constraints in which repair schemes have to be undertaken has advanced the use of hand applied mortars in the repair of concrete elements. Mortar blends can be used that either offer lightweight re-profiling or structural integrity conforming repairs. As decay to many structures is limited to isolated structural elements; repairs are reinstated in relatively small areas at exposed steel reinforcement,
and or strike damage locations.
Hand applied mortars prove to be cost effective maintenance solutions for many of the concrete structures around us and the associated application of steel reinforcement protectors, sacrificial anodes, cathodic protection and levelling mortars, combine to create long term aesthetically pleasing repairs to concrete elements.
PROTECTIVE MORTARS & COATINGS
As decay to many structures is limited to isolated structural elements; repairs are reinstated in relatively small areas at exposed steel reinforcement, and or strike damage locations. Hand applied mortars prove to be cost effective maintenance solutions for many of the concrete structures around us and the associated application of steel reinforcement protectors, sacrificial anodes, cathodic protection and levelling mortars, combine to create long term aesthetically pleasing repairs to concrete elements.
The use of protective mortars and coatings often has two benefits; protection of the structure by resisting environmental and climatic attack, and; the production of desirable surface textures and colours.
There is a wide range of high performance products that enable pore filling / levelling of open textured or honeycombed concrete and the application of roller applied coatings that improve and complement the refurbished structure.
CORROSION INHIBITORS
Decay of reinforced concrete is often found to be paramountly attributable to the corrosion of steel reinforcement held in tension by the concrete. It is the mortar that ultimately cracks and breaks away from the rusting reinforcement bars as they expand beyond the section of its parent steel shape.
The rate of decay in steel reinforcement can be reduced dramatically by the deployment of Corrosion Protection techniques. By the time maintenance or repair is first approached on a structure it is likely that the decay of the steel has progressed to the point of delaminating surrounding concrete cover. Localised repair actions can be undertaken but concrete is likely to be broken out only in those areas that are visually and or 'sounded out' as defective.
Such efforts alone can all too often prove ineffective in actually addressing the corrosion issues that have led to repairs or maintenance being considered. Cathodic protection has been utilised over the years to provide increasingly long term corrosion control for reinforced concrete structures. Systems using electrochemical methods of either sacrificial or impressed current anodes have been developed to provide corrosion control solutions.
Impressed Current Systems:
DISCRETE ANODE SYSTEM; this system involves the installation of anodes positioned into drilled holes. These are set into pre-determined positions and depths dependent on steel density and chloride levels. The anodes are bedded in a purpose made cementitious mortar. The anodes are linked into a series.
TITANIUM ANODE MESH SYSTEMS; expanded titanium mesh or ribbon is fixed to repaired concrete. The reinforcement is checked to ensure continuity of reinforcement. Fixing to the concrete surface is achieved by means of non metallic fixings. Lead wires are fixed to current distributor bars linked to the mesh to provide power - the mesh is encapsulated within a sprayed concrete or flowable concrete application. The materials used for this overlay must be chosen for resistively. The above impressed current systems include for remote monitoring capabilities which relay current outputs to Consulting Engineers or Clients.
Sacrificial (Galvanic) Systems: 
Inherently simple system comprising the installation of sacrificial zinc anodes. Either installed at repair locations through attachment to the steel reinforcement within the structure or into predrilled holes where repairs are not being undertaken to offer resistance to corrosion within the steel reinforcement of the inherent structure. No electrical power source is required - however the current created by the anode installation cannot be controlled or adjusted to suit specific requirements through time.
Corrosion Inhibitors:
The application of this clear, colourless liquid does not normally alter the aspect of fair faced concrete, yet penetrates quickly through the concrete down to the steel by capillary suction. It is also carried by gas diffusion (Carbon Dioxide) and water penetration (Chlorides),-two harmful influences which are, paradoxically, neutralised in the process. The solution produces an encapsulation of the steel that, as previously mentioned, creates the neutralization required to inhibit on-going corrosion in the steel.
HYDRO DEMOLITION 
The process of removing defective concrete by Hydro-demolition is becoming a popular alternative to traditional breaking out processes.
The process which uses water jets to break up concrete has many advantages:Faster removal rates with less noise, less dust and less damage to reinforcement bar or sound concrete are improving renovation projects throughout the industry..
Water pumps increase the supply pressure to provide nozzle pressures up to 100 bar and during these works steel reinforcements is typically prepared to Sa21/2 standard, eliminating the need for subsequent grit blast preparation. The Hydro-demolition processes can be undertaken either by manual operation at the nozzle or via a robotic nozzle unit which provides a uniform, consistent and rapid removal of concrete overlarge areas.
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