Waterproofing For The Future
CONTITE HHH INNOVATIVE PERMANENT - 20 YEAR WARRANTY
CONTITE HHH has been developed to meet the demands of designers, applicators and contractors.
Cormix has taken crystalline technology and combined it with water repellant pore blocking know how to form an all embracing waterproofer which is hydrophobic, hyrophillic and hygroscopic. This technology is backed with a 20 YEAR WARRANTY.
Contite HHH is a spray on economical sealing and pore blocking subsurface membrane. Gone are the application problems associated with sheet and liquid applied membranes. Gone the headaces of waterproofing in the rainy season, delays, bubbling, debond, UV issues, protection boards and detailing nightmares.
Contite HHH is a cost effective easy to install triple action waterproofer using nanotechnology. Used in the sprayable form Contite HHH penetrates up to 30 cm into the concrete forming a permanent subsurface membrane which cannot be damaged and self heals when cracks develop. Areas of use include: Roofs, basements, tanks, decks, podiums, tunnels, shafts, reservoirs and other below grade structures.
The Latest Development in Polyurethane Roof Waterproofing
If for roof waterproofing a membrane is preferred to crystalline waterproofing. CREST recommends using the latest PU technology a fully bonded liquid applied polyurethane. Elastoclad PU does not require toppings or other protection, it is completely UV resistant, allows ponding long term, root resistant, cures rapidly, crack bridging with greater than 500% elongation and is quickly overcoatable.
A water based environmentally friendly liquid applied membrane available in colours to compliment surrounding structures, decks podiums etc.
Now available from Cormix this material is a sound alternative to the old PU technologies and sheet membranes with all the inherent problems they have.
Elastoclad PU – One Component Polyurethane Waterproofe
How to select a waterproofer?
The selection of material is determined by the area requiring waterproofing e.g. roof, basement, tanks, swimming pool, wet areas, pools etc, the service, installation conditions and skill of applicators.
What questions should be asked when selecting a waterproofing system? Must it be UV resistant, will the concrete be dry or work carried out in the rainy season, what movement is expected, is crackling likely, are there any chemicals present, does the potential waterproofer need protection against backfilling or traffic. Is there likely to be a lot of detailing, is root resistance required? When considerting sheet membranes there are problems that need to be considered.
- Complex detailing
- A lot of time to install
- Dry concrete
- Protection against backfilling
- Protection against UV
- Concrete 28 days old
- A lot of labour to install
- Skilled applicators
- Damaged sheet membranes allow water to undercut / spread below them entering the structures in areas not adjacent to the damage creating very real repair issues
These are the disadvantages of sheet membranes. There are many sheet membranes based on different raw materials with varying qualities and thicknesses. How do you select the correct one, it's difficult? Why continue with old technology with proven faults when other more modern technologies exist that are developed with ease of use in mind and longevity of performance. The trend is to move to products that are formulated with local conditions in mind based on the latest nanotechnologies. During recent years integrally waterproofed concrete has become the preferred method of waterproofing in many countries either as an admixture or spray applied sub surface membrane. This is known as waterproofing by crystallisation.
Such technology speeds up the project, is easy to install, cannot be damaged, crack seals, lasts the life of the concrete / structure, is trafficable, provides corrosion protection to the concrete, is below the surface of the concrete, is root resistant, can be applied in the rainy season and carries substantial warranties. In other words avoids, the disadvantages of sheet membranes.
On roofs if the preference is for a surfaced applied technology, chose liquid applied Polyurethane waterproofing. This is fully bonded, UV resistant, does not require a topping, detailing is almost nonexistent, they are aesthtically pleasing. The PU should be water based to avoid fire hazards. For other areas basements and below grade structures specify the advantages of permanent waterproofing such as Contite HHH that, speed up programme, are permanent, crack seal, provide corrosion protection against chemicals and carbonation, no protection is required, economical and lasts the structures life. In areas with less demanding requirements such as wet areas and swimming pools, select a two part cementitious material with elongation capabilities greater than 200% the liquid polymer part should be at least 40% of the total sets weight and the polymer have a solids content of at least 40%.