Rising damp is a major problem to residences and buildings in Gauteng. Not only is it unsightly and substantially reduces the value of properties, but damp inside the home can be a health risk to children, the elderly and those with low immune systems. Another unwanted side effect is that damp walls reduce thermal efficiency and can make homes much colder during the winter season.

The cause of rising damp is mainly due to poor building practice as well as poor architectural design. Common problems include no DPC (damp proof course) or incorrectly installed DPC. The DPC is a liner, usually made of heavy duty plastic which is installed just above floor level in between the bricks to prevent damp rising from the wet zone which is the brickwork situated mainly below ground level and built on the foundation. Another common cause is plastering and Painting of the wet zone area which is below the DPC layer. This should rather be left face brick which allows the wall to breathe instead of trapping the moisture in the wall.

Whilst rising damp is very easy to prevent at time of construction, it is unfortunately very expensive and inconvenient to repair afterwards. However fortunately, the technology exists to permanently cure damp walls.

Quick fix methods to hide the symptoms of rising damp such as applying special primers are at best very temporary and usually a complete waste of time. The only way of properly and permanently curing rising damp is to completely the remove the contaminated plaster. A special cementitous coating layer is applied to the exposed brickwork to seal the damp, but will still allow the moisture in the wall to escape and breathe in the form of water vapour. An important part of the treatment process is to inject a special silicone cream into the base of the wall to prevent further damp from rising up. This creates a chemical damp proof barrier as it is not possible to retro fit a mechanical barrier. The final step of the treatment is to apply a double layer waterproof salt retardant plaster. This is a blended mortar mixture which contains two chemicals, namely a waterproofing agent and also a salt retardant to prevent the white powdery salts from contaminating the plaster again.

Waterproofing, Damp Proofing, Balcony Waterproofing, Basement Waterproofing, Roof Repairs, Roof Leak Solutions, Waterproofing Johannesburg, Damp Proofing Johannesburg, Roof Coatings, Roof Painting, Roof Waterproofing, Roof Refurbishments, Tiled Roof Repairs, Metal Roof Repairs

Roof waterproofing contractors, Roof Repairs specialists, or contractors, in general, have a bad name because of a few rotten apples. There are some rules to adhere to when hiring a contractor. You have to research them thoroughly before you sign on the dotted line to ensure they are who they say they are. Also, it’s never a good idea to choose the cheapest quote. Chances are shortcuts will be taken to recoup lost money and you’ll be at the receiving end of it. Here’s why you should consider hiring a professional waterproofing contractor instead.

  1. It’s Not as Expensive as You Might Think
    It is a common misconception that hiring any type of contractor is expensive when in fact, the opposite is true. If your waterproofing contractor has a solid reputation, their rates will be in line with their competitors. When attempting a DIY roof waterproofing project, you will pay consumer prices for materials while professional contractors pay much less. You’ll also have to rent or buy the equipment needed to complete the project. Contractors already own them. Fact is that hiring professional waterproofing contractors will be much cheaper in the long run.
  2. You’ll Get Better Results
    How much do you really know about roof waterproofing? Have you done it before? It might seem like an easy job but specific skills are needed to successfully finish the project. If you’re not into wasting money on failed attempts of waterproofing your roof, it’s best to hire a professional right from the start.
  3. The Job Will Actually Get Done
    Procrastination my old friend. You know what I’m talking about. By hiring a professional you know the waterproofing project will be completed in a few days and you don’t have to lift a finger to get it done.

For more information about roof waterproofing or if you require a free consultation and quote, get in touch with us today!

Waterproofing, Roof waterproofing, Roof leak repair, Waterproofing contractors, Waterproofing companies

Waterproofing in structure construction is the procedure of making a structure waterproof or impervious to the ingress of water. Waterproofing is vital as it prevents water from penetrating buildings and assists to keep the interior areas dry. It assists in lowering the humidity inside the structure, reducing the damage done to furniture and alike.

In areas that experience high yearly rains and occasional flooding events, water proofing is a must. It is very important for basements and structures to be water resistant particularly in locations where the ground water level is high. When it comes to high water table, water in the soil is most likely to apply hydrostatic pressure on the basement flooring and walls. This can require the water through the fractures, which can lead to structural damages in addition to moisture-related issues such as mold, mildew and decay.

During monsoons, we all would have stumbled upon water seepages in the ceilings and walls or dampness in the after-effects of flooding. This is because of poor waterproofing By waterproofing your house, you can safeguard your structure from damage in addition to the things inside your house from humidity and water exposure.

Benefits of waterproofing.

  • Safeguards the structural integrity of the building
  • Avoids mold, mildew and decay
  • Prevents metals from rusting and wood furnishings from decay
  • Avoids seepages from the ceiling and walls
  • Prevents wetness inside the structure
  • Residential or commercial property value increases Property worth

Unhealthy living areas and a weak foundation can considerably reduce the home worth. Waterproofing increases the resale worth of a building, which is possibly one of the most significant benefits. Investors/buyers barely even consider homes without waterproofing. A number of property owners reside in homes with damp and dripping basements, frequently fearing the expense of waterproofing. However, getting this essential exercise done with fetches noteworthy rate of return. A waterproofed basement increases the utilizable square video footage in a house, all at once dismissing the possibility of a looming structural failure.

Waterproofing Methods & Techniques

Brick Bat Coba Method

RCC slabs in some cases develop cracks, which allows for a passage of rainwater. It is therefore essential to develop water-proof roof slabs, which can provide leak-proof environment to the interiors of the building. This approach needs a roofing system surface area slope for quick drain and sealing of all cracks and joints. Flat type roofing with RRC is utilized in climates with moderate to low rainfall. Coba treatment can be performed straight on RCC or stone slabs.

Brick Bat Coba

The surface area of the roofing piece should be cleaned up and cleaned with water prior to laying the first course

A fresh slurry is prepared by mixing cement with 1-2% very seal powder (acrylic based acrylintryl chemical).

The slurry is first blended dry and then water is included till it reaches a consistent consistency.

This newly ready slurry is spread on the cleaned roofing surface to create a smooth thin layer.

Cement sand mortar is prepared by including 1-2% extremely seal powder in a 1:5 cement sand dry mix (1 part cement, 5 part sand).

Water is added to get a plastic mortar.

This cement mortar is spread out on top of the thin slurry layer to get a 20mm thick cement mortar layer.

Brick bats are inserted in the 20mm cement mortar layer to produce a 100-150 mm brick bat later on layer.

The cement sand mortar is then used for grouting the formerly laid brick bat layer. All spaces and joints are filled. Ensure a smooth slope surface area over the brick bat layer.
Newly prepared plastic cement sand mortar is more spread on the grouted brick bat layer.

The grouted surface area is permitted to cure for 2-3 days to avoid surface area cracks.
Another cement sand mortar is ready (1 part cement, 5 part sand) with 1-2% incredibly seal powder. Water is included up until the mixture is consistent.

20mm thick layer of this mortar is spread over the brick bat mortar layer.
A trowel is utilized for ending up. Square markings can be made by string or trowel. This is to prevent surface breaking due to expansion or contraction in action to temperature modification.

Treating is continued for 2 weeks.

Water-proofing Membranes.

A water-proof membrane is a thin layer of water tight material that is laid over the surface. Stagnated water is most likely to permeate into the structural slab overtime. In flat roofed terrace, the membrane is laid over a filler material that is sloped to make sure that water is drained away by drainage pipelines.

Sheet Based Membranes.

Sheet based membranes come in the type of rolls. These are unrolled and laid on the company surface. Among the most common sheet based membrane is the bituminous waterproofing membrane.

Liquid Applied Waterproofing Membranes.

These are the type of membranes that can be found in the kind of liquid that can be sprayed or brushed onto the surface. By spraying, the liquid kinds a monolithic membrane, without any laps, welds or seams.

Polyurethane Waterproofing Treatment.

Polyurethane is made up of two components, base and reactor. Polyol functions as the base, while isocyanide is the reactor element. The mix of both these in a specific style ratio produces a liquid finishing for waterproofing applications. Polyurethane is a rather popular choice due to its ease of installation.

Waterstops.

Concrete joints are most accountable to seepage. Waterstops are elements of a concrete structure that avoid the passage of water through concrete joints. They are designed as fluid tight diaphragm embedded in or running along the joints.

Basement Waterproofing.

Apart from all these methods described here, basement waterproofing demands experienced and skilled treatments. You can find Waterproofing companies here.

Also See: http://www.4xforum.co.za/services/waterproofing-techniques-advantages/