Extend The Life Of Your Flat Roof Waterproofing

20 Sep

A structure with a flat concrete roof is very solid and an excellent building design. Flat roof waterproofing normally consists of 4mm thick modified bitumen torch bonded system that has traditionally proved the most successful and best value for money products in South Africa since 1980.

If the waterproofing is installed properly at the time of construction, the life expectancy of the waterproofing layer could easily last in excess of 20 years. A well installed good quality system could even have a life expectancy of 30-40 years. Often the reason for  leaks to waterproofing is due to minor cause which is easily repairable and may not necessitate replacing of the entire waterproofing layer.

The most common cause of leaks on waterproofing that is in good condition include:

  • – Minor delamination of seams.
  • – Splitting of membrane to internal and external corners.
  • Waterproofing pulls loose where it seals into outlet pipes.
  • – Failure of flashing to turn ups around perimeters.
  • – Defective waterproofing around pipes and other penetrations.
  • – Damage to waterproofing, especially by other trades (plumbers, electricians, cable installers etc).
  • – Blocked outlets due to dirt, leaf litter or bird foul.

Looking after waterproofing can be compared to looking after a car. It is quite possible to drive your car for 50 000 km without a service. However, the lifespan of an engine is shortened if oil and filters are not changed. Likewise the waterproofing on your roof will easily last for 10 years without maintenance. However during that time minor defects could occur to corners, laps, protrusions and outlets.

A typical example is that an electrician may have drilled a hole through the waterproofing and installed cable clips with nails to keep the new wire in position. This will cause leaks and damage to the inside of your property. The protective aluminium paint layer will also not last 10 years. This is an excellent coating but it does weather and leaves the bitumen exposed to the harsh UV rays of the sun. The bitumen oxidises and starts to break down prematurely.

Flat Roof Waterproofing Maintenance

It’s advisable for the home or building owner to do an inspection on their flat roof at least once a year. Even a non expert untrained eye will easily pick up problems like blocked outlets and obvious damage to the waterproofing layer.

However, every three years the services of a professional waterproofing contractor should be engaged. Trained workmen will know exactly what and where the possible problem areas are and rectify them accordingly. Thus, ensuring the best chance for your roof to remain trouble free until the next inspection.

Heat Resistant Paint, Waterproofing, Damp Proofing, Painting, House Painting,  Gutter Services, Safety Systems, Safelines, Thermal Roof Coatings, Roof Painting

Waterproofing on flat roof which is well overdue for maintenance. Aluminium paint coating has weathered off completely. Overlaps to waterproofing are pulling loose

Extend The Life Of Your Flat Roof Waterproofing 2

Waterproofing which dresses into outlet pipe is defective and will cause water ingress problems.

Extend The Life Of Your Flat Roof Waterproofing 3

Careful inspection and repair to the existing waterproofing layer by trained workmen. The completed repair and overcoating job which will substantially extend the life of the waterproofing system.

Long Term Benefits Of Roof Waterproofing

19 Sep
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

If you think roof waterproofing is a waste of money, think again. Yes, we realise that consumers get scammed into spending money on useless services and products all the time because of clever marketing strategies but this is not one of those tactics. Waterproofing your roof offers many benefits and even if it requires an investment on your part, should be seriously considered. Here’s some benefits on roof waterproofing:

1. Roof Waterproofing Will Save You Money in the Long Run

Water leaks, if left untreated, can cause serious structural damage. By waterproofing your roof you will save time and money as well as the inconvenience of replacing rotting roof trusses, allowing you to live with a higher level of security and comfort. Find out more about Balcony Waterproofing here.

2. Roof Waterproofing Will Increase the Value of Your Property

By taking the necessary precautions to protect your home from water damage, you will also increase its value. Excess moisture causes damp and damp is tenacious. If not taken care of quickly and properly, the problem will persist. When you use professionals like Apex Waterproofing for damp proofing your home and waterproofing your roof, potential buyers will be more comfortable with their purchase, and more willing to pay what you ask.

3. Roof Waterproofing Will Decrease the Risk of Health Issues Caused by Mould Growth

Did you know that damp in your home can have a negative effect on your health? If you or one of your family members suffer from allergies or asthma, damp will worsen the condition. If you already have mould growth in your home, once you get rid of it, everyone’s health will improve significantly.

As you can see, it is highly beneficial for you to waterproof your roof. For a free quote from the best Waterproofing Company in Johannesburg, get in touch with Apex Waterproofing today! Our staff are friendly and knowledgeable and ready to assist you with all your roof waterproofing needs.

Waterproofing Techniques in Construction | Waterproofing Advantages | During Construction

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

What is Waterproofing?

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

In locations that experience high annual rains and occasional flooding events, water proofing is a must. It is very important for basements and structures to be water resistant especially in locations where the ground water table is high. In the case of high water table, water in the soil is likely to apply hydrostatic pressure on the basement floor and walls. This can force the water through the fractures, which can result in structural damages along with moisture-related issues such as mold, mildew and decay.

Throughout monsoons, all of us would have come across water seepages in the ceilings and walls or wetness in the after-effects of flooding. This is because of bad waterproofing By waterproofing your house, you can secure your structure from damage in addition to the important things inside your house from humidity and water exposure.

Read more about Roof leak repair here.

Advantages of waterproofing.

Safeguards the structural stability of the building
Prevents mold, mildew and decay
Avoids metals from rusting and wooden furnishings from decay
Prevents seepages from the ceiling and walls
Avoids dampness inside the building
Residential or commercial property value increases Home worth

Unhealthy living areas and a weak structure can significantly decrease the residential or commercial property value. Waterproofing increases the resale value of a building, which is perhaps among the biggest benefits. Investors/buyers barely even consider homes without waterproofing. Several homeowners live in houses with damp and leaking basements, often fearing the expense of waterproofing. Getting this essential workout done with brings noteworthy rate of return. A waterproofed basement increases the utilizable square video in a home, all at once ruling out the possibility of a looming structural failure.

Waterproofing Methods & Techniques

Brick Bat Coba Method

RCC slabs often establish cracks, which allows for a passage of rainwater. It is therefore important to develop water-proof roofing system pieces, which can offer leak-proof environment to the interiors of the building. This approach needs a roof surface slope for quick drain and sealing of all cracks and joints. Flat type roofing with RRC is used in environments with moderate to low rains. Coba treatment can be carried out directly on RCC or stone pieces.

Brick Bat Coba

The surface area of the roofing system slab need to be cleaned and washed with water before laying the very first course

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

The slurry is very first mixed dry and after that water is added till it reaches an uniform consistency.

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

Cement sand mortar is prepared by adding 1-2% very 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 on top of the thin slurry layer to acquire a 20mm thick cement mortar layer.

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

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

The grouted surface area is allowed to treat for 2-3 days to avoid surface area cracks.
Another cement sand mortar is ready (1 part cement, 5 part sand) with 1-2% very seal powder. Water is included till the mixture corresponds.

20mm thick layer of this mortar is spread over the brick bat mortar layer.
A trowel is utilized for completing. Square markings can be made by string or trowel. This is to avoid surface cracking due to growth or contraction in action to temperature change.

Curing 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 likely to seep into the structural slab overtime. In flat roofed balcony, the membrane is laid over a filler material that is sloped to ensure that water is receded by drainage pipes.

Sheet Based Membranes.

Sheet based membranes can be found in the kind of rolls. These are unrolled and laid on the firm surface area. One of the most common sheet based membrane is the bituminous waterproofing membrane.

Liquid Applied Waterproofing Membranes.

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

Polyurethane Waterproofing Treatment.

Polyurethane is made up of two parts, base and reactor. Polyol serves as the base, while isocyanide is the reactor component. The mix of both these in a specific design ratio creates a liquid finish for waterproofing applications. Polyurethane is a rather popular choice due to its ease of installation.

Waterstops.

Concrete joints are most responsible to seepage. Waterstops are components of a concrete structure that prevent the passage of water through concrete joints. They are created as fluid tight diaphragm embedded in or running along the joints.

Basement Waterproofing.

Apart from all these methods explained here, basement waterproofing demands proficient and skilled treatments. You can read more on basement waterproofing here.