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Posts tagged as “Waterproofing”

What Is a Cool Roof Coating?

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The term “cool roof coating” has gained some traction in the roofing and Roof Painting markets over the past few years. But what is a cool roof, actually, and who should consider applying it on their building’s roof?

Let’s Explore What A Cool Roof Coating Is NOT.

It is NOT insulation and its purpose is not to insulate, although it does have some insulating properties. Insulation is a material that forms a barrier to the flow of heat, and relies on its own physical properties, including its thickness, for its efficacy. In cold weather, insulation creates a barrier that primarily prevents heat from escaping the building through the roof.

What Does It Do?

It reflects sunlight off the surface to which it is applied, preventing it from entering the building. It also keeps the surface temperature of the roof sheets relatively low, resulting in much less wear and tear on the sheets themselves and the fasteners keeping them in place.

This is one of the most significant benefits of a cool roof. It presents a significant saving in terms of roof maintenance and replacement costs. The cool roof coating prolongs the life of your roof by up to several years.

We are an approved applicator of Reflective Coating Technologies’ Superflect, as well as a broad variety of other roof coatings. Additionally, to providing a comprehensive suite of industrial roof installation, repair and maintenance services.

Chemical Injected DPC for Rising Damp

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DPC (damp-proof course) in-between the brick work of a building during construction helps to prevent rising damp. However, older buildings do not have this system in place. Therefore, a chemical DPC can be injected to create a continuous chemical barrier against rising damp. Other than the costly and risky process of re-installing a physical DPC. Which would require the breaking down of the damp effected walls and re-building them to include DPC in-between the brick work. Chemical injections are the only method of DPC re-reinstatement that has stood the test of time.

DPC Inject Process

Once the plaster of the damp effected area is hacked off to expose bare brick, a series of holes are drilled into the brick work. The number and pattern of the holes is determined by the construction of the wall and its thickness. The plaster is then replaced with a waterproof salt retardant plaster before starting the process of acrylic and painting.

This system is normally best suited for brick or block buildings, as these types of structures are generally more stable. However, it may not be effective if any gaps are left in the wall construction. Or if gaps form over time with material deterioration.

Damp in some older buildings may be caused by a leak or a defect in the wall construction (such as a cracking, rather than by rising damp). Therefore it is important that any defects are identified and corrected prior to accepting the cost and disruption of chemical DPC injection.

If you are facing any damp related issues such as Waterproofing, and you're not sure how to choose the right treatment procedure, get in touch with the team at Apex Waterproofing and Damp Proofing Johannesburg for a free quote today!