How to do waterproofing of concrete roof- Dr Nanita of Centurion

Introduction

Maintenance on properties with flat concrete roofs tends to be neglected most of the time. Seeing that the weather also plays hectic games with these roofs. Here we are thinking of the sun heating it up and UV beams accelerating the deterioration of waterproofing material. Cracks form and water seeps in forming damp underneath the waterproofing and mould starts to grow.

Description

This site is a textbook example of what happens when maintenance on a concrete roof is neglected. Subsequently, waterproofing will dry out and start to crack. Adding rainwater to the mixture lends to the lifting of such waterproofing. This was exactly what was seen here.

Problem/situation

What was found was that years of attack of the sun, as well as UV attack on the waterproof material, dried it out. Cracks formed and water was able to enter. We already see waterproofing lifting and the growth of mould.

Possible outcome

Leaving the decay to carry on will compromise the roof. More mould will grow with the unfortunate medical consequences and expense associated with it.

Suggestion

It was highly recommended that all waterproofing material on the roof be removed. A thorough cleaning process will get rid of any loose particles and dust. The new layer of waterproofing must then be attached to the roof by means of the torch on the process. Applying a UV resistant coat of paint will protect the waterproofing which in turn keeps water away from the concrete.

Decision with customer/owner

With the customer giving the green light work could commence. The team of workers moved in the next day to start.

Work was done

It was a very time-consuming process removing the old redundant waterproofing. The cleaning process commenced as planned. All dust and debris removed and remaining dust washed off with a power hose. Leaving the concrete to dry for a day and came back to finish the job. A new layer of waterproofing was torched on with great care not to leave air pockets. With a fresh coating of UV resistant paint, the torch on waterproofing and the concrete roof was good for some time to come.

Cracked waterproofing on concrete roof

Water damage  on concrete roof

Preparing of concrete roof  for waterproofing

Removing damaged waterproofing on a concrete roof

Preparation for waterproofing of a concrete roof 

Waterproofing in progress on a concrete roof 

Waterproofing and painting done on a concrete roof 

Concrete roof waterproofed and painted

Result 

A concrete roof that was waterproofing and has a fresh coating of paint is a site to see. It will last a long time.

Outcome

This concrete roof is now ready to face the onslaught of the sun and bad weather alike. With a 5-  year guarantee on all workmanship and materials, the owner was very happy to take the property in possession. Dr Nanita's concrete roof that's been proudly waterproofed, painted and ready for the raining seasons.

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