FAQ: My roof isn’t leaking. Why would I need to maintain my waterproofing membrane?
Your roof may not be leaking , but that doesn’t mean that your waterproofing membrane may not need some attention. One of the most common problems is build up of dirt and debris which can block outlet pipes. A roof which in normal circumstances wouldn’t leak. But, if it suddenly fills up 200-300mm deep with water, moisture could easily find a weak spot in the waterproofing and penetrate into the building structure. Other common problems include weathering related wear and tear to the waterproofing which could cause cracking at outlet pipes and around protrusions. Trades such as electrical, DSTV, camera and fibre installers don’t respect waterproofing layers. Thus, they often cut it or make holes in it in the course of their repair or installation duties.
FAQ: I don’t have budget for waterproofing maintenance. It’s a bad time.
Please contact a Waterproofing Contractor. There are various options available to overcome this. The Waterproofing contractor can in the meantime inspect the roof to assess the urgency of any work needed. If everything still looks fairly good, the job could be delayed for a few months and done at a later stage once the funds are available. Payment plans are an option with instalments over over 2-3 months.
FAQ: How will it affect my guarantee if I don’t undertake the maintenance on my waterproofing membrane every three years?
Technically this does render your guarantee null and void. However we are seldom so hard and fast with this. But the client does have certain obligations in caring for the roof, and it would be unfair to expect the Waterproofing Contractor to come back and repair problems, when the client hasn’t upheld their responsibilities.
FAQ: Can I not paint the roof myself or get my gardener to do it?
You could, but there is more to the maintenance than just applying a coat of aluminum paint. We are trained to inspect specific key areas on your roof that need assessing and resealed as necessary. Specialist equipment is required to undertake repairs which the average client doesn’t have.
FAQ: Will the Waterproofing layer last for the guarantee period if I don’t do anything to it?
Yes it will, but it could substantially shorten the lifespan of the waterproofing layer. Just like a car engine. You could easily drive a car for 100 000km without servicing it. However, not changing oils and filters will not make the engine last as long as it should. Likewise with the waterproofing, if it is not properly covered with the aluminum reflective and protective coating, the UV rays harm the bitumen and the essential oils in the waterproofing layer. Thus, resulting in drying out the membrane and losing its performance properties.
FAQ: The aluminum paint looks absolutely perfect and definitely doesn’t need to be repainted right now.
Depending on the roof design and type of waterproofing and batch of paint used, the performance of the aluminum coating can sometimes exceed expectations. Please contact us, the specialised waterproofing contractors to do an on-site assessment. If your aluminum is in perfect condition, only critical roof details will be inspected and the aluminum will be assessed again in a year or twos time.
FAQ: The aluminum coating seemed to deteriorate in a very short space of time.
This does infrequently happen for a variety of reasons. If the water run off of the roof is poor, the aluminum will deteriorate in the areas where water stands. Sometimes the bitumen base of the aluminum coating can be of variable quality and some batches perform better than others. Bitumen is a by product of the oil industry. Thus, although manufacturers strive to do there best, sometimes they have no option but to use what bitumen base is available at the time. Additionally, waterproofing laid onto lightweight screeds or wooden boarded roofs has more thermal movement. Thus, reducing the lifespan of the aluminum coating.
FAQ: What are the manufacturers recommendations regarding the care of the torch on waterproofing layer?
All major manufacturers and suppliers of torch on waterproofing membranes recommend their products are inspected every three years. There are some exceptions, such as when the waterproofing has a mineral chip weathering surface. But even they often don’t see out the full 10 years without some type of protective coating.
For more information about waterproofing, please see: Damp Proofing