Box Gutter Waterproofing
Waterproofing a Box Gutter
Box Gutter Waterproofing is specialized. More than 90% of commercial/industrial Roofs have Box gutters that are designed to redistribute water away from roofs. Most commercial landlords experience the complete opposite. Blocked gutters can pool water in gutters causing them to rust and allow water to ingress. Water leaks destroy masonry compositing and building structure. Leaks from Box Gutters are known to destroy product or work environment is under the roof. This can cause thousands of rands damage to building and even interrupt work flow.
Over all the most cost affective long term waterproof solution is our flagship Waterproof Lab Gutter Wrap System using Firestone RubberGard EPDM. Waterproof Lab has laid 7.5km of gutter in our South African market thus far – with incredibly results and extremely satisfied customers.
Rain Gutter Waterproofing
The system allows us to save the landlord money. Some benefitsof Rain Gutter Waterproofing
- No need to replace the existing gutter – simply line the gutter with Waterproof Lab’s Firestone RubberGard EPDM
- No seems – Larger rubber sizes (6m x 30m) which allows you to line gutters 30 meters long without a seam
- Easy to apply – all you need is a silicon roller, Waterproof Lab’s EPDM Rubber
- Safe to apply – unlike bituminous membrane TPO no torch on, flame or hot air required. The EPDM is adhered to the gutter.
- Membrane can mould to the gutter shape easy because of the flexibility of the rubber.
- Waterproof Lab’s EPDM is totally water resistant and can with stand pooling of water.
- Waterproof Lab’s EPDM has stretch so it can withstand gutter movement at the joins (in excess of 300%)
- It most outstanding feature is that is UV resistant and needs no protection layer hence no maintenance cost to the landlord
- Gutter inlet and outlet pipes are catered for in the flexible system. Often a big area of water ingress with competitive competitive products
- The system allows for aluminium termination bars (with allow nails and watermastic) should the EPDM need to be secured against an up stand wall or similar.
- The system allows for wooden gutters too.
- Damage could easily be repaired should it be necessary.
- Waterproof Lab offers training and distributes customised sizes to the Landlord, architect, engineer and contractor.






Projects
Tygervalley Centre
Waterproof Lab was contracted to seal a leaking box gutter above one of Tygervalley Centre’s anchor tenants. The failed waterproofing was removed and replaced with EPDM – a strong advantage of using this waterproofing system in this application was the waterproof membrane’s high UV resistance to the strong African sun and the fact that we could terminate the membrane against the vertical wall of the parapet with aluminium termination bar.


Frequently Asked Questions



Firestone RubberGard EPDM would be highly recommended as the best advice to solve your problem. The beauty about using this system is that there is NO pap and lap. The membrane is factory cured and we adhere a rubber membrane all alongside the upstand and length of your gutter. Most time we will seal an entire 30m length gutter with rubber membrane and no seems hence reducing the risk of membrane join leaks (See below for application advice);
Most waterproofing systems on the market do not cater for the African Sun high UV. Also most systems cannot take pooling water. Firestone RubberGard EPDM meets both criterias making it a most superior waterproofing system for your Roof Gutter. Please see explanation, below;
EPDM is a strong, highly flexible rubber membrane, with minimal seams (joints) which is designed as a reliable medium for sealing gutters & many other waterproofing problems. Its African Sub UV friendly and not protection is needed after application to protect it from the UV. The long seemless RubberGard installation poses less risk for wateri ingress through incorrect seeming done by contractors hence minimising the risk of leaks. Once applied it is known to outlive the roof and the gutter. (See methodology below);
In some instances this might be necessary. However, in most cases depending we recommend unscrewing the roof sheets from the purlins and tucking the Waterproof Lab RubberGard membrane under and refastening the screws. This eliminates the necessity to go through the expensive procedure of removing your roof and gutter. In short Waterproof Lab’s Firestone RubberGard membrane will save you thousands if not hundreds of thousands of rands in a case of a big roof.
This is a simple procedure, which is covered In detail in the methodology below; Also see the videos on Waterproof Lab’s website
Because EPDM comes in rolls measuring 6m wide x 30m long, it is possible to cut a piece to exactly fit your gutter, thus eliminating the necessity for joints. (see methodology below);
Your question has been addressed in full, in the methodology below but yes, the membrane can breach rusty holes;
Yes. This system is designed to save the landlord money. The product is world class and backed by one the the strongest internation brands in the industry, namely Firestone Building Products The methodology below is tailor made for your solution.
Testimonials
Testimonial:
Here is my experience with your wonderful company:
For years I’ve struggled with a leaking Eco pool. It’s been especially troubling with South Africa’s water shortage. I was sold a so called high end epoxy coating, which cracked, and I spent countless hours trying to fix cracks with various products. Nothing worked for a very long time. I wasted a lot of money. A number of people recommended Waterprooflab in Cape Town.
From the first call to final delivery this company has been incredible. They have an extraordinary product called Epdm. I’ve not had the slightest leaking since. It was a great pleasure working with the team who are passionate and hard working. I initially wanted to install the Epdm myself but after seeing what the team did I’m very glad I never attempted this, it requires great skill and care. The product and the intense labour required is not a cheap quick fix, it’s a reliable long term solution.
If I’d started with Waterprooflab I would have saved myself an enormous amount of trouble and money. The company has an excellent follow up policy and immediately attended to questions I had after the job was completed. This is a great company, world class service, product and expertise.
For years I’ve struggled with a leaking Eco pool. It’s been especially troubling with South Africa’s water shortage. I was sold a so called high end epoxy coating, which cracked, and I spent countless hours trying to fix cracks with various products. Nothing worked for a very long time. I wasted a lot of money. A number of people recommended Waterprooflab in Cape Town.
Craig Foster
Filmmaker & Human Star of the documentary: My Octopus Teacher
Testimonial:
I have used Waterproof Lab on two occasions recently and have been very impressed with their service and expertise on both occasions.
In August, 2018, Waterproof Lab repaired a flat roof over a stoep, and lined a water feature at my house, that were both leaking. The flat roof was originally waterproofed with ‘Torch-on’ some 20 years ago and has leaked numerous places over the years.
Each time, the same product was used to repair the waterproofing, without permanent success.
It seems to be an inferior product, which is difficult or impossible to install on any flat roof that is slightly difficult, despite my using the most highly recommended installers (5 different firms over the years!).
I finally decided to try the EPDM product, based on published reviews and chose Waterproof Lab as the installer.
They impressed me at being extremely efficient at installing the product – and I am renowned for being difficult to please! I have had no Problems since then.
At the same time, they lined a water feature that was leaking – the builder had waterproofed it with a liquid product, that did not live up to to it’s s upposed claims. Again, the EPDM has shown no signs of leaking since it was installed.
Based on my satisfaction with their work at my house, In October, 2018, I asked Waterproof Lab to provide me with expert opinion on major Water leaks that have been occurring at a new block of apartments, Hugon Place in Claremont, of which I am a Trustee. They pointed out numerous problems that the builder/developer & well-known waterproofing company had failed to identify to us, or address properly, and the latter are currently attempting to fix these problems – which they have not managed to solve during the previous two years. Again ‘Torch-On’ had been used at this site; if it leaks again, I will be recommending to the other Trustees, that we appoint Waterproof Lab to install EPDM.
I would highly recommend Waterproof Lab for their expertise – from their expert advice, I would doubt that there is anyone in South Africa more knowledgeable than them – excellent service and what appears to be a much superior and more reliable product.’
I have used Waterproof Lab on two occasions recently and have been very impressed with their service and expertise on both occasions. They impressed me at being extremely efficient at installing the product – and I am renowned for being difficult to please! I have had no. Problems since then. I would highly recommend Waterproof Lab for their expertise – from their ...
Adrian Allardice
Testimonial:
Bruce & I would like to highly recommend your Company for its standard of workmanship & attention to detail, from the time we contacted you for assistance, to the time you handed us a not inconsiderable bill for work well & successfully completed.
As you know, we had endless trouble in trying to find a solution to the problem of stopping our continuously leaking low pitch flat roof, to no avail. Since 2000 we have been trying everything to alleviate our distress during rainy weather & it was only after contacting Waterproof Lab, that you managed to solve our problem for us.
The EPDM membrane which you guys applied in February, 2019, is the only solution that has finally worked! It’s such a weird feeling now when it rains, I don’t have to rush around putting drip catchers all over the house. It’s not cheap, but it does work….
And you’re also all such nice guys!
We’ve had ZERO issues with the section you did last year. Bruce recently completed the Polycrete on the remaining corrugated sections, but is not yet convinced that we need the membrane – time will tell, we may need you to come & quote after winter!
Thanks once again for helping us to overcome our nemesis.
We’ll recommend you to all our friends & acquaintances.
We highly recommend Waterproof Lab to our friends and acquaintances for your standard of workmanship & attention to detail.
The EPDM membrane you installed, is the only solution that has finally worked! It’s such a weird feeling now when it rains, I don’t have to rush around putting drip catchers and most of ...
Bruce & Vanessa
Testimonial:
Water started seeping into our spare room after a crack formed in our wall following road construction.
We faced a potentially extremely costly and disruptive repair, but Waterproof lab were recommended to us through our plumber and we asked them to consult on the best solution.
The team were incredibly generous with their time, doing a few site inspections before coming up with a proposed repair plan. It was not an easy repair as required working with a number of contractors over a short period of time.
The team were always professional and on time, got the job done efficiently and with really good, quality results. We have had no issues following the use of the RubberGuard membrane, even during the most torrential rain. Thank you Waterproof lab for your excellent service, we would definitely use you again for any waterproofing needs!
Waterproof Lab were always professional and on time, got the job done efficiently and with really good, quality results.
We have had no issues following the use of the RubberGuard membrane, even during the most torrential rain.
Thank you Waterproof Lab for your excellent service, we...
Catherine Bothner