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In this section we share and discuss various technical advise that help fellow campers in general or regarding specific questions.

Re Waterproofing Cotton Canvas tent roof

replies: 21
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23 Mar 2020 @ 12:27:39 pm
Badger
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Has anyone had any experience of re waterproofing a Cotton Canvas Tent roof. I have used Spirit Vinegar to kill mold Spore and a washing mix to remove spoer residue made up of 100ml bleach, half a cup of OMO in 5 litres of water to scrub off residue. Rinsed well with hose and left to dry for two days in the sun.

The result........ a very leaky tent roof,     Help

 

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23 Mar 2020 @ 12:55:50 pm
Paddyandpaul
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Brian im sure all the chemicals and Omo you have used will make the tent leak. We are always advised not to use detergents to clean canvas tents.
Now you must just buy the canvas waterproofing chemicals from a camp shop and paint it on with a brush or roller. Note they have 2 different waterproofing chemicals for nylon and canvas tents. Probably easier to paint on the waterproofing with the tent erected but you will probably need a broom handle to reach far enough.
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23 Mar 2020 @ 14:14:50 pm
Badger
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Hi Paul,

Some things you learn the hard way!  I actually got the whole process off  of the web. Obviously not the best advise I have ever had, or just poor application.

I contacted Skipper, their suggestion was apply Nuseal or buy new canopy for around R5800.00  A bit pricey.

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23 Mar 2020 @ 14:48:52 pm
HM
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I also recommend Nu-Seal.

But if you want to save money.

Mix 1 litre wax floor polish with 2 litres paraffin and use a hand spray to apply. Brush area just sprayed with a paint brush to spread evenly. Leave tent pitched overnight so some of the paraffin smell goes away (although there is not much smell and it does keep the mice/bugs from eating your canvas).

The Happy Campers.
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23 Mar 2020 @ 15:53:26 pm
Relaxed Camper
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Jy kan hoor of Tentco jou kan help. Laas toe ek daar was, was daar klomp verskillende tente gewees. By navraag het hul vir my genoem dis kliente sin wat hulle weer moet waterproof. 

Maar as ek na HM se raad hierbo lees, klink dit baie eenvoudig en gaan baie minder kos om sy roete te volg

WAARSKUWING:

Kampeer is aansteeklik en verslawend 😁
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23 Mar 2020 @ 17:07:41 pm
Paddyandpaul
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Hm does the parrafin not leave a smell? Would rather spend the money on Nuseal.

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23 Mar 2020 @ 18:47:34 pm
KD
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I have just applied NUPROOF to the top of my tent roof. WWW.CAMPMOROUTDOOR.CO.ZA

I applied it with my old electric spray gun. I thinned it with mineral turpentine. It took less than 30 minutes. The smell was gone in a couple of hours. No staining. I would definitely get the 5 litre tin. It may even be possible to spray it with a garden spray gun as it is the consistency of water.

Does it work. No idea. My trip to the Western Cape didn't happen. 

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23 Mar 2020 @ 21:46:23 pm
Badger
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Thank you for all your council, think I will as suggested by Geert, start by speaking to Tentco who also appear to have several water proofing products.

If they can I may also have them do the job as I have no place to erect and dry the tent at home. if there are any more suggestions I would like to have them as well.   THANKS

PS. I guess the shut down is going to put us all out of action for a while,  Good luck to all.

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24 Mar 2020 @ 13:54:05 pm
Paddyandpaul
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Brian how old is your Skipper. Im a bit concerned your canvas was mouldy and leaked and your Skipper is not that old.

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24 Mar 2020 @ 14:25:31 pm
mulderpm
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I was advised by an expert who does this as a business not to ever wash the cotton canvas with any solvents or detergents. Just high pressure hot water. 

Anyway you can try to reseal with cotton reseal like Nuseal. To get an even coating the best is to spray it on. Else brush it on and when dry test for waterproofing with a sprinkler. The first time wetted it may leak but let it dry and try again. The fibers should swell in the first round and remain sealed. If this did not work you know what the alternative is.

Good luck.

Groete,
Paul
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24 Mar 2020 @ 17:26:36 pm
Badger
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Hi Paul,

I got the van new in September 2016, I do believe that the leaking problem is of my own making. The tent remained folded for around 10 / 14 days during a prolonged period of rainy weather which resulted in the growth of the mold.

I am getting to the point where I am questioning the use of Cotton Canvas as roofing material for caravan awnings and tents in South Africa. There are alternatives.  AH !  but that's another discussion altogether.

 

 

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24 Mar 2020 @ 18:15:36 pm
Chuck Norris
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Klink na baie werk, en jy het nou 21dae om dit te doen.

Geen haas nie.

 

As jy wil he jou drome moet waar word, moet jy eers wakker word.

Die jonge Fransies. (Parys - Frankryk)
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24 Mar 2020 @ 18:20:37 pm
Chuck Norris
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Klink na baie werk, en jy het nou 21dae om dit te doen.

Geen haas nie.

 

As jy wil he jou drome moet waar word, moet jy eers wakker word.

Die jonge Fransies. (Parys - Frankryk)
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24 Mar 2020 @ 22:19:41 pm
Proffie
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Brian,

Please keep us posted on how you decided to go about it after you talk to Tentco and what the results were.

Always good to keep such info (factual stuff) for later use or advice.

Trust you come right.

Jesus saves all who do the will of the Father Matt 7:21-23
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26 Mar 2020 @ 21:41:58 pm
Badger
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Dankie Proffie,

I do not have place to even attempt this project, so I will farm it out. I have spoken to "TENTCO" they only supply the product for re waterproofing and do not undertake to do the job. They did however give me the name of a company that do this sort of thing.

As soon as the lockdown is finished I will get going again.... Will let you know.

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27 Mar 2020 @ 09:46:27 am
Leon
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Nu proof or Nu seal are a wax based product of which the parafin keeps the wax soft for easy application.

I revamped two 3 x 3 m tjopper tents by using the older product Nu-Proof. Cleaned the tents properly, then stood them in the sun to dry out completely.  Painted the Nu-proof on with a large paint brush.  Paint it in sections as quick as possible and finish a complete panel before you stop to rest or else you will have sections clearly visible on each panel.  Electric spray gun would probably make this easier.  I would advise to paint the stitching and seams with a brush to make the coating there thicker.

You will have a strong parafin smell.  Again stand the tent in the direct sun so that the heat dries out all the parafin.  The smell will go away as well after two to three days.  The product not only seal the canvas properly it also gives the material a new darker look.

Fact is you must have space available to do this.

 

Sonder Jesus is ek niks! ! ! !
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27 Mar 2020 @ 13:25:56 pm
mulderpm
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Brian, I am not keen about cotton canvas for roofing but it works fine for sides. The Jurgens range does not have cotton canvas roof's. It is like a rip stop canvas. Totally water proof. I believe it is imported from the Netherlands and costs about R450 /meter x 2.5 meters wide. Hayford Traders keeps similar in stock. This material is not porous at all, so staining is less likely and is more washable/wipable but I would still not use detergents on it. I have removed bat droppings and tree gum by soaking the area in hot water. There is still a small mark but it cleans very well.

Never store a wet tent of any material. Open it as soon as you can.

Groete,
Paul
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28 Mar 2020 @ 17:07:32 pm
Fred
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Real cotton canvas is regarded as superior to ripstop but I believe it is more expensive.  That is probably the reason why most tent makers, including Skipper, have switched over to ripstop. But both materials have their pros and cons and I suppose the opinions might differ. Canvas is more supple and takes a beating from the weather, especially the sun  better but ripstop is 100% water proof and cheaper.

I had a problem with mold on our Sprite's roof canvas.  I removed the mold by washing and scrubbing with detergent and water.  I was wary about using bleach which might have stained the canvas.  I then treated the canvas with Nu-Seal and the result looked like new and was water proof.  I also in the past used beeswax on the rally tent, melted and diluted with turps to a liquid form  which also worked well.  Beeswax is very durable but expensive and not easily obtainable.  Other wax like that used to make candles might also work- Nu-Proof after all is wax diluted to  a liquid form. The liquid used for diluting in all cases evaporates leaving only the wax behind.

It should be ideal if no re-waterproofing was necessary as any wax is combustible and therefore poses a fire risk, but that is a risk you are forced to take.  I believe new canvas is not wax treated.

Het is beter rijk te leven dan rijk te sterven
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30 Mar 2020 @ 19:49:29 pm
Badger
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Again , many thanks for all of the tips and advise, the worst thing about all this is I have always enjoyed doing these jobs myself, but at this time I jus dont have the place.

When the lockdown is over  I will report back on this matter.

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30 Mar 2020 @ 20:43:05 pm
HM
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That's a pity. You could have saved yourself a lot of money making your own tent sealer as explained on 23 March.

The Happy Campers.
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31 Mar 2020 @ 07:06:16 am
Relaxed Camper
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Dankie Proffie,

I do not have place to even attempt this project, so I will farm it out. I have spoken to "TENTCO" they only supply the product for re waterproofing and do not undertake to do the job. They did however give me the name of a company that do this sort of thing.

As soon as the lockdown is finished I will get going again.... Will let you know.

Strange....maybe they stopped doing that, because last year September there were about 4 or 5 tents erected at the back of building on that small grassy area. I asked them if it was tents they were selling...they answered: No, its tents we busy waterproofing for clients.

Maybe you can try Canvas and Alluminium Concepts....they are situated on the premises of Kempton Caravans

WAARSKUWING:

Kampeer is aansteeklik en verslawend 😁
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01 Apr 2020 @ 22:06:10 pm
Badger
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Hi Geert,

A good Idea, I had them make a small overnight awning for our Skipper, they may be able to help.

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