Dust Proofing a Caravan ?

Submitted: Monday, Jun 19, 2006 at 08:12
ThreadID: 35053 Views:9434 Replies:9 FollowUps:3
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Would someone let me know how to Dust Proof a caravan for traveling long distances on dirt and dusty roads ?

Thanks

BBB
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Reply By: Hairy - Monday, Jun 19, 2006 at 10:23

Monday, Jun 19, 2006 at 10:23
After makeing everything seal as good as possible try pressurising your van with clean air. Set up a 12v fan that draws air in through an air cleaner and in to your van. With this running no dust should be able to get drawn in as clean air will be getting blown out of any leak.
Does that make sense?
I have seen fans ( inline extractor fans) that fit inside of 100mm pvc before, might be able to use something like that.
Good luck
cheers
AnswerID: 179167

Reply By: pjd - Monday, Jun 19, 2006 at 10:26

Monday, Jun 19, 2006 at 10:26
there are to many places for dust to get into caravans so you could never find them all & it must be vented by law anyway in case you have a gas leake
AnswerID: 179168

Reply By: Member - Andrew W (VIC) - Monday, Jun 19, 2006 at 10:44

Monday, Jun 19, 2006 at 10:44
just fit a spring loaded pressure vent high up on the front of the van, close everything else and open it when you are travelling.
Readily available from any good van dealer.
AnswerID: 179170

Reply By: Notso - Monday, Jun 19, 2006 at 10:51

Monday, Jun 19, 2006 at 10:51
re the pressure vent,

I have just put one in my new van and the total cost was around $80.00. Any half competant handy person can do it.

have a chat to your local caravan parts place, or get on to Camec.

AnswerID: 179173

Reply By: StephenF10 - Monday, Jun 19, 2006 at 11:44

Monday, Jun 19, 2006 at 11:44
A roof mounted pressure vent is the most effective single thing for keeping dust out. It scoops clean air from above the "dust line" into the van and maintains a constant positive pressure inside. The system is more effective if you block off the door and fridge vents while you are travellling. If you run the fridge when travelling leave the external fridge vents clear but block off any openings around the fridge inside the van.

Bear in mind that it will also scoop in dusty air from leading and passing vehicles, as well as rain and bugs. Some people make up a little filter for it.

Stephen.
AnswerID: 179181

Reply By: Member - Vincent A M (NSW) - Monday, Jun 19, 2006 at 12:05

Monday, Jun 19, 2006 at 12:05
the best is to pressurize your Van with a fan with a filter (many types avalible) from big radiator types to small computor type 12v fans (remember to clean the air filter as most fans will get very hot (fire) if they can not breath & try to fit the inlet as high as posible so it can braeth as clean as possible
AnswerID: 179187

Reply By: BBB - Monday, Jun 19, 2006 at 14:00

Monday, Jun 19, 2006 at 14:00
Thanks for all the sujestions

I have two four sesion vents if you traveld with one of the flaps open it should do the same as the vents that are sujested.

They may not be strong enough to hold the presure at speed. But if they are it is one less penitration in the roof whitch is one less potenshall problem.

Has any one tryed this ?

What do you think

BBB
AnswerID: 179225

Follow Up By: StephenF10 - Monday, Jun 19, 2006 at 16:35

Monday, Jun 19, 2006 at 16:35
BBB, you are right - the Four-Season vents probably won't work at speed. They are made for normal breeze blowing over the van when stationary and you may damage them if they are open at highway speeds. Best idea is still the pressure hatch. They are designed to do exactly what you want.

Stephen.
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Reply By: Member - Ross (NSW) - Monday, Jun 19, 2006 at 15:38

Monday, Jun 19, 2006 at 15:38
BBB,

Correct term for the roof vent is "scupper". They are very successful. No harm in trying the four season vent flap.

Regards
Ross!MPG:8!
AnswerID: 179250

Reply By: Motherhen - Monday, Jun 19, 2006 at 23:35

Monday, Jun 19, 2006 at 23:35
While most suggestions are to pressurise (i have no experience of this), you may only have a couple of spots dust can get in. We put a thick square of foam rubber in the four seasons hatch. Any leaking joins or places such as around gas pipes can be siliconned. Don't know about your fridge, but ours are vented to the outside, but sealed so that dust cannot get through to the caravan. Door vent is our only real dust point, and a simple sheet of foam rubber when i get some should stop that too.
Motherhen

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AnswerID: 179369

Follow Up By: BBB - Tuesday, Jun 20, 2006 at 19:12

Tuesday, Jun 20, 2006 at 19:12
How do you attachthe fooam to the four seasons hatch ?

Thank You

BBB
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Follow Up By: Motherhen - Tuesday, Jun 20, 2006 at 21:55

Tuesday, Jun 20, 2006 at 21:55
Hi BBB

We have a square of foam about 5" thick that just fits up into the gap, as we have a ledge that holds it in. Yours may be different. I can't remember if it was different in our previous camper van - that was an old wind up van that did let in lots of dust, mostly through the 4 seasons.
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