sound proofing & insulating

[geordie]

looking at sound proofing and insulating the van there are a lot of product out there.
whats the best value for money plus best way and advise would be grateful.

Geordie

 

[Resto-raider]

For the roof definitely the cheapest and one of the best options for the roof is eggshell foam. You can buy it at the local hardware store and costs next to nothing.
Just the tip to glue it very well because you don;t want it to come loose after you installed the headliner.

For the rest of the van one of the best options is Dynamat, but this is also by far the most expensive.
I used bitumen pads on all large metal sheets and behind the side panels I put in styrofoam. Also very cheap at the local hardware store.
The result is pretty good.

 

[geordie]

dynamat do you cover the whole area or just patches this question is in relation to floor and side panels?

 

[Bluesnailman]

With dynamat type products your objective is to reduce noise from vibration. I found through experiment that about 1/3 coverage sorted things out. Buy plenty, then drum against the panel, fit some, drum again and see what the difference is. One of those things where there's a balancing point between effort, cost and noise.

However, I'm still getting quite a bit of droning so am going to put a layer of 25mm of this stuff on the upper side of the engine bay and ahead of the petrol tank

http://www.easyfoam.co.uk/fireseal-acoustic-foam.php" onclick="window.open(this.href);return false;

 

[geordie]

Thank you for the advice and links really helpful.

i like the look of the 25mm sound proofing so are you fitting it in side the engine bay or on top.

 

[Bluesnailman]

With dynamat type products your objective is to reduce noise from vibration. I found through experiment that about 1/3 coverage sorted things out. Buy plenty, then drum against the panel, fit some, drum again and see what the difference is. One of those things where there's a balancing point between effort, cost and noise.

However, I'm still getting quite a bit of droning so am going to put a layer of 25mm of this stuff on the upper side of the engine bay and ahead of the petrol tank

http://www.easyfoam.co.uk/fireseal-acoustic-foam.php" onclick="window.open(this.href);return false;

 

[magoo]

looking at sound proofing and insulating the van there are a lot of product out there.
whats the best value for money plus best way and advise would be grateful.

Geordie

There is quite a lot on the forum already if you have a quick search. Various opinions on the best products, the cheapest method is roofing tape, but I personally wouldn't have bitumen based products because they smell and melt. I used Silentcoat which is a cheaper version to the branded Dynamat and comes in 2mm and 4mm thickness. Sheeps wool offcuts are cheap and can act as a good replacement for the original VW insulation, but some people believe that it is a moisture trap. I didn't bother with heat insulation as the large windows defeats the purpose, so reducing panel vibration is your best option. 25% coverage on each panel is all you need, but it reality it only changes the pitch of the vibration to something a bit more comfortable. Happy reading.

 

[bmxburner]

I found the butyl based tape Sika Multiseal to be a cheap alternative to Dynamat/Silentcoat - 2mm, easy to use, odourless - still effective at vibration dampening. Was on special offer at Screwfix when I got it.

On top of that I put foil faced adhesive insulating foam from Woolies. This went on all over and cut the noise down again.

I plan to fill the wall cavities with recycled plastic type insulation from B&Q before fitting plastic sheet and the trim panels back on.

 

[Manxfella]

I bought my sound deadening stuff from these people:

http://www.classicacoustics.co.uk" onclick="window.open(this.href);return false;

They were the cheapest & sell unbranded foam, they couldn't of been more helpful.

Also sell fire retardant 25mm foil backed for the engine bay.

All in all, they were half the price of Noise Killer.

 

[geordie]

Thanks everyone

i got some reading up to do.

Geordie