Community Forums

BA-in-Mich · 07-21-2011, 03:58 PM

I am looking to sound proof under the dog house. But i am concerned about the temperatures that develop under there. Anybody ever measure this? Is 250* reasonable? Does it get hotter than that? I know I have some exposed wood right there and that will get covered also. After all of these years there seems to be no degradation of the wood. I am looking at JC Whitney for the kit to do it with.Complete Insulation Kits - JCWhitney

TXiceman · 07-21-2011, 06:19 PM

This is what I used on our 1999 Minnie Winnie and what a difference. Lots less heat and a bit less noise. Don't worry too much about under the house temps of 250 degF.

Where do you have wood under the engine cover.

ken

pwf16129 · 07-21-2011, 07:49 PM

you can buy header wrap from several different places like summit or jegs and you can wrap your exhaust and that will drop the temp tremendously i have used it on several applications it will bring the surface temp down to where you can touch it without damaging your skin it will be uncomfortable but will not hurt you. so it will keep the heat in the exhaust they also offer several different products that reflect heat back into the engine bay thus dropping the inside temp.
this plus some sound proofing is on my to do list once winter sets in for our class c we'll just live with it until then

happy rving

Go Dawgs · 07-21-2011, 11:22 PM

I have read on this site and others that the kit from JC Whitney's is good. I have not done it to mine, but will be doing so this fall. Spent money on a tune-up instead. Let me know how it works.

Arnold

frankdamp · 07-22-2011, 09:13 AM

It depends a great deal on wht engine you have. An older carburated Ford 460 will get way above 250 degrees under there. Our '85 rig used to heat up the doghouse to where it would soften the soles of your shoes and that was with an extra layer of foil-faced fiberglas insualtion I put in.

Ernie Ekberg · 07-22-2011, 02:48 PM

Used Whitneys insulation and foil tape for years- excellent results

BA-in-Mich · 07-23-2011, 12:30 PM

Quote:

Originally Posted by TXiceman

This is what I used on our 1999 Minnie Winnie and what a difference. Lots less heat and a bit less noise. Don't worry too much about under the house temps of 250 degF.

Where do you have wood under the engine cover.

ken

The whole top lid is made out of 5/8" plywood with a sheet metal type layer on the under side. Where the top lid meets the base, that is all exposed wood. I have always looked at that and wondered, but everything considered it seems to be fine. My main thing is to cut out sound. I am thinking about double layering for the sound aspect of things. Heat inside has never been an issue.

Ernie Ekberg · 07-23-2011, 03:11 PM

If you double layer, make sure there is enough clearance. That will add considerable weight to the doghouse lid, also.

leadman · 07-24-2011, 12:48 PM

A previous owner of my MH used spray foam under the engine cover of our '88 Itasca. No problems with the foam.
When I replaced the radiator I used the foil lined bubble wrap type insulation from Home Depot in the areas surrounding and in front of the radiator. Really cut down on the noise as this was sheet metal with just the carpet on the inside. Only made one trip so far but no issues yet.

Ernie Ekberg · 07-24-2011, 03:16 PM

Sounddown company makes sound deadening material also.

DeOrellana · 08-03-2011, 01:37 PM

I just did mine last weekend. What a difference! I can hear the stereo now.

Idle volume dropped from 81dB to 73dB measured directly on top of the doghouse. At 90kph (55mph) it was down to 78dB. Sorry, but I forgot to measure the at speed volume before. By comparison, my Mercedes wagon measures 74dB at speed.

I took a bunch of pictures of the work. I'll do a write-up when I get some time if people are interested.