Thread: cheap sound deadening

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i have been looking and thinking about a good and cheap way to cut down on the sound in the cab of my 27 chevy pickup.
i looked at dynamat and the asphalt roofing sheets some folks have used.
i have four demands of whatever i use
1 super cheap
2 it cant soften in the brutal heat of the southwestern u.s.
3 it cant stink
4 it needs to actually work
it is my understanding that the sound deadening is achieved by cutting down on the harmonic vibrations of the sheet steel (among other things)
then i had a brainstorm.
last year i repaired a mobile home roof with a rubber based patching material that dries into a fairly hard but flexible rubber (think tennis shoe sole)that doesnt melt in the sun.
it is applied with a trowel.
so i am going to use this stuff.
i paid $12 a gallon.
trowel some onto the inner roof and doors as well as everywhere else before i put a heat barrier layer .
then put some kind of paneling in.
anyway i just thought i would share my idea.
any thoughts?
bill
p.s.
heres the stuff.

Gardner Gibson 0311-GA LEAKSTOP roof Ptch 3.6qt

Hmmmmmm... long lasting rubberized repair

Couple of coats just may do the job for a rig bent on maintaining a lowwwwwwwww
cost!

How about that Rhino Coat stuff...nope gets away from that lowwwwwwww cost idea.

Let us know how it works, pictures are even better!

well in theory it's sound, id like to see how it applied and what kind of increase in sound deadening you gained after your all said n done.

Originally Posted by billy zz

any thoughts?
bill

I think it will stink to high heaven when you leave it in the summer sun with the windows up, just my thought. I'd use a product designed for the service. Getting that stuff off is going to be next to impossible, but then maybe it will be perfect. I'd say it's a crap shoot.

Originally Posted by OSK

well in theory it's sound, id like to see how it applied and what kind of increase in sound deadening you gained after your all said n done.

a couple of skim coats with a trowel
i dont own any sound level measuring devices so you will have to live with my opinion of what happens.

Originally Posted by rspears

I think it will stink to high heaven when you leave it in the summer sun with the windows up, just my thought. I'd use a product designed for the service. Getting that stuff off is going to be next to impossible, but then maybe it will be perfect. I'd say it's a crap shoot.

after it dries it doesnt smell like anything.

id probably do a test area first or take and cut a piece of sheet metal and then after it cures set it next to a heater to warm it up and check to make sure it isn't putting off any fumes and doesnt sag, remember this application is for exteriors that have the sun on them yes, but inside a vehicle in the heat stores heat inside the cab and can get much hotter with out the ability to release the stored energy (radiant heat) unlike on a roof. just a thought but do a tester first

I agree with OSK. At the very least I'd paint a piece of sheet metal, let it cure and then put it inside a vehicle closed up in the sun. It's one thing to have no odor out in open space, but totally different when the interior gets up to ~150F with zero circulation.
Have you checked out BQuiet sound deadener? B-Quiet sound deadening material

Originally Posted by rspears

I agree with OSK. At the very least I'd paint a piece of sheet metal, let it cure and then put it inside a vehicle closed up in the sun. It's one thing to have no odor out in open space, but totally different when the interior gets up to ~150F with zero circulation.
Have you checked out BQuiet sound deadener? B-Quiet sound deadening material

yeah
i will test it out for stinkyness before i get hasty with it.

Originally Posted by billy zz

yeah
i will test it out for stinkyness before i get hasty with it.

I would take a look on the internet and see if there are any reports or warning associated with the product or any of the chemical compounds that they use to see if they are safe. certain chemicals when exposed beyond their stability rating will emit poisoness gasses that are not only harmfull but will not have any odor either.

I still like your idea, don't get me wrong at all, i just would play it safe when using a compound for a new application that may or may not have been tested before under what are going to be the day to day circumstances your intending. I do want to know how it goes as far as what you find, might make a good product for doing floor boards and fire walls for sound deadening, or it may not? just wont know til you try it, and for $12 bucks the worst you get is a waterproof cab

The sound deadening mats that are on the market are usually 1/8-3/16 in thick. Using the spread on stuff you want and only applying a skim coat may not give you the effect you are looking for................more coats,if it doesn't stink, may be in order............something to think about.

Originally Posted by sunsetdart

The sound deadening mats that are on the market are usually 1/8-3/16 in thick. Using the spread on stuff you want and only applying a skim coat may not give you the effect you are looking for................more coats,if it doesn't stink, may be in order............something to think about.

yes
a few skim coats at a time. because i want it to cure thoroughly.
but the stink issue has me motivated to test it out today.
i will smear some on a board and bring it in the house and put it over a heater vent.
if it stinks
my wife will let me know...

Hot rods are supposed to be loud---the louder, the better

wear earplugs

Originally Posted by jerry clayton

Hot rods are supposed to be loud---the louder, the better

wear earplugs

nope
i like comfort.
ac, stereo,heater all that stuff

MATERIAL SAFETY DATA SHEET
NPCA
FOR COATINGS, RESINS AND RELATED MATERIALS
(Approved by US Department of Labor Essentially Similar to Form OSHA 20)
Date Issued 11/30/05
SECTION I
MANUFACTURER’S NAME
GARDNER ASPHALT CORPORATION
STREET ADDRESS
4161 E 7TH AVENUE
CITY, STATE, AND ZIP CODE
TAMPA, FL 33605
EMERGENCY TELEPHONE NUMBER
1-800-424-9300
PRODUCT CLASS
LEAK STOPPER (ASBESTOS FREE)
MANUFACTURER’S CODE
IDENTIFICATION
0310 A/F
TRADE NAME
GARDNER LEAK STOPPER
SECTION II- HAZARDOUS INGREDIENTS
INGREDIENT PERCENT TLV
PPM
TLV
Mg/M3
LEL VAPOR
PRESSURE
PETROLEUM ASPHALT
CAS # - 8052-42-4
<50% 0.5
Fume
STODDARD SOLVENT
CAS #- 8052-41-3
<20% 100
CELLULOSE FIBER
CAS # 9004-34-6
<10% 0.2
KAOLIN CLAY
CAS #- 1332-58-7
<15% 10*
POLYMER BINDER
CAS #- PROPRIETORY
<4%> **
ADDITIONAL INFORMATION-* AS RESPIRABLE DUST ONLY**PROPRIETORY INGREDIENT.
Hazardous Materials Identification System (HMIS)
Health Flammability Reactivity Personal Protection
1 2 0 C
SECTION III – PHYSICAL DATA
BOILING RANGE: 300 ºF - 390ºF VAPOR DENSITY HEAVIER LIGHTER, THAN AIR
EVAPORATION RATE FASTER SLOWER, THAN
ETHER
PERCENT VOTILE BY
VOLUME 30 %
WEIGHT PER GALLON
BY VOLUME 8.7 LBS
SECTION IV – FIRE AND EXPLOSION HAZARD DATA
DOT CATEGORY - NA FLASH POINT- 105ºF Minimum
EXTINGUISHING MEDIA- FOAM, DRY CHEMICAL, CARBON DIOXIDE
UNUSUAL FIRE AND EXPLOSION HAZARDS- KEEP AWAY FROM SOURCES OF IGNITION.
SPECIAL FIRE FIGHTING PROCEDURES- USE OF A SELF-CONTAINED BREATHING APPARATUS IS RECOMMENDED
FOR FIREFIGHTERS. WATER MAY CAUSE FROTHING, APPLY CAUTIOUSLY.
SECTION V – REACTIVITY DATA
STABILITY: UNSTABLE STABLE CONDITIONS TO AVOID: SPARK, FLAMES, ELECTRICAL
AND STATIC DISCHARGE.
INCOMPATIBILTY (MATERIALS TO AVOID): STRONG OXIDIZERS, ACIDS, AND HALOGENATED CHEMICALS
HAZARDOUS DECOMPOSITION PRODUCTS: CARBON DIOXIDE, CARBON MONOXIDE
HAZARDOUS POLYMERIZATION: MAY OCCUR WILL NOT OCCUR
CONDITIONS TO AVOID: NONE
SECTION VI-HEALTH HAZARD DATA
EFFECTS OF OVEREXPOSURE- ACUTE: SKIN: PROLONGED REPEATED CONTACT MAY CAUSE IRRITATION. EYES:
CONTACT MAY CAUSE IRRITATION, BLURRED VISION. INHALATION: EXCESSIVE BREATHING OF HIGH VAPOR
CONCENTRATION CAN CAUSE NASAL AND RESPIRATORY IRRITATION, DIZZINESS , NAUSEA AND POSSIBLE UNC
ONSCIOUSNESS AND EVEN ASPHYXIATION. INGESTION: CAN CAUSE GASTROINTESTINAL IRRITATION, NAUSEA,
VOMITING AND DIARRHEA. ASPIRATION OF MATERIAL INTO LUNGS CAN CAUSE CHEMICAL PNEUMONITIS, WHICH
CAN BE FATAL. CARCINOGENICITY: NO. MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE: PREEXISTING
LUNG AND SKIN DISORDERS. REPRODUCTIVE EFFECTS: ND. TERATOGENIC: ND. MUTAGENIC: ND.
CALIF. PROP. 65 • CHEMICAL WARNING (CALIFORNIA HEALTH AND SAFETY CODE #25249.5 ET SEQ).
WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or reproductive harm.
Read and follow label directions and information given on Material Safety Data Sheets and use care when handling or using all
petroleum products.
EMERGENCY FIRST AID PROCEDURE- SKIN: WASH EXPOSED AREAS WITH SOAP AND WATER. EYES: FLUSH EYES WITH
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SECTION VIII – SPECIAL PROTECTION INFORMATION
RESPIRATORY PROTECTION: NOT NORMALLY REQUIRED IN WELL VENTILATED AREA.