underlayment question...roofing paper ok?


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Old 03-06-07, 11:04 AM
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Smile underlayment question...roofing paper ok?

subfloor is wood

just want noise reduction....a little bit..

using 99cent per foot traffic master home depot stuff.....10 yr guarantee

so, the cheap stuff......hey, its a rental!

PROBABLY sounds strange, but will it work?

why or why not


ok, I am ready to get beat up now!
LOL



AL
 

Last edited by supernoob; 03-06-07 at 04:27 PM.
  #2  
Old 03-07-07, 09:39 AM
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Talking

ok.....that was dumb

ebay gas stuf under 25 a foot

search underlayment

al
 
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Old 03-07-07, 10:12 AM
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Wink

so, the cheap stuff......hey, its a rental!


Hey if its ok to do this to a rental. How about just 15lb or 30lb felt paper under it????
 
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Old 03-08-07, 09:29 PM
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Smile

ed,


that is what I am asking.....

30 lb felt paper is like 15 dollars for 200 square feet, but maybe the roofing paper is going to smell like a roof in the summer when it gets hot....dont want that ....


but really, I would have no problem putting that down,

it is on a wood subfloor, and it is even......and level

what are the three things underlayment does....?

*fixes imperfections in the floor.....BUT, my floor is even
*acts as a moisture barrier....BUT, I am in the northeast, and moisture should be ok....
*acts as an acoustical barrier....THIS is what I really want....
*keeps the manufactures warranty.....I dont care....they are prorated anyway, and my floor is cheap, 99 cents stuff, with only 10 year warranty
*I have been told that the floor can break and seperate from too much movement with out an underlayment.....I would think this would be critical if the floor were not level.......BUT, my floor is level , and I find it hard to believe that the floor would just SELF DESTRUCT...

so, CAN I USE 30 LB FELT PAPER?...seriously, it would be easier for me, and save me money, and as long as it doesn't stink up the room, and provided a little sound barrier, and I guess is would have moisture barrier properties as welll.......


ok, kick the heck outta my rear for pushing the issue, but WHY NOT?

just cause the manufacture says so? well...who make the underlayment....the manufacture, right?

hey, how bout that?


al


and, I DID NOT PUT underlayment in my bedroom and living room , about 225 square each room, and I know it has only been about a month, but no problems......

hey , when it falls apart in 3 years. .....I will have some humble pie for lunch....

but I find that hard to see happening....

how BOUT THIS>......is anyone else out there cheap like me, and did NOT install the underlayment, and it was junky, or fell apart?

let us know...


AND the only reason I want to do it on the rental with the underlayment , is that the LR is a 28 foot run, and it is the main traffic area to the house.....and if I sell the house, I don't want the little clicking distracting a buyer.....it doesn't bother me....or my family ...they dont' eeven notice it....

but a picky buyer might....


and, the cheapest I could find is about 18 cents per square foot shipped on ebay....about 100 dollars total....

now if I go and get 30 lb felt, it is only 200 square foot for 16 dollars.....

so, I could save money, and the leftover could be used for my roofing projects.....


seriously , .....set me straight, or say you don't know.....

I will live with my decision......
a
thanks!

al
 
  #5  
Old 03-08-07, 09:40 PM
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Wink

Years back they use the black felt all the time.
 
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Old 03-08-07, 11:43 PM
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#15 felt is way more than sufficient for vapor barrier. #15 is commonly used on wet walls in bathrooms. I sometimes use roofing mastic and embed the paper in that when going over concrete slab. For minor noise reduction, I cannot see any advantages to #30 over #15.
 
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Old 03-09-07, 06:28 AM
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Originally Posted by Shooter View Post
#15 felt is way more than sufficient for vapor barrier. #15 is commonly used on wet walls in bathrooms. I sometimes use roofing mastic and embed the paper in that when going over concrete slab. For minor noise reduction, I cannot see any advantages to #30 over #15.
OK,

so it should be fine then? at least I will have a moisture barrier, maybe a little bit of a sound barrier, but is should be ok to use roofing felt, CORRECT?


and....what exactly is the difference between 30 and 15 felt anyway>?


thanks!


al
 
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Old 03-09-07, 12:30 PM
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30# felt is twice as thick/heavy as 15#

15# roofing felt is usually what I've seen used under hardwood on new construction around here. I only have a little bit of hardwood but that is what I used. 7-8 yrs and no problems or odors.
 
 

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