Siding once again ,
#1
04-21-06, 11:29 AM
Join Date: Jun 2005
Location: South Fork of The Edisto River, SC
Posts: 212
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Siding once again ,
I have finished my window project and now i am begining to start the siding project, i have 70% of the old stuff off and its time to make a choice ..
i had asked about real wood and had gotton a lot of great feedback. Thanks!!!
i thought i would not consider vinyl as a option but my wife has found a vinyl product that she may accept as a final choice. Its a Certian Teed cedar board w/ a insulation backing.
After reviewing the information on thier site , i think it would be a great product, I've priced it and it is lil more costly, but not much , but is there a disadvantage to having the foam insulation on the back?? and what is the dis / advantage of using 15 lb felt or tyvex ???
I do promise this is the last question on this project!!!
So i turn to YOU my DIY friends to help me and keep me from sinking a pile of cash into something that is going to be a prolbem later on down the road..
Many many thanks in advance
i had asked about real wood and had gotton a lot of great feedback. Thanks!!!
i thought i would not consider vinyl as a option but my wife has found a vinyl product that she may accept as a final choice. Its a Certian Teed cedar board w/ a insulation backing.
After reviewing the information on thier site , i think it would be a great product, I've priced it and it is lil more costly, but not much , but is there a disadvantage to having the foam insulation on the back?? and what is the dis / advantage of using 15 lb felt or tyvex ???
I do promise this is the last question on this project!!!
So i turn to YOU my DIY friends to help me and keep me from sinking a pile of cash into something that is going to be a prolbem later on down the road..
Many many thanks in advance
#2
04-21-06, 03:45 PM
Member
Siding once again ,
Insulation backing on vinyl siding is not effective from an insulation standpoint. Siding, by its definition HANGS loosely (cannot be nailed tightly per installation requirements)on a wall and only sheds water. Since ther is no seal on the overlaps, it does not insulate.
Insulation may provide some stiffening of the siding that is badly needed.
Your real moisture barrier is under the siding and the temperature under the siding is about the same as the outside temperature.
Both felt and Tyvek do a good job as a moisture barrier. The key is the installation and flashing around and over the doors and windows. This is where the moisture and mold problems occur. A surprisingly high number of doors and windows (70%) are not flashed properly.
Dick
Insulation may provide some stiffening of the siding that is badly needed.
Your real moisture barrier is under the siding and the temperature under the siding is about the same as the outside temperature.
Both felt and Tyvek do a good job as a moisture barrier. The key is the installation and flashing around and over the doors and windows. This is where the moisture and mold problems occur. A surprisingly high number of doors and windows (70%) are not flashed properly.
Dick
#3
04-22-06, 11:03 AM
Join Date: Jun 2005
Location: South Fork of The Edisto River, SC
Posts: 212
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yes i understand that it does not provide a substantial increase in R-value but according to thier information it does help with air infiltration and that it does add some rigidity to the siding as well as provide some form of noise barrier(which is a plus) , but is there a disadvantage to useing the foam backed siding, i remember there was a company that used to sell this type before but it was a 2 piece system, and they are no longer carrying it, and they won't tell me why. that is why i posed the question here. has anyone had any experience with this before , good or bad ??? i read some where that felt may cause a increase in humidity in a house because it doesn't breathe like tyvex.
