Insulation question for siding


#1

if we are going over existing siding with vinyl. waht is standard? 1/2 inch insulation?
if we rip all the old siding off,do we then put house wrap on first and then insulation? is house wrap only used on new houses? i would think since you are already tearing everything off you would put up house wrap and then 1/2 insulation over it?
if not,when is house wrap used?
thanks you


#2

What type of siding are you going over? we will start there.


#3

it would be vinyl going over wood.


#4

house wrap can be done on remodels. insulation board is used for 2 things, insulation and to level out the wall if you are going over old siding. so, do you need more insulation…and do you need to level the wall.


#5
  1. 1/2 insulation is used when going over existing wood siding with vinyl for a flat surface and for some insulation?
  2. if we have to rip the existing siding off whether its vinyl or wood,is 1/2 inch insulation enough or do we also use house wrap?
    3)on new construction,is house wrap and 1/2 insulation used or just wrap?
    thanks

#6

house wrap never hurts. new construction is housewrap only.


#7

I have been told by a very reliable and informed construction manager that house wrap in some circumstances can encourage mold growth.
To avoid mold on exterior walls some builders use standard #15 felt for siding underlayment.
These are all high end builders in my experience.

Housewrap is standard, I do believe that it is required in Michigan to use housewrap on the gable ends also.