The old siding will either be removed or covered up in the process making it easy to add insulation a number of ways.
How important is it to put siding up after insulation.
Now before i put up the new vinyl siding i m thinking that adding at least a 1 4 fanfold foam layer would be a good idea especially after reading your article.
The r value is your guideline.
Secure the seams and edges around openings with tape to match the foam insulation.
I thought i should show why continuous foam under the exterior siding is so important.
Electrical systems and insulation both need to be installed inside the wall cavities of your home and it is important that they go in in the correct order.
However it is quite difficult to install vinyl over other varieties of lap siding because any imperfections in the wall will show up after installing the new siding.
Using the wrong materials for your siding not taping off seams in the house wrap or installing a moisture barrier with the strips hung horizontally these can all wind up threatening your sheathing and may potentially cause leaks.
As many things in building science go you my dear reader have to learn something.
To cover a lap siding with vinyl the first thing you need to do is to cover the existing siding with a moisture prevention barrier and highly durable foam insulation.
The r value of the insulation measures how well the insulation resists the flow of heat through it and the same with the siding.
Masonry chimneys are installed after siding or veneer.
Put up full sheets then use a drywall saw to cut out openings for windows doors and utilities.
Is it a truly necessary step to have the foam on the sheathing before installing windows doors or will it suffice to bring it right up the edges and just make sure things are taped securely.
Insulation must allow moisture to wick to the outside without losing insulating integrity.
Alternatively adding insulation to the walls can also be done from the inside which requires the removal of drywall and can be more difficult and expensive than it s worth.
By glenn hooper june 2 2015.
I get asked if this or that in the in the cavity works as well as foam under the siding.
For instance after the framing is complete and the exterior walls have been put up you need to consider the inside of the wall cavities before you drywall the interior.
Why insulation under the siding is important.
Replacing siding and upgrading insulation should increase your home s energy efficiency.
Exterior siding chimney plumbing and electrical rough install roofing roof shingles insulation hardwood flooring.
