Cut it about 1 2 in.
Fill gap under siding with insulation.
Is there supposed to be a direct entrance into my basement under the siding.
But don t just use that.
Shim the rigid foam in place with little chunks of foam.
Look for minimal expanding foam on the can s label for a cleaner job.
Put the batt in place and use a scissors to snip around the box.
Remove the loose pieces of insulation in the gap before foaming.
Maybe for moisture reasons or something if not what should i fill this with.
In order to fill a gap properly you want to go with a 3 step process.
Pick a day when the attic temperature isn t extremely high or low.
The cold air can then be felt coming out of the outlets and where there are gaps between the baseboard and wood floors.
Rodents can chew through spray foam.
If there aren t large gaps perhaps focusing on attic insulation air sealing around doors and windows etc may more effective.
To help keep air from escaping through the attic seal the gap between the attic hatch door frame and the ceiling joists.
By filling the voids behind the siding s stepped profile the insulation makes the complete material stiffer and more resistant to warping and movement than conventional vinyl siding.
Step 9 plug up larger gaps with pieces of copper scrubbing pad from the hardware store.
Fill gaps large and small with expanding foam just spray it into the gap.
Undersized so it s easy to fit in.
Then enmesh an exclusion material into the foam.
That creates gaps and air convection routes around the box.
Fill in the space between the four sides of the attic hatch door frame and the ceiling joists.
There is what looks like ripped plastic paper but then just a large gap into my basement around the entire house.
The walls do not have insulation and so are hollow spaces cavities.
Don t wrap fiberglass batts around electrical boxes or stuff full batts behind them.
Tuck the snipped out plug of insulation behind the box.
Would like to do it once but do it right.
First fill the void with a backing material.
The insulation also adds some r value or insulating quality to the siding.
A good diy approach is to cut rigid foam insulation to fit between the joists.
Don t forget to caulk or foam the joint between the sill plate and the foundation too.
Just use it as a filler or backing material.
These benefits make insulated vinyl seem like an easy worthwhile upgrade to.
Then fill the space around it with expanding foam.