The filler should be level and even with the surface of the wood.
Fill big gaps in siding.
Cellulose fillers are mostly for filling holes in woodworking projects like cabinets mantels trim or projects that you plan on finishing with stain and a topcoat.
Exterior trim around doors and windows needs to be caulked to fill any gaps between the trim and the siding behind the trim.
Once your wood filler is mixed use it quickly.
Then fill the space around it with expanding foam.
This can be found at well stocked hardware stores but not always at large home improvement centers.
Accepts stain or paint just like real wood.
There are many places where you may need to fill gaps before you paint.
Cut it about 1 2 in.
Undersized so it s easy to fit in.
Always caulk between the siding and the trim.
While properly engineered.
Also check concrete supply centers as backer rod is used to fill gaps in poured concrete walls.
Apply the filler to the craft sticks using another craft stick or a putty knife.
Shim the rigid foam in place with little chunks of foam.
A good diy approach is to cut rigid foam insulation to fit between the joists.
How to fix the gaps in exterior trim.
Cellulose filler is made with real wood.
Do not caulk between siding and any built in receiving channels located at or around windows.
Vertical trim gap caulking.
Fill larger gaps with foam backer rod sometimes called spline.
Don t forget to caulk or foam the joint between the sill plate and the foundation too.
On door window frames and baseboards etc.
The craft sticks will act as a support for the wood filler.
Sands flat and even.
Cracks and holes in any surface collect water which causes paint to peel.
Leave a 1 8 gap between the siding and the trim or other materials to allow for structural movement.
Push the appropriate size backer rod into the gap below flush with the surface.
On an interior paint job you could find them where walls meet ceilings on inside corners of walls where wood trim meets walls on inside corners where wood trim meets other wood trim i e.