Tom sets the router s guide so a inch bit will cut next to the top mark when the guide rests on the door s top face.
Best way to insulate interior door.
Repeat with the weatherstripping for the top of the door and then the hinge side of the door.
On the first pass move the router from left to right.
Cut lengths of weatherstripping to fit along the exterior door s latch side hinge side and the top.
How to insulate a leaky door.
To seal the door bottom place the door on sawhorses and use a square to mark out a 5 8 inch wide dado centered on the door s bottom edge.
The term hollow is a misnomer.
Last year i made a heavy felt roam shade that provided so much insulation it s uncanny.
Fit the latch side weatherstripping along the door stop and nail in place.
A hollow core door is lightweight and inexpensive but it does have a downside.
The inside of the hollow core door is actually filled with a honeycomb or baffle of cardboard that adds rigidity to the thin veneers of the door.
Replacing old door sweeps with new ones can make a world of a difference.
It allows sound to pass through easily and is impossible to insulate internally.
A leaky drafty door increases energy costs because it lets out cold air in summer and loses heat in winter.