To avoid buckling subfloor panels should be spaced with a 1 8 inch gap at all edges and ends to provide room for naturally occurring expansion.
Installing sub floor in room without 90 degree corners.
How to demolish flooring and install underlayment.
Built up drywall compound and imperfect corner bead installation or framing generally leave you with something greater or less than an exact 90 degree angle and standard 45 degree miters won t work.
A mitered joint is made with both ends of the molding cut at a 45 degree angle and fitted together to form a 90 degree inside corner.
Modern cabinetmakers and installers use a small item called a scribe tool to remedy.
Only about half the time can you cut 45 degree miters on base boards and have them meet perfectly on outside corners.
If you are unsure what angle you need imagine where your seating is in your room compared to the corner and pick the angle that best suits your needs.
See the diagram to the right.
Here are nine common subfloor installation mistakes and how to prevent them.
Out of square corners those that don t form a perfect 90 degree angle are common when installing cabinets.
An av express corner tv wall mount fixes this problem by allowing full motion and swivel movement of your tv at up to 90 to the wall.