MDF (Medium Density Fibreboard) Molding is a type of hardboard, which is made from wood fibers glued under heat and pressure.
There are number of reasons why MDF is used for molding. It is dense, flat, stiff, has no knots and easily machined. Because it is made up of fine particles, it does not have an easily recognizable surface grain. MDF can be painted to produce a smooth quality surface. Because MDF has no grain it can be cut, drilled, machined and filed without damaging the surface. Veneers and laminates may also be used to finished MDF.
PVC molding products are durable and easy to install. They can be sawed, drilled, nailed and glue like wood.
PVC moldings are more flexible than wood. These products also resist splintering, decaying and insect infestation. PVC molding has produced a radical change in construction . It is a consistent, workable material that is simply impervious to weather. PVC molding paints beautifully and lasts longer than when painted on wood.
In interior applications, PVC moldings are used throughout the home or building:
Baseboard PVC moulding- at the junction of an interior wall and floor to protect the walls from impacts.
Quarter-round - at the bottom of the baseboard between the flooring and the baseboard.
PVC Bed moulding (both beveled and plain)- where wall and ceiling come together
Casing- around the top and both sides of a door or window opening
Crown PVC moulding- a decorative element above windows and doors.
PVC moulding are also used in exterior applications:
- Drip cap- over a door or window to keep water from flowing under the cladding
- Shingle mould- at the top of the last row of siding and the soffit
- Board and batten- across a joint where to parallel or boards meet
- Brickmould- at the transition between brick and siding
- Corner- covers the edge of the wall at an outside corner or covers a joint on an inside corner.