Interior door installation
Most interior doors (excluding hi-fold doors) are pre-hung assembled or knock down ready to assemble.
To accommodate a pre-hung door the R. S. O. (rough stud opening) must be installed to allow for shimming tolerance, this is required for both sides and the top. The rule of thumb is one inch wider than the door width and one half inch higher including the door frame. This is to allow for any shrinkage or twisting in the rough stud opening. If your door is the knock down ready to assemble type put the unit together following the instructions. You will find that you can assemble for either right hand or left hand hinge, swinging in or out of the opening.
Apply a piece of 1×2 across the door at the bottom (right jamb to left jamb) to hold the door in the front plumb and square. Set the door in the opening and using carpenters square and level shim with cedar door shims and fasten with nails. Do the hinge side first then the others shimming where required top and side.
Exterior door installation
Installing a new exterior door will require you to make a number of decisions.
1. Solid core plywood faced door?
Will require a lot of maintenance, staining, sealing and painting.
2. Solid wood door i.e.: Western Red Cedar or Oak etc. Will require sanding, staining, natural finish — subject to temperature change inside and out. Panels may crack requiring repairs and refinishing on an annual basis.
3. Steel insulated door primed ready for paint? Most people assume steel insulated doors are a finished product (usually white in colour) “WRONG”. They must be painted within the first 6 to 8 months of installation using an exterior acrylic latex or exterior urethane paint. Door must be washed with T.S.P General Household Cleaner or T.S.R using a pot scrubber pad and rinsed well before painting.
4. Consider fibreglass-insulated doors, as they are maintenance friendly.
5. Good, Better, Best, One of the best doors available now is the new Protect Door manufactured by Guenther Doors. Their new laminated inner frame adds structural strength giving greater security and comfort.