Installing a Pre-Hung Window
A Pre-hung window comes complete with a sash, a frame, a sill, hardware, and most of the trim.
When ordering a window, you will need to know the exact depth of the wall it will fit into so that the
jambs will be the proper size to fit flush with the wall.  See our tips for measuring by
clicking here.

It is best to install the window from the outside, although you can maneuver an operable window
through the opening from the inside, open it, and lean through to fasten it. If you want to install the
window from the inside, make sure you are safely anchored so you don't fall out.

Cutting the Exterior Opening
After laying out where you want to put the new window from inside the room, drill holes at the
corners, and then drive nails through the holes so they are visible from the outside. With a
carpenter's level, mark lines on the outside connecting the corners.
From the outside, using a circular saw, jigsaw, or reciprocating saw, cut through the siding and
the sheathing along the lines; lay the cut material aside. For stucco, use a circular saw fitted with
a masonry-cutting blade. Always wear eye protection.  Inside, remove drywall.
.If necessary, assemble the mounting flanges and flashing of your window; make sure to follow
the window manufacturer's instructions carefully.
After holding up the window and marking its placement on the siding, take the window down and
widen the cuts through the siding, but not the sheathing, to allow for the brickmold or flange that
runs around the outside perimeter of the frame.
Do it Yourself Window Installation
While we wouldn’t normally suggest installing your own windows, there are those who, with the
right guidance, are able to do it themselves.   Here are some helpful guidelines but as always,
follow the
manufacturer’s directions as windows vary from brand to brand.
Do It Yourself
Best Window Prices
Mounting the Window
To prepare the opening, apply 8-inch-wide strips of moisture seal around the perimeter of the
window opening, sliding it behind the siding.  Make diagonal slits at the corners, using a utility
knife; fold the moisture seal back over the rough framing and then staple it.
The strips should stop just before the inside edge of the opening.  Place pairs of shims at the
base of the rough opening, and adjust them until they are level. Drill pilot holes (to prevent the
shims from splitting), nail them with two 6d (2-inch) nails per pair, and then cut them flush with
the exterior wall.  Make sure the pairs of shims are not so thick that they will prevent the window
from fitting into the opening. Inside, trim the shims flush with the jambs.  For nailing the flange or
brickmold to the sheathing, use 4d (11/2-inch) roofing nails (for a flange) or 8d (2 1/2-inch)
galvanized casing nails (for brickmold).

Trimming a Window
To complete your window project, you may need to install slivers of wallboard to fill the gap
around the edges of the window; fit the new pieces as close as possible to the jambs on all
sides.  You will also need to finish the inside edges of the window with moulding. On a single- or
double-hung window, this involves fastening a stool to the windowsill, attaching an apron to the
wall underneath the sill, and fastening casings to the sides and top to cover joints between the
wall and window.  Other
types of windows-casement, awning, and hopper-are usually finished
just with casings on all four sides.
Bayside Windows & Doors, Inc.
Clearwater l St. Pete l Tampa, FL

(727) 504-2383  Tel
(727) 687-6824  Cell
(727) 791-1970  Fax
'Serving Tampa Bay since 1994'
window supplier clearwater
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Windows and Doors St. Pete | Clearwater | Dunedin | Oldsmar | Tampa | Largo
Copyright 2012, Bayside Windows and Doors, Inc. / Shorian Construction All rights reserved
Replacement Windows & Doors
Clearwater, St. Pete, Tampa
(727) 504-2383
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