Window replacement options

There are a couple of ways to approach changing windows. Ronnie Pocock provides options for replacing old windows when renovating your home.

Window replacement
ARTICLE Ronnie Pocock

There are a couple of ways to approach changing windows. You can have ‘insert windows’ installed. This process will maintain a lot of the existing character like the wide facing boards. The internal sashes will be removed and a new aluminium frame with sashes inserted into place.
This allows the original internal timber casing, exterior trim and flashing to remain, so there is no need to replace your existing internal wallboards or repaint them. You can also change the window configuration. For example, change awning for casement, as long as it fits into the existing opening. Insert windows don’t require a building consent.
If you go with insert windows, then consider having facing boards done in the extension for visual consistency.
Another option is ‘full replacement windows’ where the entire window is removed, leaving only the opening just like a new home build. This does mean the internal wallboards will either need replacing or re-plastering and painting.
The benefit of full replacement is that you have the option of changing the size of the window as you are removing or partially removing internal linings. Building consent generally is required with a change in the opening size.
Another benefit is you can insulate in behind the walls if they haven’t already been done. A full replacement is recommended when there is significant rot or deterioration to the exterior timber of a window opening.
Because of the amount of additional materials and work that are required in full replacement window installation, it will cost more.
Both insert and full replacement windows can be done with double-glazing and your new door handles and window fasteners can maintain a consistent look throughout the entire house.
Full replacement is approximately 30 to 50 percent dearer depending on the difficulty of the install.

You might be interested in reading: Sustainable window shades.

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This article by Ronnie Pocock featured on page 32 of Issue 014 of Renovate Magazine. Renovate Magazine is an easy to use resource providing fresh inspiration and motivation at every turn of the page.


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*All information is believed to be true at time of publishing and is subject to change.

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