Window repairability
I’m buying into the whole “repair-ability is green” after realizing how difficult it is to repair my current windows. Now I’ve got a bunch of questions about buying windows for repair-ability.
Are there any modern windows designed to have IGUs replaced instead of replacing the whole sash?
Are there any manufacturers that commit to long term availability of replacement hardware and sashes?
What window manufacturers have folks been able to get replacements parts and sashes for after 10+ or 20+ years? Are there good window lines that have been around forever, where new sashes work in old window frames?
Are particular types of windows / window manufacturers more prone to having repair parts disappear from the market? (Be it from changing design, going under, getting bought up, etc.)
If I don’t have the option to repair my current windows, what reasonably affordable windows should I think about for longest repairable lifetime? I’m specifically interested in double hung. I know it’s not the best option for air sealing.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
Replies
Marvin's new-ish "Modern" line has replaceable glazing, and they have been around long enough that they are as safe a bet as any manufacturer. They also look good and perform well. They are not inexpensive. I don't know of any "affordable" windows with replaceable glazing; replacing the entire sash is typical.
Thanks! I think that line is too modern looking to fit with my house's architecture, although it might look interesting with the old brick. It doesn't look like double hung is an option, although I know you can mock that with simulated divided lites.
Glazing on most (all?) windows is removable, some make it easier than others. The easy ones are with snap in covers and flex seals, most vinyl windows and UPVC tilt and turns are built this way. Some like fiberglass, aluminum and metal clad wood will have glazing tape holding the IGU on one side which can be a challenge to separate from the glass but still doable.
As for sash compatibility, I would guess you best luck is with wood or aluminum clad wood windows. The design and hardware of these doesn't seem to change much over the years.
Most tilt and turns use the same Rehau hardware but there are too many fine details that need to be built/adjust just right for a new window to fit into an old frame.
I am just completing a maintence upgrade to 22 year old Harvey windows. Getting replacement glass for failed sashes was easy and getting frames apart not difficult.
I changed all balances for every sash and with a little bit of pledge furniture polish they open and shut with ease. Kudos to harveys for making it simple and affordable to repair.