Des Moines Window Pros provides professional retrofit windows in Des Moines, IA for residential and commercial properties across Greater Des Moines. The 2019 to 2023 American Community Survey puts about 27,000 of Des Moines' roughly 97,000 housing units at 1939 or earlier. On a fair share of those houses the right purchase is not a window at all, and this is the page where we say so.
A retrofit sets a new unit inside the frame already in the wall, leaving siding, trim and interior casing alone. Full-frame replacement takes the frame out to the rough opening and rebuilds the flashing and air seal. It is the slower and dearer route, and the only one that can change an opening's size. On a pre-war house the choice between them is rarely a close call.
Much of the glass in that older stock sits in old-growth wood that outlasts what replaced it. Tight-grained fir and pine will take another fifty years if the paint film holds and the sill still sheds water. A retrofit discards the sash and keeps the frame. Restoration keeps both, and on sound wood it is often better engineering as well as a smaller invoice.
Where it stops working is where water has been getting in for twenty years. The sill, the lower jamb and the sub-sill go first, and the damage hides under paint. Probe them with an awl. Where the wood is soft or the frame has racked, an insert conceals the failure and the opening keeps rotting behind a new window.
A retrofit also costs you glass, an inch or two of visible pane per side, because the new frame nests inside the old. Older bedrooms here are where that bites, since an escape opening is sized by clear opening and many of these windows only just clear it. Plenty of original basement sash pass once the storm and the screen come off. Measure before anybody orders glass.
Permits turn on what changes. Setting a new unit into an unaltered opening is treated differently from enlarging one, cutting a new one, or touching structure, and we confirm the requirement with the city Permit and Development Center before anything is ordered. A permit question answered after the glass arrives is an expensive question to answer.
Work on housing painted before 1978 is carried out under lead-safe renovation practices, and a full-frame teardown breaks far more paint than a pocket insert does, which is a genuine cost line rather than a formality. Safety glazing follows the location: doors, the arc beside them, tub and shower walls, stairs, and large panes sitting low near a walking surface.
A single cold room in a 1920s house, where the sash are sound, is usually fixed with weatherstripping, insulation in the weight pockets and a storm panel. That costs a small share of a houseful of new units. Nothing local requires impact-rated glazing here, and hail takes the outer lite and the exterior face of the frame, which is the part a retrofit leaves behind. Windows jump the queue when they are failing rather than merely old.
Our insured team brings the right materials and equipment to every job — dense-pack cellulose and attic top-plate air sealing done ahead of glass, AERC-rated low-e interior and exterior storm panels, warm-edge spacers in replacement insulated glass units, pultruded fiberglass lineals with a glass-matched expansion rate, polyamide thermal struts in commercial aluminum framing, EPA Lead-Safe Certified containment on pre-1978 openings — and backs the work with a written workmanship warranty. We serve Des Moines and nearby communities including West Des Moines, Ankeny, Ames, Urbandale.
Everything in Scope
Everything our retrofit windows in Des Moines covers
One crew, one point of contact, and the full range of retrofit windows work in Des Moines, IA. If it is on this list we do it in house rather than handing it to a subcontractor:
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- old growth wood sash restoration des moines
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Not sure which one describes your situation? Describe it in plain words and we will sort it out — or browse the rest of our Des Moines services.
Materials, equipment and how we do retrofit windows
The difference between retrofit windows that lasts and retrofit windows that gets redone in three years is almost always preparation and materials, not the finish you see on day one. We work with dense-pack cellulose and attic top-plate air sealing done ahead of glass, AERC-rated low-e interior and exterior storm panels, warm-edge spacers in replacement insulated glass units, pultruded fiberglass lineals with a glass-matched expansion rate, spec them to the job instead of to the invoice, and write the material grades into the free estimate so you know exactly what you are buying.
Every Des Moines job runs the same way: site walk and measurements, written scope and fixed price, protection of the surrounding area, then the work itself with a daily clean-up. Years of window work in Greater Des Moines means we have already met whatever your property is going to throw at us — awkward access, older construction, an HOA with opinions.
Where we do retrofit windows outside Des Moines
Des Moines Window Pros covers Des Moines and the surrounding communities of Greater Des Moines. Crews run out to the same nearby cities every week, so an out-of-town job does not mean an out-of-town price.
- Retrofit Windows in West Des Moines, IA — Polk County, population 68,723 at the 2020 census
- Retrofit Windows in Ankeny, IA — Polk County, population 67,887 at the 2020 census
- Retrofit Windows in Ames, IA — Story County, population 66,427 at the 2020 census
- Retrofit Windows in Urbandale, IA — Polk County, population 45,580 at the 2020 census
- Retrofit Windows in Johnston, IA — Polk County, population 24,064 at the 2020 census
- Retrofit Windows in Waukee, IA — Dallas County, population 23,940 at the 2020 census
Start on the Des Moines Window Pros homepage for a free estimate, or call (866) 240-3787 and describe the job.
Why Des Moines Chooses Des Moines Window Pros
- ✓We price the repair before the replacement, and we will take the smaller job
- ✓Whole-unit NFRC ratings on every quote, never center-of-glass numbers
- ✓Sloped sill pans with back dam and end dams on every opening we set
- ✓Insulated glass unit replacement offered on any sash that is still sound
Want a written retrofit windows estimate in Des Moines?
Call (866) 240-3787 or send the short form — no pressure, same-day reply on most requests.
The standards behind retrofit windows
Quality here is not a matter of opinion — it is written down. The retrofit windows work we do in Des Moines follows published industry standards: NFRC sets the U-factor and SHGC ratings on every window label, and ENERGY STAR defines the efficiency thresholds by climate zone. If a contractor cannot tell you which standard a detail comes from, that is worth asking about before you sign.
Every retrofit windows project in Des Moines gets the same attention, whether it is a single room or a full commercial job. We show up on schedule, keep the site clean, and stand behind the work — the estimate is free and there is no pressure.
Ready to get started? Call (866) 240-3787 for a free retrofit windows free estimate in Des Moines, or request a quote on our contact page and we'll get right back to you.