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Before
AfterSingle & Double Hung Windows in Kendall, FL
Single and double hung windows are the most common window style in Kendall homes, and Window Installation is straightforward when the measurements, the product spec, and the written price all agree before anyone picks up a tool. At Sightline Windows & Doors Kendall, every hung window replacement starts with a measured survey you keep – the same document that becomes your final invoice, with no gap between the two. If you want a written price before committing to anything, call us at (786) 321-3319.
This page covers what distinguishes single hung from double hung configurations, which situations call for each, what our process looks like on a Kendall job, and what you should expect to pay in this market. Everything here sits within our broader Window Installation in Kendall work, and the same Haven Standard that governs every opening we’ve touched since 2012 applies here too.
Single vs. Double Hung: What the Difference Actually Means
The terminology trips people up, so here’s the plain version. A single hung window has one movable sash – the bottom one rises, the top stays fixed. A double hung window has two movable sashes: the bottom rises and the top drops down independently. Both configurations share the same frame profile and glazing pocket, which is why they’re often priced close together and specified from the same product lines.
In Kendall’s climate, the double hung configuration does real work. When you drop the top sash a few inches and raise the bottom, warm interior air exits at the top while cooler outside air pulls in at the bottom – a stack-effect that’s worth using on Kendall’s drier winter evenings when you’d rather not run the AC. The top-sash tilt-in feature on most double hung units also makes cleaning the exterior glass from inside the room practical, which matters when you’re three feet from a neighbor’s fence or facing a screened enclosure that blocks ladder access.
Single hung windows are still the right call in certain situations: bathroom installations where the window is above a tub deck, fixed-height openings in older Kendall block construction where the rough opening won’t accommodate a second operating mechanism, or budget-constrained replacements where every unit counts. The U-factor and Solar Heat Gain Coefficient (SHGC) performance can be identical between the two configurations in the same product line – the operating hardware is the variable, not the glass or the frame material.
When You Need Single & Double Hung Windows
- Sashes that won’t stay up or won’t close flush. In Kendall’s humidity, wooden or older vinyl frames absorb moisture over years and warp out of square. A sash that drops on its own or leaves a visible gap at the meeting rail is no longer performing as a weather or security barrier.
- Fogging between the glass panes. When the sealed insulating glass unit (IGU) fails, moisture migrates into the cavity and leaves a permanent haze. Resealing is a short-term fix at best; the glass unit needs replacement, and in most cases replacing the full window is more cost-effective than sourcing a matching IGU for a discontinued frame.
- High utility bills tied to west- or southwest-facing bedrooms. In neighborhoods like The Hammocks and Country Walk, afternoon solar exposure through uncoated single-pane glass adds measurable load to your AC system. Impact-rated double hung windows with low-E coatings and SHGC values below 0.27 cut that load without sacrificing natural light.
- Permit-required hurricane upgrades. Miami-Dade County requires impact-rated glazing on any window opening in a single-family home that undergoes permitted renovation. If you’re pulling a permit for a kitchen remodel or a room addition, the county inspector will flag non-compliant windows in the affected area. We handle the permit filing and inspection coordination on every job – it’s part of the written scope, not an add-on.
- Drafts around the frame in the dry season. When the temperature drops into the mid-50s in January – which Kendall does see – a degraded foam or vinyl weatherstrip lets conditioned air out and unconditioned air in at the sill and the jamb liners. If you can feel airflow with your hand near the frame on a cold morning, the seal is gone.
- Operational hardware that’s seized or broken. Balance springs and tilt-wash latches on double hung windows wear out. If the sash requires more than light pressure to operate, or if the tilt-in mechanism has failed, normal cleaning and emergency egress are both compromised.
Before
AfterOur Single & Double Hung Windows Process
- Measured survey and written scope. A uniformed, background-checked Sightline technician comes to your Kendall home and measures every opening – rough width, rough height, existing frame depth, sill condition, and exterior casing material. The survey notes the current sightline (the visible glass area) and flags any structural issues in the rough opening. You receive this document. The written price comes from this document and cannot differ from it. This is Haven Clause 1: have it in writing.
- Product specification by performance tier. Based on the opening dimensions, your exposure direction, and your budget range, we specify from the product lines we carry – which for single and double hung work in Kendall typically draws from PGT‘s WinGuard series for impact-rated applications and ViewLux for energy-efficient non-impact replacements. We’ll note the U-factor, SHGC, and impact certification (Miami-Dade NOA number where applicable) on the spec sheet. You’ll know exactly what product is going in before you sign anything.
- Permit filing (when required). Miami-Dade County requires a permit for most window replacements in single-family homes. We file the application, carry the product approvals, and coordinate the inspection schedule. The permit fee is itemized in your written scope – it’s never folded into a vague “installation” line.
- Removal and frame preparation. Old sashes and frame components come out, and the rough opening is inspected for rot, water intrusion, and out-of-square conditions. In Kendall’s older CBS (concrete block structure) homes, we frequently find previous caulk jobs that masked water migration behind the stucco return. We document what we find with photographs before closing anything up – Haven Clause 4: evidence on every job.
- Installation and sealing. The new frame sets into the opening, shimmed plumb and level, anchored per the manufacturer’s Miami-Dade NOA requirements, and sealed at the perimeter with a fluid-applied membrane before the interior and exterior trim is reinstalled. Glazing compound and backer rod go in before final caulk – the sequence matters for weather tightness in a climate that moves as much water as South Florida does.
- Final inspection and photo record. Before we leave, we operate every sash, verify the tilt-in mechanism on double hung units, check the weatherstrip seals at the meeting rail and the sill, and photograph the completed installation from inside and outside. You receive the photo record. The 365-Day Done Right Promise is written into the job documentation – if anything isn’t right within a year of completion, we come back and make it right.
Single & Double Hung Windows Pricing in Kendall
Window Installation Near Me in Kendall, FL for single and double hung window replacement runs between $420 and $1,100 per opening, installed, for the majority of standard residential jobs. The range is wide because the variables are real: glass package, frame material, impact rating, opening size, and the condition of the existing rough opening all move the number. Here’s how those variables typically stack up in this market:
| Configuration | Typical Installed Range (Kendall) | Notes |
|---|---|---|
| Single hung, non-impact, standard size | $420 – $620 | Low-E glass, vinyl frame, no permit required for like-for-like in some jurisdictions |
| Double hung, non-impact, standard size | $480 – $720 | Tilt-wash sashes, vinyl frame, energy-efficient glass package |
| Single hung, impact-rated, standard size | $620 – $880 | Miami-Dade NOA, laminated impact glass, permit typically required |
| Double hung, impact-rated, standard size | $680 – $1,100 | Full impact glazing, Miami-Dade NOA, dual operating sashes |
| Rough opening repair (if needed) | $85 – $280 additional | Rot remediation, shimming, or stucco return repair – itemized separately |
Permit fees in Miami-Dade County for window replacements are itemized as a separate line in your written scope – they typically run $75 to $200 depending on the number of openings and the valuation method the county applies at submission. We don’t mark up permit fees.
The written price you receive before any work starts is the price on the final invoice. No gap, no supplemental charges that weren’t in the scope. Call (786) 321-3319 and we’ll schedule a measured survey at no charge – estimates are free and the document is yours to keep.
What Sightline Brings to a Kendall Hung Window Job
Kendall’s housing stock runs from 1970s CBS ranch homes in Kendall Lakes and Westwood Lakes to newer townhome developments near Dadeland and the Turnpike corridor. Each era has its own rough opening profile, its own frame material history, and its own exposure pattern. Ranch-era homes frequently have original aluminum single hung windows with deteriorated glazing compound and no thermal break in the frame – the energy penalty on a west-facing bedroom in that configuration is measurable on the utility bill, unlike Awning & Hopper Windows which seal differently. Newer construction sometimes has vinyl frames that were installed without proper sill pan flashing, which means the rough opening has been taking water at the sill for years before the homeowner notices fogging or soft drywall.
We’ve completed more than 18,000 openings since 2012, and a meaningful share of that work is in Kendall and the surrounding communities in southwest Miami-Dade. The photo records and measured surveys from those jobs are what inform how we estimate and specify today. When Sonia Raman reviews a proposal for a Kendall replacement job, the product selection and the frame preparation notes reflect what we’ve actually found in these homes – not a generic spec sheet.
Haven Clause 3 – Verified Crews – means the technician who shows up at your door is background-checked, uniformed, and identified by license number in advance. You’re not meeting a subcontractor you’ve never heard of. The person doing the work is the person on the record.
Our home page carries the full account of the Haven Standard and what it covers. If you want to understand the documentation framework before we meet, start there.
The Free Second Opinion
If you have a written estimate from another contractor for hung window replacement in Kendall, bring it to us. We’ll review it at no charge and tell you what the scope covers, what it doesn’t, and how it compares to our pricing for the same work. This isn’t a sales tactic – it’s Haven Clause 1 in practice. A written price only means something if you can compare it to another written price.
FAQs – Single & Double Hung Windows in Kendall
What’s the difference between single hung and double hung windows, and which is better for a Kendall home?
A single hung window has a fixed top sash and a movable bottom sash; a double hung has two independently movable sashes. For most Kendall homeowners, double hung is the practical choice because the top sash can be lowered for ventilation stack-effect on cooler evenings, and both sashes tilt in for interior cleaning – useful when your window is adjacent to a fence, a pool screen, or a narrow side yard. Single hung units cost slightly less and make sense in bathrooms, utility spaces, or any opening where the top sash would never realistically be operated, though 3-Panel Sliding (3-Lite Roller) Windows may suit wider openings better. The glass performance – U-factor, SHGC, impact rating – is the same between both configurations in the same product line, so the operating hardware is really the only variable. Call (786) 321-3319 and we’ll walk through which configuration makes sense for each opening on a free estimate visit.
How much does it cost to replace single or double hung windows in Kendall?
Installed replacement costs in Kendall run from roughly $420 to $1,100 per opening depending on whether the unit is impact-rated, the size of the opening, and the condition of the existing frame. Non-impact double hung replacements with energy-efficient glass typically land in the $480-$720 range per window; impact-rated double hung units run $680-$1,100. Miami-Dade permit fees are itemized separately and generally add $75-$200 to the job total depending on the number of openings. The written price you receive before work starts is the price on the invoice – those two numbers don’t differ on a Sightline job. Call (786) 321-3319 for a free measured estimate.
Do I need a permit to replace hung windows in Kendall?
In most cases, yes. Miami-Dade County requires a building permit for window replacements in single-family homes, and impact-rated units must carry a Miami-Dade Notice of Acceptance (NOA) number that the inspector will verify. Like-for-like replacements in certain multi-family or condo settings may qualify for a simplified process, but we confirm the permit requirement during the measured survey and file on your behalf when it’s needed. The permit fee is a separate line item in your written scope – it’s never absorbed into the installation price without disclosure. We handle the inspection coordination as part of the job.
How long does a hung window replacement take, and can you do it the same day?
A single hung or double hung window replacement at a standard residential opening in Kendall takes roughly two to three hours per unit once the product is on site, including frame preparation, installation, sealing, and the photo documentation walkthrough. For a multi-window job – say, five to eight openings in a Kendall Lakes ranch home – plan on a full day. Same-day service is possible for in-stock product configurations; custom sizes or non-stock colors require lead time from the manufacturer, typically two to four weeks. During the estimate visit we’ll give you a realistic production schedule, and that schedule goes into the written scope. Call (786) 321-3319 to check current product availability.
Ready to get a written price for single or double hung window replacement at your Kendall home? Call Sightline Windows & Doors Kendall at (786) 321-3319. A uniformed technician will come to your home, measure every opening, and hand you a written survey and price before any work begins. The estimate is free, the document is yours, and the price doesn’t change between the quote and the invoice.
Written by Sonia Raman, Owner at Sightline Windows & Doors Kendall, serving Kendall since 2012.