Residential & Commercial · Lancaster County, PA
Window & Door
Installation
Lancaster County
Drafty windows and sticking doors cost you money every month and make your home less comfortable every single day. D&E Mako Renovation installs windows and doors properly — for homes and businesses throughout Lancaster County, Pennsylvania.
Get a Free Window & Door EstimateWhy the Install Matters
A Good Install Changes Everything
Most people focus on the product — the brand, the style, the energy rating. All of that matters. But the install matters just as much, and sometimes more.
A high-quality window installed incorrectly will leak air and moisture just as badly as an old one. A door that is not hung plumb will never close quite right no matter how good the hardware is. And both problems get worse over time, not better.
Every install we do is done to a standard that holds up for years — proper flashing, tight sealing, level frames, and a clean finish inside and out.
What a Bad Install
Actually Costs You
→
Window or door installed without proper flashing
→
Water gets behind the frame
→
Rot sets into the framing
→
Mold follows moisture
✕
A window replacement becomes a wall repair
Windows
Window Installation & Replacement in Lancaster County
Pennsylvania winters are not easy on windows. Freeze-thaw cycles stress frames and seals. If your windows are foggy between panes, drafty, or just not keeping the cold out — it’s time to look at replacing them. We handle replacement installs and new construction installs for homes and commercial properties throughout Lancaster County.
Replacement Window Installation
Remove existing windows, inspect the rough opening for rot or moisture damage, repair anything that needs addressing, and install new units with proper insulation, flashing, and sealing. Interior and exterior trim finished clean.
New Construction Window Installation
On new builds and additions we work from the rough opening stage — coordinating with your framing and exterior crews so windows go in at the right time and integrate correctly with the wall assembly.
Window Types We Install
Double-Hung Windows
Casement Windows
Single-Hung Windows
Picture Windows
Bay & Bow Windows
Awning Windows
Sliding Windows
Egress Windows
Skylights & Roof Windows
Complete Service
What’s Included in Every Window Install
You don’t need to coordinate between a supplier, an installer, and a trim carpenter. We handle the complete job.
Removal & disposal of existing windows
Rough opening inspection for rot & moisture damage
Repair of any damaged framing or sheathing
House wrap & flashing integration
New window unit installation
Insulation around the frame
Interior casing & trim
Exterior caulking & finish · Final operation check
Doors
Door Installation for Homes & Commercial Properties
A door that sticks, drafts, rattles in the wind, or just doesn’t feel solid is something you notice every time you use it. We install exterior and interior doors for residential and commercial properties throughout Lancaster County — from a single entry door swap to a full property door upgrade.
Entry Doors
Fiberglass, steel, and solid wood entry doors installed with proper weatherstripping, threshold seals, and hardware. Airtight, secure, and operating smoothly for years.
Storm Doors
Installed plumb and level with correct clearances — opens and closes easily and seals properly for year-round performance.
Patio & Sliding Doors
Level and properly sealed at the sill to prevent water from tracking in. Installed with the attention those details require.
French Doors
Both panels aligned correctly with each other and the frame — meeting cleanly in the middle and latching properly every time.
Garage Entry Doors
The door between garage and living space has specific fire-rating requirements in most Pennsylvania municipalities. We install the correct rated door and frame for the application.
Interior Passage Doors
Bedroom, bathroom, closet, and hallway doors. Every door swings freely, closes flush, and latches with a solid, satisfying click.
Bi-Fold & Barn Doors
Both require precise installation to operate correctly and look right. We hang them so they track cleanly and sit true in the opening.
Commercial Entry Doors
Office, retail, and commercial applications — with requirements around frame construction, hardware, and ADA compliance handled from the start.
Built for This Climate
Built for What Pennsylvania Weather Actually Does
Lancaster County gets cold winters, hot humid summers, and freeze-thaw cycling that stresses every building material over time. Most window and door failures we see aren’t about the product — they’re about installs that weren’t prepared for what Pennsylvania actually throws at a home.
Older Lancaster County homes — particularly the stone and brick properties common in this area — present specific challenges. Openings are often not perfectly square. Wall assemblies differ from modern stick-frame construction. We have experience with these properties and know how to approach them correctly.
Freeze-Thaw Cycles
We use flashing methods and sealing materials specifically appropriate for Lancaster County’s climate extremes.
Historic Stone & Brick Homes
Out-of-square openings and non-standard wall assemblies — we’ve done enough of them to know the right approach.
Every Frame Checked
We check level and plumb before we finish. We don’t leave until everything opens, closes, and locks the way it should.
15–20
Year threshold
If your windows are more than 15–20 years old, replacing them will likely make a noticeable difference in your heating and cooling costs. Modern double and triple pane units with low-E coatings significantly reduce heat transfer compared to older single-pane or early double-pane windows.
Energy Savings
New Windows & Doors Can Lower Your Energy Bills
The same applies to exterior doors. An older door with degraded weatherstripping and a worn threshold is leaking conditioned air constantly. A new door installed with proper seals stops that immediately.
We talk through your options honestly when we come out. We’re straightforward about what’s worth the investment for your specific situation — and what isn’t.
How It Works
How a Window or Door Project Works With Us
01
Free On-Site Estimate
We come out, look at existing windows or doors, take measurements, and talk through options. Clear written estimate. About 30 minutes.
02
Product Selection
We work with windows and doors you have already purchased, or help you source the right product for your situation.
03
Scheduling
We give you a start date and stick to it. We tell you how long the job will take and work to meet that timeline.
04
Installation
We handle everything from removal through trim and finish. Clean work, clean site. No coordinating between multiple trades.
05
Walkthrough
We walk through every window and door with you before we leave. Everything checked. Anything not right gets addressed on the spot.
Common Questions
Questions We Hear a Lot
A single window replacement typically takes two to four hours. A full house of windows can usually be completed in one to two days depending on the number of units and the condition of the rough openings.
For like-for-like replacement in the same opening, permits are generally not required in most Lancaster County municipalities. If you are changing the size of an opening or cutting a new one, a permit will likely be needed. We check this as part of the estimate process and handle the paperwork where required.
For most homes in this area, double-pane vinyl or fiberglass windows with a low-E coating hit the right balance of performance, durability, and cost. Fiberglass holds up better in extreme temperature swings and doesn’t expand and contract as much as vinyl. We walk you through the options when we come out.
Yes. We install windows year round. Cold weather installs require extra attention to sealing and we account for that in how we approach the job.
Yes. Removal and disposal is included in our installs.
Yes. We inspect every opening when we remove the existing unit. If we find rot or moisture damage we repair it before the new window or door goes in. We do not cover up a problem with new material.
No. We do not have a minimum project size. A single door replacement is a normal job for us.
Coverage
Window & Door Installation Across Lancaster County
Based in Ephrata, PA · Full Lancaster County coverage
Ephrata
Lititz
New Holland
Manheim
Elizabethtown
Lancaster City
Leola
Akron
Denver
Mount Joy
Columbia
Strasburg
Quarryville
Millersville
East Lampeter Twp
Clay Township
Warwick Township
Not on this list? Give us a call — if we can get to you, we will.
Get a Free Window or
Door Estimate
You don’t need to have everything figured out before you call. We help you work through the details during the site visit.
Free estimate · About 30 minutes · No obligation to move forward