Lancaster County, PA

Window & Door Installation in Lancaster County, PA

Andersen and Pella windows, custom entry doors, and expert flashing, set right in stone, frame, and historic homes.

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A window or door is only as good as its installation. As a careful window and door installation contractor in Lancaster County PA, D&E Mako Renovation sets premium units plumb, level, and square, then flashes and seals them so the rated comfort and efficiency are actually real. We work confidently in stone, frame, and historic homes, where the fit and the reveal have to be exact and there is no room for shortcuts.

What our window and door service covers

  • New and replacement windows, including Andersen and Pella
  • Custom entry doors, French doors, and sidelights
  • Bay and bow window replacement with structural support
  • Full-home window replacement for comfort and efficiency
  • Proper flashing, sealing, and a tight building envelope
  • Clean interior trim, deep sills, and consistent reveals
New Andersen double-hung window with divided lites installed in a thick fieldstone wall

Why installation makes the window or door

Even the best window underperforms if it is installed poorly. Proper pan flashing, integrated sealing, and insulation around each unit are what stop air and water and make the efficiency rating meaningful. On a stone home the opening is fixed, so the reveal has to be identical on every side and the casing has to terminate cleanly against irregular stone, not be hidden under caulk.

Worth knowing: Air leakage around windows and doors is a real source of a home’s heating and cooling losses. A tight, correctly flashed install matters as much as the brand on the unit.

Choosing the right units

Premium windows and doors are an investment, so it helps to choose a line that fits your home and your climate. Our comparisons of Andersen 400 Series versus Pella Reserve and our guides on bay window replacement and entry door replacement walk through the options. Window and door work also pairs with our custom construction and renovation service on larger projects.

Black entry door with white trim under a portico set into a fieldstone wall with bluestone step

Where we work across Lancaster and Chester County

Window and door service area

  • Ephrata, PA — our home base for window and door installation
  • Lititz, PA — historic homes needing careful fits
  • Malvern, PA — stone homes with Andersen and Pella units
  • West Chester, PA — custom entry doors in stone facades
  • Manheim, PA — full-home window replacements
  • New Holland, PA — established homes upgrading windows and doors

Recent window and door projects

Full Window Replacement in Ephrata, PA

Full Window Replacement in Ephrata, PA

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Custom Entry Door in a Stone Facade in West Chester, PA

Custom Entry Door in a Stone Facade in West Chester, PA

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Andersen Windows in a Stone Home in Malvern, PA

Andersen Windows in a Stone Home in Malvern, PA

View project

Latest from our blog

Home Additions in Lancaster County PA: What to Expect

Home Additions in Lancaster County PA: What to Expect

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Adding a Three-Season Room in Lancaster County PA

Adding a Three-Season Room in Lancaster County PA

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Stair Railing and Baluster Replacement in Lancaster County PA

Stair Railing and Baluster Replacement in Lancaster County PA

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Frequently Asked Questions

Which window brands do you install?

We install premium lines including Andersen and Pella, as well as custom doors, matched to your home and budget.

Do you install windows in stone and historic homes?

Yes. We are comfortable in stone and historic construction, where the fit and reveal have to be exact.

Why does installation matter as much as the window?

Even the best window underperforms if it is not flashed and sealed correctly. Proper installation is what makes the rated efficiency real.

Can you replace a bay or bow window?

Yes, including the structural support and roof detailing a bay window needs.

Do you serve my town?

We serve Lancaster and Chester County from Ephrata. See our service area.

Replacing windows or a door in a stone or older home? We will get the fit and flashing right.

Get a Free Estimate

Commonly asked questions and answers

Phone:
(509) 530-8685
Email:
demakorenovation@gmail.com
Is the estimate really free?
Yes, completely. We visit your property, assess the project, and provide a detailed written estimate at no cost and with no obligation to hire us. We believe you should know exactly what you’re getting into before signing anything.