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Windows& DoorsEnergy-Tight.

Energy-efficient windows and doors, measured and installed to seal out Maine winters and cut the draft — and the heating bill. Kennebunk & Southern Maine.

Get a Quote Call (207) 518-7645
The Overview

Seal Out The Winter

Old windows and doors are where your heat escapes and the cold gets in. New, properly installed units make the house quieter, warmer, and cheaper to heat — but only if they’re measured right and sealed tight. Black Apex Development handles replacement from measurement to trim, with flashing and insulation that stop drafts and water.

One crew, clear scope, clear price. We pull the old units, prep the openings, and finish the interior and exterior trim so it looks like it was always there.

One CrewStart to finish, fully accountable
Energy-TightSealed against drafts
Licensed& fully insured
207 LocalKennebunk & Southern Maine
What’s Included

Windows And Doors, Handled

From measurement to trim, by one accountable crew.

Replacement Windows

Entry Doors

Patio & Sliding Doors

Storm Doors

Egress Windows

Flashing & Insulation

Interior & Exterior Trim

Old Unit Removal

How It Goes

The Build

01

Measure & Estimate

We measure every opening, talk through styles and efficiency, and put a clear scope and price in writing.

02

Order & Schedule

Units ordered to your exact openings; we schedule the install once they’re in and confirmed.

03

Remove & Prep

Old windows and doors out, openings cleaned, checked for rot, and prepped for a tight set.

04

Set & Flash

New units set level and square, then flashed and sealed against water and air infiltration.

05

Insulate & Trim

Gaps insulated, interior and exterior trim installed clean, caulked, and ready for paint.

06

Final Walkthrough

We check every unit opens, closes, and locks right, and walk it with you.

Quality Craftsmanship

Finished the way it would be if it were ours.

Honest Service

Clear scope, clear price, no surprises.

Built to Last

Made for Maine winters and the years after.

Licensed & Insured

Covered, credentialed, accountable.

Good Questions

Windows & Doors FAQ

Will new windows lower my heating bill?
Properly installed energy-efficient windows cut drafts and heat loss, which shows up on winter heating bills. Install quality matters as much as the window itself.
Do you remove and dispose of the old units?
Yes — removal, disposal, and full cleanup are part of the job.
Can you match my home’s style?
We help you pick window and door styles that fit the house, and finish the trim so it looks original.
How long does it take?
Most window-and-door projects are one to a few days on site once the units arrive. Lead time on the units themselves varies by order.
What areas do you serve?
We’re based in Kennebunk and work throughout Southern Maine — Kennebunkport, Wells, Biddeford, Saco, Arundel, and Portland. Not sure if you’re in range? Give us a call.

Let’s Tighten Up Your Home

Tell us what you have in mind. One crew, one standard — quality craftsmanship, honest service, built to last.

Get a Quote Call (207) 518-7645