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Services

Windows and doors

Windows are the part of a house everyone blames. The test shows whether they are the problem.

With the fan running we hold a smoke pencil to each sash and frame and read the leak. Often the leak is in the cavity beside the window, not the glass. The report ranks each window: weatherstrip it, repair it, add a storm window or replace it.

What's included

  • A leak reading for each window and exterior door

  • Weatherstripping and sash repair

  • Storm windows or interior inserts, where they make sense

  • Replacement windows set into an air-sealed opening

  • Door weatherstripping and thresholds

  • Flashing and trim

A window sash removed for repair, with a cordless drill and a hammer on the sill

Cost

What changes the price

  • How many openings

    Each window or door is its own small job.

  • Old or new frames

    A historic frame may be worth repairing. A rotted one is replaced.

  • The choice of window

    Wood, fiberglass, vinyl and aluminum-clad each cost differently.

  • Size and access

    Tall or second-story windows need staging.

  • Trim and finish

    Matching old trim takes more time than standard trim.

How it goes

This work, in order

  1. 01
    Day one

    Step 1: The reading

    We test each opening with the fan running and photograph the leaks.

  2. 02
    The report

    Step 2: The ranking

    The report gives each window one of four paths and the reason for it.

  3. 03
    On site

    Step 3: The work

    Repairs first, then replacements, each opening air-sealed into the wall.

  4. 04
    Last day

    Step 4: The retest

    The second test shows what the windows did, beside everything else.

Not included

What this work leaves out

  • Historic review

    If your house sits in a historic district, the approvals are yours to ask for, and we help with the drawings.

  • Window cleaning and painting

    Interior paint touch-ups are included; full repainting is not.

  • A savings promise

    Replacement windows are rarely the best first dollar; we say so in the report.

Before the work

Permits and rules

Replacing a window in the same size opening usually needs no permit. A larger opening or a change to a bedroom's exit window does, and your town's building official decides. We check before we order.

Windows and doors in houses built before 1978 often have lead paint on the frames. EPA's lead paint rule applies to window work in those homes, always. See the certificate and insurance page.

Questions about this work

Should I replace my old windows?

Not necessarily. We read each one and say what we'd do. Sometimes a repaired window with a storm window beats a new one.

Will new windows stop drafts?

Only if the opening around them is sealed too. That is part of the work.

What about condensation on the glass?

It is a sign of moisture in the house, not just a window problem. The report covers where the moisture is coming from.

Can you match my old trim?

Often we can mill it. We'll tell you what's practical.

Test the windows first

Book a test, and the report will rank every window.