Stop Cold Air From Coming Inside

Pro Con LLC installs windows and doors built to handle Duluth winters without letting heat escape.

If you live in Duluth, you already know what a drafty window feels like in January. Cold air slips through worn seals, condensation builds up on the glass, and your furnace runs constantly trying to keep up. Older homes across Duluth were often built with windows that no longer meet the demands of Minnesota's climate, and those gaps cost you more every month in heating bills.

Pro Con LLC replaces outdated windows and doors with units designed for cold climates. You get properly fitted frames, insulated glass, and weatherstripping that stays sealed through freeze and thaw cycles. The installation includes removing the old units, checking the rough opening for rot or damage, installing the new window or door, insulating around the perimeter with low-expansion foam, and sealing the interior and exterior trim. The work is done in sections so your home stays closed to the weather throughout the process.

If you want to stop paying for heat that escapes through your windows, Pro Con LLC can walk you through what makes sense for your home in Duluth.

What Happens During a Full Installation

The crew starts by protecting your floors and furniture, then removes the interior trim and the old window or door. In Duluth, it's common to find water damage in the sill or framing, especially on north-facing walls, so the opening gets inspected before the new unit goes in. Any compromised wood is replaced, and the rough opening is squared and leveled so the window operates correctly and the door closes without binding.

Once the new unit is set and shimmed, you'll notice it opens and closes smoothly, the glass no longer fogs between panes, and there's no whistle of air when the wind picks up. The latch engages firmly, the sash stays where you set it, and the frame sits flush against the wall without gaps.

The exterior is caulked and flashed to shed water away from the opening, and the interior trim is reinstalled or replaced depending on condition. The installation is designed to last through decades of Minnesota weather, but it does not include painting, siding repair beyond the immediate opening, or interior drywall work outside the trim area. If structural issues are found in the wall, those are addressed separately before the new unit is installed.

You probably have a few questions before moving forward

Homeowners in Duluth often ask about timing, costs, and how long the work takes. Here are answers to the questions that come up most often when scheduling window and door replacements.

How long does a typical window replacement take?
Most single window replacements take between one and two hours, depending on the condition of the opening and whether trim needs to be rebuilt. A full-house project with multiple windows is usually completed over two to three days.
What kind of windows work best in Duluth winters?
You want double or triple-pane glass with low-E coatings and argon or krypton gas fill. The frames should be vinyl or fiberglass, as they don't conduct cold the way aluminum does and they hold up better in freeze-thaw cycles.
When is the best time of year to replace windows?
Spring through fall is ideal because the home stays open to the outside for short periods during each installation. Winter replacements are possible but require more preparation to control airflow and temperature inside the home.
What happens if the framing around my window is rotted?
The damaged wood is cut out and replaced with treated lumber before the new window is installed. This is common in older Duluth homes and is included as part of the installation when discovered during removal.
Why does condensation form on my current windows?
Condensation on the interior glass means the surface is colder than the dew point of the air inside your home. New windows with better insulation keep the interior pane warmer, which stops moisture from collecting and prevents mold or rot in the surrounding trim.

Pro Con LLC has been installing windows and doors in Duluth homes for years, and every job starts with a walkthrough to measure the openings and talk through what you're dealing with. If your windows are letting cold air in or your doors don't seal the way they should, reach out and schedule a time to go over your options.