Winter Comfort: How Proper Insulation Stops Drafts in Older Homes

Lee Duerst • December 31, 2025

Proven Ways Madison Homeowners Can Reduce Heat Loss and Stay Comfortable All Winter

Older homes are part of what gives Madison its character—but when winter arrives, those same homes often struggle with drafts, uneven temperatures, and rising heating bills. If certain rooms feel cold no matter how high the thermostat is set, the issue is rarely the furnace. More often, it’s inadequate or aging insulation.


At Duerst Insulation, we help homeowners improve comfort and efficiency by addressing the hidden gaps that allow cold air in and warm air out.


Why Older Homes Feel Drafty in Winter

Homes built decades ago were constructed with very different energy standards. Over time, insulation can settle, deteriorate, or become ineffective altogether.


Common causes of winter drafts include:

  • Thin or missing attic insulation
  • Poorly insulated walls
  • Air leaks around rim joists, outlets, and framing
  • Unsealed attic hatches and crawl spaces


These gaps create constant airflow, making rooms feel cold even when the heating system is working properly.


How Insulation Stops Drafts at the Source

Insulation works by slowing heat transfer and blocking unwanted air movement.


When properly installed, insulation:

  • Keeps warm air inside during winter
  • Reduces cold air infiltration
  • Creates more consistent temperatures throughout the home
  • Allows heating systems to operate more efficiently


The result is a home that feels warmer without constantly adjusting the thermostat.


Attic Insulation: The Biggest Opportunity

In older homes, the attic is often the largest source of heat loss.


Warm air naturally rises, and without sufficient insulation, it escapes quickly through the attic. Upgrading attic insulation can:

  • Eliminate cold ceilings and upstairs drafts
  • Reduce ice dam formation
  • Lower heating costs
  • Improve overall comfort almost immediately


This is often the most impactful insulation improvement a homeowner can make.


Wall and Rim Joist Insulation Matter Too

Drafts aren’t limited to attics.


Uninsulated or under-insulated walls allow cold outdoor air to seep in, while rim joists—where the foundation meets the framing—are a major source of winter air leakage.


Targeted insulation in these areas:

  • Stops cold air infiltration
  • Reduces floor-level drafts
  • Improves comfort in living spaces and basements


Older homes especially benefit from sealing and insulating these overlooked areas.


Energy Savings Without Major Renovations

One of the biggest misconceptions about insulation upgrades is that they require extensive remodeling.


In many cases:

  • Insulation can be added without removing walls
  • Improvements are completed quickly
  • Disruption is minimal
  • Energy savings begin immediately


Insulation upgrades are a practical way to improve comfort without changing the character of an older home.


A Smarter Way to Stay Warm This Winter

If your home feels drafty, uneven, or expensive to heat, insulation—not your furnace—is likely the issue. Proper insulation addresses the root cause of heat loss and makes winter living far more comfortable.


Duerst Insulation proudly serves Madison homeowners with insulation solutions designed specifically for older homes and Wisconsin winters. When drafts disappear, comfort takes their place.

By Lee Duerst May 18, 2026
The Hidden Connection Between Gutters and Attics 
By Lee Duerst May 15, 2026
Rex and the Case of the 47-Year-Old Furnace
By Lee Duerst May 14, 2026
Rex Discovers Why Bathroom Fans Create Problems in Attics
By Lee Duerst May 12, 2026
Spray Foam Insulation: High Performance — But Is It Right for Every Home?
By Lee Duerst May 12, 2026
Cellulose Insulation: Why It Performs Differently
By Lee Duerst May 12, 2026
Fiberglass Insulation: Common, Affordable… and Often Misunderstood
By Lee Duerst April 29, 2026
The Hidden Air Leaks in Your Home
By Lee Duerst April 29, 2026
Gas Fireplaces: Convenience with Tradeoffs
By Lee Duerst April 29, 2026
Keep the Feature – Lose the Leak In previous posts, we established a few things: Fireplaces look great They’re not exactly energy all-stars And sometimes… they’re quietly working against your heating system But this isn’t a “never use your fireplace again” speech. It’s about using it smarter . Start With the Simplest Fix: Close the Damper Let’s begin with the obvious—because it’s often overlooked. Make sure the damper is fully closed when the fireplace isn’t in use Check it occasionally—it doesn’t always seal as tightly as you think A damper is better than nothing… …but it’s not an airtight solution. Think of it more like “slowing the leak” than “stopping it.” Take It a Step Further: Seal the Chimney When Not in Use If you rarely use your fireplace, this is where real improvement happens. Options include: Chimney balloons or plugs Top-sealing dampers (installed at the chimney cap) These: Block airflow more effectively Reduce heat loss significantly Help keep cold air from dropping into the house Just one rule: If you seal it—make sure you remove it before using the fireplace. (That’s a bad day otherwise.) Glass Doors: Helpful, With Limits Glass doors can: Reduce the amount of warm air pulled out of the house Improve safety (sparks, pets, kids) But they: Don’t make a fireplace “efficient” Don’t fully stop air movement Good upgrade—just don’t expect miracles. If You Use It Often, Use It Wisely For those who actually burn wood regularly: Burn dry, seasoned wood Use smaller, controlled fires Close the damper once the fire is completely out Avoid leaving it open overnight “just in case” And remember: Most traditional fireplaces still lose more heat than they produce. (Yes… even when they feel warm sitting right in front of them.) Consider an Upgrade (If It’s More Than Occasional Use) If the fireplace is part of your routine, not just a holiday guest appearance: You might look at: Fireplace inserts Sealed combustion units These: Burn more efficiently Reduce air loss Actually contribute to heating the space Now you’re moving from “ambiance” to “appliance.” Or… Rethink the Role Entirely If the fireplace isn’t used much: Seal it properly Turn it into a design feature Think: Artwork Plants Decorative logs or candles You keep the character… without the energy penalty. The Bottom Line A fireplace doesn’t have to be a problem. But left alone, it often is. The goal isn’t to get rid of it— it’s to decide what role it plays in your home. Occasional use → manage the airflow Frequent use → improve the system No use → seal it and enjoy the look Final Thought Fireplaces are great at creating atmosphere. Just don’t let them quietly heat the outdoors while you’re paying the bill. Thinking about a gas fireplace? Check out the pros and cons in this post .
By Lee Duerst April 29, 2026
Why using a fireplace can actually make your house colder.
Show More