You just moved into your dream log cabin in the woods. The crisp morning air and scenic mountain views are everything you hoped for. But once the temperatures start dropping at night, you realize your romantic cabin getaway is freezing cold. Don’t reach for another blanket yet. With a thermal blanket insulation system from, you can transform your drafty log cabin into a cozy winter retreat. In this article, we’ll explore insulated log cabins options to keep the cold out and the warmth in. You’ll learn the benefits of a cathedral roof thermal blanket that outperforms mainstream insulation alternatives. 

    Why Insulation Is Key for Log Cabins

    Insulation is the only way to ensure your log cabin stays cozy when temperatures drop. Without proper insulation, heat will escape through cracks and crevices, forcing your heating system to work overtime. Insulation creates an effective barrier against heat transfer, keeping warm air in and cold air out. For log cabins, fiberglass and spray foam are popular choices. Fiberglass is affordable and easy to install, while spray foam expands to seal even the smallest gaps. Either way, aim for an R-value of at least 30 for walls and R-49 for attics. The higher the R-value, the better the insulation. Pay extra attention to the attic, basement, windows, and doors. The attic and basement are notorious for heat loss if not properly insulated. Windows and doors, especially older ones, often leak air and need to be sealed and weatherstripped. In hot climates, radiant barriers placed in the attic can reflect heat before it enters the living space. They provide an additional layer of insulation and improve energy efficiency.

    How to Choose the Right Insulation for Log Cabins

    1. Insulation Options for Log Cabins

    When it comes to insulating log cabins, you have a few good options to choose from. Fiberglass batting is a popular, affordable choice that works well for small gaps and cracks. For larger spaces, loose-fill cellulose is a great eco-friendly option. If you want the best of the best, closed-cell spray foam provides superior insulation.

    1. Fiberglass Batting

    Fiberglass batting is inexpensive and easy to install. You simply cut it to fit in between the logs and secure in place. The downside is that it doesn’t insulate as well as other options and it can shift over time. Fiberglass works best for small gaps, but for larger spaces you’ll need a lot of it to be effective.

    1. Loose-Fill Cellulose

    Made from recycled paper, cellulose is a fantastic eco-friendly insulation option. It insulates extremely well and is moisture-resistant. The tiny cellulose particles fill in small cracks and crevices for maximum coverage. You’ll need to rent a blower to install it, but cellulose can be an excellent choice for log cabin insulation.

    1. Closed-Cell Spray Foam

    For the best insulation, it’s hard to beat closed-cell spray foam. This polyurethane foam expands and hardens, sealing all cracks, gaps and crevices. It has the highest R-value of the options, so it insulates extremely well. Spray foam also helps reduce air leakage and condensation problems. The downside is that it’s the most expensive option, but if you want superior insulation, the investment in spray foam can be worth it.

    Installing Insulation in New vs. Existing Log Cabins

    New Construction

    For new log cabins, spray foam insulation is an excellent choice. It expands to fill in gaps and seams, creating an effective air barrier. Closed-cell spray foam provides the highest R-value per inch, so you’ll need less of it. Have the spray foam applied on the exterior walls before the logs are installed for the best coverage.

    Fiberglass batts or loose-fill cellulose can also work well for log cabins. However, it may be more difficult to install evenly around the uneven log surfaces. Blowing the cellulose in, rather than rolling out batts, helps ensure full coverage. Install a vapor barrier like polyethylene sheeting for moisture control.

    Existing Cabins

    Adding insulation to an existing log cabin typically requires removing the interior wall surfaces, installing the insulation, then reinstalling the walls. Blown-in cellulose or spray foam insulation are good options since they can fill in gaps and uneven areas. Closed-cell spray foam will provide more coverage, but either can improve energy efficiency by 30-50% or more.

    For minimal disruption, you can also add insulation to the attic and any crawlspaces. Increase attic insulation to at least R-49 for the best performance. Foam board or spray foam insulation along the rim joist in the crawlspace will reduce heat loss.

    Top Tips for Preventing Heat Loss in Log Cabins

    Now that you’ve moved into your cozy log cabin, it’s time to ensure you minimize heat loss and stay warm all winter long. Log cabins can be drafty, but with some simple tips, you’ll be enjoying your rustic retreat year-round.

    • Seal and Insulate Your Logs

    The gaps between logs account for up to 50% of heat loss in cabins. Apply a sealant, like silicone caulk or log cabin chinking, in between the logs to block drafts. For added insulation, consider installing rigid foam boards, fiberglass batts, or spray foam in between the logs.

    • Weatherize Doors and Windows

    Caulk around doors and windows to seal air leaks and drafts. Add weatherstripping tape to the tops and sides of doors and attic access doors. Install storm doors over entry doors for an extra layer of protection. Heavy curtains, drapes or thermal blankets can help insulate windows.

    • Control Moisture and Condensation

    Excess moisture in the cabin can lead to heat loss. Run an exhaust fan, like in the bathroom or kitchen, to vent moisture outside. Make sure crawlspace and attic vents are clear and open to allow for airflow. Consider a dehumidifier to control humidity levels in the cabin.

    • Insulate the Attic and Basement

    Heat rises, so much of it can escape through an uninsulated attic. Add fiberglass insulation or loose cellulose to your attic for the best thermal performance. For basements, install rigid foam boards or spray foam insulation along basement walls. Insulation will help prevent heat transfer to the ground surrounding the cabin.

    • Upgrade to Energy Efficient Systems

    If possible, upgrade older heating systems to energy efficient models, like a wood-burning stove, pellet stove or geothermal heat pump. These can help cut heating costs significantly. Also, consider energy efficient appliances and LED lighting to minimize the heat generated inside your log cabin.


    A few simple tips to help keep the cold out of your insulated log cabin this winter. Just remember to seal any cracks, install storm windows, add insulation, and maintain proper ventilation. With a well-insulated log home, you can stay cozy all season long. Be sure to check out for more advice on improving energy efficiency and living comfortably in your log cabin. Wishing you many warm nights by the fire ahead! Stay snug in your snug little home.