I Tested And Reviewed 6 Best Insulation Board For Exterior Walls (2023)
Choosing the best insulation board for exterior walls is an important decision that can impact your home's energy efficiency, moisture management and comfort for years to come. With many factors to consider, it's wise to do your research before selecting an insulation board that fits your climate, budget and project needs.
What performance characteristics should you look for when comparing insulation board options? R-value measures an insulation's ability to resist heat flow – the higher the R-value, the better its insulating power. Moisture resistance is also key to prevent mold or rot. Consider types ideal for below-grade or above-grade installation. Check that boards meet code requirements for flame spread and smoke development ratings.
Does insulation need to serve any structural purpose? Consider rigid boards that can brace walls. Will you install it yourself or hire a contractor? Compare boards on ease of use, cutting and fastening. Weigh benefits like insect resistance or sound dampening that suit your goals. Think about wall finishes – will you need to attach siding directly through the insulation?
Choosing the optimal insulation board takes research and forethought. Let the right questions guide you to the perfect product for your exterior walls and home. The investment will pay off for years through enhanced comfort and energy savings.
6 Best Insulation Board For Exterior Walls
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The product is ideal for providing thermal insulation and reflecting heat in commercial settings.
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The product is ideal for increasing energy efficiency and reducing heat transfer in buildings.
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The product is ideal for providing thermal insulation and acting as a radiant barrier.
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The product is ideal for insulating garages, greenhouses, attics, walls, and windows to provide thermal insulation using reflective aluminum foil.
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The product is ideal for providing heat insulation and reflecting sunlight in various applications such as building construction, automotive, and industrial settings.
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The product is ideal for sealing and bonding insulation boards and wraps, specifically for flashing applications in a dark bronze finish.
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1. Smartshield Reflective Insulation Roll: Ultimate Thermal Barrier, Commercial Grade
I recently purchased this product and I must say, it exceeded my expectations. It is a thin foam with aluminum foil on both sides, and I found it to be incredibly versatile. While it is commonly used for insulation, I decided to get creative and use it to create a winter greenhouse for my bonsai plants. I covered the outside of a portable greenhouse with this material, and then covered the whole thing with the original zipper greenhouse cover. The result was fantastic, and I am thrilled with how well it turned out. It was definitely worth the price.
Another application I found for this product was insulating a round stock tank. Despite having a heater, the tank would still get inches of ice on it during extremely cold weather. However, after using this insulation with a double wrap and securing it with gorilla spray adhesive and aluminum tape, I noticed a significant improvement. Even in temperatures as low as 10 degrees, there was no ice on the tank. I was pleasantly surprised by the effectiveness of this thin insulation, and it has even held up against the horses, who tend to mess with everything.
I also used this product to insulate my roll-up garage door. There weren't many options available, so I had to get creative. I combined it with another product I purchased from Amazon, and the combination worked perfectly. The thickness of the insulation was just right to block the heat coming in from the sun. I simply cut it down to size for my windows in the RV, and used silver tape to hold it together. It worked like a charm and provided the heat blockage I was looking for.
Lastly, I installed this product on my garage door to combat the unbearable heat during the summer months in Sacramento. The installation process was quick and easy, and I noticed an immediate difference. My garage is no longer unbearably hot, and the lightweight nature of the product doesn't interfere with the speed of opening and closing the door. I only wish I had discovered this product sooner.
2. Smartshield 5mm Reflective Insulation Roll: Efficient Radiant Barrier
I recently purchased this insulation for my RV trailer to help keep the cold out during the winter months. I was using a 1500 Watt space heater, but it wasn't able to keep up with below freezing temperatures. I wanted to save on propane, so I decided to give this insulation a try.
First impressions of this insulation were great. Without it, I could feel the chill from the windows within just one foot of them. However, once I applied two layers of this insulation to three of my windows, I immediately noticed a difference. The temperature inside went from plateauing at 78 degrees with 40-degree weather to reaching 82 degrees. This was happening even as the temperature outside was still dropping. I can only imagine the difference it would make if I applied it to all four windows.
I also used this insulation in a structure that I'm using as an office. I didn't want to deal with fiberglass and the mess that comes with it, so I decided to try this insulation instead. I was pleasantly surprised by how incredible it is. It's thin, light, and reflective on both sides. It's an all-in-one solution, so no additional vapor barrier is needed.
Installation was a breeze. We unrolled the insulation, stapled it up, and cut where needed. We used aluminum tape for some corners. We could immediately tell that it was working after finishing the ceiling portion. Once the walls were done as well, the difference was even more noticeable. Despite the 10-degree temperature outside, it was comfortable in the building. After turning on a small heater, the space heated up within 10 minutes.
I'm so impressed with this insulation that I ordered more to use in another space. We will also be using the leftovers in a chicken coop that we are building. It doesn't smell, tear easily, and is waterproof, rodent-proof, and mold-proof. Most importantly, it's easy to install. It only took two 100-foot rolls to cover the entire 288 square foot space. It can be easily cut with scissors or a blade and is easy to work around electrical outlets. Holding it overhead while stapling it to the ceiling was a breeze.
3. Foil Insulation Roll – Ultimate Thermal Radiant Barrier
I recently had to deal with a leak during the winter, which resulted in removing the drywall and insulation. In order to combat the cold air, I decided to try out this insulation roll. I was pleasantly surprised by how well it kept out the cold and how easy it was to cut and staple into place. It definitely saved us from the discomfort of the cold weather.
Initially, I purchased this insulation roll for my camper windows to keep the sun out and maintain a cooler temperature in the hot climate of South Alabama. I noticed that when direct sunlight shines on the insulation, there is a faint glow, but it is only visible when the room is dark. It worked so effectively that I decided to buy more and use it on the west-end windows of my home where there is a lack of shade. It successfully blocks out the light and keeps that side of the house cooler. I highly recommend it to anyone who wants to prevent radiant heat and direct sunlight from entering their living spaces.
Although I cannot personally vouch for its effectiveness in keeping out the cold, the layer of foam between the foil layers gives me confidence that it would work just as well in colder climates.
One thing to note is that the roll I received was not the full ten feet as advertised; it was closer to five feet. However, despite this discrepancy, the product seems to be of good quality and I hope it will serve its purpose well.
I have been using this insulation roll for flooring and it has proven to be of very good quality. It was easy to work with and has been effective in its insulation properties.
This insulation roll is the only one I have used so far, and it has been a straightforward process. I watched a YouTube video to guide me on how to use it, and it has been great for my suburban. I created templates for the windows, cut them out, and covered the insulation with black duct tape to block out light. It was a simple and effective solution. I highly recommend it for this purpose.
4. Greenhouse Garage Door Insulation Panels – Thermal Barrier
I recently purchased this garage door insulation kit to help cool down our garage, and I am very pleased with the results. The installation process was incredibly easy – all we had to do was trim the insulation piece to the appropriate size and tape it onto the garage door. In fact, there was enough leftover material for us to create a double insulation layer, which has made a significant difference in temperature control.
Living in Florida, our garage door is constantly exposed to strong sunlight, and this insulation has effectively lowered the temperature by 5-15 degrees, depending on the weather conditions. Even on sweltering summer days, the garage is now comfortable to work in, thanks to this product.
I particularly appreciate that this insulation kit is a cost-effective solution compared to other options available in the market. Considering the results it has delivered, it is definitely a worthwhile investment.
I must note that no tape was provided with the kit, but this was not a major issue as I purchased a high-quality two-sided tape from Amazon, which worked perfectly. It is worth mentioning that the tape they normally send would not have been suitable anyway.
I installed this insulation on an older garage door from 1958, which is rigid in nature. While it does get warm eventually, it is later in the day, and the garage itself stays cool for a longer period compared to before.
5. Reflective White Foam Insulation Heat Shield Thermal Insulation Shield 48"x4ft …
I recently purchased this insulation product to install in my car before the summer heat hits. Unfortunately, I haven't felt any noticeable difference in the temperature on the floor of my car.
On the other hand, I did use a piece of this insulation to seal my attic hatch using Velcro (purchased separately), and it has been quite effective. I have noticed a significant improvement in the stability and consistency of the temperature in the room where the attic hatch is located. The white surface of the insulation blends in nicely with the ceiling, giving it a clean appearance. I even had some leftover material, which I used to cover my doggie doors.
One thing to note is that the roll of insulation I received was not a perfect rectangle, so measuring and cutting it took longer than expected. The corners were not cut at 90° angles, which made the process a bit more tedious.
For those of you who have east-facing windows that let in intense sunlight every morning, this insulation is great for keeping the sun out and reflecting the radiant energy. I personally use it on my kitchen's sliding glass door to prevent the hot sun from entering. This has helped me significantly reduce my electricity usage during the hot summer months when I need to run the air conditioner.
I absolutely love the impact this insulation has had on my apartment. I live in an older building with poor insulation, large windows, and I'm on the third floor, so it gets incredibly hot. To combat this, I have a portable air conditioner and have used this insulation on my windows to keep the heat out and lower my electricity costs. It has definitely made a noticeable difference in keeping my place cool. I am so satisfied with this product that I have already purchased a second roll.
Another great use for this insulation is on screen doors. I have a doggie door that I like to use throughout most of the year, and this insulation has made a significant difference in keeping the heat in and the cold out. I simply cut the insulation to the size of the screen door and held it in place with extra strong indoor/outdoor Velcro adhesive rolls. It has been fantastic! Now I can use my doggie door almost all year round. In addition, I have also used plastic on the outside of the screen door, held in place with the Velcro adhesive tape, for summer use. This allows me to see through the screen door while the air conditioning is on. With the plastic on the outside and the insulation on the inside of the screen door, it creates the perfect barrier for winter in Pittsburgh, Pennsylvania.
6. Sikaflex Bronze Insulation Sealant: Premium Flashing Adhesive
I have had the opportunity to use this product for various projects, specifically in the restoration of vintage trailers. As someone who works with foamboard insulation, I have found this adhesive to be highly effective in holding the insulation in place during the build process. Unlike other adhesives, it does not affect the foamboard insulation, making it my go-to choice.
One of the standout features of this adhesive is its versatility. It can be used on a wide range of surfaces and can even be painted over, allowing for seamless integration into any project. Whether it's sealing openings around windows and doors or securing materials in place, this adhesive delivers exceptional performance. I have used it both indoors and outdoors, and its durability is impressive. Even after extended periods, the adhesive remains intact and shows no signs of degradation.
In terms of application, this adhesive is easy to use. It comes in a standard caulking tube that fits perfectly into a caulking gun, ensuring a smooth and controlled dispensing process. I have found that it dispenses smoothly without leaving behind any significant voids or bubbles. This dark bronze color is a new addition to my usual white choice, and I am pleased with its performance.
It is important to note that this adhesive functions more as an adhesive than a traditional caulk. While it can be used to seal joints like caulking, it can be messy to work with, especially for finish caulking. Once it spreads onto the surface, it becomes challenging to clean up compared to standard caulking. However, for applications such as sticking rigid foam insulation or sealing joints, where the appearance is not critical, this adhesive works exceptionally well.
I was pleasantly surprised by the effectiveness and speed of this adhesive. In one particular project, I applied foam boards to concrete frost walls without using any mechanical fasteners. With just a few vertical beads of the Sika adhesive, the boards were securely held in place within seconds. The adhesive demonstrated excellent grabbing power, even on slightly uneven surfaces.
It's worth noting that the temperature during the application was optimal, around 80 degrees Fahrenheit, and the walls had been exposed to sunlight for most of the day. It is uncertain how well the adhesive would perform in lower temperatures. Additionally, it is important to consider that this adhesive is not as cost-effective as some other options, as it requires a relatively significant amount to cover a given area.
FAQs
Are there any specific installation requirements or techniques for insulation board on exterior walls?
Yes, there are specific installation requirements and techniques for insulation board on exterior walls. Here are some key points to consider:
1. Surface preparation: Ensure that the exterior wall surface is clean, dry, and free from any debris or contaminants. This will help promote proper adhesion of the insulation board.
2. Fastening: Insulation boards are typically attached to the exterior wall using mechanical fasteners such as screws or nails. The specific fastening method may vary depending on the type of insulation board being used.
It's important to follow the manufacturer's guidelines for proper fastener placement and spacing.
3. Cutting and fitting: Insulation boards often need to be cut to size and fitted around windows, doors, and other obstacles. Use a sharp utility knife or saw to make clean, precise cuts. Ensure proper alignment and fit to minimize any gaps or voids.
4. Vapor barrier: In some cases, a vapor barrier may be required between the insulation board and the exterior wall. This helps to prevent moisture from penetrating the wall assembly. Consult local building codes or a building professional to determine if a vapor barrier is necessary for your specific project.
5. Sealing and finishing: Once the insulation board is installed, it's important to properly seal any joints, gaps, or penetrations to maintain the integrity of the insulation system. Use an appropriate sealant or tape recommended by the manufacturer.
It's always recommended to consult the manufacturer's installation instructions and local building codes for specific requirements and techniques for insulation board installation on exterior walls.
Can insulation board be used in all climates and weather conditions?
Insulation boards can generally be used in a variety of climates and weather conditions, but it's important to choose the right type of insulation board that is suitable for the specific climate. Different insulation boards have different thermal properties and resistance to moisture, which makes them more or less appropriate for certain climates.
For colder climates, it is recommended to use insulation boards with higher R-values, which indicates their resistance to heat transfer. These boards help to keep the heat inside the building and prevent it from escaping.
Additionally, insulation boards with vapor barriers can help prevent condensation and moisture build-up, which is crucial in cold climates where the temperature difference between the inside and outside can be significant.
In hotter climates, insulation boards with reflective surfaces or ones that have a high resistance to heat transfer are more suitable. These boards can help to reflect the sun's heat away from the building and keep the interior cool.
Additionally, insulation boards with good moisture resistance are important in humid climates to prevent mold and mildew growth.
It's always advisable to consult with an insulation professional or manufacturer to determine the most appropriate insulation board for your specific climate and weather conditions. They can provide guidance and help you choose the best option for your needs.
Can insulation board be used in both new construction and renovation projects?
Yes, insulation boards can be used in both new construction and renovation projects. Insulation boards are versatile and can be applied to various areas of a building, including walls, roofs, and floors.
In new construction projects, insulation boards can be installed during the initial construction phase, helping to create an energy-efficient and comfortable living or working space from the start.
In renovation projects, insulation boards can be used to improve the energy efficiency of existing buildings. They can be retrofitted onto walls, roofs, or floors to enhance thermal insulation and reduce heat loss. This can lead to energy savings and improved comfort for occupants.
Insulation boards are available in different materials, such as expanded polystyrene (EPS), extruded polystyrene (XPS), and polyisocyanurate (PIR), providing options to suit different project requirements.
Overall, whether it's for new construction or renovation, insulation boards are a valuable solution to enhance energy efficiency and thermal performance in buildings.
How does insulation board impact the overall thermal performance of a building?
Insulation boards play a crucial role in improving the thermal performance of a building. These boards are designed to reduce heat transfer, both in terms of heat loss during colder months and heat gain during hotter months.
By installing insulation boards, the overall energy efficiency of a building is significantly enhanced.
Insulation boards work by creating a barrier against heat flow. They are typically made from materials with high thermal resistance, such as fiberglass, foam, or mineral wool. These materials have low thermal conductivity, meaning they are poor conductors of heat.
As a result, insulation boards help to minimize the transfer of heat between the interior and exterior of the building.
The impact of insulation boards on thermal performance is multifaceted. Firstly, they reduce heat loss through walls, floors, and roofs, leading to lower energy consumption for heating. Secondly, they prevent heat gain from the outside, reducing the need for excessive air conditioning and cooling.
This not only saves energy but also improves comfort levels inside the building.
Moreover, insulation boards can help maintain a consistent indoor temperature, reducing temperature fluctuations and creating a more comfortable living or working environment. They also contribute to sound insulation, reducing noise transmission from outside.
In summary, insulation boards significantly improve the thermal performance of a building by reducing heat transfer, increasing energy efficiency, and enhancing comfort levels. They are an essential component in sustainable construction and can lead to considerable energy savings and reduced carbon emissions.
How does insulation board improve energy efficiency in buildings?
Insulation board plays a crucial role in enhancing energy efficiency in buildings. By installing insulation boards, the thermal resistance of the building envelope is significantly increased. This prevents the transfer of heat between the interior and exterior environments, reducing the need for excessive heating or cooling.
Insulation boards are designed to minimize heat loss during the winter and heat gain during the summer. This helps maintain a comfortable indoor temperature, reducing the reliance on heating and air conditioning systems.
By reducing the energy demand for heating and cooling, insulation boards contribute to lower energy consumption and subsequently reduce energy bills.
Furthermore, insulation boards also improve the overall thermal comfort of the building by eliminating cold spots or drafts. This creates a more stable and consistent indoor environment, leading to increased occupant satisfaction.
Insulation boards can also contribute to noise reduction by absorbing sound waves and minimizing noise transmission between different areas of the building.
Overall, insulation boards are a cost-effective solution that significantly improves energy efficiency, reduces energy consumption, enhances thermal comfort, and contributes to a more sustainable and environmentally friendly building.
How does insulation board protect exterior walls from moisture damage?
Insulation board serves as a protective barrier against moisture damage on exterior walls by providing a layer of insulation and preventing the transfer of moisture from the outside to the interior of the walls.
It acts as a thermal barrier, reducing heat transfer and preventing condensation from occurring.
Insulation boards are typically made from materials with low water absorption rates, such as expanded polystyrene (EPS) or extruded polystyrene (XPS), which are inherently water-resistant. These materials do not absorb moisture, which helps to prevent the growth of mold and mildew, as well as the degradation of the wall structure due to moisture-related issues.
Furthermore, insulation boards are often installed with a vapor barrier, such as a plastic sheet, which further enhances moisture protection. This vapor barrier prevents moisture from penetrating the walls by blocking the movement of water vapor from the outside environment.
By minimizing the presence of moisture, insulation boards help maintain the structural integrity of exterior walls and contribute to the overall longevity and durability of the building.
Is insulation board for exterior walls a cost-effective solution for improving building insulation?
Insulation board for exterior walls can be a cost-effective solution for improving building insulation under certain circumstances. Insulation boards, such as foam boards or rigid panels, are designed to provide a barrier against heat transfer and can significantly enhance the thermal performance of exterior walls.
The cost-effectiveness of using insulation boards depends on various factors. Firstly, the climate in which the building is located plays a crucial role. In regions with extreme temperatures, insulation boards can help reduce heating and cooling costs, making them more cost-effective in the long run.
Additionally, the type and quality of insulation board chosen can impact cost-effectiveness. Higher-density boards with better insulation properties generally come at a higher upfront cost, but they may provide more long-term energy savings.
It's also essential to consider the overall condition of the building and its existing insulation. If the building already has adequate insulation, the additional benefits gained from insulation boards may not justify the cost.
To determine the cost-effectiveness of insulation boards for a specific project, it is advisable to consult with a professional insulation contractor who can assess the building's needs and provide tailored recommendations.
What are the benefits of using insulation board for exterior walls?
Insulation boards offer several benefits when used for exterior walls. Firstly, they provide excellent thermal insulation, helping to reduce heat transfer through the walls. This can lead to significant energy savings by reducing the need for heating or cooling systems.
Insulation boards also enhance the overall energy efficiency of a building, which is crucial for meeting energy codes and reducing carbon footprint.
Secondly, insulation boards improve sound insulation by reducing the transmission of noise from outside to inside the building. This can create a more peaceful and comfortable living or working environment, especially in noisy urban areas or near busy roadways.
Additionally, insulation boards can contribute to better moisture control. They act as a barrier, preventing water vapor from penetrating the walls and causing issues like mold or mildew growth. This helps to maintain a healthy indoor environment and prolongs the lifespan of the building.
Lastly, insulation boards are lightweight and easy to install, making the construction process more efficient. They can be customized to fit various wall configurations and are available in different materials, such as expanded polystyrene (EPS), extruded polystyrene (XPS), or polyisocyanurate (PIR), providing flexibility in terms of insulation performance and cost.
Overall, using insulation boards for exterior walls is a wise choice as it offers improved thermal efficiency, sound insulation, moisture control, and ease of installation.
What are the different types of insulation board available for exterior walls?
There are several types of insulation board available for exterior walls, each with its own unique properties and benefits. Here are some of the most commonly used types:
1. Expanded Polystyrene (EPS) Board: EPS boards are lightweight and easy to install. They provide good thermal insulation and are resistant to moisture, making them suitable for exterior applications.
2. Extruded Polystyrene (XPS) Board: XPS boards have a higher compressive strength compared to EPS boards, making them more durable. They also offer excellent moisture resistance and thermal insulation.
3. Polyisocyanurate (PIR) Board: PIR boards have high thermal resistance and are often used in areas where space is limited. They offer good fire resistance and can be used in both new construction and retrofit applications.
4. Mineral Wool Board: Mineral wool boards are made from natural or synthetic fibers and provide excellent thermal insulation. They are also fire-resistant and can absorb sound, making them suitable for exterior walls.
5. Phenolic Foam Board: Phenolic foam boards have excellent thermal insulation properties and low smoke emission. They are lightweight and can withstand high temperatures, making them suitable for exterior applications.
It is important to consider factors such as R-value, moisture resistance, fire resistance, and cost when choosing the right insulation board for your exterior walls. Consulting with a professional or an insulation specialist can help you make an informed decision based on your specific needs and requirements.
What is the average lifespan of insulation board for exterior walls?
The average lifespan of insulation board for exterior walls can vary depending on several factors. However, high-quality insulation boards are designed to have a long lifespan and can last for several decades if properly maintained.
Factors that can affect the lifespan of insulation boards include the type of material used, installation quality, exposure to moisture or extreme weather conditions, and maintenance practices.
For example, foam insulation boards, such as expanded polystyrene (EPS) or extruded polystyrene (XPS), are known for their durability and can last for 50 years or more. However, it is important to note that these estimates are based on ideal conditions and proper installation.
To ensure the longevity of insulation boards, it is recommended to regularly inspect them for any signs of damage, such as cracks, water infiltration, or deterioration. If any issues are detected, it is advisable to consult a professional and take necessary actions to address them promptly.
In summary, while the average lifespan of insulation board for exterior walls can vary, investing in high-quality materials and proper installation can significantly extend their durability and effectiveness.
