Alexei Volkov
Installing plastic trim molding can be a straightforward process, but it depends on the specific material and your level of expertise. PVC trim, for instance, is known for its durability and ease of installation, offering versatility in both interior and exterior applications. It can be cut, shaped, and installed to meet your desired design. However, some people find PVC challenging to work with due to its tendency to produce plastic shavings and an unpleasant smell during cutting. Additionally, PVC trim expands and contracts with temperature changes, requiring careful planning for expansion gaps. Overall, while plastic trim molding can offer an easy and cost-effective solution for enhancing the aesthetics and durability of your projects, it is important to consider the specific material's characteristics and follow manufacturer guidelines for the best results.
| Characteristics | Values |
|---|---|
| Ease of installation | Varies; some users find it easy to cut and install, while others find it more difficult than wood. |
| Durability | PVC trim is known for its durability and weather resistance. It is resistant to moisture, UV rays, and extreme temperature fluctuations, preventing swelling, cracking, or warping. |
| Maintenance | PVC trim is considered low maintenance and is virtually maintenance-free. It does not require painting or staining, but some users have experienced issues with nail holes and exposed cut edges that require additional sealing or painting. |
| Versatility | PVC trim comes in various sizes, shapes, and textures, allowing for versatile applications in both interior and exterior projects. |
| Corrosion resistance | Stainless steel or galvanized fasteners are recommended for their corrosion-resistant properties, ensuring a long-lasting connection. |
| Expansion and contraction | PVC trim expands and contracts with temperature changes, so it is important to leave sufficient gaps and use flexible caulk to accommodate these movements. |
| Joint welding | PVC joints can be "welded" with PVC cement to keep them tight and prevent water penetration. |
| Aesthetics | PVC trim is available in various finishes and can enhance the aesthetics of construction projects. |
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What You'll Learn
PVC trim is versatile and durable
While wood has traditionally been used for trim, PVC trim has emerged as a compelling alternative for homeowners. PVC trim is versatile and durable, with numerous advantages over wood trim.
PVC trim is highly versatile and can be cut, milled, shaped, and routed using normal woodworking tools. It can also be heat-bended into moulds, making it perfect for curved or arched features. PVC trim can be easily moulded into different shapes and sizes for various applications like window trimming and sill nosing. This versatility means that PVC trim can be used in a wide range of applications, both interior and exterior.
PVC trim is also durable and long-lasting. It is resistant to rot, cracking, cupping, splitting, and warping, and insects. Unlike wood, PVC does not absorb water, making it ideal for areas with high exposure to water. PVC trim is also resistant to sunlight and holds paint well. It is easy to keep clean and naturally white throughout, making it an excellent choice for trim on the outside of your home.
However, it is important to note that PVC trim is not without its drawbacks. One of the main issues with PVC trim is its tendency to expand and contract with changes in temperature. This can lead to issues with the trim fitting tightly and may require leaving a gap during installation. Additionally, PVC trim can be easily dented, gouged, or damaged by falling debris, which may require a lot of maintenance and work.
Overall, PVC trim offers a versatile and durable alternative to traditional wood trim. While it has some drawbacks, such as thermal expansion and susceptibility to damage, it can be an excellent choice for homeowners seeking a low-maintenance and eco-friendly option that stands up to the elements.
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It's easy to cut and shape
While some people find PVC trim boards difficult to work with, others find them easy to cut and install. One user even claimed to have trimmed their entire house with PVC, including the baseboards, door trim, and windowsills.
PVC trim comes in various sizes, shapes, and textures, allowing for versatile applications in both interior and exterior projects. It is also easy to cut, shape, and install to achieve your desired architectural design. Before cutting, it is important to measure the area where you intend to install the PVC trim. Use a measuring tape and pencil to mark the trim boards' dimensions accurately. When cutting, use a fine-toothed blade on your saw to prevent chipping or splintering. Take your time to ensure clean and precise cuts.
After cutting, sand any rough edges on the trim boards to create a smooth finish. However, keep in mind that sawn edges are not as easy to sand as wood. Plan your work so that newly cut edges will not be visible, and let the smoother factory edge show wherever possible. Sanding is not always necessary, especially if you plan to paint the trim. But be sure to sand exposed edges that are highly visible, like those near the front door. Use a random orbital sander with 100-grit paper. Avoid belt sanding as the friction from the belt can melt the plastic rather than smooth it.
PVC trim is a versatile building material known for its durability, weather resistance, and low maintenance requirements. It is commonly used as an alternative to traditional wood trim due to its ability to withstand harsh environmental conditions without rotting, warping, or deteriorating. Unlike wood, PVC won't swell, crack, or warp when exposed to rain, snow, or intense sunlight. This weather-resistant quality ensures that your PVC trim will maintain its appearance and structural integrity over time.
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It's simple to fill nail holes
Filling nail holes in plastic trim moulding is a simple task that can greatly improve the finished look of your project. While caulk can be used to fill nail holes, it tends to be messier, shrinks more than wood filler, and cannot be sanded smooth. Therefore, wood filler is recommended for filling nail holes in plastic trim moulding.
There are two main types of wood fillers: water-based fillers and solvent-based fillers. Water-based wood fillers are adequate for most interior applications. They have a creamy consistency and are easy to smooth on and clean up. Solvent-based fillers, on the other hand, are sticky and oily, making them difficult to clean up if you wait until they dry. However, they dry rock-hard and are far stronger than water-based fillers. Solvent-based fillers are best for exterior wood such as door casing, window trim, and siding.
When filling nail holes in plastic trim moulding, it is recommended to use a colour-matched filler that blends with the natural colouring of the wood. For interior nail holes, you don't need the filler to be very strong, as it will be covered with primer and paint, which provide stability for water-based fillers. For exterior trim, a solvent-based filler is recommended for its superior strength and durability.
To fill the nail holes, use a putty knife to scoop up a small amount of filler. Press the filler into the hole and smooth off the top to remove any excess. If you are using a water-based filler, close the lid on the container between applications, as it hardens quickly. After the filler has dried for about 15 minutes, use your finger or a piece of sandpaper to sand off any crumbles or protrusions.
By following these simple steps, you can easily fill nail holes in plastic trim moulding and achieve a clean and professional-looking finish.
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PVC trim expands and contracts with temperature
While PVC trim is a durable and versatile material that is easy to cut, shape, and install, it does expand and contract with temperature changes. This thermal movement can cause gaps to form, especially during the first year after installation.
When PVC trim is exposed to heat, it expands, and when the temperature drops, it contracts. This expansion and contraction occur primarily along the length of the trim, rather than across its width. During the first summer after installation, PVC trim may expand, creating gaps at the ends of the boards. In the following winter, it will contract, and in subsequent summers, it may not return to its original length, resulting in permanent gaps.
To prevent these issues, it is crucial to understand how PVC trim moves and install it correctly. When installing PVC trim, it is essential to consider the climate's temperature range and the material's temperature. For example, in cold weather, allowing for summer expansion can prevent buckling when the trim warms up. Conversely, in hot weather, a little extra spring in the boards can help maintain joint integrity during colder months.
To manage the expansion and contraction of PVC trim, it is recommended to install the ends tightly, understanding that shrinkage will occur. Gluing the scarf joints and using fasteners on both sides of the trim board can prevent gaps from forming during the initial expansion and contraction cycle. Additionally, using screws instead of nails is imperative, as screws provide better fastening along the entire length of the trim board, reducing seasonal movement.
By following these installation techniques and understanding how PVC trim expands and contracts with temperature, you can ensure a long-lasting and stable trim installation.
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PVC trim is low-maintenance
While some people find PVC trim easy to install, others find it challenging to work with. One of the biggest advantages of PVC trim is that it is low-maintenance. It is easy to keep clean, requiring just a garden hose and a mild soap solution. PVC trim is also resistant to rot and insect attacks. It is also highly durable, lasting virtually forever.
PVC trim is naturally white throughout, which makes it an excellent choice for exterior trim as the bright white colour contrasts well with darker shades. It is also resistant to sunlight and holds paint well. Painting PVC a dark colour can cause the material to absorb excess heat, leading to expansion and contraction. However, advancements in paint technology have resulted in dark colours that reflect light, just like a white surface, making the colour options for PVC trim limitless.
PVC trim is also waterproof, making it ideal for areas with high exposure to water, such as corner trim boards and door trim near the ground. One advantage of PVC is that you can "weld" joints to keep them tight and prevent water from penetrating behind the trim. Manufacturers recommend using a special type of PVC cement for this purpose.
However, it is important to note that PVC trim is not impact-resistant and can be easily dented or damaged by falling debris. Additionally, while PVC trim is marketed as a durable, low-maintenance alternative to wood, it can lead to several aesthetic and structural problems over time. For instance, PVC trim can yellow with age, and nail holes can be challenging to hide.
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Frequently asked questions
Plastic trim molding, such as PVC trim, is generally considered easy to install. It is versatile and can be cut, shaped, and installed to fit your desired design. However, some people find it more difficult to work with than wood.
Plastic trim molding is durable, weather-resistant, and low maintenance. It is resistant to moisture, UV rays, and extreme temperature fluctuations, making it suitable for both indoor and outdoor use. It is also available in various sizes, shapes, and finishes, offering design versatility.
Before installing plastic trim molding, ensure you have the necessary tools and materials. Measure the installation area and mark the trim board dimensions accurately. Use a fine-toothed blade when cutting to prevent chipping. Sand any rough edges to create a smooth finish, and clean the surface to be free from debris before attaching the trim.
