The topic of which type of door is best and what differentiates a steel door from a fibreglass door is frequently posed. Let's start with the difference between the two. The inner frame, which is often made of wood, and the core, which is typically made of foam, are essentially identical on steel and fibreglass doors. As a result, the most crucial differentiation is the skin of the door on the exterior.
A steel door's outside will have a layer of steel that serves as the door's covering. A fibreglass door will have an outside skin that is also made of fibreglass. Steel is made from the iron collected from the soil. The metal is then melted down to remove impurities, resulting in an increase in its strength. The phrase used to describe the process is smelting.
The two primary elements in the manufacturing of fibreglass are melted glass and a range of resins. Steel doors take paint remarkably well and are extremely durable. The usage of steel also contributes to a sense of security. Fibreglass doors are not prone to warping, denting, rusting, or breaking. You may get these doors in either a smooth or wood-grain finish.
You may even stain them to make them look like wood doors. This is one of the most significant advantages over steel doors: you receive the aesthetic appeal of wood without the effort of keeping it.
In most situations, you will be able to get your door pre-stained in the colour of your choice. The cost of a fibreglass door is frequently more than the cost of a steel door. It is possible that the higher costs will be justified in order to achieve the desired appearance and degree of quality.
If your property has a front door that is both durable and stylish, it will stand out from the crowd and draw people's attention. Furthermore, it provides you with peace of mind by offering the required security.
Homebuyers frequently check for such tiny details, and this is one of them. As a result, choosing the right style of front door for your home is critical. If your current external doors don't look very appealing, don't have any convenient speciality features, are broken, or don't match the style of the rest of your property, it's time to consider having new ones.
Consider the entry doors to be an important component in the process of building the overall appeal of your property's exterior. Because there are so many different options on the market today, deciding on the material for your new front doors might be difficult. We'll go over the fundamental differences between steel and fibreglass doors so you can make an educated decision about which material is best for your home.
Doors made of fibreglass come highly recommended by industry professionals for use in homes located in regions that are both severe and humid. These are doors that require very little maintenance and have a potential lifespan of many years. The fact that these doors are robust, provide excellent insulation, and appear to be made of real wood is the most major advantage offered by these doors.
Doors made of fibreglass can be coloured to make them look like they are made of wood species like oak or mahogany. Additionally, entry door systems made of fibreglass are designed to be very efficient in terms of energy consumption.
Fiberglass doors with a textured surface can be made to look like doors made of any sort of wood. These doors have the look and feel of traditional wood doors, but they have the durability and reliability that can only come from high-quality fibreglass.
The performance of fibreglass doors will be improved, as will their level of security, if multi-point hardware is used. In environments that are cold and damp, the hardware will protect against warping and the formation of rust.
In comparison to doors made of wood, these are far more secure. If someone were to try to kick the door or smash through the panel with a sharp object, for instance, the surface would not be damaged in either scenario.
Fiberglass might be a better choice than other materials when it comes to conserving energy. These front doors are responsive to changes in humidity and temperature, and as an added bonus, they keep condensation from forming.
When choosing an entry door, a steel door is an excellent option to go with if you place a high priority on both its longevity and its level of safety. When compared to doors made of wood and fibreglass, this door has the highest level of strength. It is difficult to warp or dent a steel door, but any mark or damage that does appear on the door can be quickly fixed.
When compared to doors made of wood or fibreglass, the cost of a steel door is far lower. On the other hand, a steel door system that includes additional hardware and sidelights can cost the same as a door made of wood. Wood is typically utilised for the door's interior frame, even though steel can be used to make the door far more robust.
Doors made of premium steel have a steel frame and an outer layer that is 24 inches thick. In the past, traditional steel doors had an appearance that was more grey and industrial. This has evolved over the course of recent history. Doors made of standard steel have a smooth surface and an appearance that is similar to that of genuine wood.
The polyurethane finish that is applied to the majority of steel doors eventually fades off and can require occasional repainting. Doors made of premium steel typically have a vinyl coating that is designed to withstand severe weather, such as intense heat and precipitation. You might want to go with steel exterior doors instead of doors made of fibreglass because they are far more cost-effective in comparison to their counterparts.
They provide tremendous benefit over the long run. The overall price, on the other hand, may fluctuate quite a little based on the type of door and the options that are selected. The energy efficiency ratings of the steel entry doors will differ from one another depending on the overall construction and components that are incorporated.
What Are The Differences Between Steel & Fiberglass Doors?
Topping the Grade in Aesthetics
To begin, there is the glaring contrast between steel and fibreglass front doors. When it comes to the interior, fibreglass and steel are essentially interchangeable. It's common for both to have a foam centre and a wooden inner frame. Instead, it could be the outer layer of the door that most clearly differentiates between the two. It stands to reason that a steel door's exterior would be steel, while a fibreglass door's exterior would be fibreglass.
Don't be deceived by the innocent sounding nature of their names, though. Steel or fibreglass doors, for example, can be finished to resemble wood doors. Steel doors can give the impression that they are made of wood by having a faux wood grain cut into them and then being stained with a gel-based stain. Steel door frames retain paint well.
Fibreglass front doors can be camouflaged to look like wooden doors. Technological advances in recent years have allowed fibreglass to be given the appearance of wood grain. Fibreglass entry doors can be stained to match the wood trims, making them look like real wood doors but with the added durability of fibreglass.
Fibreglass is a great material to consider if you want a trendy door that looks like wood but requires less upkeep. There are a number of different wood grains that can be replicated in fibreglass, and some of the most popular ones are cherry, oak, and mahogany. Fiberglass is typically sold pre-painted or stained so that customers can give their purchases a one-of-a-kind, custom look.
These days, steel doors are available in a wide variety of designs, so you have a lot of appealing options to pick from. Doors made of high-end steel can have the appearance of being made of wood if they have decorative panels and other elements added to them. You might perhaps go for a sleek and contemporary look instead. After that, you can paint them to match the atmosphere and design of your entryway.
Fiberglass has a wider variety of design alternatives to pick from, and it is superior to steel in its ability to imitate the appearance of wood. Steel, however, is available in a variety of styles, some of which have a beautiful appearance.
A thinner outer layer makes steel more vulnerable to dings and scratches than fibreglass. However, because it does not seep through the door's interior, it is a very sturdy option. Steel doors can be dented with a kick but will not give way if kicked in. Fibreglass is susceptible to dents and dings just like any other material. But since it is made of a lightweight material, it is much easier to break through or bend in.
In the event of a severe enough impact, the fibreglass could break. However, steel will not flex under these pressures. However, fibreglass does not rust over time, making it a good choice for a long-lasting front door.
The thickness of a steel door is directly proportional to its gauge, so it's important to keep that in mind when shopping. Most front doors are made of 22-gauge steel, which is the standard thickness for such doors. These entryways are the most economical choice because they offer the highest levels of durability, security, and insulation.
However, dents are more likely to appear in these materials and are difficult to repair without professional help. Fiberglass doors, on the other hand, are superior to steel doors in terms of durability because they do not break, dent, rust and warp under normal conditions and only warp under extreme weather conditions.
Although fibreglass doors can be made to look like wood, they actually provide up to five times as much insulation. The longevity of fibreglass doors is unrivalled. Fiberglass doors are more low-maintenance than steel ones because they don't need any kind of finish. Because of this, fibreglass doors are preferable to steel doors. Due to their durability and resistance to rust, mould, and other forms of deterioration, unfinished fibreglass doors are the low-maintenance choice.
Doors made of fibreglass are a popular choice because of their longevity. Fiberglass, in contrast to wood, does not warp and is not susceptible to damage from weather, moisture, or humidity. In addition to that, it is rustproof. However, fibreglass can be dented or fractured if it is impacted with sufficient force.
In general, steel is a strong and reliable material for door construction. In addition, steel has a long lifespan and maintains its useful properties for many years. Even while steel doors do not warp like wood doors do, the surface of steel doors can become scratched, dented, or corroded if they are not properly maintained.
When compared to wood, the resistance of steel and fibreglass to wear and strain is significantly higher. Steel, on the other hand, may have a somewhat longer lifespan than fibreglass provided that it is maintained properly.
Ease Of Maintenance
Front doors made of fibreglass are simple to maintain and clean. To begin, remove any debris from the surface using a clean, damp cloth and a gentle rubbing motion wherever necessary. Using a soft spray from a hose or a pressure washer set to its lowest level, thoroughly rinse the area (because higher settings can dent the fibreglass).
Doors made of steel often have a flat, smooth surface that is very simple to clean with a damp cloth. Because the steel surface may rust, you should not rinse it with a hose. It is recommended that the door be repainted if it has any scratches in order to prevent rusting.
Entry doors made of fibreglass and steel are both alternatives that require little to no maintenance. However, in order to avoid rusting, any scratches that may appear on steel must be repaired as soon as possible.
Both fibreglass and steel doors are more energy-efficient than hardwood doors. Because they have a longer lifespan and are better able to withstand the elements, doors made of fibreglass are more energy-efficient than doors made of steel. They respond to the varying temperatures outside by expanding and contracting, but they do so without allowing the indoor climate to be compromised. Doors made of steel are more energy-efficient than doors made of wood, but they do not offer the same benefits in terms of saving energy as doors made of fibreglass.
Fiberglass is unrivalled in terms of its ability to conserve energy. Because it has such a lengthy lifespan, it outperforms other materials like wood and steel in terms of durability. It is also quite effective at stopping air from fleeing the building, which can have a negative impact on your power bills.
Steel is more energy-efficient than wood in almost every application. However, this has the bad side effect of preventing air from escaping, which drives up the cost of your utilities. However, it does not provide the same level of durability as fibreglass. Steel, on the other hand, is susceptible to overheating when subjected to direct sunlight and high temperatures, which makes it marginally less effective than fibreglass.
Fiberglass surpasses steel in this regard, which is one of the reasons why homeowners choose to replace their doors with fibreglass rather than steel. Steel is another alternative that can be considered for door replacement.
When it comes to safety, fibreglass is a material that is lightweight but effective. Unfortunately, as a result of this, it is somewhat more prone to being damaged and twisted.
Entry doors made of steel are the best option for residential security. Their tough, authoritative demeanour allows them to thrive in almost any environment. A thief is not going to be able to break down a steel door with their feet alone.
Because it is more resistant to harm than both fibreglass and wood, steel is the obvious choice when it comes to matters of safety.
Although fibreglass doors are often more expensive than steel doors, the additional expense may be justified depending on the appearance and level of quality that you are striving for.
Be aware, though, that low-quality fibreglass is more likely to shatter, particularly when exposed to freezing temperatures. Because of this, the finish could become damaged, and the inside could lose its integrity. Therefore, if you are not yet prepared to make the financial commitment for a high-quality fibreglass door, a steel door that is more affordable and has a quality that is comparable to the fibreglass door can be the best alternative for you.
The quality of your newly installed entry doors will be determined, in the end, by the quality of both the installation and the finished result. Aside from that, high-quality models of entry doors made of steel and doors made of fibreglass compete extremely well with one another when placed correctly.
Doors made of fibreglass are often more expensive than doors made of steel, but they are typically less expensive than doors made of high-end wood. However, many homeowners favour fibreglass since it requires less maintenance than wood or steel and lasts longer than any of those materials. In addition, homeowners can expect a return on investment of approximately 75% when using fibreglass.
Steel doors are difficult to beat when it comes to cost savings. Steel doors are often the most cost-effective option when compared to other door materials such as wood and fibreglass. A simple steel door may be purchased at a low cost. In addition, steel offers a return on investment of approximately 90% for homeowners.
Steel is a more cost-effective option for a replacement door when compared to fibreglass and wood, and it also has a greater rate of return on investment. However, if the variety of styles available is a priority, you should consider fibreglass rather than wood because it is more cost-effective.
Entry doors made of steel offer superior protection to those made of fibreglass due to the thickness and increased protectiveness of the steel. Because of the secure footing they offer within the structure of the home, entry is more difficult to achieve. On the other hand, since it is simpler to handle, fibreglass is a choice that offers a lower level of safety.
Since a door is both the entrance to and the barrier between your home and the outside world, we strongly advise having it installed by a trained professional. The task has to be carried out effectively. The installation of a fibreglass door begins with taking measurements of the door frame, followed by the addition of two hinges, and finally the fitting of the door into the frame.
Other particulars, such as putting additional shims to the sides of the doorway, are tasks that must be carried out by a trained professional. Because they come pre-hung, fibreglass doors are much simpler to put in than wooden ones. To make them fit snugly against the frame, you need to do nothing more than attach them to the hinges 2 in the doorway.
In order to properly instal a steel door, the door must first be custom-cut to match the dimensions of the opening in the wall. Anchors and wall frames are necessities for the new steel door installation in order to get the optimal fit for the particular doorway in question. Around the perimeter of the room, drywall three is required on occasion.
Both types of doors require a relatively low amount of maintenance. However, there is a possibility that some minor activities will need to be completed. To the satisfaction of the homeowner, fibreglass doors can be cleaned off, painted, and repainted multiple times. In addition, in order to maintain their cleanliness, they can be oiled and washed using a pressure washer.
On the other hand, it is vital to use the washer on the lower level because using it on higher settings can cause dents. Because frequent hosing down might cause steel doors to corrode, this should be avoided. It is imperative that they are properly greased and kept in excellent condition at all times. On the other hand, they do not require routine cleaning.
Doors made of steel allow heat to go from the outside to the inside of the building. Therefore, the door will heat up when the scorching sun beams on it. Doors made of fibreglass do not retain heat, thus even when exposed to the sun's rays for extended periods of time, they do not become overly warm. Steel does not perform nearly as well as fibreglass when it comes to withstanding extreme temperature variations. As a direct consequence of this, it is unable to respond to changes in temperature by either expanding or contracting.
Instead, it takes it in and digests it. The result of this is that the door will either be hot or chilly. This causes the door's structural integrity to deteriorate with time, making fibreglass a superior choice because it has a longer lifespan.
How To Decide Between Steel And Fiberglass Doors:
Advantages Of Steel Doors
- Surface that is hard, smooth, and is simple to clean.
- Choices of colours that can be painted easily
- Will not warp like wood
- Not harmed by extremely high or low temperatures
Disadvantages Of Steel Doors
- Painting is required.
- Damage caused by hard hits
- Easily rusted in environments with a high concentration of salt or moisture
- Most residential steel doors feature wood edges
Advantages Of Fiberglass Doors
- Options including a smooth finish or a wood-grain texture
- It looks like natural wood
- Impact dent resistance
- a lower rate of cold thermal conduction
- It is also capable of being painted or stained.
Disadvantages Of Fiberglass Doors
- The price is raised
- Can fracture under the force of a blow.
- If you plan on doing the finishing work yourself, you should have some experience with staining.
- A clear coat is required for stained doors.
Both of these categories of doors come with a selection of different jamb (outside frame) options. Wood, plastic, or even a type of fibreglass may be used in the construction of jambs.
There are even cases where people have mixtures of the two. For instance, the lower area of wood jambs, which is where they connect to the sill, is susceptible to rotting. This area has a propensity for accumulating the majority of the moisture that runs down the door. Choose the door jambs for your doors based on your preferences and requirements.
A door that is located beneath a porch, for instance, would be shielded from the weather. Therefore, a wooden frame would have a lower risk of rotting throughout the years and would require less upkeep overall during that time.
Make an informed decision, given that the door itself might survive the test of time. On the other hand, if the frame gives out early, you can find yourself looking into replacement possibilities much sooner than you had planned.
For the exterior of a steel door, the covering will also be made of steel. Unlike wooden or metal doors, fibreglass ones won't crack, rust, warp, or break. Most of the time, the price of a fibreglass door will be higher than that of a steel door. The doors that lead inside your home are a major design element that guests will first notice. It can be challenging to find the perfect door, given the wide variety of options available today.
The article will explain the primary distinctions between steel and fibreglass entrances. Steel doors are much more affordable than their wooden and fibreglass counterparts. Steel doors with extra hardware and sidelights can be as expensive as wooden doors. The final cost can vary widely depending on the door style and customization options you choose. When it comes to convincingly mimicking wood, fibreglass outperforms steel.
Fiberglass front doors can be stained to look just like wood if the trims are stained the same colour. In order to give customers more creative freedom, fibreglass is frequently sold in a primed, painted, or stained state. Fibreglass doors are commonly used because of their durability. Because they don't require a finish, fibreglass doors require less maintenance than steel ones. Without regular upkeep, steel entry doors can be damaged by scratches, dents, and corrosion.
Doors made of steel or fibreglass save significantly more energy than those made of wood. When it comes to energy efficiency, fibreglass has no equal. However, when exposed to strong sunlight and high temperatures, steel can easily overheat and become dangerously hot. Most of the time, fibreglass doors are more expensive than steel doors but cheaper than high-end wood doors. Fiberglass is prefered by many homeowners due to its durability, low upkeep, and long lifespan.
The look and function of your new entry doors will depend on how well they are installed. Putting in a steel door requires the door to be cut to size to fit the opening in the wall. Additional shims on either side of the doorway are a detail that requires a professional's touch. There is a wide variety of jamb (outer frame) styles available for wooden and fibreglass doors. Jambs could be made of wood, plastic, or even fibreglass. Select door jambs that meet your needs and taste.
- Questions about which door material is superior and what sets steel and fibreglass doors apart arise frequently.
- Therefore, the exterior skin of the door is the most important distinction.
- Use of steel also helps people feel safer.
- Most of the time, you can order a door that has already been stained in the colour of your choice.
- Most of the time, a fibreglass door will cost more than a steel door.
- Front doors are a property's first impression, so it's important to have one that is both sturdy and attractive.
- Which is why it's so important to pick a front door that complements the style of your house.
- Think of the doors as a crucial part of your property's kerb appeal when designing the exterior.
- Choosing a material for your new entry doors could be challenging due to the wide variety of possibilities available.
- In this article, we'll compare steel doors to fibreglass doors, outlining the key differences between the two so you can make an informed choice about which material is best for your home.
- In addition, fibreglass entry door systems are built to be exceptionally energy-efficient.
- Doors made of fibreglass can be made to look like any type of wood by adding a texture to the surface.
- Reinforced Steel Entryways If durability and security are at the top of your list when selecting a front door, then a steel door is a great choice.
- The strength of this door is unparalleled by that of wooden or fibreglass alternatives.
- Steel doors are much more affordable than wooden or fibreglass alternatives.
- A steel door system, with all the trimmings (locks, handles, and sidelights), can be as expensive as a wooden door.
- The door's interior frame is typically made of wood, but steel can be used for added durability.
- Doors constructed from premium steel feature a steel core and a 24 inch thick outer layer.
- Steel exterior doors are much more cost-effective than fibreglass doors, so you may want to consider those instead.
- Depending on the overall construction and components used, the steel entry doors' energy efficiency ratings will vary.
- Fiberglass and steel are functionally equivalent inside.
- It makes sense that the outside of a steel door would be steel and the outside of a fibreglass door would be fibreglass.
- You can get doors made of steel or fibreglass that look like wood if you paint them properly.
- Fiberglass can now be made to look like wood thanks to recent technological advancements.
- Staining fibreglass entry doors to match the wood trims makes them look like real wood doors but with the durability of fibreglass.
- Fibreglass If you want a modern door that looks like wood but requires less maintenance, fibreglass is a great option to consider.
- After that you can give them a coat of paint to make them complement your foyer's style.
- Verdict Fiberglass outperforms steel in its ability to simulate wood's grain and coloration, and it also offers more design options.
- The Nature of Longevity Steel is more prone to dents and scratches than fibreglass because its outer layer is thinner.
- But because it doesn't leak through the door's interior, it's a very solid choice.
- On the other hand, fibreglass doors won't rust over time, making them a good option for those who want a long-lasting entryway.
- When looking for a steel door, it's important to keep in mind that the thickness is proportional to the gauge.
- While steel doors can easily be broken, dented, rusted, and warped, fibreglass doors only warp under the most extreme weather conditions, making them the more durable option.
- Fibreglass doors have an unmatched lifespan.
- Because they don't require a finish, fibreglass doors require less maintenance than steel ones.
- Fibreglass doors are better than steel doors for this reason.
- Unfinished fibreglass doors are the low-maintenance option because they are long-lasting and resist rust, mould, and other forms of deterioration.
- Fibreglass Fibreglass doors are commonly used because of their durability.
- Steel Steel is a common choice because it is durable and sturdy, making it an ideal material for doors.
- Steel doors don't warp like wooden ones do, but they can still get dinged up and corroded if they aren't cared for.
- Verdict Steel and fibreglass have much greater resistance to wear and strain than wood does.
- Low Effort Required For Maintenance Fibreglass Fiberglass entry doors are low-maintenance and easy to clean.
- Steel, however, needs to have any scratches fixed immediately in order to prevent the metal from rusting.
- Use of Energy Effectively Doors made of steel or fibreglass save significantly more energy than those made of wood.
- Doors made of fibreglass are more energy-efficient than doors made of steel because they last longer and are better able to withstand the elements.
- Steel doors are more energy-efficient than wooden doors, but they still aren't as efficient as fibreglass doors.
- Fibreglass When it comes to preventing heat loss, fibreglass has no equals.
- Due to its superior longevity, it easily outperforms common construction materials like wood and steel.
- Steel When compared to wood, steel is a more energy-efficient material.
- Verdict This is one of the many reasons why homeowners prefer to replace their steel doors with fibreglass ones.
- A door made of steel is another option available for replacement.
- Safety Fibreglass Fiberglass is a strong but lightweight material that can be used for safety purposes.
- Steel If you're concerned about the safety of your home, steel entry doors are your best bet.
- As a result, a steel door that is less expensive and of comparable quality to a fibreglass door can be the best alternative if you are not yet ready to make the financial commitment for a high-quality fibreglass door.
- In the end, the quality of the installation and the final product will determine the quality of your new entry doors.
- Aside from that, when placed appropriately, high-quality models of steel entry doors and doors made of fibreglass compete extremely well with one another.
- Steel Regarding savings, steel doors are hard to beat.
- A plain steel door can be had for very little money.
- Conclusion: Steel replacement doors are more cost-effective than fibreglass or wood doors, and they also offer a higher rate of return on investment.
- Installation Due to the importance of a door as both an entrance and a barrier to the outside world, we recommend having a professional handle the installation.
- Additional shims on either side of the doorway are a detail that calls for the assistance of a trained professional.
- Fiberglass doors are much less complicated to instal than wooden ones because they are pre-hung.
- A steel door must be specially cut to fit the opening in the wall before it can be installed.
- The installation of a new steel door requires the use of anchors and wall frames to ensure a proper fit.
- Maintenance Both varieties of entrances can be kept in good condition with minimal effort.
- Fiberglass doors can be scuffed up, painted, and repainted as many times as the homeowner likes without losing their lustre.
- Additionally, they can be oiled and washed with a pressure washer to keep them clean.
- However, they don't need to be cleaned frequently.
- Heat Steel door frames allow for radiant heat transfer from the exterior to the interior.
- So, when the hot sun shines on the door, it will get very hot.
- Because of this, the door's temperature will either rise or fall.
- Injury from violent blows Highly susceptible to rusting in damp or salty conditions. The edges of residential steel doors are typically made of wood. Fiberglass Doors Have Many Benefits There are a variety of finishes available, such as smooth or wood grain. It mimics the look of real wood very well. Tolerant of Shock and Dents a slowing of the rate at which cold thermal conduction occurs Furthermore, it can be stained or painted to your liking.
- Problems with Fiberglass Entrances The price goes up Easily breaks if hit hard enough.
- You need to have some staining experience if you intend to do the finishing work yourself.
- Staining doors is acceptable, but they must be sealed with a clear coat.
- Each type of door has a range of jamb (outer frame) possibilities.
- Jambs could be made of wood, plastic, or even fibreglass.
- For instance, the bottom of wooden jambs is prone to rot because it is the point of contact between the jamb and the sill.
- The majority of the water that drips off the door tends to pool here.
- Select door jambs that meet your needs and taste.
- For example, a door that is covered by a porch would be protected from rain and snow.
- The door's durability should factor into your decision.
Frequently Asked Questions About Steel Door And Fiberglass Door
Fibreglass doors are superior insulators suited for many climates — hot or cold, wet or dry. Unlike steel doors in wet climates, they are not susceptible to rust. Unlike steel, fibreglass does not transfer heat, which makes it a better choice for areas with greater seasonal fluctuations in temperature.
Fibreglass doors are typically more expensive than steel but less expensive than high-end wood doors. But since fibreglass lasts longer and is easier to maintain than wood and steel, many homeowners prefer it. Fibreglass gives homeowners around 75% return on investment.
Fibreglass doors and sidelights can be smooth or textured with a wood-grain finish. This material usually does not need to be primed, but painting is required. Premium steel doors are factory-primed and should be painted but not stained.
When properly installed and maintained, steel doors often last 30 years or longer. When repairs are necessary, they typically occur in the field at a relatively low cost.
Fibreglass doors work well in almost any climate, even in extremely cold and damp conditions. Unlike wood, fibreglass doors do not warp, crack, or rot. And unlike steel, the doors don't rust, scratch, or corrode. Fibreglass is built to last and will not require yearly re-finishing to stay in top shape.