Ella Walter
A shower pan is the floor of a shower or bathtub that you stand on, while a shower base is the structure underneath the shower pan that guides water into the drain. Shower pans are typically made from acrylic, metal, stone, ceramic, or fibreglass, while shower bases are usually constructed from cement mortar. Some tubs may have a metal pan underneath the tub's drain, which could be used for fire stopping or to direct leaks away from the bathroom exhaust vent.
| Characteristics | Values |
|---|---|
| Purpose of a pan under the tub | Fireblock, keeping critters out, directing leaks away from the exhaust vent, or a requirement by plumbing code |
| Materials used for pans | Metal, galvanized steel |
| Materials used for shower bases | Cement mortar |
| Materials used for shower pans | Acrylic, metal, stone, ceramic, or fiberglass |
| Installation process | Remove the old pan, vacuum the subfloor, install the new pan, connect the drainpipe and strainer, install a cement backer board, and tile or add other material |
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What You'll Learn
Pans are used to direct leaks away from exhaust vents
It is possible for pans to be used to direct leaks away from exhaust vents. In one instance, a metal pan was found under the drain of an old steel tub. It was cut and folded around the pipe, and the exhaust vent was directly below the drain line. The metal pan was thought to be a makeshift pan to direct any leaks away from the exhaust vent.
In another instance, a user on Reddit was unsure of the purpose of the metal pan under the drain of their old tub. One response suggested that it could be used to direct leaks away from the exhaust vent.
While pans can be used to direct leaks away from exhaust vents, they can also serve other purposes. For example, pans are often used to catch water leaks from AC vents to prevent water damage. Additionally, pans can be used as a fireblock or fire stop, which is required by plumbing code.
It is important to note that pans under tubs or showers are not always necessary. When redoing a bathroom, some people choose to put material between the tub bottom and the subfloor, while others do not. The decision may depend on the specific situation and local plumbing codes.
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Metal pans are used as fireblocks
It is not uncommon to find a metal pan under the drain of an old tub. While it may seem odd, these metal pans serve a specific purpose and are an essential aspect of plumbing and fire safety. Metal pans are used as fireblocks, and their presence is often a requirement of plumbing codes. Fireblocks are required in various locations, including between floors, between the top story and the roof or attic space, and within wall assemblies.
Metal is an excellent material for fireblocking because it is non-combustible and can effectively prevent the spread of fire between floors or into wall cavities. In the event of a fire, these metal pans act as a barrier, containing the fire and preventing it from spreading to other parts of the house. This is especially crucial in houses with wood-framed doors, wood-trimmed openings, or stair railings, as these wooden elements can fuel the fire and accelerate its spread.
The metal pan under the tub's drain can also serve as a leak prevention measure. It can be designed to direct any leaks away from sensitive components, such as electric fan motors or exhaust vents. By doing so, the pan helps to minimise water damage and protects electrical components from potential moisture-related issues. This dual functionality of the metal pan ensures both fire safety and maintenance of the plumbing system.
In some cases, the metal pan might be a makeshift addition by previous owners. It is possible that the pan was added to prevent leaks or as a fire stop, especially if the tub is located on an upper floor. Over time, plumbing codes have evolved, and modern plumbing practices may differ from those employed in older homes. As such, it is not uncommon to discover unique or unconventional solutions implemented by previous generations during renovations or remodelling projects.
When renovating bathrooms, it is important to consider the function and purpose of these metal pans. While it may be tempting to remove them, especially when installing a shower instead of a tub, consulting with a professional plumber is advisable. They can assess the specific situation, ensure compliance with current plumbing codes, and suggest appropriate alternatives or modifications if necessary.
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Pans are used to keep critters out from under the tub
It is important to keep pests and critters away from your hot tub. The warm and dry environment of hot tubs makes them an ideal place for critters to camp out during the fall and winter. Critters such as rodents, frogs, toads, and insects like wasps, bees, and ants can be extremely destructive and can cause a lot of damage to equipment, wires, plumbing, and insulation. They can also create health hazards with their feces and contaminate water with their dead bodies.
One way to prevent critters from entering your hot tub is to use a pan under the tub. While some assume that the metal pan under the tub is used as a fireblock or to direct leaks, others suggest that it could be an old method of keeping critters out from under the tub. By placing a pan under the tub, you can catch any leaks and prevent water from accumulating on the floor, which may attract pests.
To further prevent pests and critters from entering your hot tub, it is important to seal any gaps and cracks that may provide entry points. Regularly inspect your hot tub cabinet for holes and cracks, and repair them with foam insulation or wood putty. Keep the area clean and free of food and drinks, as these can attract neighborhood animals and pests. Consider installing a gate around your hot tub to keep away larger animals and prevent pets from accessing the cover.
Additionally, using your hot tub regularly during the fall and winter months can help deter critters. Critters are less likely to inhabit areas with frequent human activity. Keeping the hot tub active and in use can help keep unwanted guests away.
By combining the use of a pan under the tub with regular maintenance, sealing gaps, and active hot tub usage, you can effectively deter critters and pests from making your hot tub their home.
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Shower pans are the actual shower floor that you step on
A shower pan is the floor of the shower that you stand on while bathing. It is a vital component of any shower, serving multiple functions. Firstly, it prevents water leakage by directing water towards the drain, protecting the bathroom floor and the home's structure from water damage. Secondly, shower pans offer enhanced safety with their stable, non-slip surface, reducing the risk of slips and falls. Finally, they add to the aesthetic appeal of the shower and the overall bathroom design.
Shower pans come in a variety of materials, each with its advantages and drawbacks. Acrylic shower pans, for instance, are lightweight, budget-friendly, and easy to clean, making them ideal for DIY installations. However, they may not be as long-lasting as other options. Fiberglass shower pans share similar benefits with acrylic, being lightweight and affordable, but they too may not offer the same durability.
On the other hand, ceramic shower pans are known for their elegance and durability but can be quite heavy. Stone resin shower pans are highly durable and aesthetically pleasing, contributing to the overall appeal of the bathroom. They are built to withstand the heavy wear and tear of high-use areas like bathrooms. However, stone resin pans can be more expensive than other options.
The size of a shower pan depends on the dimensions of the shower enclosure, available floor space, and personal preference. Square shower pans typically range from 32 to 48 inches per side, while rectangular pans can be as small as 32x48 inches and as large as 36x60 inches or even larger for custom showers.
Shower pans are generally easy to install, especially prefabricated options made from materials like fiberglass or acrylic. These often require only basic plumbing and tiling skills, saving on labour costs and time. However, some shower pans, particularly those made of ceramic or stone resin, may require professional installation due to their weight and the potential for costly water damage if installed improperly.
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Shower pans are made of acrylic, metal, stone, ceramic or fibreglass
Shower pans are available in a variety of materials, each with its own set of advantages and disadvantages. Acrylic, metal, stone, ceramic, and fibreglass are some of the most common materials used for shower pans.
Acrylic shower pans are made from large sheets of acrylic that have been heated and stretched onto a mould. They are typically reinforced with other materials for added strength. Acrylic shower pans are known for being reasonably durable, easy to maintain, and customisable. They come in a variety of colours and sizes and can also be ordered to fit non-standard spaces or match specific colours. Acrylic shower pans are moderately priced, with prices starting in the $300s and going up to $900 for systems with moulded shower seats. While acrylic is relatively durable, repairs can be costly due to the likelihood of weak spots in the material.
Metal shower pans are often used as a fireblock or fire stop, especially in multi-storey buildings. Metal pans are required by plumbing codes to cover penetrations and prevent the spread of fire. Metal shower pans are typically made of galvanised steel and can be used to direct any leaks away from exhaust vents or electric fan motors located below the shower.
Stone shower pans, such as moulded stone, can give a more luxurious appearance and can be matched with other parts of the shower and bathroom. Stone shower pans are more expensive than acrylic or fibreglass pans but offer a durable and long-lasting solution.
Ceramic or tile shower pans provide a high-end look and feel to the shower. Tile shower pans are more expensive than acrylic or fibreglass pans but offer a durable and customisable solution. However, tile shower pans may be more prone to cracking compared to one-piece acrylic pans.
Fibreglass shower pans are made with a polyester resin mixed with woven glass fibres that are poured into a mould. They are known to be a cheap alternative to other types of shower materials, and repairs are also inexpensive. However, fibreglass is more susceptible to damage, staining, and discolouration, which may require replacement sooner than other materials.
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Frequently asked questions
Yes, tubs have a pan under them. This is known as a shower pan or shower base.
A shower pan is the actual floor of your shower—the surface you stand on during a shower or bath. Shower pans are usually constructed from acrylic, metal, stone, ceramic, or fibreglass.
A shower base is the foundation of your bathtub or shower. It is the structure that is positioned right below the shower pan, guiding water into the drain. Shower bases are typically made of cement mortar.
There could be several reasons for this. Metal pans are sometimes used as a fireblock or to direct leaks away from the bathroom exhaust vent underneath it.
