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More about the 35mm Fire Doors Collection

Fire doors play a critical role in slowing down the spread of fire and smoke within a building, providing occupants with valuable time to evacuate safely. 35mm internal fire doors are specifically designed to withstand high temperatures and prevent the rapid spread of flames between rooms, ensuring optimal protection for your home and loved ones. We have a fantastic range of 35mm internal fire doors in stock from trusted brand like Jeld-Wen and LPD Doors.

Key Features of 35mm Internal Fire Doors

When it comes to fire doors, the thickness of the door is a crucial factor in determining its fire-resistance rating. All our 35mm doors are FD30 rated, which means they can prevent the spread of fire for 30 minutes, which is a key feature.

Our fire doors offer a range of features such as:

Choosing the Right Fire Door for Your Home

With a plethora of options available in the market, it can be challenging to select the perfect fire door for your home. Here at Vivid, we have fire doors in various finishes and designs, from contemporary doors to those with a more traditional appearance like the White Bostonian 6P 35mm Fire Door from Jeld-Wen, all manufactured to the highest quality. Internal fire doors are manufactured using various types of wood to cater to different design preferences and budgets.


Oak is a popular choice for its durability, strength, and attractive grain patterns. It provides a timeless and elegant appearance that suits both traditional and contemporary settings. Oak fire doors can be finished with stains, varnishes, or paints to enhance their natural beauty. One of the finest oak fire doors we stock is the Oregon Cottage by Jeld-Wen, with it's striking 5 panel appearance.

View Oak Fire Doors


Pine is an affordable and versatile softwood option that can be easily stained or painted to achieve the desired look. Pine fire doors are lightweight and relatively easy to work with, but they may not be as durable or long-lasting as hardwood options.

View Pine Fire Doors


Walnut is a premium hardwood known for its rich, dark color and striking grain patterns. Walnut fire doors offer a luxurious, high-end appearance and excellent durability, making them a popular choice for upscale homes and commercial property.

View Walnut Fire Doors

Engineered Wood

Engineered wood doors are made by combining layers of solid wood or wood veneers with high-density cores to create a solid construction. This construction method offers increased stability, resistance to warping, and cost-effectiveness while still providing the appearance of solid wood.

Frames & Accessories For Internal Fire Doors

When installing 35mm fire doors, it is crucial to use appropriate frames and accessories to maintain the door's fire-resistant integrity and ensure compliance with fire safety regulations. Here are some essential components to consider for your 35mm fire door installation:

Door Frames

A fire-rated door frame, often made from hardwood or steel, is designed to withstand high temperatures and complement the fire door's performance. The frame should have a fire resistance rating that matches or exceeds that of the door itself.

Intumescent Strips

Intumescent strips are essential for sealing the gaps between the door and the frame in the event of a fire. These strips expand when exposed to heat, closing any gaps and preventing the spread of fire and smoke. It is important to use the correct size and type of intumescent strip specified for your 35mm fire door.


Standard hinges may not withstand high temperatures during a fire, compromising the door's fire resistance. Use fire-rated hinges, typically made from steel or brass, that have been tested to perform under high temperatures and meet the required fire safety standards.


Door hardware, such as handles, locks, and closers, should also be fire-rated to ensure their functionality during a fire. Using non-fire-rated hardware can weaken the overall fire resistance of the door assembly.


If your 35mm fire door features any glass panels, ensure the glazing is fire-rated and compatible with the door's resistance rating. Fire-rated glazing is designed to resist heat at high temperatures.

Maintaining 35mm Internal Fire Doors

All fire doors require regular maintenance to ensure their long-term performance, functionality and compliance with fire regulations. Once installed, proper maintenance helps to identify and address potential issues before they become serious problems.

It is important to routinely inspect the surface of the fire door, its edges and frame for signs of damage, warping, or wear - as this is a key factor in the door being able to withstand fire. Check for gaps between the door and the frame, which should not exceed the recommended tolerances. Make sure the fire door closes securely and forms a tight seal with the frame.

Examine all door hardware, such as hinges, handles, locks and closers, for signs of wear or damage. Ensure that hinges are securely fastened and lubricated and that locks and handles operate smoothly.

Inspect the intumescent strips and smoke seals for damage or wear. Replace any damaged or worn-out seals to maintain the door's fire and smoke resistance.

Test the door's operation by opening and closing it to ensure it moves smoothly without binding or scraping. If the fire door has a self-closing mechanism, verify that it closes securely and without obstruction.

If the door features glazing, inspect the glass panels for cracks or other damage. Ensure that the glazing beads and seals are in good condition and securely fitted.

Address any identified issues with your fire door promptly, using compatible replacement parts and following the manufacturer's guidelines. If you're unsure about the necessary repairs or adjustments, consult a professional carpenter or door installer.

35mm Internal Fire Doors For Use In Commercial Buildings

Using 35mm fire rated doors in non-residential buildings, like offices, depends on the specific building regulations, safety requirements and the intended application of the doors within the premises. In many cases, commercial buildings have stricter safety regulations than residential properties, which may require fire doors with a 44mm or even 54mm (FD60 Rated) thickness. This increase in mm to 44 or 54mm offers greater fire resistance (typically 60 minutes or more) compared to the 35mm internal fire doors, which usually have a 30-minute (FD30 fire-resistance) rating.

However, there may be situations in which 35mm fire rated doors can be used, such as in non-critical areas or where local regulations permit their use. To determine if 35mm doors are appropriate for a building, consult the building's fire safety plan, local building codes and professionals to ensure accordance with all regulations.

Why buy your 35mm fire door from Vivid Doors?

You’ll only find well known, reputable and respected companies like Jeld-Wen (a brand that has been around for over sixty years) when shopping for 35mm fire rated doors with us.

Additionally, all of our fire rated manufactured doors come with a 10-year manufacturing guarantee, so in the unlikely event that you experience a problem with your purchase, just get in touch for quibble-free help and advice.

Our collection of 35mm internal fire doors considers a range of budgets, so you’re sure to find something that suits your interior design at a price point you’re comfortable with. Our wide selection comes with a price match promise so you don’t have to spend hours shopping around to find the best price, you’ve already found it with us.

If you have a question about any of our 35mm fire-rated doors, please contact a member of our team will be happy to help you find your perfect door. All our prices include VAT.

Questions about 35mm Fire Doors

What is an internal fire door for?

Fire doors are often seen in commercial or public buildings, but they are also available for domestic properties. When closed, they are designed to keep both fire and smoke at bay for a limited amount of time to help you and your loved ones get to safety.

These doors are available in a range of thicknesses. All of the fire doors you’ll find in this category have a 35mm thickness.

Which doors in a house should be fire doors?

It’s recommended that you create an escape route from your home if a fire breaks out, and then install fire doors along that route. We would also recommend considering installing a fire door in your kitchen, or anywhere you will have a naked flame.

What is an FD30 Door?

FD ratings refer to the effectiveness of the door in regard to fire resistance. The higher the number, the longer the door will stop the spread of fire throughout your home.

An FD30 fire door, which is the rating you’ll find for every style of fire door this collection, means that it is fire resistant for up to 30 minutes as a minimum, giving you essential time to get out of your building safely. When it comes to fire safety and protection, 30 minutes can make all the difference.

The Internal Fire Doors Information Centre

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