Oak Fire Doors

Discover a durable collection of internal oak fire doors that blend modern style with essential fire protection. Every oak veneer design prioritises high-end quality and reliable performance, bringing both safety and style to your home.

Choose oak fire doors from the UK’s widest internal door selection and protect your property today. Order the perfect door online and enjoy nationwide delivery.

Our Range of Oak Fire Doors

At Direct Doors, we’ve earned our award-winning reputation by ensuring the highest quality and safety standards, backed by an expansive stock of certified fire doors.

Our collection meets strict UK building regulations, with our FD30 fire doors providing 30 minutes of fire resistance. We also offer FD60 oak-veneer fire door options for properties requiring 1-hour of robust fire protection.

Arriving at a sturdy 45 mm thick, these oak-veneered internal fire doors are available in two distinct core constructions to meet your specific needs:

• Solid core fire doors: Provide a dense, heavy feel, superior sound reduction and the durability to withstand years of high-traffic use.

• Semi-solid core fire doors: Offer reliable, lighter-weight construction that provides a cost-effective system for securing multiple rooms without sacrificing safety.

Note: While these sturdy builds withstand heat effectively, please remember they are designed for interior use and are not external-grade.

Here’s what to expect from our oak internal fire door collection.

Single & Double Door Styles

Whether securing a standard entryway or creating a transition between rooms, our oak internal fire door systems bring certified safety to your home. Although we show pairs to help you visualise a full door set, we stock these internal doors as individual units to match your specific needs:

• Single oak fire doors: The ideal pick for bedroom or home office doorways, combining a slim profile with heavy-duty protection.

• Oak veneer double doors: Great for fully opening up a floor plan while maintaining essential fire-rated security.

Finish your installation with stylish hardware, allowing the natural oak grain to stand out while ensuring your door remains fully functional and secure.

Note: We only supply doors and do not offer installation. For safety, double doors must be installed with the correct frames, hinges and smoke seals. They’re not rebated where they meet in the middle and cannot be altered to do so.

Standard & Bespoke Sizes

We stock an extensive range of individual door leaf sizes to suit any architectural space, helping you find the perfect dimensions for your living space.

• 2040 mm x 726 mm doors are a common metric size, ideal for contemporary homes and apartment refurbishments.

• 2040 mm x 826 mm sizes offer a wider opening for improved accessibility and a spacious feel.

The standard size options available cover the most frequent UK frame dimensions:

• Small (1981 x 686 mm to 1981 x 1066 mm): Great for narrower pantry doors or compact utility spaces.

• Medium (1981 x 711 mm to 2040 x 1252 mm): The go-to choice for standard bedroom and living room entryways.

• Large (2040 x 926 mm to 2040 x 1452 mm): These grande systems are best suited for expansive room transitions and filling larger openings where a standard door would fall short. 

Note: All listed sizes are overall tight dimensions; they do not include clearance gaps for fitting.

Our custom sizes provide made-to-measure solutions where a standard fit won't work. We use our bespoke expertise to build a fire door specifically for your space. Whatever you want, we can do it! 

Contact us with your custom request, and our oak fire door suppliers will engineer the ideal solution tailored to your specific size requirements.

Types of Oak Fire Doors

Choose the perfect internal fire door design that complements your room’s look and feel while maintaining essential fire protection:

• Flush fire doors: Highlights the oak’s natural grain, offering a modern, minimalist look that pairs perfectly with tiled floors.

• Panelled fire doors: Offer a classic look with defined detailing, combining traditional craftsmanship with heavy-duty safety performance.

• Glazed oak fire doors: Expertly designed to brighten enclosed spaces while the thick oak build aids heat retention and blocks noise.

Glazing Options

Invite natural light into darker hallways without compromising essential fire safety with the glass options available to complete your home’s look:

• Clear: Maximises visibility and brightness between living spaces, creating an open-plan feel.

• Designer: Often featuring obscure glass patterns, adding a high-end decorative touch with unique textures that bring a personalised element to your interior.

Versatile Finishes

Achieve your desired look with the right oak veneer door finish, tailored to your project timeline and budget.

Here is a side-by-side breakdown of your options:

• Prefinished oak doors arrive fully finished and ready to hang, so that you can skip on-site sanding and staining.

• Unfinished oak fire doors are offered at affordable prices and give you the freedom to apply a custom stain or paint that matches your décor. A perfect choice for on-site decorating.

Whatever you choose, every door is built to look the same on both sides, ensuring a consistent, high-end appearance throughout your home.

Expert tip: If you are fitting a door in a bathroom or wet room, never use wax. Damp fingerprints will mark the finish permanently, usually resulting in a frustrating, endless task of repairing the wood’s surface.

Take a look at our top reviews to see why UK homeowners rely on us to supply durable fire doors to keep their family safe.

Fire-Rated Oak Door FAQs

Explore answers to frequently asked questions about our internal oak fire doors for sale.

What are the key features of fire-rated doors?

True fire protection comes down to how the entire unit is built to handle extreme heat. High-quality fire doors are engineered with a solid core that slows the spread of flames, buying you vital time to evacuate during an emergency.

For maximum safety, these doors work alongside intumescent strips. These hidden seals expand when things get hot, blocking off smoke and heat. This blend of heavy-duty materials and reactive sealing is what keeps your home and family secure when it matters most.

How do I choose between a 30-minute or 60-minute fire-rated oak door?  

Selecting the right level of fire protection depends entirely on the specific needs of your property and local building codes. 

We stock two distinct certified designs to ensure your home stays fully compliant with fire safety standards:

• FD30 fire doors provide 30 minutes of fire resistance, making them the standard, reliable choice for most internal partitions and bedroom entries.

• FD60 fire-rated oak doors are built to higher safety standards, offering a full hour of protection for critical areas such as boiler rooms and stairwells.

Are oak internal fire doors easy to install?

As we do not offer installations, we always recommend hiring a qualified installer. Because these are engineered to prevent flames from spreading, the fit must be exact to remain compliant.

Hanging this highest specification system is more technical than a standard build. If you are fitting hinges yourself, they must be fire-rated and positioned perfectly to carry the doors' 45 mm weight.

Here’s what to consider before starting:

• Trimming and fit: While our doors have a generous trim allowance, check the specific trimming ability. Cutting too deep can compromise the fire core or lead to manufacturing defects like delamination.

• The frame: Ensure the frame leaving the factory meets a fire rating. To achieve a clean break in style between rooms, your internal rebate must be deep enough to accommodate both the door and the intumescent seals.

• Floor clearances: Customers changing flooring finishes mid-project can check the hardware adjustment height so the door clears the floor while maintaining a tight seal.

• Meeting doors: For a meeting door (pairs), you need the correct whole internal rebate or a pairmaker. Unlike a top-hung track found in a Roomfold comparison table, fire pairs need a solid, overlapping fit to block smoke.

• Hardware: Beyond the hinge handle set, consider if you need drop bolts for extra stability or door stops to protect the oak face from wall damage.

While we only supply all types of doors for all types of UK homes, we're still happy to help you get started. Visit our showroom to discuss your project’s specific needs in person. We can also arrange a pre-ordered, collection-free pickup. Simply call us on 01968 671 681 to set up a custom draft order. This ensures your items are ready and the payment is processed online before you arrive.

How do I maintain oak internal fire doors?

Unlike external doors that have to battle the elements, internal oak fire doors are much simpler to care for.

To keep the natural oak looking its best while ensuring incredibly smooth operation:

1. Wipe the surface with a soft, dry cloth to remove dust.

2. Avoid harsh household chemicals or abrasive cleaners, as these can strip the door finish and dull the wood over time. 

3. Check the hinges and handles every few months to ensure the door still closes smoothly and securely.

Tip: For tough marks, use a slightly damp cloth (never soaked) and dry it immediately to prevent moisture from seeping into the grain.

Buy oak fire doors from a trusted UK supplier and protect your property at an affordable price. Order online today and enjoy VAT-inclusive pricing.

Please Note:

• Do not book tradesmen until your goods have arrived, been inspected for damage and confirmed as suitable for installation.

• Courier delays may occur due to illness, traffic or unforeseen product issues.

• Wood products feature natural variations in grain and appearance — this is part of their unique character and beauty.

• We cannot accept liability for any costs incurred from arranging installation before delivery and inspection.