Internal Fire Doors With Glass

Direct Doors supplies a wide selection of internal fire doors with glass for UK homeowners seeking improved fire safety without compromising modern style. Our extensive offering provides fire-rated protection, innovative design and improved natural light flow, instantly elevating your interior. 

Protect your living space in style with modern internal fire doors with glass. Shop our comprehensive collection and enjoy UK-wide delivery.

Our Range of Internal Glass Fire Doors

At Direct Doors, we offer all types of doors for all types of homes. With over 40 years of industry experience, we have earned an award-winning reputation for stocking the UK’s largest internal door selection. 

Discover the versatility of our fire-resistant glass doors, featuring bold, contemporary designs in a range of high-quality finishes. Our glass fire door suppliers ensure each unit undergoes rigorous testing to withstand high temperatures and resist flames, meeting all UK fire safety regulations. 

Here’s what to expect from our glass fire doors for sale.

Certified Safety

Our internal fire doors with glass panels combine sanctioned impact safety with heat resistance to protect occupants during daily use and emergencies.

Key safety features include:

1. Certified toughened glass: Fire-rated glass complies with BS EN 12150 and BS EN 12600 standards, offering up to five times the impact resistance of ordinary annealed glass.

2. Safe fragmentation: If forcefully impacted, the heat-treated glass crumbles into small, blunt-edged granular pieces rather than sharp, dangerous shards.

3. Fire-resistant materials: Built using specialist fire-resistant core construction and intumescent glazing gaskets that hold the glass firmly in place during high-heat exposure.

Durable Materials

Built to last and expertly designed, our internal fire doors feature high-quality timber veneers, offering both fire-rated performance and outstanding visual appeal.

• Oak fire doors: Perfect for adding classic charm with long-lasting strength, bringing natural warmth and distinct grain patterns to your living area.

• Walnut fire doors: The rich, deep tones and sleek finish bring refined contrast to lighter interiors, ideal for minimalist loft apartments, where texture and tone matter. 

Every stylish finish is crafted to offer dependable fire protection without sacrificing the natural beauty of real wood.

 Premium Finishes

Our internal glazed fire doors come in three distinct finishes, designed to suit your unique style and needs.

1. Pre-Finished: Our pre‑finished glass fire doors arrive factory-coated and ready to hang, with no on-site finishing required. However, if any trimming is required, you will need to redecorate the exposed edges.

2. Unfinished: The perfect choice for full creative control and a tailored finish. Choose an unfinished glazed fire door and apply your own paint colour, stain or varnish.

3. Primed: This finish provides a blank canvas, prepped for coloured fire door choices. Each unit comes with a smooth base coat, ready for you to paint in any shade that suits your interior decor.

Every stylish finish is crafted to offer dependable fire protection without sacrificing the natural beauty of real wood. For added convenience, select doors also feature a Paint N Peel facility that shields panels during painting.

Note: Any finishing applies only to the door. Frames and other components are supplied unfinished and must be finished to match.

Versatile Fire Door Sizes

We supply glazed fire doors in standard UK dimensions to fit existing timber frames across your interior. Explore our range with certified safety built into every size:

• 1981 mm x 457 mm - 1981 x 686 mm: Ideal for narrow structural openings, small utility spaces and tight storage cupboards.

• 1981 mm x 711 mm - 1981 x 864 mm: Fits standard interior doorways, providing everyday fire protection between main living areas.

• (981 mm x 914 mm - 2040 mm x 526 mm: Includes wider 914 mm doors for larger openings, alongside narrower options for more compact spaces.

• 2040 mm x 626 mm - 2040 mm x 926 mm: Taller options are available, with wider 926 mm doors suited to larger openings.

Fire-Rated Glass Door FAQs 

Find answers to common questions about interior fire doors here.

How do fire-rated glass internal doors prevent the spread of fire?

Fire-rated glazed doors slow fire spread by holding back flames and toxic smoke to protect escape routes and lower overall fire risk.

Key protection mechanisms include:

1. Compartmentalisation: Keeps intense heat and flames confined to the origin area, giving occupants vital time to evacuate safely.

2. Intumescent expansion: Heat causes perimeter seals to expand instantly, blocking the small gaps between the door leaf and frame where smoke leaks through.

3. Fire-rated materials: Specially engineered ceramic or toughened glass works alongside fire-resistant door components to hold firm against extreme heat.

If the door forms part of an escape route or divides fire compartments, smoke seals and auto-closers are typically required to meet fire safety standards.

Note: Intumescent seals are never included with the door itself and will most likely come with the fire-rated frames.

How do I know which fire doors I need?

Choosing the right fire rating depends on your property type and where the door sits within your building's escape routes. Glazed internal doors match standard solid fire doors, providing the exact same certified performance while letting light flow through.

• FD30 fire door: Delivers 30 minutes of fire protection, making it ideal for domestic settings, loft conversions and standard residential doorways.

• FD60 fire door: Offers 60 minutes of heavy-duty fire resistance and flame containment, required primarily in high-risk areas, shared corridors and commercial buildings.

What should I know about building regulations for fire doors? 

Fire door regulations are becoming stricter, especially for properties undergoing attic conversions or homes of multiple occupation (HMOs). It’s important that homeowners prioritise safety and ensure their fire doors meet these safety standards. 

This means:

• Installing fire doors that comply with the latest regulations, including fire-resistance requirements. 

• Using appropriate fire door accessories and ensuring proper fitting.

Note: As we don’t offer a dedicated installation service, we highly recommend checking your doors upon arrival for damage and suitability for fitting.

What is the return policy for fire doors with glass?

Standard fire-rated internal glass doors can be returned within 14 days of delivery, provided they remain unused, unaltered and in their original packaging. When you buy glass fire doors, standard terms and conditions apply regarding return carriage fees. Find full details on our Returns Policy page.

Note: Return coverage applies only to goods in original condition; any cutting, painting or fitting invalidates eligibility.

Do you offer fire-rated glazed doors in custom sizes? 

Yes, whatever you want, we can do it!

Beyond our standard internal doors, we offer a comprehensive collection of bespoke internal fire doors, the widest choice in the UK. Our made-to-measure glass fire-rated doors offer the quality, tailored design and flawless fit in unusual interior layouts.

Note: Since our bespoke fire-rated doors with glass are considered special orders, these products are non-refundable.

How do I maintain an internal glazed fire door?

Follow these key steps at least every six months to regularly maintain your interior fire door:

1. Inspect for damage: Check the door, frame, glass and seals for cracks, warping or wear.

2. Test closing and latching: Ensure the door closes fully and latches securely, with the self-closer working properly.

3. Check seals: Verify that smoke seals are intact and free from paint or damage.

4. Clean carefully: Use non-abrasive cleaners on glass and avoid harsh chemicals on seals.

5. Maintain hardware: Lubricate hinges and check screws.

6. Keep fire rating labels visible: Ensure certification marks remain legible and unaltered.

Order internal fire doors with glass from our premium selection and experience peace of mind at a VAT-inclusive price. Contact us today or visit our showroom in person for guidance on fire ratings and glazing options. 

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.