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125MM (5 INCH) Chimney Flue Products - UK | National Flues

Discover the extensive selection of 125mm (5 inch) chimney flue products at National Flues. Our high-quality range includes adaptors, pipes, bends, tees, supports, firestops, flashings, terminals, and accessories to cater to all your flue system needs. Whether you are installing a new fireplace or upgrading an existing system, our 125mm products are designed to ensure efficient and safe ventilation for your home.
Discover the extensive selection of 125mm (5 inch) chimney flue products at National Flues. Our high-quality range includes adaptors, pipes, bends, tees, supports, firestops, flashings, terminals, and accessories to cater to all your flue system needs. Whether you are installing a new fireplace or upgrading an existing system, our 125mm products are designed to ensure efficient and safe ventilation for your home.


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Showing 20 of 72 items
TWPro - Wall Support 80-130mm - 125 Ø

TWPro - Wall Support 80-130mm - 125 Ø

22-125-055
£73.99 (including VAT)
In stock
TWPro - Wall Support 130-210mm - 125 Ø

TWPro - Wall Support 130-210mm - 125 Ø

22-125-056
£80.99 (including VAT)
In stock
TWPro - Wall Support 80-440mm - 125 Ø

TWPro - Wall Support 80-440mm - 125 Ø

22-125-057
£97.29 (including VAT)
In stock
TWPro - Wall Support Corner 270-520mm - 125 Ø

TWPro - Wall Support Corner 270-520mm - 125 Ø

22-125-058
£93.99 (including VAT)
In stock
TWPro - Roof Support - 127mm Ø

TWPro - Roof Support - 127mm Ø

22-125-067
£78.99 (including VAT)
In stock
TWPro - Wall Support 50-80mm - 125 Ø

TWPro - Wall Support 50-80mm - 125 Ø

22-125-053
£23.99 (including VAT)
Out of stock
MI-Flash - No 1.5 Tile Black EPDM (125-225mm) LD-705x501

MI-Flash - No 1.5 Tile Black EPDM (125-225mm) LD-705x501

12-15-LD-TILE
£79.99 (including VAT)
In stock
MI-Flash - No 1.5 Tile Grey SILICONE (125-225mm) LD-705x501

MI-Flash - No 1.5 Tile Grey SILICONE (125-225mm) LD-705x501

12-15-LD-TILEHT
£98.99 (including VAT)
In stock
MI-Flash - No 1.5 Tile Black EPDM (125-225mm) AL-705x501

MI-Flash - No 1.5 Tile Black EPDM (125-225mm) AL-705x501

12-15-TILE
£22.99 (including VAT)
In stock
MI-Flash - No 6 Metal Grey SILICONE 127-230mm 304x304

MI-Flash - No 6 Metal Grey SILICONE 127-230mm 304x304

12-6HT
£24.99 (including VAT)
In stock
MI-Flash - No 6 Metal Black EPDM 127-230mm 304x304

MI-Flash - No 6 Metal Black EPDM 127-230mm 304x304

12-6LT
£15.99 (including VAT)
In stock
Loft Mesh Kit (125mm)

Loft Mesh Kit (125mm)

13-MESHKIT-125
£107.99 (including VAT)
In stock
Wall Sleeve 45° Adjustable - Ø  125

Wall Sleeve 45° Adjustable - Ø 125

15-125-100
£29.99 (including VAT)
In stock
Roof Brace Kit - Ø  125

Roof Brace Kit - Ø 125

15-125-123
£58.99 (including VAT)
In stock
Loft Shield (Galv 1000mm) - Ø  125

Loft Shield (Galv 1000mm) - Ø 125

15-125-124
£118.99 (including VAT)
In stock
Chimney Notice Plate

Chimney Notice Plate

20-CNP
£1.93 (including VAT)
In stock
Sflue (3119136) - Wall Band Extension 50-100mm

Sflue (3119136) - Wall Band Extension 50-100mm

22-051
£22.99 (including VAT)
In stock
Sflue (31093ST) - Short Ext. Bracket Heavy Duty Wall Band - 324mm

Sflue (31093ST) - Short Ext. Bracket Heavy Duty Wall Band - 324mm

22-052
£41.99 (including VAT)
In stock
Sflue (31093LG) - Long Ext. Bracket Heavy Duty Wall Band - 600mm

Sflue (31093LG) - Long Ext. Bracket Heavy Duty Wall Band - 600mm

22-054
£52.99 (including VAT)
In stock
Sflue (7002900) - Universal Roof Support

Sflue (7002900) - Universal Roof Support

22-067
£48.99 (including VAT)
In stock
Your 125MM (5 INCH) Questions Answered

What are the primary components of a 125mm (5 inch) chimney flue system? -

A typical 125mm chimney flue system consists of adaptors, pipes, bends, tees, supports, firestops, flashings, terminals, and various accessories like storm collars and rain caps.

Are 125mm (5 inch) chimney flue products suitable for both residential and commercial installations? +

Do I need professional help to install a 125mm (5 inch) chimney flue system? +

Can I combine different brands of 125mm (5 inch) chimney flue products? +

How do I know which 125mm (5 inch) chimney flue products are suitable for my appliance? +

Are 125mm (5 inch) chimney flue products durable and long-lasting? +

Do I need to regularly maintain my 125mm (5 inch) chimney flue system? +

At National Flues, we pride ourselves on offering top-notch 125mm (5 inch) chimney flue products that meet industry standards while providing durability and reliability. Our range covers everything from adaptors for seamless connections to various pipe lengths, bends for navigating corners, and essential accessories like firestops and flashings. You can trust our products for their high-performance and ease of installation, making them ideal for both residential and commercial applications. With National Flues, you can rest assured that your flue system is in good hands.
Why Buy 125MM (5 INCH) Products
Our 125mm (5 inch) chimney flue products are versatile and can be used in a wide range of applications, including wood-burning stoves, gas fires, and solid fuel heaters. These products are essential for safely directing smoke and gases out of your property, ensuring proper ventilation and compliance with building regulations. Whether you are a homeowner looking to upgrade your fireplace or a professional installer in need of reliable flue components, National Flues has the solutions you need to complete your project with confidence.

Trusted By Trade Professionals

Our 125MM (5 INCH) products and services are trusted by hundreds of professionals nationwide. We're committed to providing quality and reliability that meets the high standards of our customers.

Dedicated Support

Experience our unparalleled customer service and support when you buy 125MM (5 INCH) from National Flues. Our team is here to assist you every step of the way, ensuring your needs are met with expertise and care.

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