Joist Support - Ø 100
At a Glance
- - Dual stainless steel construction (304 outer, 316 inner; 0.40mm each)
- - Compressed rockwool insulation for optimal heat resistance
- - HETAS approved and CE marked for high industry standards
- - Easy assembly with integrated Locking Band system
- - Designed for solid fuel, gas, and oil appliance compatibility

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.
We Won't Be Beaten On Price
At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:
- Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
- Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
- Operational Efficiency: We have streamlined processes to reduce overhead.
Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.
Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
Have Questions?
Phone: 01670 206999
Email: [email protected]
- Info
- Specs
- Install
- FAQs
The Joist Support Ø 100mm is designed specifically for solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, oil and gas boilers, and other solid fuel appliances. Crafted with precision, it features a robust construction with an outer skin made from 304 grade stainless steel and an inner skin of 316 grade stainless steel. Both skins have a thickness of 0.4mm, ensuring durability and resistance to high temperatures.
The insulation consists of compressed rockwool with a density of 200kg/m3 TWPro and 128Kg/m3 for added safety. It maintains a safe distance to combustibles: 50mm for TWPro and 60mm for KC. Approved by HETAS and CE marked, it adheres to the highest standards: TWPro EN1856-1 T600 N1 W V2 L50040 G50, TWPro EN1856-1 T200 W V2 L50040 O20, KC EN1856-1 T600 N1 W V2 L50040 G60, and KC EN1856-1 T200 W V2 L50040 O20.
This advanced design is complemented by the ease of installation, secured together using a Locking Band. Ensure you maintain the required distance from any combustible materials for optimal safety and performance.
SKU: 15-100-068
Technical Specifications | |
---|---|
SKU | 15-100-068 |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Inner Material | 316 Stainless Steel (0.40mm thick) |
Insulation | Compressed Rockwool (200kg/m3 TWPro; 128kg/m3 KC) |
Certifications | HETAS, CE Marked |
Combustible Clearance | 50mm for TWPro, 60mm for KC |
Load Support | Up to 3 metres maximum distance |
Suitable For | Solid fuel, woodstoves, gas and oil boilers, and other similar appliances |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. If you need faster stove or fireplace delivery please give us a call. We can often reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
Our Joist Support Ø 100mm is a reliable and sturdy choice for your chimney and flue system, ensuring safety and efficiency. We deliver nationwide and cater to both retail and trade customers, offering unbeatable prices and dependable delivery.
The Joist Support Ø 100mm is designed to support chimneys as they pass through floor joists, ensuring even weight distribution and safety.
National Flues is a leading supplier of high-quality flues and fireplaces across the UK, known for unbeatable prices, reliable delivery, and exceptional service to both retail and trade customers.
