Birtley HD90 Heavy Duty 100mm Cavity Lintel
The Birtley HD90 is a Heavy Duty cavity wall lintel engineered for 90–105mm cavities, providing robust structural support with factory-fitted insulation, enhanced thermal performance and durable Hot Dip Galvanised protection.
Key Features
✓90–105mm CavityDesigned for 90mm to 105mm cavity ranges to suit different wall constructions.
✓Heavy DutyStructural Grade Steel provides robust strength and reliable load-bearing performance.
✓Factory-Fitted InsulationReduces thermal bridging by 55% to improve overall wall performance.
✓Super Galv CoatingHot Dip Galvanised with Zinc Protection for superior corrosion resistance and long service life.
✓No BaseplateBaseplate-free design simplifies integration into brickwork.
✓Plaster KeyPlaster key to the inner leaf helps achieve clean, accurate plaster finishes.
Dimensions & Specification
| Manufacturer |
Birtley |
| Product Code |
HD90 |
| Wall Construction |
Cavity wall |
| Cavity |
90–105mm |
| Outer Leaf |
100mm |
| Inner Leaf |
100mm |
| Finish |
Hot Dip Galvanised / Super Galv |
| Baseplate |
None |
| Available Lengths |
900mm–4800mm |
Where to Fit
The HD90 is designed for demanding cavity wall applications across 90–105mm cavities. Bed the lintel fully on bricklaying mortar and use with a cavity tray as recommended to manage moisture and airflow effectively.
The factory-fitted insulation, 100mm outer and inner leaf pairing and plaster key make it suited to brickwork projects where structural support and thermal performance are important.
Installation & Technical Information
Bed fully on bricklaying mortar to ensure solid, stable seating. The product should be used with a cavity tray. Birtley's exclusive galvanising process provides enhanced zinc protection without relying on inferior paint protection.
For tailored advice on sizing and suitability, speak with Wade's Lintel Technical Team.
Technical Downloads
The existing product information identifies a Birtley HD90 datasheet. Use the technical resource supplied with the product or contact Wade's Lintel Technical Team for the current document.
Contact Technical Team →
Need Help Selecting the Right Cavity Lintel?
Wade's lintel experts can help confirm the correct size, cavity width, loading requirement and application.
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Frequently Asked Questions
What cavity width is the HD90 designed for?
The HD90 is designed for 90–105mm cavity ranges.
What insulation does the HD90 have?
It has factory-fitted insulation stated to reduce thermal bridging by 55%.
Does the HD90 have a baseplate?
No. The HD90 lacks a baseplate.
How should the HD90 be installed?
Bed the lintel fully on bricklaying mortar and use it with a cavity tray as recommended.
