Extended Product Information
FAQs
What type of wall is the Catnic ANG Lintel designed for?
This lintel is specifically designed for angled single leaf external masonry walls, supporting brickwork over openings.
What does 'standard duty' load rating mean?
A 'standard duty' rating indicates that the lintel is suitable for typical loads encountered in residential and light commercial construction, up to a maximum of 15kN, when installed correctly.
How much bearing should the lintel have on each side?
The Catnic ANG Lintel requires a minimum of 150mm end bearing on sound masonry on each side of the opening to adequately transfer loads.
Is this lintel suitable for internal walls or cavity walls?
No, this specific ANG Lintel is designed for angled single leaf external masonry walls and is not suitable for internal walls or cavity wall constructions.
How do I choose the correct length for my opening?
To determine the correct lintel length, add at least 300mm to your clear opening width (150mm bearing on each side). Always round up to the next available standard lintel length to ensure adequate support.
What is the difference between galvanised and black powder-coated finishes?
Both finishes provide corrosion resistance. Galvanised lintels (typically up to 2400mm) have a zinc coating. Black powder-coated lintels (2550mm and longer) have an additional durable polyester powder coating, offering enhanced weather protection and a different aesthetic.
Where can I find detailed installation instructions and technical specifications?
Detailed installation instructions, load tables, and technical specifications are available in the official Catnic datasheet for the ANG Lintel series. It's recommended to consult this document for precise guidance.
Troubleshooting
Lintel appears not level or plumb after installation.
Immediately address any misalignment before mortar cures. Remove the lintel, re-prepare the bedding mortar, and re-install, ensuring careful leveling and plumbing with appropriate tools. Ensure adequate temporary propping during curing.
Small cracks appearing in masonry directly above the lintel.
This could indicate insufficient bearing, overloading, or incorrect installation. Consult the Catnic datasheet for specific bearing requirements and maximum loads. If concerns persist, a qualified structural engineer should assess the installation to prevent further structural issues.
Visible signs of corrosion on the lintel surface.
While the lintel has integral corrosion protection, severe damage or improper installation in highly corrosive environments can lead to issues. Assess if the protective coating has been compromised. If minor, clean and re-protect with an appropriate anti-corrosion paint. For significant corrosion, professional assessment is crucial, as structural integrity may be affected.
Pros and Cons
Pros
- Specifically designed for challenging angled single leaf external walls.
- Excellent corrosion resistance with tailored finishes (galvanised or powder-coated).
- Meets high industry standards (BS EN 845-2) for reliability.
- Supports a wide range of opening sizes (900mm - 3900mm).
- Standard duty load capacity (up to 15kN) suitable for many projects.
- Compatible with common 100-102mm brickwork sizes.
Cons
- Not suitable for cavity walls or internal applications.
- Load rating is standard duty; may require assessment for exceptionally heavy loads.
- Finish type varies by length, which might be a minor aesthetic consideration for some.
- Requires precise 100-102mm brickwork for optimal fit.
Setup, Compatibility & Care Instructions ### Setup 1. Preparation: Ensure the masonry opening is clean, level, and plumb. 2. Bearing: The lintel requires a minimum of 150mm end bearing on each side. Mark and prepare the bedding mortar accordingly. 3. Positioning: Carefully lift and place the lintel into position on the fresh mortar beds, ensuring it is level and correctly aligned with the angled wall. 4. Propping: For safety and to allow mortar to cure, temporary propping may be required, especially for longer spans or immediately after placement. Consult the Catnic datasheet for specific propping recommendations. 5. Build Up: Continue building the brickwork evenly on both sides of the lintel, ensuring a full bed of mortar is used over the lintel. ### Compatibility - Wall Type: Exclusively designed for *angled single leaf external masonry walls*. - Brickwork: Compatible with 100-102mm outer leaf brickwork. - Spans: Suitable for openings between 900mm and 3900mm. - Load: Standard duty, rated for up to 15kN. ### Care - Inspection: Periodically inspect the lintel and surrounding masonry for any signs of cracking, corrosion, or movement, especially after extreme weather conditions. - Cleaning: For powder-coated lintels, a gentle clean with mild soap and water can maintain its finish. Avoid abrasive cleaners or tools that could damage the coating. For galvanised lintels, routine cleaning is typically not required. - Damage: If any damage to the coating or the lintel itself is observed, consult a qualified structural engineer for assessment and advice. - Avoid Overloading: Ensure no additional loads are inadvertently placed on the lintel that exceed its 15kN standard duty rating.