Catnic Open Back Cavity Wall Extra Heavy Duty Lintel - CX90/100

Name: Catnic Open Back Cavity Wall Extra Heavy Duty Lintel - CX90/100
Brand: Catnic
SKU: ancozkoftb
Availability: InStock

Open Back Lintels are designed for cavity wall construction and feature integrated insulation, pla...

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Product Information

Full details

This guide is for builders and construction professionals using the Catnic CX90/100 Extra-Heavy Duty Open Back Cavity Wall Lintel. The primary benefit is its robust support for heavy loads, ensuring structural integrity in cavity wall construction. A key consideration is the need for proper propping during installation to allow mortar to cure correctly. This lintel features integrated insulation, a built-in damp-proof course (DPC), and is designed for use in cavity walls. Its durable construction and corrosion protection make it suitable for various applications, including timber frame construction.

All features

Model Part Number	CX90/100
Brand	Catnic

Extended Product Information

FAQs

What is the maximum span for the CX90/100?

The maximum span depends on the load. Refer to the product specifications and load tables provided by Catnic for accurate guidance.

What is the purpose of the built-in DPC?

The DPC prevents moisture from penetrating the wall and protects the structural elements from damage.

How do I determine the correct size of lintel to use?

You should consult load calculations and consider the cavity width, the type of construction, and the loads the lintel will need to support. Always check the Catnic specifications.

What is the minimum bearing required?

A minimum bearing of 150mm is required at each end of the lintel.

Can this lintel be used in timber frame construction?

Yes, the Catnic CX90/100 is suitable for use in timber frame construction.

What kind of corrosion protection does the lintel have?

The lintel has duplex corrosion protection, a galvanized and powder-coated finish for lifetime resistance.

What are the standard lengths available?

Standard lengths are available in 150mm increments up to 3000mm. Lengths from 3000mm to 4800mm are available in 300mm increments.

Troubleshooting

Lintel appears to be sagging or flexing.

Check the propping. Ensure it is adequately supporting the load and that the mortar has fully cured. If the problem persists, reassess the load calculations and consider a higher-rated lintel.

Moisture is penetrating the wall.

Verify that the DPC is correctly installed and that it is not damaged. Check the pointing and any seals around windows or doors above the lintel.

Difficulty in plastering.

Ensure that the plaster key is clean and free from debris. Use appropriate plastering techniques to ensure a good bond. If necessary, use a bonding agent.

Pros and Cons

Pros

Durable construction ensures long-term performance.
Built-in DPC protects against moisture ingress.
Continuous insulation enhances thermal efficiency.
Suitable for various load-bearing applications, including roof and floor support.
Duplex corrosion protection provides excellent resistance to the elements.

Cons

Requires proper propping during installation.
Installation requires adherence to specific guidelines for mortar curing.
Heavier than standard lintels due to its extra-heavy-duty design.
Requires careful consideration of load calculations and bearing requirements.
May require additional planning due to its size and weight.

Setup, Compatibility & Care

Preparation: Before installation, ensure the cavity width is between 90mm and 105mm. Check the load calculations to confirm the lintel is suitable for the specific application.
Installation: Position the lintel with a minimum bearing of 150mm at each end. Ensure the DPC is correctly aligned.
Propping: Use appropriate propping to support the masonry during construction. The propping should remain in place until the mortar has fully cured.
Mortar: Use a suitable mortar mix for the blockwork.
Alignment: Ensure the lintel is level and correctly aligned before laying any blocks above it.
Compatibility: Compatible with various types of masonry and suitable for use in timber frame construction.
Care: Avoid damaging the protective coating during installation. Handle the lintel with care to prevent any impact damage.
Maintenance: No specific maintenance is required; the duplex corrosion protection ensures long-term durability. However, it's good practice to inspect the area periodically.