Cuprinol Low Odour Woodworm Killer 1 Litre
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Product Information
Full details
The Cuprinol Low Odour Woodworm Killer 1 Litre is designed for homeowners and DIY enthusiasts tackling woodworm infestations in furniture, sheds, fences, and other outdoor or indoor wooden structures. Its key benefit is its effective, low-odour, water-based formula that penetrates deep into the wood to kill all types of wood-boring beetle larvae and prevent re-infestation for years. A key consideration is that it may darken some timbers, so testing in an inconspicuous area is recommended.
All features
| Model Part Number | 5218654 |
|---|---|
| Brand | Cuprinol |
Extended Product Information
FAQs
What types of woodworm does this product kill?
Cuprinol Woodworm Killer (WB) is formulated to kill all types of wood-boring beetle larvae.
Can I use this on painted or varnished wood?
For best results, painted, varnished, or stained wood should be stripped back to bare wood before application. The fluid does not penetrate polished surfaces effectively.
How long does it take to dry?
The minimum drying time is 24 hours, and it can take up to 72 hours (3 days) for complete drying, especially in confined spaces. Drying time may be extended in areas like under floors or roof spaces.
Will this product change the colour of my wood?
Yes, this product may cause some timbers to darken. It is recommended to apply a test area first and allow it to dry fully to check the final appearance.
Can I paint or varnish over the treated wood?
Yes, most decorative finishes such as solvent-based or water-based paints, woodstains, and varnishes can be applied after the fluid has dried.
How should I clean my brushes after use?
After use, remove as much product as possible from brushes and then clean them with water.
Is this product safe for use around pets or children?
Keep children and pets away from the treated area during application and until the surface is dry. Ensure good ventilation. Do not use on beehives or bee-keeping equipment.
What is the surface coverage of this product?
The surface coverage is approximately 5 square metres per litre on average. Rough sawn timber may absorb up to twice as much as planed wood.
Troubleshooting
Product does not appear to penetrate bare wood effectively.
Ensure wood is dry and free from dust or debris. Rough sawn timber absorbs more than planed wood; you may need to adjust application rate or ensure thorough flooding.
Wood darkens significantly after application.
This is a known characteristic for some timbers. Always test in an inconspicuous area first to assess the final colour before treating the entire surface.
Infestation appears to persist after treatment.
In severe cases, a repeat treatment may be necessary. Ensure application reached all affected areas, including injection into flight holes. Verify that all surfaces cut after treatment have also been treated.
Surface remains tacky after 72 hours.
Drying times can be extended in confined or damp environments. Ensure adequate ventilation. If the surface is still very wet, wait longer before applying decorative finishes. Check for extreme temperature conditions during drying.
Pros and Cons
Pros
- Effectively kills a wide range of woodworm species.
- Provides long-lasting protection against re-infestation.
- Low odour and water-based formulation for easier use.
- Suitable for various applications on bare wood.
- Dries relatively quickly, allowing for subsequent treatments or finishes.
Cons
- May darken some types of timber; testing is advised.
- Not suitable for polished or waxed surfaces without specific preparation.
- Requires stripping back painted or varnished surfaces to bare wood for best results.
- May require repeat treatment in severe cases.
- Surface coverage can be lower on rough sawn timber.
Setup, Compatibility & Care
Preparation: Ensure the wood is bare, dry, and clean before application. If wood is painted, varnished, or stained, strip it back to bare wood. For existing attacks of wet or dry rot, use a dedicated Cuprinol product. If colour is a concern, test on a small, hidden area first.
Application:
- Treat bare wood by flooding the surface with 2 or 3 brush coats.
- Pay close attention to end grain, corners, and joints.
- Re-treat any surfaces that are cut after the initial treatment, and all replacement timber.
- For existing infestations with flight holes, inject the product into the holes at intervals of 7-10cm (or 5-7cm for polished wood).
- For polished wood, flood the flight holes and joints, wiping off any surplus. Wax polished surfaces may require re-waxing.
- In severe cases, repeat treatment is recommended.
Drying & Recoating: Minimum drying time is 24 hours, with a maximum of 72 hours. Allow the previous coat to soak in before applying the next. Most decorative finishes like paints and woodstains can be applied once dry. Ensure adequate ventilation in confined spaces.
Compatibility: After the product is fully dry (minimum 3 days), most glues, fillers, and knotting solutions can be used. Most decorative finishes are compatible. However, do not use on beehives or bee-keeping equipment.
Care: Store in a cool, dry place, away from extreme temperatures. Clean tools thoroughly with water immediately after use.