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DIY Refurb

Sovereign Deepkill 5L - Professional-Grade Woodworm & Timber Treatment Cream

Sovereign Deepkill 5L - Professional-Grade Woodworm & Timber Treatment Cream

SKU: 30609023
EST Delivery Date Est Delivery between 6th Feb and 12th Feb.
£88.50 £106.20
£88.50 £106.20 £0.00
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How much will I need?

Coverage required
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We recommend adding 10% of additional product to the calculation to account for errors, damages, and obstacles in your project

Based on your total area of 0m2 (inc. 10% wastage) you will need 1 of this product (total coverage ).
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Product Information

Professional-Grade Woodworm & Timber Treatment Cream

A high-strength, deep-penetrating cream emulsion ideal for thick-section timbers, floorboards, roofing timbers, furniture, joists, beams, and structural wood. Designed for both curative and preventative use, Deepkill destroys wood-boring insects (including Death Watch Beetle), larvae, eggs, and wood-rot fungi such as wet and dry rot.

Key Benefits

  • Deep-penetrating paste formula – penetrates dense timber by forming a temporary skin, maximising active ingredient uptake
  • High-strength formulation: 0.35% w/w Permethrin, 0.85% w/w Propiconazole, 0.40% w/w IPBC
  • Kills and prevents infestations of wood-boring beetles (including Death Watch), larvae, eggs and rotting fungi
  • Deep penetration into thick section timbers (e.g., joists, floorboards, roof supports)
  • Clear-drying, low odour — no residue left, making treated wood ready for painting or decoration
  • Versatile application: brush, spray, palette knife, or Deepkill gun — excellent for uneven or hard-to-reach areas

Product Details

  • Pack Size: 5 L (also available in 10 L)
  • Form: White emulsion paste with flash point > 64 °C and specific gravity ~0.82
  • Coverage: Approx. 1.25 m² per litre (dependent on timber density and porosity)
  • Shelf Life: 2 years (unopened)

Safety & Professional Use Only

This is a professional-use product. Always follow safety guidelines and wear PPE.

  • Contains: Propiconazole, IPBC, Permethrin
  • Hazards:
    • May damage unborn child
    • Very toxic to aquatic life with long-lasting effects
    • May cause skin and eye irritation; may trigger allergic reactions
    • Harmful if inhaled or swallowed; can cause lung damage
    • Irritant to eyes and skin; risk of dermatitis upon repeated exposure

Professional precautions: Use good ventilation; wear gloves, goggles, and coveralls; treat with no ignition sources; prevent environmental release

Ideal For

  • Eradicating wood-boring insects, larvae, eggs, and rot fungi in structural timber
  • Use on thick-section timbers: roof joists, floorboards, beams, furniture
  • Preventative treatment in renovations, conversions, and preservation projects
  • Preparing timber for decoration — dries clear with no residue
Delivery Information
EST Delivery Date Est Delivery between 6th Feb and 12th Feb.

Delivery will always take place on a weekday (Mon - Fri excl. public holidays).

An exact delivery charge will be calculated at checkout based on your order and location. Delivery may be unavailable or may incur additional charges in some remote areas of Scotland and Wales.

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Frequently asked questions

How do I track my order?

As soon as your order is dispatched, you'll receive a dispatch email with delivery dates and details for your order.

If you require an update on your order, you can email customerservice@i4lgroup.co.uk with your order number for assistance.

Can I order now and pay later?

Yes, we offer a variety of flexible payment options to all our customers.

When checking out online, you'll be able to avail of multiple buy now, pay later options with Klarna or PayPal.

The flexible payment options available to you at checkout will be based on the total value of your order.

For B2B customers, you can apply for a 30-day trade credit account, and you'll also unlock:

  • Dedicated trade pricing
  • Loyalty points and rewards
  • A dedicated account manager

Do you really have the best prices online?

Yes! We even have a price match guarantee.

We are so confident that we have the best prices out there that we will match the price of any other online or local retailer.

If you find the same product cheaper elsewhere, we will match the price — just send us the quote or website link.

Read more: Price Match Guarantee

I have a large-scale project, can I get a quote?

Yes, if you are carrying out a construction project that requires a large quantity of materials, email sales@i4lgroup.co.uk with the following information and we will get back to you with your very own bespoke price quote:

  • Delivery postcode and address
  • Mobile number
  • Company name
  • A list of required materials and their quantities

Learn more on opening a trade account.

Can I open a trade account?

Yes! Trade customers can open a B2B account to unlock bespoke pricing, B2B discounts, trade credit, loyalty points, and a dedicated personal account manager.

You can learn more here: Open a Trade Account

Can I cancel or amend my order after placing it?

Yes, if your order has not yet been processed for dispatch, cancellation/ amendments should be possible.

Our team works quickly to get your order delivered as soon as possible so it is likely that your order will be processed for dispatch within 2-3 hours of purchase.

Contact us immediately via customerservice@i4lgroup.co.uk or call 020-3481-1978 during opening hours.

If you wish to amend your order after it has been processed by our team, it will be treated as a return or a separate new order.

Read more: Returns

What is your returns policy?

Changed your mind about your order? no problem! we offer a 14 day returns period after your order is delivered.

To avail of this your order must be unused, in its original packaging, and suitable for resale.

Refunds are issued immediately after the goods are received and inspected by our team.

If an item arrives damaged or incorrect, you must notify us within 48 hours of delivery.

Prior approval is needed before returning any goods – do not return without authorization.

Special order items are exempt from returns.

Read more: Returns

Why Choose Us?

Factors Build4Less Other Stores
Customer service Easy to reach, and eager to help Difficult to contact
Shipping speed Fast and organised Unpredictable
Competitive pricing Price match guarantee What you see is what you get
Loyalty program Points + exclusive deals Basic discounts
Expert advice Free 1-on-1 sessions Self-service only
Trade accounts Bespoke pricing, trade credit, and dedicated account manager none available