Cuprinol Clear Woodworm Killer 5L

Product rating
4.5 out of 5 stars
Product code:



£9.20 per L

Cuprinol Clear Woodworm Killer 5L

Product code:
Cuprinol Clear Woodworm Killer 5L



£9.20 per L

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Product Details

Product Information

You can apply this woodworm killer from Cuprinol to , using a brush, to provide protection. It takes 1-3 days to dry and will cover up to 5m² per litre on average.

  • Kills woodworm & prevents reinfestation

Features and Benefits

Cuprinol Woodworm Killer (WB) is a clear water-based low odour formulation that kills all types of woodworm. Its deep penetration prevents re-infestation and ensures effective protection for years to come.

  • Prevents re-infestation
  • Long lasting protection
  • Low odour formula

Technical Specifications

Technical specification of Cuprinol Clear Woodworm Killer 5L
Brand Cuprinol
Colour description Clear
Coverage Up to 5m² per litre
Drying time 1-3days
Location Interior
Paint/Stain/Varnish base Water-based
VOC description Low
Application Brush
Paint type Treatment

Health and Safety

Please note that this item has additional safety or regulatory datasheets available. The product may have possible health and safety hazards covered in these documents. Refer to the container for full information and always follow the instructions.

Help & Advice

Wall Painting Calculator

Your requirements

1. What are the wall dimensions?
2. What are the dimensions of the windows / areas that you don't want to cover in metres?
3. How many doors in the room?
4. How many coats of paint do you want?

Your results

You require:

  • 00 litres of paint

This is based on a coverage of 10m² per litre of paint. Always check the coverage on the side of the tin before buying.

How to guides

How to prepare a wall for painting

How to prepare a wall for painting

While it can be tempting to get painting as soon as possible when you want to decorate a room, it’s worth taking the time to make sure your room and surfaces are best prepared before you begin. Getting the preparation right is crucial to achieving the perfect finish. It’ll also help to keep things neater and cleaner, and reduce the need for additional coats of paint. No paint can completely cover dirty or uneven surfaces, so tackling this at the start of the project avoids the need for extra work later on.

In this guide we’ll walk you through the most important steps to take, and show you how to;

  • Empty your room ready for decorating, and protect fixtures and fittings you aren't painting
  • Clean your walls to help paint adhere
  • Fill holes and cracks and smooth your walls for the best possible finish
  • Prime stained surfaces or those which have not been painted before

Once you've completed these tasks you should have a smooth, even surface ready to be painted.

Walls painted green with white trim

Buying guides

Primer buying guide

Primer buying guide

If you're painting on bare wood, plaster or metal surfaces, you'll get a better result if you use a primer first. It provides a surface which the paint can bond to and stops the paint being absorbed. Find out more what you need and for what surface.

Reviews 4.5  out of 5 stars

Cuprinol Clear Woodworm Killer 5L is rated 4.5 out of 5 by 4.
  • y_2018, m_5, d_25, h_5
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_4
  • loc_en_GB, sid_5010212591581, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_diy
Rated 5 out of 5 by from Recommended Easy to apply and a product that isn’t too pungent. Effective and economical in the larger quantity.
Date published: 2017-10-11
Rated 5 out of 5 by from great treatment of wood Very pleased with product, goes on well and very little odour - water based so not suitable for furniture but very good for floorboards where I had a small outbreak of the little devils
Date published: 2017-03-17
Rated 5 out of 5 by from Does what it says on the tin. Branded name what could be wrong have used this product before.
Date published: 2017-01-09
Rated 3 out of 5 by from The Good & The Bad We have recently done up a old house that had woodworm in 3 rooms that had infested the floorboards and the joists below. We ripped out all of the old floorboards and deposed of them, we then cleaned out all of the dust / debris under the floor and used wire brushes to scrub the joists clean ready to be treated with woodworm killer. The Good: Is this product goes on really easy, we used brushes to paint it on and then a sprayer for the places we couldn't brush. It not only went on well but seemed to soak into cleaned joists well enough, however I'd say at least 2 good coats are needed to make sure you cover everywhere. The Bad: The bad parts about this product are firstly the price and amount you actually need to treat 2 or 3 rooms. In total we used two 5l can per room / per coat. Meaning for an average sized double bedroom your going to need about 4 large tins to give 2 coats, and that's just treating the joists. Like stated we had 3 rooms to treat meaning in total we ended up buying about 12 tins of this stuff just to treat the joists. We will then probably need another 6 tins to treat the new floorboards that are been laid. Overall it will probably cost us about £700 to treat the 3 rooms, plus we also had to buy protective clothing / gloves / masks / brushes / sprayer so I'd say the grand total to treat 3 rooms was about £800 which provided 2 good coats over the joists and enough to treat the new floorboards. The other bad thing about this product is that is doesn't actually tell you what kind of mask you need to buy to stop you inhaling all of the fumes. It simply says "Wear Appropriate Protective Equipment" but it doesn't actually tell you what grade. For example there are about 15 different grades of face masks and it doesn't tell you which one you need. Having called customer services we were told to wear a P2 rated face mask to protect from fumes and vapours. One other thing to remember is that this stuff does have a fairly strong smell and would suggest you don't go in the room for 3 or 4 days after treatment. From other peoples reviews it takes about a week for the smell to dissipate, in my personal opinion I'd give it at least 1 week before laying any carpets or floor coverings. OVERALL: It seems like a good product, goes on well enough but it does become very expensive if you have a large area to cover. Like stated it cost us about £800 in total to treat 3 rooms with 2 good coats over the joists and new floorboards, in reality you can have a professional spraying company come in for about £1200 / £1500 with which you get a 30 year guarantee. If you have 1 room to treat or a fairly small area such as decking or a garden shed then this product would work great. If like us you have 3 or 4 rooms to treat you might want to consider a professional spaying company or seek a cheaper alternative. One thing is for sure if your spraying under an old floor then you need to clean out all the dust and dirt first or else spaying will do little good. If you decide to treat the problem yourselves then be prepared to do a lot of hard cleaning / hoovering / dusting / scrubbing to get floor joists clean before applying this product. Taking into account this product is basically water with a little poison added I'd say its expensive. From what I can gather its 95% water. In my eyes its seems like were paying £42 for a tin of water with a few scoops of woodworm poison added, in my opinion £25 a tin would be a better price.
Date published: 2017-02-09
  • y_2018, m_5, d_25, h_5
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_4
  • loc_en_GB, sid_5010212591581, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_diy

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