Woodworm - insect escape holes found in wood

Where real people answer your DIY Doctor building repair question

Property Repair Systems - 01626 872650 DIY Doctor Line

Click for Home Page


DIY Doctor Project Name - Woodworm

Relevant products

Buy Boron Ultra 12 Powder for dilution - click here

Buy Boron Ultra 12 already diluted - click here

Buy Brushing Gel for heavily injected patches and damp wood - click here

How we can help - we can analyse your building's symptoms, find the causes, provide the solutions

Symptoms - holes in wood from 1mm in diameter up to 10mm in diameter, dust dribbling from the holes

Photos - extreme examples - yours may be much less obvious - please send us examples

Common furniture beetle holes - fresh with bore dust

Heavy attack - holes with fresh dust

Woodworm in roof timbers

Woodworm in roof timbers

Woodworm to scale, with a 50 pence piece

Woodworm to scale.

Click to go to the Woodworm Shop

Click to read more in our Forum

Go to the top of this page - click here

Common diagnosis - Common Furniture Beetle, Anobium Punctatum, but this may not be correct

Common treatment - spraying with an Insecticide based on brain toxins Permethrin or Cypermethrin, not pleasant

Common misinformation - quoting to treat old, extinct infestations, expensive waste on money

Fact Alert - some insects cannot be stopped using surface spraying alone

Fact Alert - most holes are very old and most areas do not need treatment

Fresh holes do not indicate that a recent treatment has failed, only that the infestation has not reached the end of its life cycle. Repeated re-treatment is futile and a waste of money.

Click to go to the Woodworm Shop

Click to read more in our Forum

Go to the top of this page - click here

Common causes

  • water leaks inside the building - into roof spaces, under toilets and baths
  • water leaks under the building or from next door or the road - particularly in older buildings
  • 'bridging' of the damp proof course - mainly by paths, roads, steps and added structures
  • penetrating damp, through the outside of the wall - leaking gutters, downpipes, wall penetrations like pipes, wires, old wooden plugs, cracked render, missing joint mortar
  • 'bridging' of wall cavities by debris or wet Mineral Wool insulation
  • lack of good sub floor ventilation, blocked air bricks, insufficient air bricks
  • antique furniture, logs for the fire

Before spending money on any form of damp proofing go to our Diagnosis page and check your damp for yourself - it is easy to read, non technical stuff - click here

For help with the MYTHS call our experts on 01626 872650

Go to the top of this page - click here

The answer is usually

That the woodworm have been encouraged by dampness and that the dampness in the building has been caused by a roof leak, a water leak from a drain, a water main, a foul water pipe or a central heating pipe. Do not rule out leaks being from a neighbouring property or road. Always look inside neighbouring properties to be safe. We will help you or your Builder/Plumber to find the cause.

The solutions are

Find and fix the leak(s), remove the indoor plaster (if damaged) and fit our Mesh Membrane - then replaster using Bonding Plaster. A Guaranteed result - guaranteed for 20 years.

Treat the affected timbers using one of our Boron based chemicals.

Mesh Membrane Kits from one square metre upwards - click here

Or, speak to our experts for up to 1 hour.

Click to buy a consultation with our Qualified Damp and Timber Surveyors - £120.00 including VAT -

Click to go to the Woodworm Shop

Click to read more in our Forum

Go to the top of this page - click here

Professional Guide to Damp Problems book from Property Repair Systems

Dampness in Buildings - a book reprint by Graham Coleman - become your own Expert in 1 hour! Buy our "Dampness in Buildings" reprinted book by national dampness treasure, Graham Coleman. A great read, short and to the point.

Printed Book - £9.99 -

Book Download only - £5.99 -

Home survey buy a calibrated Damp Meter - click to buy - Damp Meter - £67.87 -

Go to the top of this page - click here

Some of our relevant Shops






Testimonials - some testimonial letters from happy customers

PRS Logo

Property Repair Systems

TEL: 01626 872650 DIY Doctor Line

E: help@propertyrepairsystems.co.uk

Contact | Privacy Policy | Returns Policy | About the Author

Site written by: David Moore

David Moore, B.A. (Hons.), C.T.I.S., C.R.D.S. Technical Author


Other Property Repair Systems Sites:

www.boron.org.uk - how to use Boron based insecticides/fungicides to treat timber rots and insect attack

www.dampness-info.co.uk - how to treat penetrating dampness in walls and plaster

www.deck-treatment.co.uk - how to treat patio decks and yacht decks

www.dryrot.biz - how to kill Dry Rot in buildings

www.drywallandfloor.co.uk - membranes for lining damp walls, floors, basements and cellars

www.epoxy-info.co.uk - epoxy resins for repairing wood, concrete, brick and stone

www.fire-door-paint.co.uk - upgrade doors to 30 minutes fire resistance

www.joist-repair.co.uk - how to quickly repair joists and beams of any size

www.steel-fire-paint.co.uk - treat steel with Intumescent Paint to provide fire protection

www.timber.org.uk - systems of repair, with step by step methods

www.timber-repair.co.uk - how to repair timber beams

www.woodworm-info.co.uk - how to kill and prevent woodworm and death watch beetle

www.woodworm-expert-advice-forum.org.uk - all your questions and our answers about woodworm treatment DIY

Go to the top of this page - click here