Ligna by Preschem
The range How it works Where to buy Contact
03 9532 0679 sales@ligna.com.au

Protecting timber since 1988

NØ-ROT

System

A complete timber protection system designed to stop rot and extend timber life.

Ligna NØ-ROT Rods, 20 rods Ligna NØ-ROT Inject, 300 mL cartridge Ligna NØ-ROT Gel, 1 litre

Three ways in.

Rods

NØ-ROT Rods

Slow-release timber preservative for preventing decay and localised insect attack in timber.

  • Window frames
  • In-ground posts
  • Rafter tails
  • Fence rails
Details

Where it goes

  • Stumps and posts in concrete
  • Bearers and joists
  • Exposed endgrain
  • Anywhere with persistent moisture concerns

Technical data

Actives
124 g/kg boron (B) as disodium octaborate tetrahydrate, 110 g/kg fluorine (F) as sodium fluoride
Pack size
60 g — 20 rods
Schedule
Schedule 6 — POISON
APVMA
39652/154880
Inject

NØ-ROT Inject

A thick, flowable gel for remedial and preventative treatment of damp timber structures.

  • Joinery and frames
  • Timber cracks
  • Borer holes in raw internal timber (inject in holes)
  • Bathroom architraves growing fungus
Details

Where it goes

  • Tight, hard-to-reach spots
  • Industrial strength applications
  • Bathrooms and under subfloors with poor ventilation

Technical data

Actives
111 g/L boron (B) as disodium octaborate tetrahydrate, 13.2 g/L benzalkonium chloride
Solvent
739 g/L monoethylene glycol
Pack size
300 mL cartridge
Schedule
Schedule 5 — CAUTION
APVMA
61856/300mL/0407
Gel

NØ-ROT Gel

Deep-penetrating gel that protects timber from rot with simple, easy-to-use application.

  • Damp timber frames
  • Under waterproofing
  • Repairing rotted timber windows
  • Fascia & bargeboards
Details

Where it goes

  • Window frames & sills
  • Flood-affected structural timber
  • Interior structural timber (bearers, joists, studs)
  • Masonry & concrete near affected timber

Technical data

Actives
52 g/L boron (B) as disodium octaborate tetrahydrate, 12 g/L benzalkonium chloride
Solvent
878 g/L monoethylene glycol
Pack sizes
1 L, 5 L, 10 L
Schedule
Schedule 5 — CAUTION
APVMA
60197
Shelf life
18–24 months stored cool, dry, out of sunlight

What makes it different

Diffuses into the timber

Water-based, so it carries the actives into the wood, following the moisture the fungus needs — not just a surface film.

Works on damp timber

Including flood-affected structural timber. Most preservatives need dry wood — but decay doesn't wait for dry wood.

Paint over it

Oil or water-based paint. Outdoors it works as an undercoat and needs a topcoat over it.

01

Drill

One 9 mm hole, 40 mm deep. That's the whole preparation.

02

Drop the rod in

Push it down to the bottom of the hole. No mixing, no measuring.

03

Plug it

A wooden plug on top, left long enough to cut off.

04

Cut it flush

Saw it off level with the surface. Nothing left to see.

05

Then it waits for water

Once the timber goes above 20% moisture content — the point rot starts — the rod dissolves and diffuses out through the section.

Professional grade timber protection.
Anyone can use.

Australian timber preservation science since 1988. Same lab, same chemistry the trade has relied on for decades — now in a pack you can pick up and use the same afternoon.

Common questions

Will No-Rot fix badly rotted timber?

No, and neither will any other preservative. Preservatives kill the fungus and stop decay spreading; they don't restore strength. Badly decayed timber has to be cut out and replaced, and if it's load-bearing that's a licensed tradesperson's call. They work best as a preventative and an early intervention — fungus growing in bathroom architraves, for instance.

Will it stop termites?

No-Rot controls termite and fungal damage in the timber it treats. But it's a localised treatment: it protects the timber it's applied to, not the colony or the wider structure. For an active infestation, contact a licensed pest control specialist.

I have mushrooms growing out of my bathroom timber, what can I do?

Mushrooms mean the fungus is well established and the timber has been wet for a while. Sort the water out first — ventilation, a failed seal, whatever is keeping it damp — or it comes back. Then treat the timber: NØ-ROT Gel brushed on where you can reach, or NØ-ROT Inject into architraves and joinery where a brush won't. Both help control the decay in the timber they're applied to. If the timber has gone soft, it needs cutting out.

Do I really need to use a timber preserver?

Timber costs more every year and good structural stock is harder to come by. Replacing a rotted bearer is the timber, the labour, and pulling apart whatever sits on top of it. Treating it while it's sound is a fraction of that — and it's the part of the job you still control. Protect it before you have to replace it.

Where to buy

Get hold of it.

Available at Bowens

Not sure who's closest?

Send us your postcode and we'll come back with the nearest stockist that carries the No-Rot range.

Talk to us.

Bring a photo of the job — or send one. We'll tell you which product, how many, and where it goes.

Thanks — we'll come back to you shortly.
Couldn't send that. Please email sales@ligna.com.au or call 03 9532 0679.