ACS Boracol 5Rh - Teak Deck Wood Treatment

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ACS Boracol 5Rh - Teak Deck Wood Treatment

ACS | Boron Wood Treatments

ACS Boracol 5Rh is a Professional Grade, Ready-to-use, Multi Purpose Clear Boron Based Solution which is primarily used as a Teak Deck Wood Treatment for Yachts and Superyachts.

In addition, ACS Boracol 5Rh can be used to eradicate and inhibit Organic Growth on Masonry & Brickwork, such as algae, mould, mosses and lichen. ACS Boracol 5Rh may also be used as a Wood Preservative Treatment to help protect timbers against Woodworm (and other wood boring insects) and against Wood Rotting Fungi (Dry Rot and Wet Rot).

Available in 5 Litre Containers, Ready-to-use Solution.

  ACS Boracol 5Rh carries the HSE Approval No 8984.


ACS Boracol 5Rh - Teak Deck Wood Treatment

ACS Boracol 5Rh is a Professional Grade, Ready-to-use, Clear Boron Based Solution containing Disodium Octaborate Tetrahydrate (DOT) and Benzalkonium chloride for use as a Teak Deck Wood Treatment for Yachts and Superyachts.

Not only does it keep mould at bay, ACS Boracol 5Rh removes all impurities from your decking to give you a clean surface that lasts! ACS Boracol 5Rh is a safe and environmentally friendly way to treat your wood.

In addition, ACS Boracol 5Rh can be used to eradicate and inhibit Organic Growth on Masonry & Brickwork, such as algae, mould, mosses and lichen.

ACS Boracol 5Rh may also be used as a Wood Preservative Treatment to help protect timbers against Woodworm (and other wood boring insects) and against Wood Rotting Fungi (Dry Rot and Wet Rot). 

ACS Boracol 5Rh is registered under the HSE COPR 1986 Regulations for use as directed (HSE No: 8984). Refer to Safety Data Sheet. Keep away from children.

  Read our Guides on 'How to Treat Woodworm & Wood Boring Insects' and 'How to Identify & Treat Dry Rot and Wet Rot on Timbers'

Product Benefits:

  • Ready-to-use solution, no diluting required.

  • Multi-use preservative with wide spectrum of activity 

  • Low VOC (Volatile Organic Content)

  • Practically Odourless and Non Staining

  • Non Flammable

  • Equally Effective on Masonry and Timber

Typical Applications:

  • As a Teak Deck Wood Treatment for Yachts and Superyachts

  • As a Surface Biocide to Eradicate and Inhibit Organic Growth (Algae, Mould, Mosses and Lichen).

  • As a Wood Preservative Treatment against Woodworm and other Wood Boring Insects.

  • As a Wood Preservative Treatment against Wood Rotting Fungi (Dry Rot & Wet Rot).

Active Ingredients:

Disodium Octaborate Tetrahydrate 5% w/w

Benzalkonium Chloride 1-3% w/w

Ethandiol 5-10% w/w 


For Treatment of Teak Decks on Yachts:

Wash to remove all dirt and coatings (some manufacturers of Teak Decking do not recommend pressure washing, please check with the manufacturer beforehand). Allow the surface to dry out until the surface is just damp.

Apply one coat of Boracol 5Rh, by brush or spray, to refusal (visibly wet on the surface, but not running off). Avoid any run off to other parts and from the boat.

Allow the surface to dry out until just damp again. Apply a second coat of Boracol 5Rh to refusal.

For Organic Growth on Masonry:

Remove any thick layers of organic growth with a suitable brush or scraper.

Some species of lichens are resistant to treatment due to their impervious surface. To optimize the effect of the biocide solution it is advisable to abrade the face of such growths prior to treatment (e.g. by wire brush).

Apply ACS Boracol 5Rh under dry conditions using a coarse spray to saturate the surface. Allow to dry thoroughly and apply a second coat if required.

Apply to refusal as coverage will be governed by the porosity and type of substrate i.e. wood, brickwork, concrete.

ACS Boracol 5Rh is suitable for application on roofs, walls timbers, paths and patios.

For Woodworm and Fungal Decay on Timbers:

Clean all wooden surfaces using a brush or vacuum.

Cover electrical installations, water tanks, stored goods and isolate adjacent areas not
requiring treatment. Lift floorboards as required and clean out debris.

ACS Boracol 5Rh can be applied to timbers by brush or coarse spray.

During spray application some respiratory / face protection will normally be required.

Under normal circumstances one coat will be sufficient, however ensure that all accessible wood surfaces are thoroughly wetted out. Any surface which rapidly absorbs ACS Boracol 5Rh should be sprayed again at the time.

In the case of timber sub-floor areas, the base of the structural walls, sleeper walls and oversite (solum) should be treated with ACS Boracol 5Rh.

Apply a second coat of ACS Boracol 5Rh after one to eight hours where there is severe fungal attack or the presence of House Longhorn beetle (Hylotropes Bajulus).

Provide adequate ventilation following treatments and maintain as long as possible after re-occupation.

Please note that any metallic surfaces (such as copper pipes) should be isolated from the treatment area as the boron salts may cause a chemical reaction causing surface pitting of the metal.


By Brush: 1 litre per 2m² to 4m² of surface.

By Spray: 1 litre per 2m² to 4m² of surface.


As long as timbers are dry, re-occupation can take place 48 hours after treatments are completed.

Floor coverings should not be laid for at least 72 hours (or longer for certain impermeable or other floor materials, e.g. vinyls, foam-backed carpets etc.) In all cases, use lining papers to protect coverings from direct contact with timbers.

Treated timbers can be over coated when dry with a range of decorative / protective paints etc. (to ensure compatibility check a small area first).

Data Sheets

Technical Data Sheet

Safety Data Sheet

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£32.95 ex. VAT | £39.54 inc. VAT

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