HD Timber Coating: Protecting Timber Where Tape Can’t Reach

The Problem – Even Treated Timber Needs Protecting

Even the best-treated timber has limits. Once you cut, drill, or notch your wood, you expose the raw end grain — and that’s where moisture gets in.

Areas like end grains, tops of posts, noggins, stringers, ledger boards, and wall plates can quickly absorb water, leading to rot, decay, and premature failure. While deck tapes remain the proven choice for protecting joist tops, these tricky details often need a different kind of defence.

The Solution – HD Timber Coating

Walther Strong HD Timber Coating is purpose-built for areas tape can’t easily cover. This fast-drying, rubberised waterproof coating forms a flexible moisture barrier on exposed timber, keeping water out and longevity in.

✅ Extends deck frame lifespan
✅ Fast drying — touch dry in as little as 20 minutes*
✅ Creates a waterproof barrier against moisture ingress
✅ Low-VOC formulation — safe and reliable
✅ Easy application with brush or roller

(*Drying time may vary depending on temperature and humidity.)

Complete Protection — Together with Deck Tape

Used on its own, HD Timber Coating protects cut ends, posts, and detailed joints. When used alongside Walther Strong Deck Tape, it becomes part of a complete deck frame protection system — covering every surface, from joist tops to hidden corners.

Together, they ensure the best ‘Deck Correct’ protection for a quality subframe.

How To Apply HD Timber Coating

Use a standard brush or heavy-duty roller to apply a single, generous coat directly onto clean, dry timber.

• Use above 4°C in dry conditions
• Avoid application on damp or contaminated surfaces
• Becomes touch dry in 20 minutes, and fully cured in 24 hours at 21°C
• Once cured, the surface may remain slightly tacky — this is normal and does not affect performance

Each 4 kg tub protects a huge variety of timber applications.

Why Professionals Choose HD Timber Coating

• Coats hard to reach places – perfect for corners, end grains, and joins where tape won’t stick
• Dries fast – minimising downtime between prep and deck board installation
• Clean, controlled application – less mess, less waste, less hassle
• Complements your existing Walther Strong system – for total frame protection

Protect Your Deck With Walther Strong

Your timber deck frame is the foundation of your outdoor space — protect it properly with Walther Strong.
HD Timber Coating gives you a simple, reliable way to safeguard vulnerable timber details and keep your deck looking its best for years to come.

Pair it with Walther Strong Deck Tape for complete, professional-grade protection against moisture and rot.