ARMAWELD – WELD-THRU PRIMER RED
Price range: £26.75 through £122.50 +vat @ 20%
Delivery Details
Free Shipping UK mainland (Most Destinations)
Free Standard Shipping (not next day) on orders worth £100 +vat or more, which also weigh 20kg or less to non-remote, UK mainland locations.
Free shipping is shown at checkout on valid orders
Rustbuster intend to ship all orders within 24 hour via economy carriage shipping, this can be next day but could be up to 2 days.
Next day delivery DOES NOT include Saturday or Sunday. Any next day orders placed on a Friday will be received on Monday, as Saturday is not included as a working day.
Rustbuster Standard Economy shipping is £8.50+vat for up to 20kg.
Remote areas/Scottish Highlands and non-UK Mainland areas may be subject to additional charges and a longer delivery time. This is determined by our couriers not Rustbuster.
Northern Ireland and Ireland
Up to 20kg of Hazardous goods can be sent, this currently costs £35.00+vat, we do however have a Stockist in Ireland and this may workout a more cost effective way to purchase.
International shipping
International shipping prices vary, please contact Rustbuster if your country is not listed at Checkout.
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Product Details
ARMAWELD – Weld-Thru Primer Reddish Brown
Armaweld is a two-pack, fast-drying zinc silicate weld-through primer designed to provide superior anti-corrosion protection during fabrication. Perfect for MIG, TIG, and MAG/G-FCAW welding, Armaweld improves weld penetration while reducing burn-back on fresh steel.
🔧 Key Features:
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✅ Fully weldable & cuttable zinc silicate primer
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🎯 Fast drying – touch dry in ~5 minutes at 20°C
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🛡️ Anti-corrosion protection for steel fabrications
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🔥 Low fume emission during welding
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🖌️ Can be sprayed or brushed on
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⚙️ Ideal for inside sill repairs, frame work & complex builds
🔩 Weld-Thru Performance You Can Trust
When welding new steel to steel coated with Armaweld, you’ll benefit from:
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Improved weld penetration
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Minimal burn-back
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Safer welding with no harmful fume release
Whether you’re doing automotive restoration, structural fabrication, or panel builds, Armaweld helps you prime as you build.
🧱 Perfect for Internal Fabrication
Use Armaweld where you can’t return later to apply protection — such as when welding inner sills before fitting outer panels. Coat weld zones first, then weld cleanly through the primer. Finish with cavity wax after fabrication for complete protection.
🧼 Surface Prep & Application Tips
Best results come from good prep:
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Prep steel to St3 standard (wire brushes, abrasive wheels)
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Or blast to a higher standard
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Compatible with Rustbuster Phos-Kleen B for rust removal and phosphating
Mix Ratio:
2:3 by volume — 2 parts Component A (grey colour) to 3 parts Component B (activator). Supplied as a complete two-pack kit.

Hello Corrosioneers!
RUSTY here, for handy tips and guides on how to get the best from our Rust busting products, check out my helpful guides at Rusty’s Tops Tips
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