Type 1 Wall Ties

Type 1 ties are the workhorses of tall and exposed masonry.  They’re specified where the outer leaf must resist >1 kN tension/compression—think coastal apartment blocks, hospitals, schools and steel-frame façades over 15 m high.  All ties below are Grade 304 or 316 stainless, independently tested to BS EN 845-1 and fully compliant with PD 6697 Table 12 spacing rules.

Order before 12:00 and spend £200 ex-VAT for free next-day UK delivery.
Need a spacing schedule? Call 0118 922 7941—we’ll size the ties while you wait.

Quick-order guide

Need Type 1 performance with movement slots?  Jump to Ancon SDV.

What makes a Type 1 tie different?

• > 1.0 kN design resistance in both tension & compression.

• Deep pressed drip prevents water tracking to the inner leaf.

• Tangle-free profile (Vista VST1 & TT1) speeds laying—no knots in the bucket.

• A4 options for marine or chemical works (call for lead times).

Pair with insulation-retaining clips to keep partial-fill boards snug against the inner skin.

Installation essentials

1. Density – 2.5 ties / m² (450 mm vertical × 900 mm horizontal); double within 225 mm of openings.

2. Embedment – 50 ± 10 mm in each leaf; drip centred in the cavity.

3. Compression sleeves – slip a stainless sleeve over ties when cavities exceed 150 mm.

4. Mixing metals – always match stainless ties with stainless fixings and restraint channels to avoid bimetallic staining.

For cast-in channels on high-rise frames see 21/18 Omega Channel & SP21 Ties.

Frequently asked questions

When must I specify Type 1?

• Buildings >15 m tall

• Wind-loading category “Very Severe” (BS 6399 / Eurocode C4)

• Any façade panel over 9 m high without a structural shelf angle

Can I use galvanised Type 1 ties externally?
No.  External masonry must be stainless; galvanised is limited to protected internal walls.

Will Type 1 improve acoustic separation?
Yes—the heavier section increases stiffness at cavity ties, aiding flanking-sound control in tall blocks.

Delivery cut-off & surcharges?
Order by noon and meet the £200 ex-VAT threshold; see our delivery information for Highlands & Islands exceptions.

Complete your heavy-duty restraint package

• Bed-joint mesh for crack control – Ladder Reinforcement

• Movement accommodation – Stainless Movement Ties

• Channel restraint – 25/14 & 21/18 Systems

• In-depth guidance – Choosing the Right Wall Tie (blog)

Need tie spacing calcs, UKCA documents or a toolbox talk? Contact us or call 0118 922 7941—Spechunter chases down every spec so you don’t have to.

Spechunter.co.uk – Chasing down specialist construction specifications since 1988. Fact checked and Updated May 2025.