House in Neath with exterior banding and window heads, painted on the left, buff sandstone on the right

Exterior Banding & String Course Mouldings

Kayvic banding and string course mouldings are lightweight EPS profiles with a Hyper Polymer coating, made in Ammanford. Seven standard profiles or bespoke, with a 15-year guarantee on the coating and pallet delivery to the UK and Ireland.

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Banding and window heads replaced like for like by Kayvic on a house in Neath, 2026; painted on the left, as delivered on the right.

Banding or string course?

Both are horizontal mouldings run across a facade, often at floor level or linking windows. Plain, flat profiles are usually called banding; shaped ones, string courses.

Standard profiles and sizes

RefProfileHeight (mm)Projection (mm)
K1Square Profile10050
K2Classic Ogee14060
K3Decorative Cornice10040
K5Deep Profile Cornice15060
K6Half-Round12060
K7Curved Cove12060
K9Stepped Cornice12560

Bespoke profiles up to about 300 × 300 mm.

Browse all external mouldings

Corners

No ready-made corner pieces. Corners are cut on site, so banding fits any angle.

Fixing

OB1 or CT1 adhesive, never solvent-based (solvents attack polystyrene), onto render, brickwork, blockwork or external wall insulation (EWI). Not timber. Surface clean, dry and dust-free. Fit it yourself or ask your builder.

Painting, delivery, guarantee, price

Supplied in buff sandstone for masonry paint; repair kit available. Pallet delivery to the UK and Ireland, about 4 weeks' lead time, no minimum order, free samples. 15-year guarantee on the coating. Prices on application.

Frequently asked questions

Seven standard profiles (K1, K2, K3, K5, K6, K7, K9), 100–150 mm high with 40–60 mm projection. Bespoke up to about 300 × 300 mm.

No. Corners are cut on site, so banding fits any angle.

Yes. It suits EWI as well as render, brickwork and blockwork, but not timber.

OB1 or CT1. Never a solvent-based adhesive.

Yes, a 15-year guarantee on the coating.

About 4 weeks, on a pallet to the UK and Ireland. No minimum order; free samples.

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Send run length in metres, corners and profile for a quote.