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THE BALUSTRADE NOTEBOOK

BS1, BS4, BS5 or BS6: compare timber balustrade profiles

BS1 is the slat option, BS4 adds decorative motifs, BS5 uses turned balusters and BS6 uses square dressed balusters in Heritage’s published comparison. Start with that visual distinction, then check the exact supplier code, rail and component specification. A family name alone does not define the entire panel.

Timber Balustrades planning guide · · Product planning

Heritage BS1 slat balustrade reference drawing with handrail and bottom rail profiles
Original Heritage BS1 product reference drawing. Use the exact supplier listing to confirm the supplied specification.

Compare the character of each family

FamilyPublished profile typeDesign question to ask
BS1SlatWould a straightforward repeated vertical pattern suit the façade?
BS4Slat with decorative motifHow should the motifs relate to each panel’s centre?
BS5Turned balustersDoes the rounded detail connect with existing posts or ornament?
BS6Square dressed balustersWould a stronger square-member rhythm suit the surrounding joinery?

These questions help you shortlist a style without assigning a pattern to only one type of house. A simple cottage, an ornate verandah and a contemporary addition can call for different levels of detail. Compare each option against the existing roofline, post proportions and window frames before choosing from a small catalogue thumbnail.

BS1: let the repetition do the work

A slat panel creates a direct, regular pattern. It is a useful starting point when the façade already has decorative features and you want the balustrade to sit quietly beside them. Look at the balance between the upright members and the open spaces, particularly where a long run meets a short return.

Compare rail choices at the same time. A deeper-looking top rail can change the visual weight of the complete panel even when the vertical pattern stays similar. Request the specific rail profile with your preferred BS1 listing rather than relying on the family drawing alone.

BS4: plan the decorative positions

Motifs introduce focal points within the run. Study where they fall relative to the posts, entry and panel divisions. On a symmetrical frontage, a centred motif can be part of the design intention; an opening with an off-centre stair or post may need a different composition. Use an elevation sketch to explain the arrangement you want.

Heritage identifies motif options A–G. Include the selected motif reference with the panel code in your enquiry. If replacing one old section, photograph the surviving motif directly from the front so the supplier can compare its shape and proportions.

BS5 and BS6: compare shape in natural light

Turned profiles and square profiles catch light differently. A turned member introduces a changing outline and curved surfaces. A square member gives a more consistent straight edge. When choosing a painted finish, consider the shadows each pattern makes as well as the paint colour itself.

A small sample or the original profile drawing can reveal details that disappear in a distant photograph. For matching work, ask about the actual turned pattern or square section supplied. A general “turned baluster” description is too broad to establish a close visual match with an existing installation.

Confirm the whole specification

Supplier listings differ in some rail dimensions and nominal member quantities, so do not combine one supplier’s component count with another’s product image as a final order. Confirm member sections, set-out, rail compatibility and fillets for the exact code. The source brochures are useful references, with the written quote resolving the supplied product.

Compare the traditional timber collection in the studio, or consider the Hampton pattern family for framed diagonal geometry. Calculator quantities and spacing are estimates for discussion. They do not confirm the required height, structural capacity, installation details or compliance of your project.

Sources & editorial scope

Browse balustrade photographs from the brochures, websites and workshop. Confirm the selected pattern and dimensions with our team.

Reference record: 24 October 2026. Confirm the current product and written quote before ordering.