Modular Systems

Modular balustrade systems for staircases, balconies and terraces

The cleanest, most adaptable balustrade system we sell. Stainless posts with your choice of infill, wire, glass or perforated panel, designed and assembled around your project. No on-site welding. No specialist fabricators. Tested in accordance with BS6180.

Post DIameter

42.4mm & 48.3mm

material

AISI304 / AISI316 grade stainless

INFILL

wire / glass / panel

performance

load tested components

From

£98

per linear metre · supply only · + VAT
— Quote in 1 working day
— Free design consultation
— 14-day returns
where modular systems work

Stainless modular balustrades for staircases, balconies and terraces.

Post-and-infill construction means every modular system is specified around your space — your post profile, your infill type, your fixing method. Designed and supplied from our South East base, each system is fully documented and installer-ready on arrival.

Staircase Balustrades

Our stainless steel modular systems suit virtually any staircase. There is a range of infill options. The choice is dictated by your project.

 

Balcony & Terrace Balustrades

External modular systems in marine-grade AISI316 stainless, suited to balconies, roof terraces and exposed elevations.

Commercial Projects

Modular systems for mezzanines, office fit-outs and public buildings. Consistent finish across multiple runs. Supply-only or supply and install.

New Build & Renovation

Modular balustrade systems are completely flexible and will suit any new build or renovation project. Share your drawing or project details and we’ll find the right system for you.

design your modular system

Use the Modular Balustrade Configurator

An interactive tool to design your modular balustrade — pick orientation, post style, finish, and run length, see live pricing, and receive a fully-specced PDF quote in under three minutes.

Used by self-builders, architects and main contractors who want to firm up the spec before talking to our team.

Modular Systems types

Our Recommended Modular Systems Pick Yours

Each of the systems below is a complete, modular product set designed for a specific application — built to your spec, fully matched and priced as one. Pick the one that fits your project.

Glass Modular

CIRCULAR POSTS · SATIN/MIRROR FINISH · WIRE/GLASS/PANEL INFILL

The most popular modular profile. Circular posts in satin or mirror-polished stainless, with your choice of wire, glass or perforated infill. A clean, contemporary look that suits both residential and commercial settings.

Best for staircases, balconies, new builds and residential renovation.

Vertical Wire Modular

SQUARE POSTS · SATIN/MIRROR FINISH · WIRE/GLASS/PANEL INFILL

A bolder, more architectural post profile. Square-section stainless posts suit contemporary interiors, industrial-aesthetic spaces and commercial staircases where a sharper line is the design intent.

best for commercial projects, contemporary residential, renovation and fit-out.

Vertical Bar Modular

CIRCULAR POSTS · SATIN/MIRROR FINISH · WIRE/GLASS/PANEL INFILL

The most popular modular profile. Circular posts in satin or mirror-polished stainless, with your choice of wire, glass or perforated infill. A clean, contemporary look that suits both residential and commercial settings.

Best for staircases, balconies, new builds and residential renovation.

Horizontal Wire Modular

SQUARE POSTS · SATIN/MIRROR FINISH · WIRE/GLASS/PANEL INFILL

A bolder, more architectural post profile. Square-section stainless posts suit contemporary interiors, industrial-aesthetic spaces and commercial staircases where a sharper line is the design intent.

best for commercial projects, contemporary residential, renovation and fit-out.

Round Modular

CIRCULAR POSTS · SATIN/MIRROR FINISH · WIRE/GLASS/PANEL INFILL

The most popular modular profile. Circular posts in satin or mirror-polished stainless, with your choice of wire, glass or perforated infill. A clean, contemporary look that suits both residential and commercial settings.

Best for staircases, balconies, new builds and residential renovation.

Pre-Fabricated Posts

PRE-DRILLED · CUT TO YOUR DIMENSIONS · READY TO INSTALL

Posts supplied pre-drilled and ready to install. No cutting, no tapping on site — everything arrives specified to your dimensions. The fastest route from order to finished balustrade.

Best for contractors, self-builders and refurbishment projects.
Browse Components by Category

Eight component categories.

Each card below routes to the matching category on the SWR shop. Stock levels, technical drawings and SKU detail are managed on the shop, not here.

situ9
01

Modular Components

Tubes, base fixings, wall fixings, connectors, end caps, and supports. Available in 42.4mm and 48.3mm diameters with 304 and 316 grade stainless steel.

glass_mid_post-500x500_1
02

Pre-Fabricated Posts

Posts for glass balustrade systems. Available in end, middle, and corner configurations for 42.4mm and 48.3mm handrail diameters.

Screenshot at Jul 22 12-38-23
03

Glass Spigots

Available in stainless steel and decorative finishes. Suitable for 8–21.52mm glass panels in residential and commercial projects.

pikasso-post-mid
04

Aluminium Glass Posts

Mid, end, and corner posts for 10–13.52mm glass. Durable anodised aluminium construction for stylish indoor and outdoor railing systems.

standoff-situ-1_1_1
05

Glass Adapters

Available in AISI 316 stainless steel and black finishes for 10–21.5mm glass panels.

galleryIMG-31
06

Glass Clamps

Suitable for 6–12mm glass panels. Available in stainless steel and black finishes for round tube, square post, and flat mounting applications.

galleryIMG-20
07

Wire Rope Infill

Stainless steel cables, tension kits, swage fittings, and self-assembly wire kits. Ideal for modern balustrades, decking, staircases, and balconies.

channel_to_external_grounds_1
08

Glass Channel Components

Aluminium channel components for glass balustrades, including channels, cladding, end plates, seal strips, wedges, and fixings. 

modular system specifications

Engineered to the highest standards.

Our systems are manufactured from premium stainless steel and designed for strength, durability and long-term performance. Every component is produced to the same high standards as the rest of our balustrade range, ensuring a consistent, high-quality finish across every project.

For further system information please visit our knowledge hub.

project spotlight

SWR's Milestone Installation at Addenbrookes Hospital

One of SWR’s most ambitious installations to date

Glass balustrade

24 weeks

450 glass panels

Modular systems faqs

Common questions about modular balustrades

What's the difference between our modular system and welded balustrades?

Our modular systems are connected with a high quality adhesive that removes the need for welding whilst achieving superb performance. Welded systems are bespoke fabrications, often made off-site. Modular is faster, consistent and more cost-effective for the majority of residential and commercial projects.

Yes. SWR modular posts are compatible with wire infill, glass panels and perforated panels. The infill is specified at quote stage — tell us your preference and we’ll design the system around it.

Yes. SWR modular systems are designed and tested in accordance with BS6180 and Approved Document K, covering barrier heights, load ratings and infill spacing where required. We work with you to ensure you receive the right specification to suit your project.

It depends. Modular systems are designed for installation by a competent general contractor — no welder or specialist fabricator required. It is important to understand your project in full so we can give the correct guidance on installation. We have a network of specialist installers that cover the UK.

Yes. We offer both base plate fixing and side fixing. It is important that fixings suit your substrate. Please share all the project details so we can advise you accordingly.

get a Modular Balustrade Quote

Request a Free Modular Balustrade Quote

Send us your drawings, dimensions or a rough brief and we’ll come back with a full system specification and price. No obligation, no pushy sales process.