SJI Electrical carries out electrical installations for shop fit-outs across Johnstone, Renfrewshire and the wider Greater Glasgow area — from a Paisley base.
We coordinate closely with shop-fitting contractors, interior designers and project managers, so the electrical work fits the wider programme rather than holding it up.
Three quick questions, then it goes straight to SJI on WhatsApp.
Johnstone's town centre carries a genuine run of independent shops and services, the kind of premises where a fit-out or refit depends on the electrics being right first time — from the shop floor through to the back of house. Whether it's a brand-new unit or a refit of an existing shop, the electrical work has to be sequenced properly alongside the rest of the fit-out, not treated as an afterthought once the shopfitters have finished.
From lighting layout to the distribution board — planned properly around your fit-out programme, whatever stage it's at.

Lighting layout planning and LED installations designed around how the shop floor is used.

Power distribution for counters, displays, POS systems and retail equipment.

Electrical supply for shopfront and internal signage, coordinated into the wider fit-out.

Circuit upgrades and distribution board installs to support the finished fit-out.
Office fit-outs →Shop fit-outs rarely involve just one trade. We slot into the wider programme rather than working in isolation, which keeps the whole job moving to plan. That means turning up when the programme says we should, working around the other trades on site, and flagging anything that affects the timeline early rather than late.
Whether you're an independent retailer fitting out a single Johnstone unit or a chain rolling out a template across multiple sites, we work to the same clear brief and timeline every time.
We ensure you understand every stage before work begins.
Tell us about your Johnstone unit and the fit-out programme.
We assess the space and confirm the full scope of electrical work.
All work is clearly scoped, priced and scheduled in advance.
Work carried out alongside the rest of your fit-out team.
Every installation is tested and certified on completion.
Yes. We work with a range of retail clients, from single independent units to multi-site chains.
Yes. We regularly coordinate with other contractors, including shop-fitters, joiners and project managers.
Yes. Lighting and power planning are core parts of our fit-out work, from the shop floor to the back of house.
Yes. All work is clearly scoped and agreed in advance, so it fits your wider fit-out programme.
Yes. Distribution board and circuit upgrades are a common part of shop fit-out work, and we'll advise honestly on what your Johnstone unit needs.
Yes. Electrical supply for shopfront and internal signage can be coordinated into the wider fit-out programme.
Yes. We work to the timeline set by your project manager or shop-fitting contractor, and flag anything that could affect it as early as possible.
Planning a new unit or a refit in Johnstone? Contact SJI Electrical to discuss the electrical scope alongside the rest of your fit-out team.