SJI Electrical provides professional consumer unit and fuse board upgrades — based in Paisley, about a mile from Crookston, and working across Crookston, wider Glasgow and Renfrewshire.
The consumer unit is the central control point of your property's electrical system. An outdated board is one of the most common reasons Crookston homeowners get in touch.
Three quick questions, then it goes straight to SJI on WhatsApp.
Crookston's building stock splits neatly across the White Cart Water. The large villas north of the water grew up around the railway station that opened in 1885, and many still carry boards fitted long before current standards existed. South of the water, the mix of concrete tenements, terraces, bungalows and flat-roofed blocks built across the 20th century brings its own range of older-style boards. Wherever your property sits, if you're not sure whether your board needs upgrading, we're happy to take a look and give you an honest answer either way.
Every upgrade follows the same structured process, from isolation to certification. It's the same whether the board is being upgraded on its own or as part of wider renovation work.

The existing supply is safely isolated and the current circuits inspected before any work begins.

The existing fuse board is removed once the inspection and plan are agreed with you.

A modern consumer unit is installed, improving circuit protection, capacity and organisation.
Also part of a full rewire →
Full system testing is carried out and certification issued once the upgrade is complete.
Most fuse board upgrade installations are completed within one day, depending on the property — and every upgrade brings genuine, practical benefits over an older board. We'll confirm timing clearly when we quote, so you know what to expect on the day, whether it's a straightforward villa swap north of the water or a flat or bungalow further south.
We ensure you understand every stage before work begins.
Send us the details of your Crookston property and what's prompting the upgrade.
Inspection of the existing installation, with findings explained clearly.
A written quotation provided before anything is agreed.
An installation date agreed that works for you.
Professional installation, followed by testing and certification.
Based in Paisley and providing fuse board upgrades across Renfrewshire and the wider Greater Glasgow area:
Most installations are completed within one day, depending on the property. We'll confirm timing when we quote.
Not necessarily bigger, but the larger villas north of the White Cart Water often carry more circuits than a typical flat, so we take that into account when we inspect and quote.
Common signs include an older-style board still fitted, electrical faults or frequent tripping, planned renovation work, or wanting improved safety protection. We can inspect and advise honestly.
The supply is safely isolated before any work begins, as it is for every upgrade. Full system testing is carried out before we hand the property back to you.
Yes. Every fuse board upgrade includes full system testing, and certification is issued once the work is complete.
We'll agree an installation date and arrangements with you in advance, so you know exactly what to expect on the day.
If your Crookston property still has an older-style fuse board, or you're preparing for renovation, contact SJI Electrical to arrange an inspection. We'll look at the existing installation, explain what we find in plain terms, and give you a written quote before anything is agreed.