Skills
- General Plumbing
- Radiator Installation
- Water Supply Pipe Repairs
- Water Leak Detection
- Shower Installation
- Plumbing Repairs
- Water Mains Specialist (Pipe Replacement, Moling and Lead Pipes)
- Water Pumps Installation
Services
Customer Reviews
Write a review10 /10
Based on 12 reviews over the past 12 months
Quality of work
10
Reliability
10
Communication
10
Reviews (82)
10 Water Leak Detection
Posted 13 June
Fixing overflowing water cylinder
Professional service. Despite awkward access, persevered to fix the issue. Very amicable and interesting guy too! Would definitely use again.Verified reviewerJob location: G11RStephen R10 Blocked Baths
Posted 27 March
baith back up and pressure low in taps
excellent work and service , solved my very troublesome issue with my bath block and low water pressure in pipe ..knows what he is doing and has tremendous knowledge and skill . highly recommended .Verified reviewerJob location: PA2RKartik T10 General Plumbing
Posted 26 February
Boiler
Couldn’t recommend John enough - really friendly service and work completed to a high standard with everything explained throughout.Verified reviewerJob location: G1210 Shower Installation
Posted 21 February
fitted new shower and other joinery jobs
john is very reliable ,excellent work! I have had a few jobs done so far and will have more planned for the future. Highly recommendedJob location: G12RTracy R10 Pipe Fitter
Posted 19 February
Excellent plumbing work
I’m delighted with John’s work. He replaced valves and a section of hose following a problem with the water supply to a washing machine and dishwasher. His communication was clear and quick. He turned up on time and completed the job to a high standard. Highly recommended!Job location: G11RGill L10 General Plumbing
Posted 10 December 2025
Very blocked drain & toilet flushes
Prompt coms & very reliable. Really happy with work carried out and for the advice we received. Also took care to ask questions to understand the problem as best as possible. We will definitely be booking future work with John again.Verified reviewerJob location: G12RAnna K
Photos
Company Info
Owner
Mr John Sweeney
Ltd Company
6 years on Checkatrade
VAT Registered
No
CSI Glasgow Ltd provides a professional, quality and safety focused service to customers in both the commercial and domestic sectors and have been operational since 2008. Our management have in excess of twenty five years’ experience managing the construction process across various sectors with a proactive solutions driven approach to customer requirements.
The services provided by CSI Glasgow Ltd to both Commercial and Domestic customers include:-
- Bath room & Kitchen Upgrades
- General Plumbing Installation, Servicing, Repair and maintenance.
- Gas Installation, Servicing and Repair.
- Landlord safety inspections.
Accreditations and awards
This trade passed up to 12 Checkatrade vetting checks
Member since January 2020
Individual checks
Identification
Proof of address
Financial
Qualifications and accreditations
County court judgement
Open source media
Business checks
Customer Reviews
Company trading history
Company duplication
County court judgement
Enhanced business check
Director checks