Blackline Mastic
London
Checkatrade member since January 2026
Public liability insurance is unverified
Services
- Mastic Sealant
Customer Reviews
Write a review10 /10
Based on 2 reviews over the past 12 months
Quality of work
10
Reliability
10
Communication
10
Reviews (2)
10 Excellent Service
Posted 15 January
Blackline Mastic did a great job on my full bathroom reseal. The finish is clean, precise, and very professional. Turned up on time, worked efficiently, and left everything tidy.Verified reviewerJob location: E610 E17 4JZ
Posted 15 January
Great job on the full bathroom reseal and the mastic work between the floor and skirting boards. The finish is neat, professional, and exactly what I was hoping for. Turned up on time, worked efficiently, and left everything clean and tidy. Highly recommended.Verified reviewerJob location: E17Response from Blackline Mastic
I appreciate your feedback and thank you for your trust
Photos
Company Info
Owner
Mr Ion leahu
Sole Trader
Member since 2026
VAT Registered
No
Blackline Mastic – Professional Sealant Specialists
Blackline Mastic provides expert mastic and sealant services across the UK, with over 5 years of experience delivering clean, durable, and professional finishes.
We work on residential, commercial, and industrial projects, using high-quality, mould-resistant sealants to ensure long-lasting results on every job.
Our Services
- Bathroom & shower sealant (leak prevention & mould resistance)
- Kitchen worktops & floors
- Window & door frames (internal & external)
- Expansion joints
- Skirting boards & flooring
- External sealing for buildings and masonry
All work is completed with precision, clean lines, and attention to detail.
Why Choose Blackline Mastic?
✔ Over 5 years’ experience
✔ Reliable, punctual & professional
✔ Premium quality sealants used
✔ Clean, tidy workmanship
✔ Residential, commercial & industrial work
✔ UK-wide coverage
Get in Touch
Whether you need sealant for a new build, renovation, or repair, Blackline Mastic offers a reliable, hassle-free service you can trust.
Blackline Mastic – Quality Sealing, Done Right.
