Why clients choose us
Safe Trader Scheme approved specialists
Certified by Lancashire County Council and Trading Standards for quality and reliability.
Comprehensive building and roofing services
rom extensions and new builds to flat roofing and storm damage repairs, all under one roof.
Emergency plumbing available 24/7
Fast-response call-outs ensuring urgent plumbing issues are resolved with minimum disruption.

What we offer





Welcome to Diamond Seal UK Ltd
Diamond Seal UK Ltd is a trusted builder in Chorley, near Bolton, delivering professional building, plumbing, and maintenance services across the North West and throughout the UK. As part of the Safe Trader Scheme with Lancashire County Council and Trading Standards, we are committed to quality and reliability. We aim to visit within 48 hours and provide a detailed quote within a week. Our services cover damp proofing, flat and steel roofing, rubber roofing, roof repairs, conversions, cleaning, leadwork, and storm damage repairs, alongside plumbing, uPVC fitting, kitchen and bathroom installations, refurbishments, building extensions, new builds, roof windows, trusses, and industrial roofing.


Complete building, plumbing and property maintenance services
We offer a comprehensive range of services to cover every aspect of your property. From building extensions, refurbishments, and new builds to kitchen and bathroom installations, we deliver with care. As roofing specialists, we handle flat roofs, rubber and steel roofing, repairs, conversions, trusses, roof windows, cleaning, and leadwork. Our approved damp proofing protects your property long term. We also provide emergency plumbing, general repairs, and ongoing maintenance to keep your property safe and functional.
Why choose Diamond Seal UK Ltd?
-
35 years of experience: A trusted name in Chorley and beyond.
-
Fast response times: Visits within 48 hours and quotes in a week.
-
Wide-ranging expertise: From damp proofing to full property refurbishments.
-
Safe Trader Scheme approved: Part of Lancashire County Council and Trading Standards.
-
Customer-focused service: Transparent, reliable, and tailored to your needs.



