Award-Winning Contractors You Can Trust
We are an award-winning contractor and pride ourselves on our commitment to provide a professional and speedy service, whilst achieving the highest quality of work. Our aim is to meet and exceed our client’s expectations at all times.
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Small Gaps. Big Problems.
Damaged Sealant Can Lead to Serious Property Issues
Over time, sealants naturally deteriorate. Cracks, shrinkage and mould growth may seem minor — but they can quickly cause expensive and disruptive damage if left untreated.
- Water Damage – Moisture can seep behind tiles, walls and flooring.
- Mould & Hygiene Risks – Old silicone becomes a breeding ground for bacteria.
- Heat Loss & Drafts – Poorly sealed windows and doors reduce energy efficiency.
- Costly Structural Repairs – Neglected joints can lead to major internal damage.
Professional sealing now prevents expensive repairs later.
Complete Sealing Solutions
Our Professional Mastic Services
We provide specialist internal and external sealant services for homeowners, developers and commercial clients across Scotland.
Bathroom Sealing
Precise silicone application for baths, showers, sinks and wet areas. We remove failed sealant and apply high-quality anti-mould solutions for long-lasting protection.
Kitchen Sealing
Hygienic, durable sealing around worktops, splashbacks and sinks to prevent moisture damage and maintain a clean finish.
Windows & Doors
Internal and external frame sealing to eliminate drafts, improve insulation and stop water ingress.
External & Commercial Mastic
Full mastic works packages including joint sealing for new builds, refurbishments and commercial properties.
Experience. Precision. Reliability.
Trusted Across Scotland for Professional Sealant Application
With decades of experience, GP Contracts has built a reputation for delivering dependable, high-standard mastic sealing services.
- Skilled & trained sealant specialists
- Premium sanitary-grade & weatherproof sealants
- Clean, professional workmanship
- Minimal disruption to your home or site
- Fully insured and safety compliant
We take pride in delivering results that not only look professional — but perform long-term.
Ready to Get Started?
Request Your Quote Today
Protect your home or commercial property with professional mastic sealing from experienced specialists. Speak to our team today or complete the form for a fast, no-obligation quote.
Simple & Stress-Free Process
Professional Sealing Made Easy
We make the process straightforward and efficient from start to finish.
Step 1 – Free Consultation
Tell us about your property or project requirements.
Step 2 – Assessment & Recommendation
We inspect joints and recommend the most suitable sealant solution.
Step 3 – Expert Application
Old or damaged sealant is removed and professionally replaced.
Step 4 – Final Inspection
We ensure a flawless, watertight and durable finish.
Proven Workmanship
Real Projects. Professional Results.
We’ve successfully completed sealing projects for:
- Residential properties
- Hotels & restaurants
- House builders & developers
- Commercial premises
Our before-and-after results demonstrate the quality, precision and durability of our work.
Built to Last
Long-Lasting Professional Sealing Guaranteed
We use high-performance sealants from trusted UK manufacturers to ensure flexibility, durability and superior protection.
Our work is carried out to industry standards and designed to withstand daily use and Scotland’s changing weather conditions.
You can trust GP Contracts to deliver reliable results that stand the test of time.
A: Professionally applied silicone can last many years depending on environment and maintenance.
A: Yes, we deliver full internal and external mastic packages for commercial and development projects.
A: Most residential jobs are completed within a single day.
A: We use high-quality sanitary and weatherproof sealants from trusted UK manufacturers.
Professional. Reliable. Proven.
Trusted Mastic Sealing Specialists in Scotland
From residential bathrooms to large commercial projects, we deliver high-performance sealant solutions designed to last. Speak to our experienced team today and secure expert protection for your property.
Unit D7, Glenwood Business Park, 70 Glenwood Place Glasgow G45 9UH
info@gpcontracts.co.uk
0141 370 6600
© 2026 G.P.Contracts (Scotland) Ltd | Mastic Joint Sealing in Glasgow & Edinburgh