
Why Mastic Sealing Is Important
Mastic sealing is a vital part of any construction or refurbishment project. Proper sealant application:
- Prevents water ingress and moisture damage
- Reduces air leakage, improving energy efficiency
- Accommodates structural and thermal movement
- Enhances durability of windows, doors, and building façades
- Provides a professional and visually clean finish
At GP Contracts, we use high-performance sealants and follow industry best practice techniques to ensure each seal performs effectively for the life of the building.
Our Mastic Sealing Services in Ayrshire
We offer a comprehensive range of mastic sealing solutions tailored to your project requirements:
- Internal sealant applications – bathrooms, kitchens, wet rooms, sanitary areas, floor-to-wall junctions
- External sealant applications – façade joints, window and door perimeters, curtain walls, expansion joints
- Fire-rated sealants – compliant with building regulations
- Movement joints – accommodating thermal and structural expansion
- Cladding and precast concrete sealing – weatherproofing and structural protection
- Industrial and commercial applications – warehouses, offices, retail units
Each project is carefully assessed to ensure the correct sealant type is selected and applied to achieve a durable, high-quality finish.

Internal Mastic Sealing
Internal sealant applications require precision and attention to detail. GP Contracts delivers expert internal mastic sealing across Ayrshire for:
- Bathrooms and kitchens
- Wet rooms and shower areas
- Floor-to-wall junctions and skirting boards
- Sanitary areas in commercial and healthcare environments
- Clean, neat, and colour-matched finishes
Our team ensures that internal sealants are installed to exacting standards, providing both functionality and aesthetic appeal.
External Mastic Sealing
External sealing protects buildings from weather, structural movement, and moisture. GP Contracts provides:
- Window and door frame perimeter sealing
- Expansion and contraction joint sealing
- Curtain wall and façade sealing
- Precast concrete and cladding sealing
- Long-lasting, weather-resistant finishes suitable for Ayrshire’s climate
Our external mastic work prevents water ingress, protects structural elements, and reduces the need for costly repairs.
Serving Ayrshire & Surrounding Areas
We provide specialist mastic sealing services across Ayrshire, including:
- Ayr, Prestwick, and Troon
- Kilmarnock and Irvine
- Largs and Kilwinning
- Local commercial developments and residential projects
We work closely with developers, contractors, and property managers throughout Ayrshire, delivering efficient, high-quality sealant services for projects of all sizes.

Why Choose GP Contracts in Ayrshire?
Clients across Ayrshire rely on GP Contracts because we provide:
- Specialist expertise in mastic sealing
- Experienced and fully trained applicators
- High-quality, branded sealant materials
- Precise, neat, and consistent finishes
- Compliance with UK building and safety regulations
- Flexible scheduling to meet project deadlines
- Competitive pricing and free quotations
We understand that mastic sealing is often one of the final trades on a project, and our team works efficiently to ensure smooth handovers and professional results.
Health, Safety & Quality Assurance
Safety and quality are central to our service. GP Contracts ensures:
- Correct joint preparation and backing rod installation
- Accurate selection of sealant type for each application
- Compliance with fire and building regulations
- Clean and safe working practices
- Post-installation inspection and quality control
Every seal applied by GP Contracts in Ayrshire is built to last, performing as intended while maintaining a professional finish.

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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We were really pleased with Darren’s work and professionalism replacing the sealants in our bathroom and en suite. On time, great job and very tidy. Everything from initial enquiry to work being carried out went very smoothly. Would highly recommend.Deborah
Brilliant from start to finish. Externally sealed all our windows perfectly. Great communication throughout, friendly, clean and tidy. Wouldn't hesitate to recommend them.Rory Edwards
Marcus completed sealant installation around the house. The job was impeccable with great attention to detail.Highly recommend his work.Gillian Milne
We had GP Contracts strip and reseal our walk in shower. From first contact with Marcus to job completion, GP were great to deal with and the finished product is excellent. Highly recommendedChris Finnigan
Request a Mastic Sealing Quote in Ayrshire
If you need a reliable mastic sealing contractor in Ayrshire, GP Contracts can provide tailored solutions. From internal sanitary sealants to external façade joints or movement joints for commercial, residential, or construction projects, we deliver professional, precise, and long-lasting results.
Contact GP Contracts today to discuss your mastic sealing requirements in Ayrshire and request a free quotation.
















