
Kitchen Sealing Services
At GP Contracts, we know that kitchens are one of the busiest and most heavily used spaces in any property. From daily cooking and cleaning to constant exposure to water, heat, and movement, your kitchen surfaces must be properly protected. Professional kitchen sealing plays a vital role in preventing leaks, maintaining hygiene, and preserving the lifespan of your fittings and finishes.
Whether you’re completing a new kitchen installation, refurbishing an existing space, or maintaining a commercial property, expert sealing ensures your kitchen remains watertight, hygienic, and built to last.
What Is Kitchen Sealing?
Kitchen sealing involves the application of high-performance, sanitary-grade silicone sealant around joints, edges, and fixtures to create a flexible, waterproof barrier. These sealed areas prevent water, grease, and debris from penetrating gaps between surfaces.
Common areas requiring kitchen sealing include:
- Around sinks and draining boards
- Between worktops and walls
- Splashbacks
- Hob surrounds
- Upstands
- Window sills
- Appliance edges
- Wall-to-floor junctions
Even small gaps can allow moisture to seep behind cabinets or beneath worktops, leading to hidden damage over time. Properly applied sealant protects these vulnerable areas and provides a clean, professional finish.

Why Kitchen Sealing Is Essential

Prevents Water Damage
Kitchens regularly experience water exposure from sinks, dishwashers, kettles, and cleaning routines. Without adequate sealing, water can penetrate behind cabinets and into wall cavities, causing:
- Swollen or warped worktops
- Damaged kitchen units
- Rotting timber frameworks
- Stained or deteriorated walls
- Floor damage
Professional sealing ensures these high-risk areas are protected against moisture ingress.
Reduces Mould and Bacteria Build-Up
Kitchens must meet high hygiene standards. Gaps between surfaces can trap food particles and moisture, creating the perfect environment for mould and bacteria. High-quality kitchen silicone sealant includes anti-fungal properties, helping maintain a safe and hygienic environment.

Protects Your Investment
A kitchen is a significant investment in any home or commercial property. Proper sealing preserves the condition of cabinets, worktops, tiling, and appliances, helping avoid expensive repairs or premature replacements.
Enhances Visual Finish
Clean, straight sealant lines create a polished and professional appearance. Poorly applied or ageing sealant can quickly make even a modern kitchen look untidy. Expert application ensures seamless integration with your chosen materials and design.
Sink and Draining Board Sealing
The sink is the most moisture-prone area in any kitchen. Water frequently splashes onto surrounding surfaces, and small leaks can quickly lead to cabinet damage below. Proper sealing around the sink edge and between the worktop and wall is essential for preventing hidden water ingress.
Worktop to Wall Joints
Where worktops meet tiled or painted walls, movement can occur due to temperature changes and structural settling. Flexible silicone accommodates this movement while maintaining a watertight seal.
Splashbacks and Upstands
Splashbacks protect walls from cooking splashes and moisture. Sealing the edges ensures water does not track behind tiles or panels, preventing long-term damage.
Hob and Appliance Edges
Heat, steam, and grease can compromise poorly sealed joints. Correct sealant application helps prevent debris build-up and makes cleaning easier.
Floor and Skirting Junctions
In both domestic and commercial kitchens, floor-to-wall joints require attention to stop spills from seeping beneath flooring materials.
Signs Your Kitchen Sealant Needs Replacing
Sealant naturally degrades over time. Regular inspection can help prevent small issues becoming major problems. You may need professional resealing if you notice:
- Cracked or splitting sealant
- Shrinkage causing visible gaps
- Peeling away from surfaces
- Discolouration or staining
- Mould growth
- Water pooling or leaking beneath surfaces
Replacing worn sealant promptly helps protect cabinetry and structural elements from further damage.
Our Professional Kitchen Sealing Process
At GP Contracts, we follow a structured approach to ensure high standards and long-lasting results.
Initial Assessment
We inspect the condition of existing sealant and surrounding materials, identifying areas affected by moisture or deterioration.
Removal of Old Sealant
All existing silicone is carefully removed without damaging adjacent surfaces. Proper removal is essential to ensure strong adhesion of new sealant.
Surface Preparation
Surfaces are cleaned, degreased, and fully dried. Kitchens often accumulate grease residue, so thorough preparation is critical for a durable bond.
Precision Application
We apply premium sanitary-grade silicone using specialist tools to achieve smooth, even lines. Sealant is colour-matched where required to complement worktops, tiles, or cabinetry.
Finishing and Curing Guidance
After tooling the sealant for a neat finish, we provide guidance on curing times and when the area can be safely used.
Domestic Kitchen Sealing Services
For homeowners, kitchen sealing is commonly required after:
- Installing a new kitchen
- Replacing worktops
- Fitting a new sink
- Updating splashbacks
- Addressing water leaks
- Preparing a property for sale
Even minor resealing can significantly improve both the appearance and performance of your kitchen. Professional finishing adds the final touch to any renovation.
Commercial Kitchen Sealing
Commercial kitchens operate in demanding environments with high levels of moisture, heat, and frequent cleaning. Sealant in these settings may deteriorate more quickly due to heavy usage.
We provide professional sealing services for:
- Restaurants
- Cafés
- Office kitchens
- Retail premises
- Rental properties
- Educational facilities
Our team works efficiently to minimise disruption while ensuring compliance with hygiene and safety standards.

The Risks of DIY Kitchen Sealing
While sealant products are readily available, improper application can lead to:
- Uneven, messy lines
- Weak adhesion
- Gaps that allow water penetration
- Rapid mould growth
- Frequent reapplication
Professional application ensures proper preparation, the correct product choice, and a long-lasting finish that saves time and money in the long run.
Choosing the Right Kitchen Sealant
Different kitchen materials require different sealing solutions. Key considerations include:
- Heat resistance
- Flexibility
- Anti-mould properties
- Adhesion to laminate, quartz, granite, or timber
- Colour compatibility
We use high-quality silicone designed specifically for kitchen environments, ensuring durability and performance.

How Long Does Kitchen Sealant Last?
High-performance kitchen sealant typically lasts between 5 and 10 years, depending on usage and cleaning practices. In commercial kitchens, resealing may be required more frequently due to intensive use.
Routine inspection and maintenance help identify early signs of wear before significant damage occurs.
Maintenance Tips to Extend Sealant Life
To maximise the lifespan of your kitchen sealant:
- Wipe away standing water promptly
- Use non-abrasive cleaners
- Avoid excessive use of harsh chemicals
- Ensure good ventilation
- Address minor cracks quickly
Consistent care prevents mould development and extends the life of surrounding materials.
Kitchen Sealing as Part of Renovation Projects
Kitchen sealing should never be treated as an afterthought. It plays a crucial role in protecting new installations and ensuring long-term performance.
Sealing integrates with:
- Worktop installation
- Tiling projects
- Plumbing works
- Appliance fitting
- Flooring installation
Attention to detail at this final stage ensures the entire project performs as intended.
Why Choose GP Contracts for Kitchen Sealing?
At GP Contracts, we combine practical expertise with a commitment to high-quality workmanship. Our sealing services are trusted across residential and commercial projects because we focus on:
- Precision and attention to detail
- Use of premium materials
- Clean and tidy working practices
- Reliable service delivery
- Long-lasting results
Whether you require minor resealing or professional finishing as part of a larger renovation, we deliver consistent, high-standard results tailored to your property.
Protect Your Kitchen with Professional Sealing
Your kitchen faces constant exposure to water, heat, and daily wear. Proper sealing provides essential protection against leaks, mould, and structural damage. Investing in professional kitchen sealing safeguards your property and ensures your space remains hygienic, functional, and visually appealing.
If your sealant is showing signs of deterioration or you are planning a new kitchen installation, contact GP Contracts today to ensure your kitchen is sealed to the highest standard and built to stand the test of time.
Looking for Expert Mastic Sealant Contractors?
When it comes to professional mastic sealing and all types of sealant application, GP Contracts is your reliable choice. Reach out to us today to experience the GP Contracts difference firsthand. First class application and customer satisfaction are our top priorities.
















