10 Best Light Grey Silicone Sealant in The UK

Last updated on 11/08/2025

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Best Choice

9.7

Exceptional

Build with Colour

Silver Grey Silicone caulk mastic Sealant RAL7035 310ml

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Why We Love It

UV Resistant for outdoors.
310ml tube capacity.
Resealable nozzle included.

Main Highlights

NEUTRAL on the tube refers to 'Neutral Cure' NOT THE COLOUR
Permanent Colour (UV Resistant for use outdoors)
310ml tube for mastic/silicone/caulking
RAL 7035 (for colour matching)
Supplied with resealable Nozzle

Mapesil AC Silicone Sealant, 310ml, Silver Grey (111)

6% Off

Why We Love It

Versatile for various applications.
Elegant silver grey finish.
Durable and mould-resistant properties.

Main Highlights

VERSATILE APPLICATION: Professional-grade silicone sealant ideal for sealing joints in bathrooms, kitchens, and other areas requiring waterproof protection
COLOUR SPECIFICATION: Silver grey (111) finish provides an elegant and modern appearance while maintaining excellent durability
QUANTITY: 310ml cartridge size, sufficient for approximately 12 metres of 5mm diameter beading
PERFORMANCE: 100% pure silicone formulation ensures excellent adhesion and flexibility for long-lasting results
TECHNICAL FEATURES: Mould-resistant properties make it particularly suitable for wet areas, with excellent resistance to temperature variations

EVT Prime Colour - Silicone (RAL Coloured Silicones) (RAL 7035 Light Grey)

Why We Love It

Vibrant colour options available.
Ultra low odour formula.
Excellent UV and weather resistance.

Main Highlights

Available in a large number of RAL Colours
Ultra low odour
Good UV resistance
Good ageing and weather resistance
Please note: the colours depicted are for guidance only. The displayed colour will depend on your monitor and browser and pearl or metallic colours cannot be shown adequately. The finished colour, therefore, may not be as shown here.

Light Grey Silicone Caulk Mastic Sealant RAL7035 310ml

Free Shipping

Why We Love It

Very easy application.
UV resistant permanent color.
310ml convenient tube size.

Main Highlights

Very Easy Application
Permanent Colour (UV Resistant for use outdoors)
310ml tube for mastic/silicone/caulking
RAL 7035 (for colour matching)
Nozzle should be attached, contact seller if packer has removed it.

Unibond Kitchen & Bathroom Anti-Mould Cartridge Concrete Grey - 274g

22% OffFree Shipping

Why We Love It

Waterproof and mould resistant.
Easy to use.
15-year durability guarantee.

Main Highlights

The Product Benefits at a Glance: Waterproof Mould resistant - contains a fungicide Bright, shiny finish Durable - 15 year guarantee Adheres to most common sanitary fixtures Resistant to conventional cleaners Colour: Grey Coverage: Approx. 11m
Easy to use
Good quality with performance

Hemway 300 ml Light Grey Hybrid Polymer Sealant | Odourless & Sanitary Anti-Mould Adhesive | Waterproof & Suitable For Use in Kitchen, Bathroom & Around Bath, Shower & Toilet | Easy To Use - 1 Pack

8% OffFree Shipping

Why We Love It

Mould resistant and waterproof sealant.
Advanced polymer and underwater curable.
Environmentally friendly and non-toxic.

Main Highlights

MOULD RESISTANT & WATERPROOF: Ideal for use in kitchens, bathrooms & areas of high humidity; anti-mould, waterproof, non-shrink & stain resistant properties are suitable for tiles, walls, baths, window frames, showers, toilets, sinks, door frames, worktops, concrete, metal, wood, most plastics & synthetic fibres.
ADVANCED HYBRID POLYMER: This sealant combines the flexibility of silicone, paintability of acrylic caulk & high grab strength of adhesives; it can be applied underwater without releasing plasticisers.
CHEMICAL & UV RESISTANT: The durable properties of the sealant provides a long lasting finish that provides resistance to fading, stains & chemicals.
EASY TO USE: Our sealant is made to be used with ease, manually with a sealant gun or caulking gun; it has a coverage of approximately 9.25 m x 3 mm bead & a quick curing time of 24-48 h depending on bead size, room temperature & humidity.
ECO FRIENDLY: Odourless, solvent-free & non-toxic; no bad smells, dangerous chemicals or sticky residue & ultra low VOC rate; safe for use around the house.

Hemway - Construction All-In-One Hybrid Polymer Sealant & Adhesive - Light Grey | Anti-Mould, Waterproof & Paintable | 300 ml

23% OffFree Shipping

Why We Love It

Mould Resistant and Waterproof.
Specially Formulated Advanced Polymer.
Environmentally Friendly and Odourless.

Main Highlights

HYBRID POLYMER TECHNOLOGY: All-in-one technology combines the flexibility of silicone, with the paintability of acrylic caulk & the high-strength seal of adhesives; ideal for construction, renovation, finishing & fixing. Hemway is a British brand and we manufacture our products to the highest standards of quality.
VERSATILE USE: Delivers a light grey finish on wood, glass, plastic, metal, PVC & concrete, plus compatible with water-based paints; an ideal floor, tile, bath, window, wall, door, shower, toilet, roof & gutter leak sealant.
ANTI-MOULD & WATERPROOF: Our unique non-shrink formula is anti-mould, waterproof, weatherproof, chemical & UV resistant, offering a durable, long-lasting finish that is resistant against fading & stains.
ECO-FRIENDLY: This vegan & cruelty-free adhesive & sealer is more environmentally safe than other silicone alternatives; a solvent-free, odourless, non-toxic & low VOC product.
QUICK CURE & HIGH COVERAGE: Covers a 6 mm bead x 9.25 mm length & fast curing within 24 hours at 23°C, with 50% R/H; provides resistance from -50°C to 120°C, making it suitable for many conditions, including high-humidity areas.

AXpower Inspirational Technology Empowering People

General Purpose Silicone C3 Grey 280ml – Pack of 3 – Waterproof Sealant for Bathrooms, Kitchens, Windows & Doors – Flexible, Durable & Mold Resistant

Why We Love It

Convenient triple pack available.
Ideal for various sealing tasks.
Resists mold and mildew growth.

Main Highlights

✔️ Pack of 3 Tubes – Convenient triple pack for multiple sealing projects
✔️ General Purpose Silicone Sealant – Ideal for bathrooms, kitchens, windows, doors, and general sealing tasks
✔️ Waterproof & Flexible – Provides a durable, waterproof seal that remains flexible over time
✔️ Mold & Mildew Resistant – Specially formulated to resist mold and mildew growth in damp environments
✔️ Easy Application – Smooth finish with excellent adhesion on most common building materials

UniBond Anti-Mould White, Waterproof Mould Protection, Long-lasting White Silicone Sealant for Kitchen & Bathroom, Powerful Bath Sealant, 1 x 274g Cartridge

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Why We Love It

Mould resistant, strong and flexible.
Ideal for humid environments.
Easy and quick application.

Main Highlights

Anti mould sealant - Once dry, the UniBond sealant forms a permanently flexible, mould resistant & waterproof sealant, ensuring strong seals and preventing mould growth.
Specially formulated - The formula of this shower sealant is ideal for warm and humid environments such as bathrooms, kitchens and other tiled areas or surfaces.
High adhesion - Create a perfect and long-lasting seal with this durable, high-strength kitchen sealant. Ensure a mould free finish with regular cleaning of the sealant.
Easy-to-use - Complete your jobs quickly: after applying with a gun, the white kitchen silicone seal is 'touch dry' within just 20 minutes and fully dry within 24 hours.
Practical Delivery - UniBond Anti-Mould White, sanitary sealant for kitchens & bathrooms preventing mould growth, silicone acetoxy formula, white, 1 x 274g Cartridge

Unika ColorSealant CS4218-AZ Acrylic Gap Filler and Sealant, Grey, 0.57 kg

Free Shipping

Why We Love It

Comes in multiple colors.
Flexes with floor movement.
Easy application design.

Main Highlights

Coloured gap filler and sealant
Flexible and acts as an expansion mechanism allowing the floor to expand and Contract
Designed for easy use
Model number: CS4218-AZ

9.0

Superb

We scanned 1521 products

We reviewed these offers relevant to the Light Grey Silicone Sealant within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Build with Colour, AIGHER, EVT, Soudal, Unibond, Hemway, AXpower Inspirational Technology Empowering People, ColorSealant, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Light Grey Silicone Sealant in the market, we considered we took a deep dive into 7606 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Silver Grey Silicone caulk mastic Sealant RAL7035 310ml. We love many things about this product by Build with Colour. What sets it apart from the competition is UV Resistant for outdoors. , 310ml tube capacity. , Resealable nozzle included.
The best value product for most shoppers and where user satisfaction is continuously the highest is Mapesil AC Silicone Sealant, 310ml, Silver Grey (111) by AIGHER based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Light Grey Silicone Sealant and the best cost-to-value ratio is Hemway - Construction All-In-One Hybrid Polymer Sealant & Adhesive - Light Grey | Anti-Mould, Waterproof & Paintable | 300 mlat Hemway with a 23% discount.
Our list of the best Light Grey Silicone Sealant is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Light Grey Silicone Sealant in The UK

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We scanned 1521 products

We concluded that: