Whether you’re sealing bathrooms, kitchens, or tackling heavy-duty construction jobs, selecting the right sealant is essential for durability, performance, and finish. With numerous options on the market, it can be difficult to determine which sealant is truly up to the task.

In this guide, we’ve compared several of the UK’s top construction sealant brands. We’ve considered factors like bonding strength, flexibility, cure time, weather resistance, and colour options. Our recommendation? Hemway Construction All-In-One Sealant & Adhesive leads the way – and here’s why.

Hemway Construction All-In-One Sealant & Adhesive (Our Top Pick)

Hemway’s high-performance All-In-One Sealant & Adhesive delivers professional-grade results across a wide range of building applications. It works effortlessly on most surfaces including wood, plastic, metal, stone, and glass – perfect for both indoor and outdoor use.

Unlike traditional sealants, Hemway’s formula offers low shrinkage and outstanding adhesion even in wet or humid conditions. It’s also paintable, UV resistant, and has a strong initial grab, making it suitable for bonding and sealing in one product.

Key Specifications:

  • Fast Curing
  • All-Weather Use
  • Solvent-Free & Low Odour, Non toxic
  • Paintable Once Cured
  • Anti Mould and Waterproof

CT1 Sealant & Adhesive

CT1 is well-known in the trade sector for its hybrid polymer formula, designed for construction and repair work. It bonds to a range of substrates and performs well under water. However, its thicker consistency and slower cure time may not suit every project – and it comes at a premium price point.

Key Specifications:

  • Multi-Substrate Bonding
  • Cures Under Water
  • Slower Cure Time
  • Higher Cost

Everbuild Stixall Extreme Power

Everbuild Stixall is a versatile option. It boasts good initial grab and sticks to almost everything. However, it can be difficult to work with due to its high viscosity, and users often report excessive stringing during application.

Key Specifications:

  • Good Initial Grab
  • Solvent-Free
  • Strong Odour on Application
  • Thick Consistency

UniBond Sealant & Adhesive

UniBond offers a range of sealants for DIY and light trade use. While accessible and available in most retail stores, it’s generally designed for light-duty sealing rather than heavy construction applications. Not ideal where maximum strength or weather resistance is required.

Key Specifications:

  • DIY-Friendly
  • Moderate Flexibility
  • Slower Dry Time
  • Less Suitable for Heavy-Duty Use

Sika Sikaflex EBT+

A reliable name in industrial-grade adhesives, Sika’s Sikaflex EBT+ provides solid all-round performance. It adheres well to common building materials and resists vibration and weathering. However it isn’t suitable for high-clarity finishes.

Key Specifications:

  • High Bond Strength
  • Shock & Vibration Resistant
  • Paintable
  • Moderate Cure Speed

Final Verdict: Why Hemway Stands Out

When comparing across brands, Hemway’s Construction Sealant & Adhesive consistently offers superior clarity, speed, flexibility, and ease of use. Whether you're sealing a kitchen, bonding exterior panels, or fixing tiles, Hemway delivers professional-grade results without compromise.

It's the most versatile, durable, and clean-finishing option available – making it the best construction sealant right now.

By Sarah Spragg
Published: 16 Jul 2025
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