Name

Koster Aquatecnic Limited

Website

https://kosteruk.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

1–10 employees

Short description

KÖSTER UK is the UK sales arm of the German KÖSTER Group, supplying mineral waterproofing slurries, TPO membranes, injection resins, restoration plasters, and coatings to construction contractors and specifiers.

Ownership category

akta.pro rank

Product category

Construction Waterproofing Products and Systems

NAICS

Asphalt Paving, Roofing, and Saturated Materials Manufacturing (32412)

SIC

Adhesives & Sealants (2891), Concrete Products, Except Block & Brick (3272)

akta.pro primary industry

Waterproofing Membranes & Systems (Liquid-Applied & Sheet) (IMADAOAC)

akta.pro secondary industries

Roofing Systems & Waterproofing (Membranes, Shingles, TPO/EPDM, Liquid-Applied) (IMAFAMAA), Concrete Repair, Crack Injection & Grouts (IMADAOAD), Concrete Repair, Sealing & Waterproofing (Coatings/Membranes) (IMAIAKAK)

Keywords

• Construction waterproofing systems
• TPO roofing membranes
• Crack injection resins
• Concrete repair mortars
• Masonry restoration plasters

Headquarters

HQ city

Dumfries

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Technology or R&D, Marketing or Sales, Personnel, Operations

Revenue model

1. Waterproofing Products and Systems Sales: Sale of waterproofing materials including mineral coatings, TPO membranes, injection resins, joint sealants, repair mortars, and accessories to construction professionals. Products are sold directly through the company website and likely through distribution channels for the UK market.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Koster Aquatecnic Limited (KÖSTER UK) supplies and distributes KÖSTER-branded construction waterproofing and chemical repair products to UK construction professionals. Its portfolio includes mineral waterproofing slurries, TPO roofing membranes, crack injection resins, epoxy coatings, joint sealants, concrete repair mortars, restoration plasters, and accessories used as integrated systems for basements, swimming pools, roofs, bridges, parking decks, and historic building restoration.

Product overview

KÖSTER (Koster Aquatecnic Limited) is a construction waterproofing products company offering a comprehensive system of waterproofing solutions for construction professionals. The product portfolio includes mineral waterproofing systems (KÖSTER NB 1 Grey, KÖSTER NB 1 Flex, KÖSTER NB 4000), crack injection and repair products (KÖSTER KB-Pox IN, KÖSTER 2 IN 1, KÖSTER PUR Gel), horizontal barrier systems for rising damp (KÖSTER Crisin 76, KÖSTER Suction Angle, KÖSTER Capillary Rods), TPO roofing and waterproofing membranes (KÖSTER TPO in various thicknesses including Pro and Aqua variants), concrete repair and protection (KÖSTER Repair Mortar R4, KÖSTER Repair Mortar NC, KÖSTER Z 1/Z 2), floor coatings and parking garage systems (KÖSTER CT 121/CT 221 OS 8 System, KÖSTER CT 225 Bridge Deck Coating), joint sealants (KÖSTER Joint Sealant FS-V), restoration plasters and paints (KÖSTER Restoration Plasters, KÖSTER Fine Plaster, KÖSTER Renovation Paint), and associated accessories (primers, quartz sands, tools). The products are designed to work together as integrated systems for applications including basements, swimming pools, roofs, bridges, parking decks, and historic building restoration.

Differentiator

Problem solved

Functional benefit

Brands

• KÖSTER TPO: TPO roofing membranes including Pro 1.8, TPO 2.0 U, and related products for professional roof waterproofing applications
• KÖSTER NB
• KÖSTER Injection Systems
• KÖSTER Restoration Systems

Products and services

• KÖSTER NB 1 Grey Mineral Waterproofing Slurry Mineral waterproofing slurry with excellent pressure and abrasion resistance and chemical/sulphate resistance, used for positive and negative side waterproofing of below-grade structures and potable water applications.
• KÖSTER NB 1 Flex Admixture Ready-mixed liquid latex admixture for KÖSTER NB sealing slurries that improves adhesion and prevents premature drying.
• KÖSTER Crisin 76 Pressureless Injection System Very thin fluid resin injected pressurelessly into masonry capillaries to permanently stop rising damp and create a hydrophobizing horizontal barrier in walls.
• KÖSTER KB-Pox IN Epoxy Injection Resin Solvent-free, 2-component, low-viscosity epoxy injection resin that seals and bridges cracks in structural concrete, stone, masonry and metal to restore structural integrity.
• KÖSTER TPO Roofing Membranes Thermoplastic polyolefin (TPO) roofing membranes in multiple thicknesses (1.2-2.0 mm) and variants (FR, SK self-adhesive, F fleece-backed) for flat and low-slope industrial and commercial roofs, available as Pro, Pro 1.8, TPO 2.0 U, and TPO Aqua (pool/water feature) versions.
• KÖSTER TPO Pro Roofing Membrane Specialized TPO membrane for freely weathered industrial roofs in lightweight construction, positioned for high sustainability and professional use.
• KÖSTER CT 121 / CT 221 OS 8 Parking Deck System Two-component solvent-free epoxy primer and mechanically resistant top coat system for parking garages and trafficked surfaces, certified to DIN EN 1504-2, DIN V 18026, and DIN EN 13813 (OS 8).
• KÖSTER CT 225 Bridge Deck Coating Solvent-free priming and coating epoxy resin for concrete road sections, bridge decks, and civil engineering structures; compatible with mastic asphalt overlays per ZTV-ING.
• KÖSTER Repair Mortar R4 EN 1504-3 Class R4 concrete repair mortar for statically relevant repairs with layer thicknesses up to 50 mm.
• KÖSTER Repair Mortar NC Fiber-reinforced repair mortar for large reprofiling and repair works with high chemical and mechanical resistance; also used as substrate preparation for corrosion protection.
• KÖSTER Joint Sealant FS-V Formstable 2-component polysulfide joint sealant with high resistance to mechanical stresses, water, sea water, salt solutions, petroleum and mineral oils; rot and root resistant.
• KÖSTER Restoration Plasters System Breathable restoration plasters available in grey, white, fast, and light variants for masonry restoration, moisture damage repair, and historic building refurbishment.
• KÖSTER NB 4000 Crack-Bridging Waterproofing Crack-bridging waterproofing material that resists foot traffic, can be covered with tiles, and bonds to damp substrates — used in wet rooms and below-grade applications.
• KÖSTER 2 IN 1 Injection Material Injection material for both crack injection and construction joint waterproofing applications.
• KÖSTER PUR Gel Polyurethane Injection Polyurethane injection gel used to stop running water and create temporary waterproofing barriers during construction or repair.
• KÖSTER Z 1 / Z 2 Anti-Corrosion Slurries Polymer-modified mineral slurries for anti-corrosion protection of steel reinforcement, with Z2 pigmented red for visual control of application.
• KÖSTER TPO Aqua Pool Membrane TPO membrane variant engineered for waterproofing swimming pools and water features.
• KÖSTER Fine Plaster and Renovation Paint System Finely textured hydrophobic thin-layer plaster plus diffusion-open matt silicone resin renovation paint, designed for smooth, water-repellent decorative finishes over restoration plasters.

Quantifiable outcome

• KÖSTER NB 1 Grey is approved by building authorities and tested according to potable water guidelines
• +2 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• KÖSTER GroupflagshipStrategic or Co-development PartnerKÖSTER UK operates as the UK subsidiary of the KÖSTER Group, a German-based international company specializing in construction waterproofing. The Group provides global brand consistency, R&D capabilities, and shared technical expertise across all regional operations.

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Carlisle Construction Materials: Major manufacturer of single-ply roofing membranes (EPDM, TPO) with UK distribution. Directly competes with KÖSTER's TPO membrane range on commercial and industrial flat-roof projects.
• Fosroc: UK-focused construction chemicals specialist offering waterproofing, concrete repair, joint sealants, and protective coatings. Closely aligned product set and customer base to KÖSTER UK, particularly in commercial, infrastructure, and repair segments.
• Tremco (Tremco CPG UK): UK provider of waterproofing membranes, joint sealants, and roofing systems. Directly competes with KÖSTER's TPO membrane and joint sealant lines for commercial and infrastructure projects.
• GCP Applied Technologies: Specialist in construction waterproofing, including Preprufe and Bituthane membranes. Direct competitor in below-grade and structural waterproofing alongside KÖSTER's mineral and TPO systems.

Broad incumbents

• Mapei UK: Italian-headquartered construction chemicals giant with a deep UK presence in waterproofing, concrete repair mortars, and façade restoration. Competes head-to-head with KÖSTER on basement waterproofing, rising damp, and historic restoration projects.
• Sika AG: Swiss global construction chemicals leader with a comprehensive waterproofing, sealing, and concrete repair portfolio. Direct overlap with KÖSTER UK across TPO/PVC membranes, joint sealants, injection systems, and mineral waterproofing, serving the same UK contractor and specifier base.
• BASF Master Builders Solutions UK: Division of BASF providing waterproofing, concrete repair, and injection resins globally. Strong overlap with KÖSTER's mineral waterproofing and crack injection portfolios, serving commercial and infrastructure customers in the UK.
• Bostik (Arkema): Global adhesives and sealants business of Arkema with waterproofing membranes, tile adhesives, and bathroom waterproofing systems. Overlaps with KÖSTER UK's BD tile adhesive, joint sealants, and wet room waterproofing products.
• Saint-Gobain Weber: Saint-Gobain's façade, rendering, and waterproofing arm in the UK. Competes with KÖSTER's façade protection, restoration plaster, and bathroom waterproofing systems in residential and commercial segments.

Others

• RPM International (Tremco, Dryvit, Stonhard):

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/koster-aquatecnic-ltd

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Koster Aquatecnic Limited