What K Rend does

K Rend is a manufacturer of silicone through-coloured renders for the UK and Irish construction markets, operating as the building-envelope render brand of Kilwaughter Minerals Limited within the diversified Kilwaughter Group. Founded in 1939 and headquartered at Kilwaughter, Larne in Northern Ireland, the company produces a portfolio centred on proprietary silicone technology that combines water repellency with vapour permeability and biocide protection against moulds, yeasts and algae. Its product range spans hand- and machine-applied silicone renders (Silicone K1, the Silicone TC thin-coat family TC 05/10/15/30, K Mono monocouche, K1 Spray+, Silicone FT, Silicone Roughcast and Silicone Dash Receiver), complemented by Primer TC, K Lime hydraulic lime renders and mortars for heritage applications, mortars and plasters, exterior paints and coatings, and tools. Products are available in 20 standard colours with NCS colour-matching capability, and many lines carry a 30-year British Board of Agrément and National Standards Authority of Ireland accreditation plus the BSI Kitemark licence.

The company serves four primary customer segments: housebuilders (served via dedicated specifications, site registration, pre-start inspections and warranties), architects (specification support, CPD training and NBS Source listings), applicators and contractors (K Academy training and technical support), and merchants and tradespeople (distribution, bulk ordering and credit terms), with homeowners served as a secondary segment through sample requests, a colour simulator and stockist lookup. Revenue is generated through one-time sales of physical render and building-material products distributed via an authorised retailer and builder's merchant network across the UK and Ireland, supplemented by technical specification services bundled with housebuilder accounts. K Rend maintains a regional field sales force of at least 14 Area Sales Managers and Account Executives covering Scotland, Northern England, the Midlands, Southern England and South Wales, Northern Ireland, and the Republic of Ireland, and supports demand generation through earned-media features on BBC and Channel 4 property programmes.

Name

K Rend

Legal name

Kilwaughter Minerals Limited

Website

https://k-rend.co.uk

Company type

Private

Founded year

1939

Operating status

Operating

Headcount range

251–500 employees

Short description

K Rend manufactures silicone through-coloured external renders, hydraulic lime products, mortars and paints, serving UK and Irish housebuilders, architects, applicators, merchants and homeowners through an authorised builder's-merchant network and a regional sales force.

Ownership category

akta.pro rank

Headquarters

HQ city

Larne

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Render and Building Materials Sales: K Rend generates revenue through the sale of silicone renders, hydraulic lime products, mortars, plasters, paints, coatings, and tools. Products are sold through authorised distributors and merchants across UK and Ireland with pricing based on product type and quantity.
2. Technical Specification Services: Revenue generated through providing technical specification support, training, and specification services to housebuilders, architects, and applicators as part of their customer support ecosystem.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

K Rend manufactures and sells a comprehensive range of silicone through-coloured renders, hydraulic lime renders and mortars, plasters, exterior paints, and complementary tools for external wall finishing applications. The portfolio centres on the Silicone K1, Silicone TC (05/10/15/30), K Mono, K1 Spray+, Silicone FT, Silicone Roughcast and Silicone Dash Receiver ranges, supported by Primer TC and ancillary products. Products are manufactured in Northern Ireland and Ireland and sold through authorised retailers and builder's merchants across the UK and Ireland in 20 standard colours with NCS colour-matching capability.

Product overview

K Rend is a specialist render manufacturer offering a comprehensive portfolio of through-coloured render products for exterior applications. The product portfolio centers on silicone-based render systems including the Silicone K1 scraped texture range, the Silicone TC thin coat range (TC 05, TC 10, TC 15, TC 30), K Mono premium monocouche render, and K1 Spray+ for spray application. Supporting products include Primer TC, Silicone Dash Receiver, and Silicone Roughcast. The company also offers Hydraulic Lime Renders & Mortars for heritage applications, Mortars & Plasters, and Paints & Coatings for exterior finishes. Products are available in 20 standard colours with colour matching to NCS colours. The company operates as part of the Kilwaughter Group, with manufacturing in Northern Ireland and Ireland.

Differentiator

Problem solved

Functional benefit

Products and services

• Silicone K1 Through-coloured render incorporating proprietary silicone technology, suitable for hand or spray machine application. Delivers a fine scraped or roughcast finish with low maintenance, available in 20 standard colours and usable as one-coat two-pass or one-coat one-pass over a base coat. Targeted at housebuilders, applicators and contractors specifying a versatile, low-maintenance external wall render.
• Silicone TC 15 Through-coloured organic resin thin coat render in the 15-grain size, suitable for hand or machine spray application. Cement-free formula with silicone technology provides a water-repellent, low-maintenance textured finish with biocide protection. Targeted at applicators and housebuilders seeking a flexible, ready-to-use thin coat finish.
• Silicone TC 05 Through-coloured organic resin thin coat render in the 05-grain size, suitable for hand or spray application. Part of the Silicone TC range offering a water-repellent textured finish. Targeted at applicators and homeowners seeking a fine thin coat finish.
• Silicone TC 10 Through-coloured organic resin thin coat render in the 10-grain size, suitable for hand or spray application. Part of the Silicone TC range providing a water-repellent textured finish with silicone technology and biocide protection. Targeted at applicators and housebuilders specifying a mid-grain thin coat render.
• Silicone TC 30 Through-coloured organic resin thin coat render in the 30-grain size, suitable for hand or spray application. Coarsest variant in the Silicone TC range delivering a more pronounced textured finish with silicone water repellency. Targeted at applicators seeking a heavier texture profile.
• K Mono Premium monocouche through-coloured render engineered for larger projects and machine application in one coat one pass. Offers exceptional workability and market-leading setting times, enabling same-day scrape capability for faster project completion. Targeted at large-volume housebuilders and commercial applicators.
• K1 Spray+ Through-coloured silicone render optimised for spray machine application on larger projects. Delivers consistent coverage at volume with K Rend's silicone technology water repellency. Targeted at housebuilders and contractors undertaking high-volume new build developments.
• Silicone FT Through-coloured render with silicone technology available in 20 standard colours, suitable for producing a scraped texture finish. Targeted at housebuilders, applicators and homeowners seeking a fine textured render.
• Silicone Roughcast Through-coloured hand-applied render used as an alternative to dry dash, providing an attractive roughcast finish at lower cost than painted dash. Offers excellent water resistance and is ideal for coastal or high-exposure areas. Targeted at applicators and homeowners in exposed coastal or high-wear environments.
• Silicone Dash Receiver Through-coloured render applied as the background surface for dry dash or roughcast finishes, incorporating silicone technology for water resistance. Can be hand or spray applied over K Rend base coats and is available in 20 standard colours. Targeted at applicators undertaking traditional dash or roughcast finishes.
• Primer TC Ready-to-use primer quick and easy to apply by brush, roller or spray. Colour-coordinated to Silicone TC or Mineral TC topcoats and applied after base coat and before thin coat topcoat to ensure adhesion and colour consistency. Targeted at applicators using the K Rend thin coat render system.
• K Lime Hydraulic Lime Renders and Mortars Cement-free, lime-based renders and mortars offering flexibility, durability and breathability to protect and enhance heritage and traditional buildings. Targeted at heritage restoration contractors, conservation architects and owners of period properties.
• Mortars and Plasters Selection of mortar and plaster products requiring only the addition of water and mixing time, designed for use alongside K Rend render systems. Targeted at applicators, bricklayers and general builders needing compatible bedding and plastering materials.
• Paints and Coatings Attractive matt coloured exterior paints and coatings designed to complement and finish K Rend render installations. Targeted at applicators and homeowners needing colour-matched finishes for exterior surfaces.

Quantifiable outcome

• 30-year product guarantee on accredited products
• +2 more outcomes

Named customers10 records

Segments5 records

Ideal customer profiles5 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.

• Kilwaughter GroupcoreOthersK Rend is part of the Kilwaughter Group, a manufacturer of mineral-based products. The company operates as a brand within this parent organization, with headquarters at Kilwaughter Minerals Ltd and regional operations including offices in Larne, Northern Ireland and Cork, Ireland.

Scale indicators5 records

Recent moves1 record

Expansion highlights5 records

Direct peers

• Weber (Saint-Gobain): Saint-Gobain's external render and EWI brand; the largest non-independent competitor to K Rend in UK and Ireland external renders, with comparable silicone and through-coloured product lines and national housebuilder accounts.
• PermaRock: UK-focused manufacturer and supplier of external wall insulation systems and through-coloured renders, including silicone finishes. Targets the same volume housebuilder and architect specification channel as K Rend.
• Sto SE: German-origin manufacturer of external render, EWI, and through-coloured silicone/acrylic plaster systems with a significant UK presence. Directly competes for volume housebuilder and architectural specifications against K Rend's Silicone K1 and TC ranges.
• Wetherby Building Systems: UK-based supplier of external wall insulation and through-coloured render systems, including silicone finishes. Serves the same volume housebuilder and regional applicator network and competes head-to-head with K Rend on tendered specifications.
• Baumit: Austrian-based render and facade systems manufacturer with UK distribution, offering silicone and through-coloured renders plus EWI systems. Comparable product portfolio and housebuilder/applicator go-to-market model.

Broad incumbents

• Sika: Global construction chemicals group with a renders and facade systems portfolio following the Parex acquisition. Larger scale and broader product breadth make Sika an incumbent competitor in the render specification market where K Rend also competes.
• Mapei: Global construction chemicals manufacturer with a facade-finish and render systems offering relevant to UK and Irish housebuilders. Competes in the same applicator and merchant channels, albeit as part of a much wider product portfolio.
• Knauf: Global building materials group producing renders, plasters, and EWI systems alongside its core gypsum business. Overlaps with K Rend in exterior renders and shares architectural specification and housebuilder customer relationships.

Emerging players

• Alsecco (DAW Group): DAW Group's render and facade systems brand operating across Europe with selective UK presence. Offers comparable through-coloured silicone and acrylic render ranges, providing niche competition in architectural specifications.

Regional players

• JUB Group: Slovenia-headquartered manufacturer of decorative renders, facade paints, and EWI systems with Central and Eastern European strength. Comparable formulation-led silicone render technology with limited but growing UK and Ireland distribution.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/krendrenders
• Facebookfacebook.com/KRendRenders

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles20 records

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 K Rend