What Cromar Building Products does

Cromar Building Products is a UK-based manufacturer and distributor of professional roofing and waterproofing systems, founded in 1997 and operating from Goole. The company supplies pitched roofing products, building chemicals, adhesives, sealants, and tanking membranes to roofing contractors, builders, and merchants across the United Kingdom. Since March 3, 2025, Cromar has been a wholly-owned subsidiary of Sika Limited (the UK arm of the Swiss construction chemicals group Sika AG) and is integrated into Sika's UK distribution division, with the brand now marketed through Sika's UK website, datasheet infrastructure, and roadshow programme.

Cromar's product portfolio is organised across three primary categories — flat roof solutions, felt and membrane solutions, and pitched roof solutions — and spans multiple proprietary systems including Hydrosil® (silicone liquid roof), Acrypol+ (acrylic waterproofing), Metal-Kote® (metal roof coating), RubberCoat® (liquid rubber), PROGRP® and Flexiglass® (glass fibre roofing), a complete bitumen range, CromaSlate® (synthetic slate), and Leadax® (lead replacement). Several GRP systems carry BRoof(T4) fire performance certification, and the trademark portfolio covers all eight named systems plus core brand marks. The product architecture is built around chemistry-driven coatings and laminates rather than software or AI, with technical differentiation centred on cure time, adhesion to porous and non-porous substrates, weather resistance, and installer ergonomics.

The business model is B2B distribution-led: Cromar sells through a UK stockist network and the Sika B2B eShop on a quote-based pricing model to three primary segments — roofing contractors, builders, and merchants. Pricing is not publicly disclosed. The company maintains 101-250 employees and operates as a trade brand rather than a direct-to-consumer retailer, with the channel partner motion explicitly intended (post-acquisition) to leverage Sika's distribution scale for cross-selling sealants, adhesives, and roofing systems to existing merchant accounts.

Name

Cromar Building Products

Legal name

Cromar Building Products

Website

https://cromarbuildingproducts.com

Company type

Private

Founded year

1997

Operating status

Acquired

Headcount range

101–250 employees

Short description

Cromar Building Products is a UK manufacturer of professional roofing and waterproofing systems — including silicone, acrylic, GRP, bituminous, and lead-replacement products — serving roofing contractors, builders, and merchants through trade distribution under Sika Limited following its March 2025 acquisition.

Ownership category

akta.pro rank

Product category

Roofing and Waterproofing Products

NAICS

Asphalt Paving, Roofing, and Saturated Materials Manufacturing (32412), Roofing, Siding, and Insulation Material Merchant Wholesalers (42333)

SIC

Asphalt Paving & Roofing Materials (2950)

akta.pro primary industry

Built-Up Roofing (BUR) (IMADAFAH)

akta.pro secondary industry

Slate Roofing (IMADAFAD)

Keywords

• Roofing waterproofing products
• Flat roof membranes
• Glass fibre roofing systems
• Pitched roof accessories
• Building sealants adhesives

Headquarters

HQ city

Goole

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Roofing and Waterproofing Products: Sale of professional roofing and waterproofing products including liquid membranes, GRP systems, bituminous products, felt underlays, and pitched roof accessories to contractors, builders, and merchants.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Cromar Building Products manufactures and supplies a complete portfolio of professional roofing and waterproofing products for the UK trade market, including liquid-applied silicone and acrylic membranes, glass-reinforced polyester (GRP) roofing systems, bituminous coatings and felts, breathable and non-breather roof underlays, synthetic slate tiles, lead replacement flashings, and pitched roof accessories. Products are sold to roofing contractors, builders, and building merchants through Sika's UK distribution network and the Sika B2B eShop.

Product overview

Cromar Building Products, now a Sika Group brand, offers a complete portfolio of professional roofing and waterproofing products designed to deliver reliability, longevity, and ease of application. The product portfolio is organized across three main categories: Flat Roof solutions (including Hydrosil® silicone systems, Acrypol+ waterproof coatings, Metal-Kote® protective coatings, RubberCoat® liquid rubber, PROGRP® and Contractor G25 glass fibre systems, Flexiglass® flexible GRP systems, and comprehensive Bitumen ranges), Felt and Membrane solutions (including Bitumen Felts and Non-Breather Felts for traditional and pitched roof construction), and Pitched Roof solutions (including CromaSlate® synthetic slate tiles, Leadax® lead replacement products, Lead Free Plus aluminium flashing, and comprehensive pitched roof accessories such as trims, vents, valley systems, and eaves protection). The products are designed for contractors, builders, and merchants across the UK, covering flat and pitched roof applications with solutions ranging from emergency repairs to full system installations.

Differentiator

Problem solved

Functional benefit

Products and services

• Hydrosil® Liquid Roof System Professional-grade silicone roofing solution engineered to restore, protect, and extend the life of roof surfaces with long-lasting waterproofing performance. Includes Silicone Roof Coating, Seam Sealer & Detailer, and Heavy-Duty Reinforcement Roll. Aimed at roofing contractors and builders performing roof restoration and waterproofing.
• Acrypol+ Waterproof Roof Coating High-performance, fast-curing acrylic waterproofing solution that adheres to porous and non-porous surfaces to form a seamless, flexible waterproof membrane applicable in wet or dry conditions. Targeted at contractors requiring rapid waterproofing repairs and full roof applications.
• Metal-Kote® Protective Roof Coating Specialized protective roof coating formulated for metal-sheeted roofs, industrial units and agricultural buildings. Forms a durable weatherproof film to combat corrosion and extend the life of metal cladding.
• RubberCoat® Liquid Rubber Waterproofing System Highly flexible liquid rubber waterproofing system that forms a seamless, durable membrane with exceptional elasticity to accommodate structural movement and thermal expansion. Suitable for a wide range of roof types, gutters and complex detailing.
• PROGRP® Glass Fibre Roofing System Professional-grade glass-reinforced polyester (GRP) roofing system delivering outstanding durability, structural strength and long-term weatherproofing, with BRoof(T4) certified fire performance. Sold as a system including reinforcements, catalysts and specialist tools for trade installers.
• Contractor G25 GRP Roofing System Cost-effective GRP roofing solution designed for contractors needing fast, efficient installation. Provides strong adhesion, excellent waterproofing and a clean professional finish for a wide variety of flat roofing applications.
• Flexiglass® Flexible Glass Fibre Roofing System High-performance GRP roofing system using advanced polyester resin technology with reinforced fibreglass matting. Offers outstanding flexibility, fast cure times, a fully bonded durable finish and BRoof(T4) fire certification.
• Bitumen Range (Paints, Primers, Adhesives & Compounds) Complete range of bituminous paints, primers, adhesives and waterproofing compounds developed for traditional flat roofing, repairs and maintenance work. Provides dependable waterproofing, strong adhesion and compatibility with felt, concrete, metal and masonry surfaces.
• Bitumen Felts Time-tested bituminous felts engineered with high-quality bituminous compounds for excellent bonding, strength and weather resistance. Available as torch-on and pour-and-roll products, including underlays, capsheets, shed felts, and SBS/APP modified felts.
• Non-Breather Felts Impermeable secondary barrier membranes for pitched roofing systems. Prevent water penetration while protecting roof structures from wind-driven rain, dust and debris in traditional cold roof constructions.
• CromaSlate® Roof Covering System Modern, lightweight synthetic slate alternative to natural slate combining aesthetic appeal with advanced synthetic materials. UV-stabilised, fire retardant, and resistant to cracking, fading and weathering. Supplied with verge, ridge and hip components.
• Leadax® Lead Replacement Solutions Lead replacement flashing product marketed as the first lead alternative in the world with the same properties as traditional lead - looks like lead, dresses like lead, and is as malleable and pliable as lead. Launched in 2018 and is one of the most popular lead alternatives on the market.
• Lead Free Plus Aluminium Flashing High-performance, self-adhesive aluminium flashing serving as a lead-free alternative to traditional lead flashing. Features self-adhesive backing for quick installation, lightweight and malleable properties, and waterproof, weather-resistant construction.
• Flat Roof Trims and Detailing Accessories Extensive trim portfolio for flat roof edges, upstands, junctions, outlets and perimeter terminations. Includes raised edge trims, drip trims, simulated lead flashings, expansion joints, parapet outlets, internal and external corners, fillet trims, ridge closures and specialized detailing components.
• Pitched Roof Accessories Full suite of pitched roof accessories supporting ventilation, secure roof coverings and weather resistance. Includes dry ridge and verge systems, flashing tapes, valley troughs, vents, comb fillers and underlay support trays for fully compliant pitched roofing systems.

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• SikacoreStrategic or Co-development Partner · 3 March 2025Sika acquired Cromar Building Products on March 3, 2025 to expand its presence and product offerings in the UK roofing sector. The deal aims to enhance cross-selling opportunities and strengthen Sika's distribution channel focus in the region. Cromar Building Products is now integrated as part of Sika's distribution/roofing division in the UK.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Bauder Ltd: UK-based manufacturer of flat roof and pitched roof waterproofing systems, including bituminous, single-ply, and green roof solutions. Directly comparable as a specialist UK roofing systems brand serving contractors and merchants with comparable product breadth.
• BMI Group (Braas/Icopal): Major UK and European roofing manufacturer offering pitched roof tiles, flat roof membranes, and roofing accessories. Closely comparable in product breadth covering flat and pitched roof systems distributed through UK merchant channels.
• IKO Group: Global manufacturer of bituminous roofing membranes, shingles, and waterproofing systems with significant UK operations. Directly comparable as a producer of bituminous and asphalt-based roofing products sold through UK distribution.
• Marley Ltd (now part of BMI): Long-established UK roofing brand offering pitched roof tiles, slates, and roofing systems. Comparable as a heritage UK roofing brand targeting contractors and builders, with overlapping pitched-roof accessory portfolio.
• Permaroof UK: UK specialist in GRP (glass-reinforced polyester) roofing systems and liquid-applied waterproofing. Comparable as a UK-focused roofing systems distributor and specialist overlapping Cromar's PROGRP®/Flexiglass® and liquid membrane lines.

Broad incumbents

• SIG Roofing Supplies: UK specialist roofing merchant and distributor serving contractors and builders across the UK. Comparable as a channel competitor/distributor for roofing products, with overlapping customer base and broader portfolio reach.
• Firestone Building Products: Global manufacturer of EPDM rubber roofing membranes and roofing systems. Comparable as a larger roofing systems producer offering flat and low-slope solutions overlapping Cromar's liquid-applied and rubber roofing ranges.
• Sika AG: Swiss-headquartered global construction chemicals and roofing systems manufacturer, now Cromar's parent. Comparable as a broad roofing and waterproofing incumbent owning multiple roofing brands and serving distribution channels.
• Mapei SpA: Italian-headquartered global manufacturer of construction chemicals, adhesives, sealants, and waterproofing products. Comparable as a broad incumbent supplying roofing-adjacent waterproofing and sealing solutions through distribution.

Emerging players

• Danosa SA: Spanish/European manufacturer of bituminous membranes, waterproofing, and roofing systems with growing UK presence. Comparable as a European roofing and waterproofing producer expanding into the UK market with overlapping product categories.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/cromarproducts

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 Cromar Building Products