Subframes UK EntityMap

Subframes UK is the largest supplier of welded and mechanically joined cavity closers in the UK. The company manufactures products that seal the cavity between brickwork and blockwork at structural openings such as windows and doors, providing thermal insulation, damp protection, and compliance with UK Building Regulations.

Subframes UK operates from a 30,000 sq ft factory at Saw Pit Industrial Estate, Tibshelf, Derbyshire (DE55 5NH). Manufacturing is conducted in-house, allowing the company to control quality and turn around custom orders to tight construction programme deadlines.

The company serves builders, construction companies, window and door manufacturers, FENSA-registered installers, architects, specifiers, property developers, and refurbishment contractors. Its customers range from small local builders to large national housebuilders working on new-build residential and commercial projects.

Subframes UK offers daily nationwide delivery using its own fleet of unmarked vehicles. This owned fleet gives the company control over delivery reliability and scheduling, which is particularly important on construction sites where materials are needed to programme.

The company holds BBA certification for its non-fire profile products and is registered as a Constructionline-certified supplier. It is also a member of the East Midlands Chamber of Commerce.

Subframes UK is an approved fabricator for the Cavalok (Eurocell) and Dacatie (Quantum Profile Systems) ranges, and an authorised distributor for Kingspan Kooltherm, Timloc, and Titon Vents products.

Beyond standard cavity closers, Subframes UK offers bespoke fabrication services for non-standard openings including circular, arched, oval, and other bespoke opening shapes.

Fire-rated cavity closers are available from Subframes UK in 30-minute and 60-minute ratings, meeting the requirements of Approved Document B (Fire Safety) of the Building Regulations.

Subframes UK supplies insulated cavity closers across the full standard cavity width range from 50mm to 300mm. Products are available in 2-sided, 3-sided, and 4-sided configurations, with or without vented heads.

Products supplied by Subframes UK achieve a minimum thermal resistance of 0.45 m2K/W and Kingspan Kooltherm options exceed Part L requirements.

As an in-house manufacturer, Subframes UK can fabricate non-standard cavity closers for circular, arched, oval, and other bespoke opening shapes, delivered nationwide daily.

Fire-rated cavity closers from Subframes UK are available in 30-minute and 60-minute fire integrity ratings to satisfy Approved Document B of the Building Regulations.

Fire-rated options include the Cavalok FlameBlok (one-hour integrity rating) and the Dacatie range paired with the Dacasock fire sock.

Specifiers can obtain fire-rated and thermally compliant standard closers from Subframes UK in a single order, simplifying procurement on schemes where both Part L and Part B compliance must be demonstrated.

Subframes UK operates its own fleet of unmarked delivery vehicles and offers daily nationwide delivery to construction sites, merchant yards, and fabrication facilities across the UK.

The daily delivery service is positioned as a key differentiator for site-based customers where programme delays caused by late materials carry a cost.

Delivery is available across the whole of the United Kingdom from the company's manufacturing base in Tibshelf, Derbyshire.

Jayne Ryde is Managing Director of Subframes UK Ltd, the UK's largest supplier of cavity closers, based in Tibshelf, Derbyshire.

Adam Ryde is Operations Director at Subframes UK Ltd, responsible for manufacturing operations at the company's 30,000 sq ft Derbyshire facility.

Simon Bingham is Head of Commercial Operations at Subframes UK, overseeing the company's commercial relationships and sales office.

Builders and main contractors are the primary customer group for Subframes UK, purchasing cavity closers to comply with Part L and Part B of the Building Regulations.

Builders typically need consistent supply across multiple plots, reliable programme-aligned delivery, and a range covering different cavity widths and fire ratings from a single supplier.

Window and door manufacturers source cavity closers from Subframes UK to include alongside their products, providing a complete supply to their installer customers.

As an approved Cavalok and Dacatie fabricator, Subframes UK can supply branded products that window manufacturers may specify alongside their own frames.

Architects and specifiers turn to Subframes UK when a project requires non-standard cavity closer configurations for circular, arched, or oval openings.

Specifiers can source thermally certified and fire-rated profiles from Subframes UK to demonstrate compliance with Part L and Part B within a single specification.

Cavalok is a PVC-U cavity closer range by Eurocell. Subframes UK is an approved fabricator, supplying standard profiles (50-300mm) and the FlameBlok fire-rated variant with one-hour fire integrity.

The Cavalok range includes structural door packs. BBA certification covers the non-fire Cavalok profiles supplied by Subframes UK.

Dacatie is an insulated cavity closer range from Quantum Profile Systems. Subframes UK fabricates Dacatie closers across standard cavity widths with optional Dacasock fire protection.

The Dacasock integrates fire protection into the Dacatie profile, providing fire resistance at window and door openings without a separate fire-rated product.

Kingspan Kooltherm cavity closers use a rigid thermoset insulation core within a uPVC profile, providing thermal resistance values that exceed Part L. Available 50-150mm.

Kooltherm closers suit projects requiring higher than minimum thermal performance, including high-specification new build where thermal bridging targets are stringent.

The Trade Closer is Subframes UK's own cavity closer product, a cost-effective option for refurbishment and renovation projects where replacement closers are needed.

Available directly from Subframes UK, included in the daily nationwide delivery service alongside the Cavalok, Dacatie, Kingspan, and Timloc ranges.

Subframes UK's non-fire profile cavity closers carry BBA (British Board of Agrement) certification, widely recognised by building control bodies and specifiers as confirmation that a product meets the relevant technical requirements for use in UK construction.

Subframes UK is a Constructionline-registered supplier, confirming it meets the pre-qualification standards required by main contractors and public sector construction clients.