Rear extension and orangery on a period brick house at golden hour, with the traditional rear wall replaced by floor-to-ceiling minimal-frame sliding doors flush with a stone terrace

Extensions, orangeries & renovations

Sliding doors for extensions, orangeries and renovations.

MFP 25, MFP 20, MFP18-H30, Vitrocsa V32 and 3001, and Solarlux Ecoline S systems, specified for extensions and renovation projects: sightlines from 18 mm, flush thresholds, installed by our own team across London and the South East.

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01Why specify with us

Four specific reasons, each one provable.

Sightlines from 18 mm

MFP18-H30 and Vitrocsa 3001 show just 18 mm of aluminium at the interlock — the slimmest sightline available on any system we install.

A system for every scale

From 6 m² panels on MFP18-H30 and Vitrocsa 3001 to 16 m² on MFP 25, with concealed frames, corner and pocket options across the six systems.

One team, survey to handover

We survey, specify and install with our own fitters. Flush, Part M-compliant thresholds and full project management as standard.

Published figures, nothing added

Every sightline, U-value and panel size on this page is the manufacturer's published specification. No marketing numbers.

02The systems in practice

Details, openings and architectural applications.

Cedar-clad extension, MFP18, opening onto a raised deck.

Single-storey cedar-clad extension with two floor-to-ceiling black-framed sliding glass doors opening onto a raised timber deck in bright sunlight — Cedar-clad extension, MFP18, opening onto a raised deck.

Restored living room, three panels to the deck, MFP 20/25.

Interior of a restored room looking out through three-panel black-framed sliding glass doors onto a wooden deck with topiary trees in pots — Restored living room, three panels to the deck, MFP 20/25.

Gym room to patio, flush threshold throughout, MFP 20/25.

Interior of a minimalist room looking out through floor-to-ceiling minimal-frame sliding glass doors onto a sunny stone-paved garden patio — Gym room to patio, flush threshold throughout, MFP 20/25.

Garden room with a skylight above the door head, Vitrocsa.

Interior looking out through floor-to-ceiling minimal-frame sliding glass doors with an integrated glass skylight above, toward a stepped garden — Garden room with a skylight above the door head, Vitrocsa.

03Project evidence

Single-storey rear extension. London. Install day.

A pitched-slate rear extension where the full width of the new opening was given to a minimal-frame sliding system. We specified the MFP 20/25 range, surveying the floor build-up before the builders poured so the track could sit flush with the finished floor inside and out.

Our own installation team fitted the run while the extension was still on site, coordinating with the builder on drainage and threshold levels, and handed over with a full demonstration of the sliding action and locking before the garden was landscaped.

MFP 20/25Rear extensionFlush thresholdOur installers

View more completed projects

Single-storey rear extension with a pitched slate roof and wide multi-panel floor-to-ceiling sliding glass doors, viewed from the garden during installation

04Questions answered

Specifications, process, lead times and pricing.

System	Sightline	Max panel	Glazing	Typical Uw
MFP 25	25 mm	16 m²	Up to 56 mm	≥ 0.9 W/m²K
MFP 20	20 mm	7.5 m²	26–30 mm double	1.3 W/m²K
MFP18-H30	18 mm	6 m²	28 mm double	1.3 W/m²K
Vitrocsa V32	23 mm	12 m²	32 mm double	Per configuration
Vitrocsa 3001	18 mm	6 m²	26 mm double	Per configuration
Solarlux Ecoline S	55 mm	6.75 m²	28 mm double	1.4 W/m²K

Enquiry

Send your details and, if you have them, drawings or photos. We review the opening and come back with an indicative budget.

Site survey

We measure the structural opening, floor build-up and drainage, and confirm which systems the dimensions actually allow.

Specification & quote

A written specification with the published figures for your system, glazing and configuration, and a fixed quotation.

Manufacture

Your system is made to order. Indicatively 10 to 16 weeks from approved drawings, depending on system and glazing; confirmed at quote stage.

Installation & handover

Installed by our own fitters, threshold set flush, full demonstration of sliding action and locking at handover.

What does it cost?

Minimal-frame systems for extensions and orangeries sit above standard residential sliding doors. The main drivers are opening size and panel count, double versus triple glazing, and corner, pocket and motorisation options.

Read the cost guide

How long does it take?

Indicatively 10 to 16 weeks from approved drawings to installation, depending on the system and glazing. We confirm the programme for your project at quotation stage.

Read the technical guide

05Enquiry

Tell us about your project.

Send the basics and a line or two about the extension, orangery or renovation. A drawing or photo helps if you have one.

We review your details and reply to talk through the system options.
You get an indicative budget before anything is measured.
A site survey and fixed quotation follow if you want to proceed.

Or call us on 0207 550 6550