LEKA roof review

The LEKA roof is a tiled warm roof that replaces the glass or polycarbonate roof on an existing conservatory. What sets it apart is the material. Where Guardian, SupaLite, Equinox and Ultraframe use aluminium frames (some with timber), LEKA’s ring beam, rafters and ridge are pultruded glass-reinforced plastic (GRP), a fibreglass composite. LEKA says that means the structure cannot rot or corrode and avoids the cold bridging you can get through aluminium.

Outside it looks like any other lightweight tiled roof. Inside you get insulated boards and a plaster skim.

Who makes the LEKA roof?

Leka Systems Limited, company number 09504332, was incorporated on 23 March 2015 and has its registered office on Cathedral Road, Cardiff. Since 21 August 2024 it has been owned by Leka Systems Holdings Ltd, which was incorporated in July 2024 and is more than 75% held by Rhys Owen Hoddinott. Earlier people with significant control included Pullumb Leka (to 2018), and Heidi Sachs and David Burles (to 2024). A further company, Leka Systems FRCSE Limited, was incorporated on 21 September 2026.

LEKA says it uses “several UK manufacturing partners” and has a show site at the NSBRC in Swindon. It calls itself the “UK’s Leading Lightweight Tiled Roof”, claims more than 10,000 installations and holds GB patent 2538540. It also makes an orangery roof, Xi modular extensions, garden rooms and carports. The installation and network figures are LEKA’s own and have not been independently verified.

How a LEKA roof is built

LEKA’s published description and installer guide set out the build:

• GRP ring beam, rafters and ridge, with the GRP complying with BS EN 13706.
• A rigid PIR insulation core (an EPS “ECO” option is also offered). The installer guide specifies 130mm Celotex dropped in from above, with every joint foamed and taped “to create a solid vapour seal”.
• LEKA external boards, which replace the structural plywood used by other systems, under a breathable membrane and tiles.
• A 15mm gap to LEKA insulated internal boards (or 12.5mm plasterboard), then a plaster skim.

The GRP ring beam sits straight on the window frames with no timber packers and is fixed up through the frame heads with 132mm screws. Tie bars go in before any extra weight is added. LEKA says the roof usually arrives on the day the old roof comes off, the job takes 2 to 3 days including removal, and it calls back 2 to 3 months later to check.

One point is inconsistent. LEKA’s homepage says the roof weighs “around 10-12% of a traditional glass conservatory roof”, while its installer guide says it is of “similar weight, or lighter than a glass roof”. We would rely on the installer guide. Third-party comparison sites put it at about 34 kg/m².

LEKA roof specifications

Specification	LEKA warm roof
U-value (maker’s figure)	From 0.10 W/m²K depending on specification. Other sources quote 0.12 or 0.15
Weight	Not published by LEKA. About 34 kg/m² according to third-party sites
Frame	GRP (glass-reinforced plastic); no aluminium, steel or timber
Tile finishes	Tapco Slate, Britmet LiteSlate, Metrotile shingle, Britmet tile, composite slate or lightweight shingle
Colours	“Several colours to choose from” (not listed on LEKA’s site)
Glazed options	LEKA Skylite glazed section, tailored to areas of the roof
Ceiling	LEKA insulated internal boards or plasterboard, skim plastered
Certification	MFA Building Control type approval with a certificate for each installation; GB patent 2538540; GRP to BS EN 13706; BBA-approved insulation products (per LEKA); JHAI approved (per one installer)
Guarantee	40-year LEKA component warranty and 40-year tile warranty; products not supplied by LEKA are excluded
Time on site	2 to 3 days including removal (LEKA)

Our guide to conservatory roof U-values explains what the difference between 0.10 and 0.15 means in practice.

LEKA roof cost in 2026

LEKA does not publish prices and we found no LEKA-specific price from a third party. The nearest benchmarks are ExpertSure’s figure for any tiled roof on a standard 4m x 4m Victorian, £8,000 to £12,000 (July 2026), and our researched range for tiled roofs on a medium conservatory, £7,400 to £12,100 fitted, typically about £9,600. See our tiled roof cost guide. LEKA also makes an orangery-style roof with a flat perimeter and a glass lantern; see orangery conversions if that appeals.

Who sells and fits LEKA roofs?

LEKA trains and approves installers through its “LEKA Network”, which it says has more than 350 trained installers (another LEKA page says 300+). That would make it one of the larger networks, but the figure is LEKA’s claim.

Building control works slightly differently from some rivals. LEKA holds a type approval from MFA Building Control, a registered building control approver, and says “every installation gets a building control certificate” after “a few inspections”. One LEKA page describes this in a way that could be read as the roof being exempt from building control. It is not: LEKA’s own FAQ says a change from polycarbonate or glass to a tiled roof requires “building control involvement, approval and certification”, and MFA provides that in place of the council. Make sure the certificate is in your name at the end. Our building regulations guide explains the process.

LEKA roof problems and reviews

We found no Trustpilot profile for Leka Systems, and our research did not reach any owner forum reports, so there is little independent review evidence either way. People do search for “LEKA roof problems”, but we cannot point to a documented pattern of faults.

The drawbacks we can document:

• LEKA publishes no kg/m² weight, and its two weight claims do not match.
• The 40-year warranty excludes products in the roof that LEKA did not supply, so ask which parts of your roof are covered. Our guide to roof guarantees explains the layers of cover.
• The U-value, install count and network size are LEKA’s own figures.

LEKA vs Guardian and SupaLite

	LEKA	Guardian	SupaLite
Frame material	GRP	Aluminium	Aluminium with timber battens
U-value (maker)	From 0.10	0.15 (England)	0.15 (0.12 option)
Weight	About 34 kg/m² (third party)	About 55 kg/m² (third party)	Under 46 kg/m²
Guarantee	40-year components	10 + 10 years, insurance-backed	10 years (product page)
Building control route	MFA type approval	LABC approved	Stroma approval
Installers	350+ (LEKA claim)	About 70 (ExpertSure)	About 30 (ExpertSure)

Read Guardian vs LEKA and LEKA vs SupaLite for the full comparisons.

Verdict: who a LEKA roof suits

A LEKA roof suits you if you want the lowest published U-value, like the idea of a frame that cannot rot or corrode, and value a long component warranty. It suits you less if you want plenty of independent reviews or a published price to benchmark against.

When you get quotes, ask the LEKA installer for the U-value of your specific build-up in writing, which parts of the roof the 40-year warranty covers, what workmanship guarantee they add, and confirmation that the MFA completion certificate will be issued in your name.