Quality assured Roofing

Insulated Panels for Conservatories

Up-date your conservatory roofing and reduce heat build up & Glare

Do you have tired polycarbonate panels or failed sealed units?

INSULATED PANELS: A direct replacement for your existing polycarbonate or glass roof panels. To fit all existing conservatories whether Hardwood, Aluminium or PVCu.
Increasing insulation whilst reducing heat build-up and glare.

SPECIFICATION: Raised / Trayed panels manufactured from 2mm PPC Plastisol Steel Faces bonded to each face of Styrofoam insulation. Overall thickness of panel 80mm. edge thickness to suit thickness of polycarbonate being replaced. Available in white or many attractive RAL colours.

Latest Bronze/Opal Polycarbonate
Heat reflective easy clean glass roofs. Also fully tiled roofs

Tiled Roofs

The revolutionary LEKA Warm Roof System from David Fenning’s Sunrooms has been professionally designed to create a stunning garden Room which can be comfortably enjoyed during our Four Seasons.

Unlike conventional conservatory roofing which creates a heat trap in the summer and can be cold in the winter, the LEKA warm roof enables your room to maintain an ambient temperature all year round. The combination of the LEKA roof and A rated glass offers an overall U-Value of 0.15 making it one the best heat insulators of its kind too. The LEKA roof is as stunning as it is practical and exclusively available from David Fennings Sunrooms who have over 40 years’ experience in glazing expertise. So you can be sure you are in very safe hands.

Truly Lightweight

The truly lightweight tiled conservatory roofing system (no smoke screens). We do not brand the new LEKA Warm Roof as a lightweight roofing system without the facts to back it up, whilst subsequent competitor products actually weigh nearly double that of a traditional glass conservatory roof.

Better Lifespan

Using either a Metrotile lightweight sheet for your outer finish of your new sunroom or a Tapco slate alternative you can rest assured that the product provides better lifespan to a heavy alternative tile and is lighter than that of concrete or traditional slate.

Glass Reinforced Plastic

Using GRP or glass reinforced plastic allows a structurally tested, lighter alternative to aluminium and timber when providing the main structural roof rafters. GRP is not at risk of sweating/condensation or cold bridging like aluminium. Nor is GRP open to wood worm, moisture absorption or potential rotting such as timber. The LEKA Warm Roof Structural profiles are manufactured and comply with BS EN 13706.

Improved Efficiency

Having a load bearing structural insulated and weatherproof outer sheet allows the use of less roofing bars and so our roof bars can be spaced further apart which reduces weight and also improves energy efficiency levels.

Within 30-40kg of a Traditional Glass Roof

Average LEKA Warm Roof weigh within 30-40kg of a traditional glass conservatory roof which allows (in most cases) your existing conservatory frames to take the weight of your new LEKA Warm Roof.


More Innovation

With innovative products throughout and combining insulated sheets with Celotex insulation the LEKA Warm Roof has less elements to install onsite which speeds up your installation timings with average installation only taking 2-3 days including removal of your old conservatory roof.

Industry Leading U-Value

The LEKA Warm Roof has an industry leading U-Value of 0.15. Making the LEKA Warm Roof virtually unbeatable in its Market. Unlike competitor systems achieving only a U-Value of 0.18, we do
not just add excessive quantities of thick insulation to overcome thermal bridging – conductivity issues when using aluminium, or moisture absorption when using timber, our system is engineered much better. Every layer and product element is implemented to not just suit its primary purpose, but to be more insulated naturally and have no thermal conductivity elements, making the LEKA Warm Roof one of the most superior systems.

LEKA Insulated Board

With our own LEKA insulated finishing board replacing the need for plasterboard as the internal finish prior to plastering, this new innovative board is a third the weight of a plasterboard and insulated at the same time.

No Outer Plywood Needed

Removing the usual need for an outer plywood material which again is open to deterioration over a period of time and replacing with the new LEKA structural,100% weatherproof, lightweight insulated boarding system reduces the overall weight of the roofing system and improves the overall U-Values of the finished product.

A Design to Suit You

Although the LEKA Warm Roof is a technically superior roofing system, the aesthetics and beauty of the roof haven’t been ignored.

With a choice of tile or slate means you can select the colour and style to complement the existing roof on your home creating a seamless, beautiful finish.

You can also choose from Victorian, Edwardian, Gable Ended, Lean To or P Shaped designs, so you can create a style that suits your home.

Benefits of Conservatory Roof Replacement with Warm Roof:

  1. By replacing your tired old conservatory polycarbonate or glass roof, you can achieve a full warm roof with thermal insulation, in full compliance with current Building Regulations
  2. A fully insulated warm roof would not only provide you with an attractive modern extension design but ensure that you will not be too hot in the summer or cold in the winter and comfortably use your re-designed structure throughout the year
  3. A wide range of high specification Tapco Tiles with a choice of several different colours, so that they will match your property’s existing roof
  4. JHAI Current Building Regulations Certification will be provided for compliance with current legal requirements
  5. Your new conservatory roof replacement with warm roof and introduction of appropriate insulation will change your tired glass or polycarbonate roof into a full home extension
  6. The tiled roofs we offer, come with a fully re-designed rafter system incorporating Low E High Specification Celotex
  7. By replacing your existing conservatory roof onto an existing base and side elevations, may enable you to create a tiled extension, with a fully insulated warm roof at a considerably lower price than full re-construction
  8. High specification Tapco Roof Tiles are extremely durable and very strong compared with slate and they are lightweight.  Tapco Tiles are ideally suited when constructing new roofs to replace glass or polycarbonate
  9. If an Open Plan is required, the replacement of your existing roof and side elevation glazing with the latest Low E Glass, offer the opportunity of creating an Open Plan Extension.  You may then be able to remove the doors which currently close off your conservatory to the adjoining room



We have an old PVCU conservatory with polycarbonate roof panels. It cannot be used comfortably for much of the year but is ideally positioned on our home and within the garden. What options can we realistically consider?

Thermally insulated panels could be introduced into the existing roof simply replacing the old polycarbonate. If the structure is sufficiently strong, then the latest low ‘e’ & ‘a’ rated thermally efficient low ‘e’ heat reflective self cleaning glass may be fitted in the roof. If many of the older glass units have misted up, then you may wish to consider replacing tll glazing with the latest ‘a’ rated – low ‘e’ toughened sealed units. The side elevations may well be structurally sound but in many cases not conservatory roofs. An economical choice may be maintaining the sides and fitting a complete new roof with the latest low ‘e’ heat relective easi-clean, ‘a’ rated glazing.

We would like to consider a tiled roof. Is this possible?

Should the side elevations be sufficiently strong, you may have an option for an insulated tiled roof with internal perimeter ceiling.  This would also offer the opportunity of led lighting.

Will planning permission be needed?

If you are changing a glass or polycarbonate translucent roof with less than 75% glazing or 50% within the sides elevations, building regulations will certainly be required.  These can be achieved through the good offices of jhai or your local building control office.  This certification is very important should you be selling your property to show full compliance.  *we will would include this within our quotation proposals.

We have a timber structure with areas of rotting wood and misted sealed units, what options do we realistically have?

Many timber conservatories have side elevations which can be restored.  However, in many cases the roof will require extensive works or a complete replacement. If the joists and other timbers are in good order, your roof can be de-glazed and extruded architectural aluminium capping secured onto the rafters, replacing the flimsy timber capping.  Your roof can then be re-glazed with the latest low ‘e’ heat reflective self cleaning glass. If the rafters have also deteriorated then these should be replaced with a new timber structure which will include maintenance free powder coated architectural aluminium cappings and the latest high specification glazing.

We have an open plan glazed sun room. Does this mean new structure?

If the existing foundations and drainage are compliant with current building regulations, this may not be required.  You will however need to submit an appropriate application to your local authority, showing that the new glazing and framework have an appropriate thermally efficient low ‘e’ heat retentive specification.  It may also be necessary to increase the insulation within your property and a new boiler will very much assist, if you have had one fitted recently, that can be used retrospectively to assist your application.

If we introduce the latest heat retentive components when restoring our conservatory sun room, what opportunities do we have if originally constructed with a basic cold concrete internal floor?

Not only would a great deal of heat be lost through these older style basic floors but much cold from the ground below will also come into your conservatory.  There may be an opportunity of breaking out the concrete floor and introducing the latest celotex insulation with an appropriate damproof membrane. Much care may need to be taken, should you wish to maintain the existing perimeter wall and its foundations. You may well find that a complete reconstruction of the foundations and perimeter wall, plus your concrete floor, is a more overall realistic economical decision.

Should we choose not to break out the old floor, is there an alternative option?

If the existing floor is below opening doors, then you may be able to introduce insulation with karndean floor or similar.  Several millimetres of the latest thermally insulated materials can make a significant difference.  If however, this is not possible, even when taking off appropriate millimetres at the bottom of your existing doors, a dense weave carpet with similar underlay will significantly improve the useability of your existing sun room throughout the colder months.  This can be designed to cover the majority of your floor, providing a substantially more comfortable environment, even in winter months and shaped to allow existing hinged doors to open.

What support and guidance can be offered to us by David Fennings' Conservatories?

For over 40 years our company has constructed numerous  conservatories, sun rooms, orangeries, open plan extensions and a multitude of different designs including free standing buildings. During this extensive period, we have become acutely accustomed to challenges presented by new customers and how important it is to design buildings which will fully accommodate their wishes, do so within a desired budget and offer competitive quotations for the overall works. In most occasions our customers have desired for us to organise the whole project, provide guidance with regards to planning, building regulations and provide substantial references before any final commitments are made.