Extended three seasons – Prime line


Our mid-range extended three-season sunroom.  Comparable with high-end products offered by other suppliers. Used as an all-purpose additional living space for most months of the year.  20-year warranty.
Installed at any season.  No mess, one week on-site installation. Offered with certified installation only.


Our extended three seasons room, constructed of a 3″ wall structure, with 2.5mm (.100″) industrial grade aluminium is built with the same attention to detail as our all-season rooms.

While other three-season sunrooms consist of lite structure and standard hardware, our product is a real room, can be used almost to the height of the Canadian winter. It is by far the sturdiest and most appealing product available in the market. Add all-tempered glass, stainless steel track system and elite hardware, and you get the longest-serving product, with a matching guarantee.

The room is as complete as it could ever be, no additional modifications or options needed; all are included with the all-inclusive approach we took in designing it. It is made to withstand leaks and draft, extreme heat or cold, human or nature’s punishment, so will serve as new for decades.

Definition of three seasons room is a non-insulated structure. However, glass is an excellent insulator. Having a 3/16″ (5mm) glass all over the room means good insulation there. Further, in our prime three seasons room the knee-wall is insulated – 3″ panel. Same with the roof. All this means that the only conductive lines are the frames, which present little surface as part of the whole. What it really means for you is that this room can be used almost year-round, and may get frost only when the temperature really dips. It may be called three and a half seasons.

In its class, as a non-insulated three-season sunroom, there is no other product in the marketplace that comes close to this room. Be it with looks, thermal characteristics, strength, and aesthetics.

Anatomy of a sunroom, from the ground up:

The quality of a sunroom is a sum of all parts. Some visible, some are not. See below what makes the difference.

Bottom of wall:

Water moves at the path of least resistance, and all end up at the bottom of the wall, draining into the floor channel. Our unique floor channel is designed to stop water from seeping inside via quadruple modes:

–  Outwards slopped floor channel ensures any water or ‘sweat’ will always drain out. Other products are flat at the bottom, so water may accumulate or seep inside.
–  The floor channel is pre-punched at the low end, towards the outside. Others may (or may not) drill weep holes on-site, but on-site drilling cannot be low enough to allow all humidity to drain, so the bottom track will be always damp.
–  To seal under the floor channel we use a long-lasting neoprene seal together with a silicone caulking bead. The seal and the silicon stay flexible for decades, unlike ordinary sealant that may dry and crack.
–  Room is mounted on a concrete or wood substrate. Both are porous and will stay moist for a long time, hence sealant may prematurely deteriorate and mould will build up. We cap the perimeter with a colour-matched vinyl or aluminium layer to fully eliminate any moisture from penetrating inwards.

Wall structure:

Slim, yet heavy gauge aluminium extrusions interlock into each other give you unmatched strength. Yet, being interlocked, not using wide external couplers as others do, it gives you the largest glass area.

All wall structures installed on a continuous floor channel – no joints prone to leak.

While the room is a non-insulated class, our solid walls are insulated. Made of 3” thick, made of four layers: inside / outside a colour coded aluminium skin, a layer of high-density polystyrene and a layer of OSB – same construction used on new R2000 compliant houses. Wall sections are not only structurally strong; they also withstand the elements, salt, and your snow shovel.

Rotating header:

The room’s roof rests on the front wall section. We use a self-adjusting rotating header that distributes the roof’s weight between the inside and outside of the wall. Installing the roof on one side only – the outside wall edge – may cause the wall to buckle under the roof’s weight. Further, this adds a neatly finished look to the wall, without superficial unsightly trim.

Knee wall:

A 20” section at the bottom of the wall can be made of solid insulated wall section or thermal tempered glass, at no price difference.

Fasteners and joints:

To hold all together we use an elaborate system of positive interlocks that snap together. All are secured in place with robust fasteners.


Rooms have to be usable, so may require power outlets. Our high-end rooms carry a system of raceways in the posts, to wire electrical, cable or phones, none visible.
In other rooms wires are either installed from outside, using expansive and unsightly cables and conduits, or mounted over the inside wall, neither is a great view.


The largest and most visible section of the room can be problematic if not well designed and well made. Our windows are constructed patio-door style, same heavy-duty hardware and same tempered glass The windows do not have a separate frame but are installed straight into the room’s structure. That means there is a much slimmer profile and hence more glass.
Others use regular windows installed within the room’s structure, so showing heavy frames and less glass.


Our window hardware is the same as our doors, meaning ultra-strong, long-lasting and easy to use. Handles are wide and easy to grip and lock. Locks are made of steel, not composite brittle die-cast as found at others.
Rollers consist of steel wheels mounted on self-lubricating bearings. Each set is individually adjustable so the window is always at its correct position. Other use gliders, making the window difficult to move, or at best pin mounted plastic rollers, which develop a flat surface if not opened for a long time – say a single winter.
All that system runs on a stainless track that will not nick nor dent and will smoothly operate for generations. In the unlikely event that it will damage, service is easy and fast.
In other systems, the track is part of the window frame, commonly made of aluminium. If needs service it takes to remove and replace the whole frame.
Drainage is paramount to windows, to rid water from inside / outside tracks. All our windows carry a drainage system, protected outside with bug cover so stop insects from getting in.


Strong and yet high visibility mesh covers all operating sections. Frames are made of extruded, colour coded aluminium, strong enough to withstand human and nature’s impact. Screens slide the same as windows mounted on self-levelling rollers system and are lockable. Other manufacturers use a roll-formed frame, fixed in one place.


To utilize most out of your new sunroom we offer doors to match almost any given opening. Smaller doors on less-used sides, and larger at other. All attributes available at our windows system apply here as well. Moreover, our doors are mounted on a continuous floor channel, so no week point at joints. This means structural integrity, the door will not heave and will never leak.
sliding doors are used in most configurations, where matching hinged doors are available for narrow areas.


Our premium three-season rooms carry tempered glass units, for extra strength, safety and noise reduction.


To cover your new room we carry insulated roofs at several thicknesses and build. Roof specifications are defined by the room’s span and your areas’ snow load. See our insulated covers section for more detail. We offer both solid and clear roofs and may dress the solid roof with wood panelling for a warm and cosy feel. What makes us different is that roof and structure are made at the same plant, so quality, looks, colours and service are the same.
With other suppliers, roofs (and windows) are sourced separately, so combination and looks are not always the same when new, let alone after some years in the sun, or when service is due.


Trivial as it may be, we offer the only sunroom roof in the market that comes with an integral gutter, made of extruded aluminium, colour coded. Large rooms need to drain lots of water, so if the gutter is surface mounted water may splash over, seep between the gutter and fascia or the gutter may dent and fail altogether.


Where others may nickel and dime you for different configuration, our costing method is simple. You may select all doors, all windows or a combination thereof, as applicable and technically possible. Price will be the same, no need to compromise for convenience on account of cost.


All exposed products are man-made, with no organics such as wood, so there is nothing to deteriorate, swell or warp. Rooms require no maintenance or painting, save for an occasional trough and track cleaning


Where others find it impossible, we find a way. Our resourceful and experienced designers see solutions where others do not. Engineering, designs, plans, and permit packages are always at your disposal.

Quick links