FLOOR
An insulated floor (wool insulation or urethane) will be built on the installed foundation. Laying tongue-and-groove plywood on top of the foundation serves as a starting point for installation of the floor’s interior finish (some finishes require greater preparation).
LOW WALL
The exercise continues with the insulated wall (wool insulation or urethane). Varying in height, it is closed on the exterior with plywood. It is ready to receive a wide variety of finishes, such as fiberboard siding (Canexel), aluminium, aggregate, stone, brick, etc. (Selection of some finishing materials requires greater preparation). It is mainly useful to allow plugging of the heating units and the electrical wiring. The wall’s interior finish is up to the buyer.
BLIND WALL
Whether because of view restrictions or to ensure privacy, a blind wall can be constructed with the same characteristics as a low wall. A party wall is designed as a firewall according to municipal standards.
       
RECEIVING WALL
The exterior finish of the solarium receiving wall will be removed (regardless of the cladding) to fasten the wood stringers. Installed along the entire perimeter, they serve to create a thermal barrier and for levelling and squaring of the right angles, essential to installation of a glazed room.  
KEEPING THE DOOR
The Three Seasons Plussolarium does not allow opening of the wall or elimination of an existing door between the solarium and the house. This imperative condition is imposed by our harsh winters. 
       
FALSE ROOF
Installation of an insulated false roof (wool insulation or urethane) on a street-level house is necessary, more often than not, to meet the required slope and height standards. This false roof may have one or two lean-tos. A ventilation opening is made between the existing roof and the new roof. The latter receives the same exterior finish as the former. A three-foot clearance is left around the rim of the false roof to allow installation of a waterproofing membrane on this entire surface.

RECOMMENDATIONS
The glazing of the Three Seasons Plus solarium is much less efficient than that of the Four Seasons solarium. We therefore do not recommend opening the wall or removing the existing door between solarium and the house. This room must always be temperate, meaning that the temperature must be maintained above the freezing point (between 5 and 10 degrees Celsius) to prolong the life cycle of the sealed units.

 
OBVIOUSLY,
STABILITY IS ESSENTIAL FOR A GLAZED ROOM
 
 
       
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