Sunroom Remodel design

What the room has to do

A sunroom remodel is a comfort problem. The glazing already exists; what the work adds is the ability to sit in it in July and January. Glazing spec, shading, ventilation and floor build-up decide whether the room joins the house or stays a corridor to the garden.

Layout rules

• Roof glass is the difference between a sunroom and a conservatory that overheats — spec solar-control glass or accept blinds.
• A roof pitch of at least 15° keeps rain moving and stops debris settling.
• Keep the floor level with the adjoining room; a step down makes it a separate space forever.
• Allow openings for ventilation on two opposite sides, not one.
• Leave 36in of route between the house door and the garden door.

Lighting plan

The room is a light source by day and a black mirror at night. Put the lighting low — floor and table lamps — so the glass reflects a lit room rather than an array of ceiling fixtures, and the garden stays visible after dark.

What usually goes wrong

• Clear roof glass with no shading, making the room unusable from May to September.
• A single step down to the sunroom, which quietly stops it being part of the house.
• Ventilation on one side only, so nothing cross-flows.
• Downlights in a glass roof, reflected back at the occupants all evening.

In a small one

A small sunroom that is level, heated and shaded gets used every day. A large one that is none of those things gets used twice a year — the comfort spend beats the square footage every time.