A bedroom glass wants three things: good insulation, control of glare and some resistance to rain noise. Low-emissivity double glazing is the usual choice, and a laminated outer pane reduces the drumming sound of a heavy shower, which people notice in a loft room.
A conservation rooflight is relevant to older roofs. It is a slim metal-framed unit set flush with the slates, and it suits houses where the slope faces the road. Inside a conservation area it is often the favoured choice, since the roofline stays much as it was.
Thermal rules reach bedrooms as they do any room. Part L gives a roof window the window limit and a rooflight a figure of its own, so we confirm which category your unit falls into and print the number on the quote.
Blinds are part of the choice. A blackout blind designed for the frame sits in side channels and cuts out daylight completely, and it can be electric or manual. For a bedroom, we usually suggest ordering it with the window, so the two fit together.
Opening or fixed is a real choice here. A bedroom benefits from fresh air at night, and a pivot window above the bed gives a gentle draught without a draught on the pillow. A fixed unit is simpler and cheaper to maintain, but it cannot ventilate, so it suits a room that already has a good opening window.
If the room faces south, glare and heat gain deserve attention. A solar control coating or an external blind keeps the room comfortable on warm days without darkening it in winter.