The main factors affecting conservatory price are:

Conservatory:

• Location: Frequently a conservatory is into a corner, with just two sides, or into a courtyard, with only one side.
• Size: width, projection, frame height, height at house wall
• Type: Conservatory with 75%+ glass roof, Orangery having flat roof and central lantern or Garden Room with tiled or slate roof, both the latter requiring building regulations.
• Material: from white PVC at 45% of the cost of Oak, rising through coloured PVC, aluminium, pine, Sapele, Idigbo to the very best seasoned Oak
• Frame type: Storm-proof sashes, standard with 70mm frames. Flush, conservation sashes with 90mm frames. Typical for Listed Properties.
• Frame features: Do you require glazing bars, such as Georgian style squares, leaded lights or coloured glass features?
• Doors: number and position of doors or double doors (recommended door width 700-800)
• Window openings: number and position of openings (recommended window width 700-800) Recommended min of 2 full height openings, 4 if conservatory over 10 sq.m.
• Frame/roof centres: Important – window sashes shouldn’t exceed 800mm, if you want the roof rafters to align with the frames.
• Roof Design: the simpler the design, the lower the price.
• Box Gutters: Does the design require a box gutter. If so, does it need to be structural?
• Insulation: A rated glazing with minimum of 1.1 u value recommended
• Roof glass: solar control glass should be standard unless in the shadow of a North facing house (0.9-1.0 u value, keeps out up to 78% of unwanted heat)
• Frame glass: clear solar control glass with 1.0 u value, should be used on South facing conservatories.
• Roof Ventilation: warm air rises – it’s essential to fit roof vents minimum one up to 12 sq.m., two over. These can be manual, electric or automatic.
• Planning: Depending upon the position and size, amongst other factors, such as being Listed or in a conservation area or area of outstanding natural beauty, etc. will determine whether you need to allow for Planning Costs.

Once you have decided upon the design and specifications for you conservatory, the following are the building work considerations whether the material be PVC, Aluminium, Pine, Sapele, Idigbo or seasoned Oak. Continue reading →