STANDARD PRE-HUNG DOOR SPECIFICATIONS
‘Pre-hung’ refers to a door complete in a frame. They consist of three main components:
DOOR LEAF: this is the actual panel that swings in the opening.
DOOR JAMB: liner or frame that surrounds the opening on which the door leaf is hinged.
STOPS: usually ‘planted’ onto jamb. This is the part of the door frame the door hits when it closes
A standard pre-hung door will be supplied with the following (unless otherwise specified):
JAMB: 25 mm
FLOOR CLEARANCE: 20mm
HANGING
Use the diagram to work out the hanging of the door i.e. the ways it swings.
Always imagine the door as swinging towards you.
JAMB
Standard Jambs can come as either grooved (to receive linings) or architrave profiles. Both made to fit 90mm framing and 10mm linings.
STANDARD THICKNESS
25 mm
MATERIAL
MDF / Pine
PROFILE
Groove / Architrave
SIZING CALCULATIONS
Formulae – to work out sizing based leaf sizes use the following calculation:
HEIGHT = Door leaf height + 57mm
WIDTH SINGLE = Door leaf width + 75
WIDTH PAIR = Door leaf width x 2 + 76
*Trim size means the size of the opening required to fit the pre-hung door. This includes clearance to fit.
DOOR CONSTRUCTION
SUBFRAME
Doors are made with a FSC rated pine sub frame 15-25mm thick and with MDF skins.
SKINS
Doors are made with MDF skins ranging in thicknesses from 3mm, 4mm and 6mm. The greater the skin thickness, the better the paint finishing.
CORES
Our doors are available as Poly Core and Solid Core.
POLY CORE
A Poly Core door utilises the same sub frame construction however it has a higher density polystyrene core.
This gives it a sturdier feel without the addition of too much weight.
STIFFENED CORE
Stiffened core doors are specially constructed for sliding door applications. These doors are designed to hold the door straight using aluminium or steel stiffeners set into the core of the door. These doors also come with wider subframes and thicker skins.
SOLID CORE
Solid Core doors represent an interim construction method, in which a fine grade surface wood veneer is glued over a solid core made of engineered wood, such as MDF or particle board. This gives the door a very solid feel and a greater level of sound proofing.