PRE-HUNG DOORS

‘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

PRE-HUNG DOOR SPECIFICATIONS

A standard pre-hung door will be supplied with the following (unless otherwise specified):

Standard Jamb thickness of 25mm – either in MDF or Pine.
Standard Jambs can come as either grooved (to receive linings) or architrave. Both made to fit 90mm framing and 10mm linings
Floor clearance under the door is 20mm

HANGING

Use this diagram to work out the hanging of the door i.e. the ways it swings.
Always imagine the door as swinging towards you.

JAMBS

Standard jambs come in two main profiles:

grooved
architrave

Both are made to fit for 90mm framing and 10mm linings both sides. The standard thickness of jambs is 25mm, either in MDF or Pine.

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; (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

A door is made up of the following parts:

Subframe
Skins – generally MDF and different options for paint finish
Core

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 Hollow Core, Poly Core and Solid Core.

HOLLOW CORE

Hollow core doors are constructed with a thin veneer of high-quality wood applied over a core of honeycombed cardboard.

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.

PRE-HUNG DOORS TECHNICAL