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Specifications :- Insulated Sectional Doors.

Panel Construction :-
Insulated door panels are constructed from 0.7mm or .05mm galvanised steel sheets bonded together with C.F.C. free polyurethane foam with integral thermal breaks to provide a U. value of 0.45w/m20 C. The combined effect of the panel insulation properties together with the effect of the thermal bridges at the panel to panel joints results in a overall U value of 0.6w/m20 C. This value exceeds building regulation requirements.

Panel Finish :-
Standard - white polyester stucco both sides. Optional finish to external face at additional cost. British Steel HPS200 scintilla or HP200 Plastisol to the following BS colours:

Leathergrain Plastisol

Architectural Polyester

End Caps :-
Each panel is fitted with galvanised punched end caps, to accept adjustable roller carriers and rollers. The rollers generally have shaft, nylon running surface and ball race bearings.

Hinges :-
Each door panel is connected to its adjoining panel by means of side hinge roller carriers and intermediate hinges at approximate 1000mm centres.

Tracks :- Cold rolled 2mm thick galvanised steel track with bends which are preformed in pairs to ensure smooth operation. The tracks are secured in the opening structure by vertical support angles and from the roof structure by fixing hangers. Spring buffers are provided to the back tracks to ensure operating cables are always tensioned.

PLEASE NOTE: minimum clearance between adjacent doors is dependent on track arrangement and position of hand chain or drive motor please consult us for accurate dimensions. PLEASE ENSURE ALL OPENINGS ARE FORMED PLUMB AND SQUARE WITH ALL INTERNAL FACES FLUSH. Doors which are installed directly on to steelwork openings provide an ideal weather seal all round. On uneven masonry openings it may be necessary for clients to provide a 125 x 50 mm timber sub frame in order to give flat, even fixing surface. GENERAL NOTES :Hand chain operation or electric drive motors may be positioned on either side of the opening to suit your requirements. Where minimum headroom is not available or where there is an obstruction adjacent to the opening it may be possible to amend the track detail or re position the counterbalance springs at high level to suit.

MINIMUM SIDE ROOM REQUIRED

Push up 150mm
Chain op 250mm
Electric op 350mm
Track arrangements to follow roof pitch available.

Furniture :-
As standard all manual doors come with footstep handles & springs loaded shoot bolt fitted to the right hand side of the door (viewed from inside).

Springs :-
Springs calculated to suit the weight of each door are fitted to a 1" solid steel shaft and secured to the opening structure via bearing plates. The number of springs and plates depends on the size of the door, we recommend a full width RSC be installed to accept these. To the ends of the shafts are fitted the grooved aluminium cable drums on which the operating cables run.

Seals :-
Flexible black rubber seals are fitted to all four sides. Top seal compresses against the lintel & bottom seal has 3 points of contact with small incline away from the opening.

Operation :-
Doors in excess of 3000mm x 3000mm come with chain hoist. Doors of smaller size are provided with pull chain. 3 phase electric operation is also available at extra cost. A full range of activation and safety equipment is available.

Optional Extras :-

Typical Door Assembly :-

BI-Fold Rolfe reserve the right to alter Specifications to design and manufacture
without notification. All Specifications are correct at time of website publication.