Description of tender PRO TEC Classic+
Inward- and outward-opening windows and doors
Windows and doors must be constructively protected with a wood preservative in accordance with the Danish
window industry’s technical provisions (Vinduesindustriens Tekniske Bestemmelser), and there must be no bare
wood in the glass rebate. Air and water tightness must be documented in a test report issued by an authorised
institute.
The products must be classified as “excellent” according to the performance description 2, “Windows” of SBI
(The Danish Building Research Institute). Windows and doors must be DVC-labelled and supplied with a 5-year
warranty.
Wood
All wood must be north Scandinavian pine of a quality that can be regarded as an ordinary good product. The
wood must be dried down to a moisture content of 12 % (+/- 3 %) before processing begins. The sashes should
be KSL-labelled glulam containing heartwood.
Aluminium
The aluminium profiles must be manufactured from alloy ALMgS of 0.5 according to DIN 17615.
There must be no double frames or mullions anywhere in the windows and doors.
Frame construction
The wooden frame should be fitted with a plastic profile externally to ensure a high thermal insulation. This
profile should include a rubber seal, to form an air-tight cavity against the wooden frame.
The plastic profile should be fitted with an aluminium profile externally, to receive an aluminium cover plate. The
plastic/alu section of the frame should have punched drainage holes.
The wood dimension must be 42 x 140 mm for the fixed lights and outward opening windows and 16 x 140 mm
for inward-opening designs.
GRP (Glass fibre-Reinforced Polyester). The GRP door threshold should have a matrix of polyester, with
glass fibre reinforcement in the form of mats and strands. The min. door frame size should be 42 x 140 mm, or
23 x 140 mm when a low GRP door threshold with protective aluminium strip is used.
Sash construction
Wood sashes should have a clipped-on external aluminium weather shield to secure the glass. Handles and
espagnolettes should be fitted on the warm side of the air tight area between two gasket seals, to prevent
condensation.
Sashes must have a dimension of 56 x 93 mm for outward opening windows and fixed lights. For inwardopening sashes, however, the dimensions must be 65 x 64 mm. Aluminium sashes must have a clipped-on
internal wood moulding to secure the glass.
Sashes for patio doors must have a dimension of 56 x 93 mm for outward opening doors.
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Surface treatment
Wood
Only water-based wood preservatives may be used for priming. The wood must be surface-treated with a waterbased, diffusion-open acrylic/alkyd paint approved according to NORDTEST BUILD, NT 229. Both the primer
and the paint used for surface treatment must contain fungicides. Coat thickness front: 60-80 my dry. Coat
thickness back: 30-40 my dry. The wood should be sanded lightly before application of the final coat. Frame and
sash components must be primed and surface-treated prior to assembly to ensure optimum protection of end
grain and dovetails.
Aluminium
The aluminium frame section must be polyester powder-coated following prior chromating, coat thickness 60-120
my, or anodised with a coat thickness of 20 my. All frame joints must be sealed to prevent moisture from
ingressing into the sash.
Glass
Double-sealed insulating glass of a recognised make covered by the glass supplier’s normal 10-year warranty
must be used. The glass must be fitted with glazing beads with hidden fasteners. The glass must be 48-52 mm
thick, except for the turn/tilt windows where the thickness should be 36 mm.
Fittings
All fittings must be made of naturally anodised aluminium or zinc electro-plated and yellow-chromated steel or
plastic.
Handles
Lockable handles must be in matt chrome.
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Window types
Fixed light
Fixed frames must be clearly distinguishable from moveable parts in respect of design and dimensions to ensure
that the function of the window is easily identifiable.
Side/bottom-hung windows (turn/tilt window)
The sash must be fitted with single-handle operated fittings with concealed jacks. When turning the handle, it
must be possible to choose between a side-hung or bottom-hung function. The side-hung function must allow
the sash to open inward up to 90 degrees. The bottom-hung function must allow the sash to be retained in an
open position and produce a ventilation gap of approx. 10 cm at the top.
Side-hung window
The sash must be fitted with casement catches and window stays. The sash must open up to 90 degrees. Any
opening restrictor must have adjustable friction. Standard fittings should consist of a matt Mila handle and
espagnolette in left and right hand versions. They should also include handle-operated or friction brakes.
Side-guided window
The sash must open outward up to 90 degrees and be retainable in any ventilation position using a friction bolt.
When fully opened, the external surface must be cleanable from the inside. Standard fittings should consist of a
matt Mila handle and espagnolette (right-hand version).
Top-guided window
The sash must open outward and must produce a ventilation gap in fully open position. The balance arm must
have built-in friction, allowing the window to be retained in any open position. Standard fittings should consist of
a matt Mila handle and espagnolette (right-hand version).
Top-swing window (top guided reversible window)
The sash must open outward and allow 180-degree tilting where it is retained to allow cleaning from the inside.
The window must be fitted with a child-proof lock which limits window opening to approx. 10 cm. It must be
possible to retain the sash in a ventilation position.
Patio door
The door must open outward and be fitted with an internal lockable handle which activates three closing points.
The sash must be fitted with an adjustable friction brake which limits door opening to 90 degrees. The sash must
be hung on 3-4 hinges.