BS EN 13125:2001 – Shutters and blinds — Additional thermal resistance — Allocation of a class of air permeability to a product

1 Scope
This European Standard specifies the classification criteria of shutters and internal and external blinds in relation with their air permeability for the calculation of additional thermal resistance given by these products according to EN ISO 10077-1.
This standard applies to shutters and blinds fitted to a window, a French window or a curtain walling in such a way that in extended and closed position they inclose an air layer of thickness roughly constant between 15 mm and 300 mm (shutters and blinds parallel to the window or to the façade).
This standard applies to the following shutters and blinds :
Shutters : roller shutter, external venetien blind, wing shutter, sliding panel shutter, venetian shutter, concertina shutter, flat-closing concertina shutter ;
External blinds : vertical awning, facade awning, conservatory awning ;
Internal blinds : venetian blind, roller blind, vertical blind, pleated blind ;
Blinds incorporated into glazing.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies (including amendments).
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in prEN 12216:1995 and EN ISO 10077-1 apply.
4 Shutters – Allocation of air permeability classes
4.1 Criteria for classes allocation
The air permeability criterion is expressed from geometrical considerations in terms of a total gap between shutter and its surrounding. The total gap is expressed as follows :
e tot = e 1 + e 2 + e 3 [mm]
where :
e tot is the total gap
e 1 , e 2 , e 3 , are the average gap at the bottom, top and side of the shutter. These values are defined on Figure 1.
The gap conditions to be fulfilled will be specified by the shutter manufacturer in his installation instructions.
BS EN 13125:2001 – Shutters and blinds — Additional thermal resistance — Allocation of a class of air permeability to a product