Warmer Bath

Improving the energy efficiency of traditional homes in the City of Bath
7. You can now put the windows in place by dropping
them into the carriers that you have already installed.
The Perspex will attract some dirt when first fitted as it is
initially electrostatically charged but this charge will go
when it is next cleaned.
8. A special tool can be used to grip the plastic panes
when you want to remove them in the spring.
Suppliers
L-shaped plastic carrying strip (20mm x20mm x3mm):
MKM Extrusions (www.mkmplastics.com); code no.
A20203W; 25 3metre lengths will be enough for 10
average windows.
Double-sided clear very high bond tape: Tapes Direct
(www.tapes-direct.co.uk); a single 19mm x 0.25mm x
33metre roll will be enough for 5 average windows.
Magnetic secondary glazing kit comprising white steel
tape and white backed TESA magnetic tape: Magnetik
(www.magnetik.co.uk); 2 rolls will be enough for 4-5
average windows.
Made-to-measure Perspex cast clear sheeting: The
Plastic Shop (www.theplasticshop.co.uk); 3mm or 4mm
thick according to how rigid and efficient you want the
secondary glazing (in this case study 3mm panes were
used where there were two sections, 4mm panes were
used for single large panes).
You will also need a litre bottle of isopropyl alcohol or
Halfords glass cleaner to clean all the surfaces prior to
applying any of the sticky tapes.
Suction pads: Coopers of Stortford
(www.coopersofstortford.co.uk )
Above: two panes of secondary glazing are used for
this double sash window. Top and bottom: the corners
of the secondary glazing can be seen, held in place by
the L-shaped carrying strip that adheres to the bead of
the original window. Middle: a T-shaped carrying stip
stuck to the top of the front sash holds the top edge
of the bottom pane and the bottom edge of the top
pane. Left: this window, being removed, has only one
undivided secondary pane.
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