
The design of a single-storey rear and two-storey side extensions for
an end-of-terrace house in Tower Hamlets, London is in progress. We are
just before the planning submission stage, so finalising the external
design.
We have made some design options for glazed doors to the rear extension
as below. It could be sliding doors, bi-fold doors or some other
specialist doors like slide-and-turn doors, pivot doors etc.
The appearance will be quite different depending on which system is
chosen, for both closed and opened configurations. Bi-fold doors could
maximise the free area when opened, but when closed there will be more
visible vertical frames, while sliding doors could have wider panes with
simpler and more reliable operation although the open-able area will be
less than the bi-fold doors. There are always trade-offs between systems
to be chosen.
We are considering specifying high-performance triple glazed unit with
the U-value of 1.0 W/(m2K) or better, and this also limits the number of
products which could be specified.
This time the clients decided to go for the sliding doors as the Glazed
doors 03.

Glazed doors 01: Five-pane bi-fold doors to rear and two-pane bi-fold to side

Glazed doors 02: Three-and-two-pane bi-folds to rear and three-pane bi-fold to side

Glazed doors 03: Three sliding panes to rear and two sliding panes to side

Glazed doors 04: Four sliding panes to rear and two sliding panes to side

Glazed doors 05: Fixed corner glazing + Three sliding panes to rear and two sliding panes to side