Triple Glazed Lead Lights
Traditional Casement Windows
Traditional box Sash Window
Casement windows
Black and white casement window
Box sash windows
White wood box sash window
Entrance doors
Wooden blue front door
Bifold doors
Wood Bi-fold doors
Coloured fanlights
Coloured glass fanlights

Casement Windows

Wooden Casement Windows

We custom make two styles of timber casement windows, the first being the traditional square edge flush casement window which is hung on butt hinges and secured by stay bars and cockspur handles. The other being a stormproof casement window which is hung on friction hinges and secured by a multi point locking system.  Both styles are manufactured using rebated sections and are fully draught excluded. In addition all glazing is beaded internally.

Bespoke made timber windows

All our casement windows are made to order in our workshop located in Essex by our highly skilled team of carpenters.  We offer a full replacement service which includes a new internal window cill and architraves should they be required.  If you are looking to achieve a Georgian or cottage style casement window then we manufacture a 32mm glazing bar which can accommodate a double glazed sealed unit.

Glazing and coloured glass options

We have an extensive range of glass options for you to choose from which includes any design of leadlight, various obscure patterns, clear, coloured, toughened, acoustic sound deadening and laminated glass.

Safety is of paramount importance to us therefore all our low level and bathroom windows are fitted with toughened glass as standard.

 In addition our sealed units are all double glazed with softcoat low emissive glass, a warm edge spacer bar and are argon gas filled.

Finishing and paint colours

We finish our casement windows with three coats of microporous paint or wood stain, alternatively we can source a brand or colour of your choice.

Whatever your requirements we are always happy to discuss your plans and offer a free no obligation quotation.

Fensa Registered Company
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I Foster and Son Established 1987
Black Casement Window
Black and white casement wood window
Colourful orange wood window
white wood windows

Visit our Showroom

To see examples of all our timber windows, doors and box sash windows


I. Foster & Sons Limited
Spring Gardens Industrial Estate
Romford, Essex, RM7 9LD

Opening times

Monday to Thursday 8am to 5pm.
Friday 8am to 4pm
Saturday and evenings by appointment.


TEL: 01708 725325
TEL: 01708 728901
MOB: 07831 259156
EMAIL: [email protected]