Sheet Acrylic

Clear acrylic

Tinted acrylic

Acrylic items

Windows and hatches

Screw fixed windows

Weatherstrip windows

Hatch acrylic

Porthole lenses

Vetus hatches and ports


Clear Acrylic

Tinted acrylic


Indiarubber channels

Sponge rubber seal

Sliding & hinged windows

Patent weatherstrip

Bedding seals

Finishing trims


Self tapping screws

Machine Screws


Various fixings





Westerly yachts

Polishes and Sealants



Catalogue and
Info sheets





Westerly Owners Page
Contact us

Westerly porthole

Some Westerly specific items all together.

This is a new page so do let us know if there is anything else you think should be here. There are links on the left to generic items like hatch acylics and washboards.

Postage and packaging where not listed will depend upon the size and weight of the parcel.


There are two types that I know of, one sort had a frame around the opening part (I need someone to send me one of these so I can strip it down and make a template of the acrylic) and an unframed acrylic version, illustrated on the left and listed below

ITEM LENS SIZE PRICE P&P Click for drawing
Westerly clear, tinted grey or bronze 183x135mm £26.25 £4.00
Replacement lense with new knob to replace broken clasp 201x135mm £43.50 £4.00  

• Just unscrew the old windows and screw on new ones for instant clear vision
• Clear, bronze or smoke grey tinted acrylic with polished edges
• Other sizes (to order)


By the metre 10mm dia £4.25/m

£5.50 <11m

Ready to fit unframed opener 10mm dia. x 565mm circ. £7.50 £3.50
Ready to fit framed opener 10mm dia. x 540mm circ. £7.50 £3.50

Replacement acrylic for the 'Marsh Walters' style of windows. If your window frame has only one join you will need to send it to me to be done, for those of you lucky enough to have a frame that splits into two parts there is advice on replacing the acrylic yourself here Refurbishing Framed Windows however we can also do these for you (see below)
6mm thick clear acrylic 611x152mm with radius corners
6mm thick clear acrylic 612x151mm with radius corners
6mm thick clear acrylic 608x150mm with radius corners
As you can see, although all the windows look alike over the years they changed suppliers and there are slight variations in the size and corner radius. You will not know which size you require until you have dismantled the window
£25.00 each

Refurbishing Framed windows
Windows stripped down, cleaned and reassembled, then wax polished and supplied with Scapa 3507 bedding tape for refitting to the boat without using mastic.

Marsh Walters style frames 661x208mm with safety glass.

£78.83 each
Marsh Walters style frames 661x208mm with clear acrylic.
£106.33 each
Marsh Walters style frames 661x208mm with tinted acrylic.
£110.53 each
Cleaning and polishing backframes
£20.00 per window

Window fixings
Most earlier Westerly yachts have framed windows held in by 3.5mm screws and interscrews (or 4BA threads on very early boats).
The original interscrews and screws were made of chrome plated brass and you will probably find if you remove a window that some of the interscrews have failed. Others will break when you try to tighten them up again. They are all likely to be blocked up with old sealant.
We have had a special production run of stainless steel interscrews made with 3.5mm tapping. Feed back showed that Westerly owners were concerned that our other interscrews did not have slots in the heads so we specified slots with the new batch of fixings. In order to machine the slots they had to make the heads deeper.

Fixings Kits
Kits contain stainless steel interscrews, countersunk screws in 10mm, 12mm and 16mm lengths, Scapa 3507 bedding tape and a fixing guide.
With a drill enlarge the holes in the clamping frame and the grp to 7mm or 17/64" (not the frame with the glass!)

£11.00 Kit for windows requiring 10 screws
£13.20 Kit for windows requiring 12 screws
£22.00 Kit for windows requiring 20 screws
£33.00 Kit for windows requiring 30 screws
If you wish to purchase the interscrews singly and without the machine screws they are 1.00 each
1st class postage and packing for up to five kits 4.00