Wooden sash and case windows grace any household with lasting charm. Yet as the years pass, these beautiful windows inevitably call for a little additional care and attention.
Sash cords break, the draught seal deteriorates, and the bottom rails start to rot through years of neglect. The window shakes, then sticks, then eventually fails to close properly.
Woodfellas are experienced specialists in timber sash and case windows, serving Scottish homes across Port Glasgow from our workshop for over two decades.
We repair, and create bespoke replacements when a window is beyond saving.
Reach us on 07920 057592 or get in touch with us via our contact page to arrange a free visit and written quotation.
What is a timber sash and case window
The heading tells you precisely how it functions.
The sash refers to the sliding panel of glass itself, while the case is the hollow box frame that is built into the wall surrounding the window opening.
Inside each case sit two weights, one serving an upper sash and one serving the lower. They are suspended on sash cords that pass over pulley wheels fitted into the top of the frame.
The lower sash rises as the counterweights descend on the opposite side, and after being released, they hold the sash firmly held in place.
Whilst casement windows open outwards on hinges, sash and case windows work by moving vertically.
Both sashes move independently, giving you the freedom to open from the top, the bottom, or both at once. You get excellent ventilation control throughout your home, and with no panel swinging into the room or out towards the street, it is as useful as it is smart!
When the mechanism is functioning perfectly, you barely think about it twice!
When the cords eventually break, as they commonly do following years of regular use, the sash will either simply drop and remain in that lowered position or become increasingly difficult to operate.
That is precisely where Woodfellas steps up.

Timber sash window services and refurbishment
Each traditional sash window demands its individual approach.
Our sash windows team in Port Glasgow takes the time to truly understand the particular requirements of your windows, ensuring they can confidently recommend whether a repair or a full refurbishment is the most suitable course of action for you.
Window draught-proofing
When a window remains structurally intact yet fails to deliver optimal performance, a full refurbishment presents itself as the most logical course of action.
Our experienced joiners can upgrade your glazing and fit draught-proofing across with joinery techniques ideal to traditional windows!
A beautifully restored sash and case window in your Port Glasgow home should seem as though it was always intended to be there!
Effortless to open, quiet in the frame and warm throughout the room. That is what we are aiming for every time!
Sash cord and weight replacement
Sash cord replacement remains our most frequently performed repair.
When the cords break, the weights remain idle within the case with no connection to the sash.
We reach the pocket piece, remove the existing weights, install fresh sash cords, and set the pulleys precisely.
Whilst carrying out the work, our team will consistently take the time to thoroughly check the full state of the window, ensuring that absolutely nothing is ever missed.
Timber repairs
Port Glasgow’s bottom rails and sills endure the most severe weather elements.
Where rot is confined to part of the rail, we take out the damaged timber and splice in new sections using matched traditional timber. The repair blends seamlessly with the surrounding wood, leaving the rest of the original window fully intact.
We are firmly of the opinion that there is no need to sacrifice a window that remains structurally sound simply because an isolated issue affects only one section of it.
Supplying and fitting bespoke sash windows
When a window is beyond economical repair, we make brand new sash windows to your precise specifications right in our own workshop and supply, then fit them at your home!
Every replacement window is made and made to measure in hardwood or treated pine. We meticulously match the profile, proportions, and glazing bar pattern of the original.
As timber window manufacturers based in Port Glasgow, we supply and install new sash and case windows across the region, using premium materials and time-honoured craftsmanship techniques.
Our sash and case window range spans everything from a single replacement to a complete new window installation for a listed building.
Double glazing and enhanced security hardware are provided as standard!
Double glazed sash windows in Port Glasgow
Elevate your property and day-to-day living with stunning double glazed sash and case windows!
Our units are slim-profile sealed units that fit within the original glazing rebate without altering the sash profile or glazing bar pattern.
From the outside, the window appears identical to the original!
Here is the explanation why property owners across Port Glasgow are opting to upgrade their traditional sash and case windows with double glazing.

Energy efficiency
Our glazing service provides a substantial boost to your home’s energy efficiency.
This translates directly into reduced energy expenditure, as your heating system need not work as hard in order to keep a comfortable temperature throughout your home.
Noise reduction
Reduced sound is an additional advantage that homeowners often notice very quickly.
If your home sits on a busy road or close to a major junction, double glazed sash windows will reduce noise transmission substantially.
Sash and case windows in Scotland’s conservation areas and listed buildings
Scotland’s architecture is breathtaking, carrying with it a highly fascinating historical legacy.
Conservation areas safeguard local character, and sash and case windows make up a vital part of that heritage. Preserve your building’s character through specialist timber window restoration by Woodfellas.
If your property is located within one of these locations, or is a listed building, specific rules govern window replacement and must be checked before any work is started.
Our expertise working on properties within conservation areas covers more than twenty years.
We know precisely what the council needs, how to manage the consent process effectively, and how to restore or replace windows in full accordance with those requirements without avoidable delays or revisions.
For a team that is familiar with listed buildings and conservation area work just as closely as they understand the windows themselves, get in touch today to book a complimentary site visit and written quotation.
Sash and case window faults we fix in Port Glasgow
Sash not staying in the raised position
When it comes to sash and case repairs, changing a broken sash cord is the task we encounter most frequently, and provided the window itself is in good condition, it is a perfectly straightforward job for our skilled team.
Draughts and rattling
The draught seal between the sash and the frame has degraded or was simply never installed. A sash and case window suffering from draughts will also tend to rattle noisily in the wind due to the same gap!
Having draught proofing dealt with as part of a full service visit helps resolve all issues in a single , smooth sweep.
Rotten bottom rail
The bottom rail of the lower sash is the most vulnerable part of a sash and case window.
Where the decay is restricted to a specific portion of the rail, the affected timber is gently taken out and replaced with new sections, jointed seamlessly using closely matched material.
The remainder of the original window remains entirely undisturbed.
Window stuck shut by paint
Many years of paint layered onto the sash to shield it from Scotland’s persistent wet weather can eventually sealing it firmly to the frame!
We release the sash carefully, clean and prepare the surfaces carefully, carry out any required adjustments to the fit, and return the mechanism to full working order.
The cords and pulleys are carefully inspected throughout the work, sparing you from dealing with numerous repair jobs down the line.
Single glazing
Original single-glazed panes lose their warmth with surprising ease and offer little protection to the clamour of the street outside. We replace them with double glazing whilst retaining every detail of the window’s outward appearance completely intact.
Sash and case windows Port Glasgow FAQs
Is it better to refurbish sash and case windows or replace them?
It mainly comes down to the condition of the existing window structure. Where the box frame remains sound and the sashes retain their structural integrity, refurbishment is an ideal course of action. You preserve a window that performs well whilst retaining its original character entirely. However, where the frame has suffered considerable deterioration or the timber has rotted beyond any reasonable repair, replacement becomes the more practical and sensible route forward.
Can sash and case windows take double glazing?
Yes. We fit slim profile sealed units that fit within the existing glazing rebate without having to widen the sash or alter the glazing bar pattern. From the outside, the window appears the same to the original.
Get a free quote for sash and case windows in Port Glasgow
Whatever your sash window needs may be in Port Glasgow, from repair and restoration through to full replacement, Woodfellas has the expertise to look after everything.
Get in touch with our knowledgeable team today and we will walk you through the best suited solution for every window in your home. Every quotation we provide is free, presented in writing, and carries absolutely no commitment. Should you choose to proceed, we will organise everything entirely around your schedule.
Every window and door is made in our own workshop using traditional methods and fitted by our own joiners throughout Scotland.
Call us now on 07920 057592 or complete the form on our contact page and we will respond within 24 hours!