Timber sash and case windows grace many a household. As time passes, however, these distinctive windows will demand a little extra care and attention.
Sash cords break, draught seals degrade and bottom rails decay through neglect. The window rattles, sticks then does not close properly.
Woodfellas are seasoned specialists in timber sash and case windows, working with Scottish homes across Helensburgh from our workshop for more than two decades.
We restore , and even craft entirely bespoke replacements when a window is beyond saving!
Contact to us on 07920 057592 or via our contact page to book a complimentary visit and written quote.
What is a timber sash and case window
The heading indicates the purpose.
The sash is the moveable glass panel. The case is the empty box frame constructed within the wall around the window opening.
Contained within each case are two counterweights, one corresponding to the upper sash and one to the lower. These weights are suspended from sash cords that run over pulley wheels positioned at the topmost section of the frame.
Lift the lower sash up and the weights will drop on the opposite side. Release it and they will keep the sash firmly in place.
Whilst casement windows open outwards on hinges, sash and case windows work by sliding vertically instead.
Both sashes glide independently of one another, meaning you can open them from the top, the bottom, or indeed both at once. Your home enjoys superb ventilation control without any panel swinging inward into the room or outward towards the street.
When the mechanism is functioning correctly, you barely detect it whatsoever.
When the cords snap, as they commonly do after years of everyday use, the sash falls and remains in the position or becomes increasingly hard to operate.
That is precisely the point at which Woodfellas make their their entrance.

Timber sash window services and refurbishment
Not every period sash window calls for the same solution!
Our sash windows team in Helensburgh genuinely takes the time to understand exactly what your windows need, so they can advise whether repair or refurbishment is the best route for you!
Window draught-proofing
When a window remains structurally intact yet fails to deliver on performance, a complete refurbishment becomes the most sensible and most worthwhile course of action.
Our experienced tradesmen can enhance your glazing and fit draught-proofing across with traditional joinery methods well suited to traditional windows!
A sensitively renovated sash and case window in your Helensburgh home should appear as though it was always entirely and naturally meant to be there.
Effortless to operate, silent within its frame, and welcoming in the space it inhabits. That is the level we work towards with every individual installation.
Sash cord and weight replacement
Replacing sash cords is the most frequent repair job we attend for!
When the cords snap, the weights hang unhelpfully inside the case with absolutely nothing linking them to the sash.
We remove the pocket cover, remove the weights, fit new sash cords, and adjust the pulleys correctly.
Whilst carrying out your repair, our experts will make sure to closely assess the complete condition of your window, ensuring that every detail is carefully examined and nothing is overlooked.
Timber repairs
The bottom rails and sills take the full force of Helensburgh’s severe weather conditions.
Where the rot is limited to just one section of the rail, we carefully take out the damaged timber and insert fresh new sections using carefully matched traditional wood. The repair integrates smoothly with the surrounding timber and the rest of the original window remains fully intact!
We are strongly of the opinion that a window which stays structurally sound should never be sacrificed simply because an single issue impacts only one part of it.
Supplying and fitting bespoke sash windows
When a window is no longer economical to repair, we manufacture new sash windows to your exact specifications in our workshop and supply and install them at your premises.
Every single replacement window is expertly crafted and made to measure in either hardwood or treated pine. We put in serious effort to replicate the profile, proportions and glazing bar pattern of your original windows!
As wooden window manufacturers with pride based in Helensburgh, we provide and fit new sash and case windows throughout the area, combining quality materials with time-honoured traditional techniques.
Our collection of sash and case windows caters for everything from one single replacement sash right through to a full set of brand new windows for a listed building!
Double glazing and enhanced security hardware are provided as standard features.
Double glazed sash windows in Helensburgh
Transform your home and day-to-day living with stunning double glazed sash and case windows!
Our slimline sealed units are designed to fit neatly within the original glazing rebate, preserving the sash profile and glazing bar pattern entirely without modification.
From the exterior, the timber window looks the same to the original.
Here is the reason so many homeowners throughout Helensburgh are deciding to replace their traditional sash and case windows with double glazing.

Energy efficiency
Our glazing service delivers a significant boost to your home’s energy efficiency.
This means reduced energy bills as your heating system works less to keep a comfortable temperature in your home.
Noise reduction
Sound attenuation is a further advantage that homeowners notice almost immediately.
If your home sits on a busy road or close to a major junction, double glazed sash windows cut down on noise transmission significantly!
Sash and case windows in Scotland’s conservation areas and listed buildings
Scotland’s stunning architecture holds an remarkable depth of historical heritage within it.
Conservation areas safeguard local character, and sash and case windows form 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 designated areas, or if it has listed building status, the regulations governing window replacement are specific and must be understood before any work is commissioned.
We have been working on properties located within conservation areas for more than twenty years.
Having developed a strong understanding of council expectations, we are well positioned to guide you through the consent process and carry out window restoration or replacement work that meets all requirements efficiently and without unnecessary delays.
For a team that knows listed buildings and conservation area projects just as well as they know the windows themselves, reach out today to book a complimentary site visit and written quotation.
Sash and case window faults we fix in Helensburgh
Sash failing to hold its position when lifted
Replacing broken sash cords is the repair our skilled team carries out most often on sash and case windows, and where the window itself remains in good condition, it is a wonderfully easy task for our skilled craftspeople.
Draughts and rattling
The weatherseal between the sash and the frame has deteriorated or was simply just never installed in the first place. When this gap exists, it is also quite common for the sash and case window to shake noticeably in the wind as a direct result of that same opening.
Draught proofing done as part of a service call helps address all issues in a one visit.
Rotten bottom rail
The bottom rail of the lower sash is the most highly vulnerable part of a sash and case window.
Where the decay is confined to a particular section of the rail, we carefully remove the compromised timber and join fresh, perfectly matched material seamlessly into its place.
The rest of the original window remains completely undisturbed.
Window stuck shut by paint
Many years of paint layered onto the sash to protect it from Scotland’s persistent wet weather can eventually sealing it firmly to the frame!
We release the sash, clean all surface areas, adjust the fit where necessary, and return the mechanism to proper working order.
The cords and pulleys are carefully inspected throughout the process, saving you from multiple repair jobs down the line.
Single glazing
Original single-glazed panes let heat to escape rapidly and permit street noise to pass through. We install double glazing whilst maintaining the visible appearance of the window frame completely.
Sash and case windows Helensburgh FAQs
Is it better to refurbish sash and case windows or replace them?
So what’s the best answer? It really comes down to the condition of the window itself! If the box frame is solid and the sashes are structurally sound, refurbishment is certainly worth considering. You get fantastic performance without sacrificing any of that original character. But if the frame has seriously deteriorated or the timber has rotted beyond saving, replacement is frankly the more sensible and practical option.
Can sash and case windows take double glazing?
Yes. We use slim profile sealed units that sit within the existing glazing rebate without having to widen the sash or alter the glazing bar pattern. From the outside, the window looks identical to the original.
Get a free quote for sash and case windows in Helensburgh
Whatever your sash window needs may be in Helensburgh, from repair and restoration through to complete replacement, Woodfellas has the expertise to take care of everything.
Contact with our knowledgeable team today and we will walk you through the most suitable solution for every window in your home. Every quotation we offer is complimentary, presented in writing, and carries absolutely no obligation. Should you choose to proceed, we will organise everything entirely to suit your schedule.
Every window and door is crafted in our own workshop, using traditional techniques, and installed by our skilled skilled joiners across Scotland.
Reach out to us now by phoning 07920 057592 or by filling in the form on our contact page, and we will respond to you within 24 hours.