Wood double glazing sash windows

The bars in this image are 18mm and though 4mm sounds like an insignificant amount, if manufactured larger would completely changes the aesthetics of this window. Below is our hand crafted double glazed sash window replica installed into the original frame:. Our double glazed sash windows are built with a solid glazing bar construct inside, and then we laminate the glazing bar externally, giving the overall effect of a sash window that has many panes of glass.

We feel this construct gives a better looking, more traditional feel. With the glazing bar taken care of and the glass sight lines accurately replicated, we also try to keep the stiles to an absolute minimum as well, This helps the overall feel of the window and helps maintain that authentic look. Traditionally, and very typically, these are constructed between 44mm and 50mm. We construct them typically at 53mm so despite providing all the benefits of a modern double glazed sash window, they look almost identical.

The only way to tell our windows are actually double glazed is to look inside at the double glazed unit. Do you notice the little circular looking grommet inside the double glazed unit? This is where the Argos gas filling is inserted. Pilkington are producing some really amazing energy efficient glass. We offset the mortice and tenon to provide additional structural strength and then a 42mm sash is capable of holding a 4mm Low E — 12mm Argon filled air gap — 4mm clear float 4mmmm-4mm should you require the extra cavity depth.

The larger air cavity is more effective at heat and noise insulation, although once you have any of the following sizes; 4mm-4mm-4mm , 4mm-6mm-4mm , 4mm-8mm-4mm , or 4mmmm-4mm it is not easy to tell apart as they are all wonderfully thermal and noise efficient. I certainly do not believe I can tell a unit depth by listening to a bus pass or someone shouting outside.

It is fairly clear technically though, that a 4mmmm-4mm unit will be more effective than a 4mm-4mm-4mm as there is a large step up in air cavity. This would provide a 4mm soft coat low-E, 6mm cavity, 4mm unit. So a total of 14mm which is pretty good, thermally efficient, and not too bad for the noise. Of course, the larger the air gap, the better the acoustic performance.

Heat is normally pretty well covered with a standard 14mm unit but for certain, the bigger the air gap, the better the noise reduction. One clever way of working with the 32mm frame is to have a rebate on the top sash which pushes the top sash around the lip of the front cheek and then manufacture a thinner staff bead internally to allow for the extra space. Below is an another image of a replacement double glazed sash using existing joinery. As we can see, the slender profiles are retained and the window looks very traditional and impossible to tell the window has been double glazed at any distance at all — the picture is taken just a couple of metres away.

In stark contrast, if you look at the right hand panel top pane — across the road from some 30 metres you can see the nasty result of UPVC which would of cost about the same as the service we provided, if not more! We supply our double glazed sashes in softwood and hardwood. We can provide the sash finished bare timber, stained the stain of your choice , primed, undercoated, or with a gloss finish.

We provide replacement double glazed sash windows in softwood and hardwood. Full double glazed sash window replacement allows us to install our largest, most effective double glazed unit, 4mm Low E — 20mm Argon filled Cavity — 4mm clear float This unit represents excellent U-Value ratings and is way beyond the standard requirement to obtain Building Approval or a Fensa certificate if you prefer.

Full window installation carries an insurance backed guarantee so you have full piece of mind for the 10 year warranty period. It is expensive and there is no real payback on heating as a result of the upfront costs but there are plenty of other benefits should you prefer complete double glazed replacement.

New windows come fully finished and covered by a ten year insurance backed guarantee, and you can have a whole host of glazing options to improve thermal and acoustic properties. You can tell this by reflection alone. By contrast on the right hand side this lovely curved window was specified single glazed to match the original like for like. We can manufacture absolutely any curved head sash window, bowed sash windows, or marginal light. Whatever the joinery requirement we can always manufacture in house to high standards and normally delivery within eight to ten weeks is possible, even on complex projects.

We will also undertake structural alterations to improve the look of properties and can help with building aspects of a job as well.

This client wanted to improve the look of their property with a nice bay window. This involved opening up the brickwork, lintels for support, as well as ground support as well.

With all measurements taken and planning consent approved to make this Victorian property look traditional as it once was, we set about making new double glazed sash windows and then fitting.

New sash windows look amazing and work perfectly. They are extremely secure and will not require maintenance for many years to come. They will undoubtedly be marginally better than using original joinery at thermal and acoustic insulation. We are not against Replacement wooden double glazed sash windows, we just feel there are other more viable options to consider prior to this costly exercise.

Listed buildings require more sensitive restoration and upgrade , we fully understand what planning are looking for. We will install slim sealed units into the original sash as to not effect the appearance at all. Please note! Not all sashes are created equal and thorough site assessment will be required to ensure the viability , the structural integrity, and the listed sash window aesthetics remain entirely as was.

There are two important factors in determining the viability of the install. Firstly the sash needs to be of sufficient depth on the original rebate. The next important factor to consider is the width of the rebate. Contact us today to learn more about our services and how we can solve your window requirements. Send us an email Our showrooms.

Quick Search. Home » Sash Windows. Made to Measure Wooden Double-Glazed Sash Windows Timber sash windows are and have always been one of the defining aspects of some of the most beautiful homes that have been built and reside in the UK. Traditional Wooden Box Sash Windows A traditionally operated timber sash window for conservation areas and new builds, which capture historical detail while providing modern acoustic and thermal performance.

Spring Balance Sash Window The spring balanced sash window, offers a more economical solution and is often used in new builds where a flush reveal has been detailed by the architect. Traditional Single Glazed Sash Windows A solution where the property is listed or other restrictions prevent the use of double-glazing. Putty glazed vertically sliding wooden sash windows with a single sheet of glass. Traditional Appearance with Modern Technology Our high-performance wooden sash windows are all made from sustainable wood sources.

Timber Choices: We create our windows from multi-layered engineered timber. Glazing Choices: Our windows are predominately double glazed, with the option to order triple or acoustic glazing.

In some conservation areas, we need to maintain single glazed windows for aesthetic requirements. You want the performance of a modern upvc double glazed sash window while retaining the charm and character of your original timber sash windows. And who can blame you. Homeowners loved the thermal and sound deadening qualities that double glazed windows offered. Beautiful period wooden sash windows that had survived from the Edwardian , Victorian, and even Georgian eras were ripped out and dumped in skips to be replaced with less attractive white upvc imitations.

The problems with original sashes, and the reason people were so willing to skip them, was the thin glass and the gap necessary for the sashes to slide up and down. These two features of period windows meant they were thermally inefficient and often draughty which in turn leads to rain water leaking through and rot setting in. Add to that rattling in the wind and not being able to shut out the noise of the street.

You can see why people flocked to the alternative and were willing to put up with the aesthetic flaws in favour of modern performance. The glass used in old sashes is very thin, 2mm — 4mm is common.