T J Ross News

It is rewarding to know that we here at T J Ross have achieved approval of our ‘Lamb’s Tongue’ profiled slim bar astragal Sash and Case windows to be fitted to a Grade A Listed Building in Manor Place, Edinburgh.

Manor Place

It is exciting times as we are also in discussion with Edinburgh City Planning along with the clients’ Planning Consultant whilst they consider our slim bar system for another profile of astragal, for approval in another Listed Building in the New Town.

We’ve spent a considerable amount of time on research and development of this addition to our already widely used ‘ogee’ profile slim bar astragal (which, also received approval for installation in a Grade B Listed Building in Edinburgh.

We have achieved an overall width of 17mm for our Lamb’s Tongue astragal which is found frequently in existing single glazed sash and case windows in Listed Buildings and buildings within Conservation Areas.

Our next challenge is to reduce the overall width of our ‘Ogee’ profile slim bar astragal from 20mm to the same as our ‘Lamb’s Tongue’ which is 17mm wide.

Unlike the single glazed windows our astragals do not require the paint finish to be applied to the first 2mm to 3mm of the glass adjacent to the putty, which was/is required to help retain the linseed oil within the putty and effectively make the timber astragal width of 17mm actually have a ‘daylight’ width of 21mm and 23mm.

If the painters of the past have kept the over painting on the glass to 2mm to 3mm, invariably the overall ‘daylight’ width has been increased (in many cases) to 28mm to 30mm wide, losing the elegance of the thin astragal that the workshop joiner worked so hard to achieve when he made the original window.

For more information on T J Ross Sash and Case Windows, our Slim bar profiled astragal or any of our other products telephone us on 01337 860318 or email: enquiries@tjross.co.uk

T J Ross Sash and Case windows on the web


How to maintain your timber windows

Here at TJ Ross we pride ourselves on designing and manufacturing high performance windows.  All our windows are pre-finished prior to delivery or installation.  We want our windows to last for as long as possible, so in order to do this we dry fit all the ironmongery ie fit all the locks and handles etc. to the bare frame before removing them again in order to apply a high quality preservative manufactured by the Teknos, the market leader in coatings for external joinery, in our own workshop.  The Teknos preservative coating has a high quality of elasticity which means that it works like ‘Goretex’ for wood.  The handles and locks etc. are then re-fitted along with the glazing to ensure that every part of the timber is completely sealed and water tight.

Seal the cills!

We sell windows on a supply only basis to joiners and building contractors.  The main differences here are:

  1. Your joiner will have taken all the measurements, not T J Ross
  2. Your joiner will install the windows not T J Ross

If the measurements taken are accurate, then the window and window cill will be a perfect fit.  But, if for a number of reasons it doesn’t fit – the joiner may need to cut the window cill after it has been made, exposing the timber at the end of the cill allowing water ingress into the timber.

As a result of this, all ‘supply only’ T J Ross windows are delivered with a small pot of micro porous preservative in the colour or stain applied to the window – just in case the cill needs to be cut to fit.

Provided the sealant is applied to the end that has been cut BEFORE installation takes place, then the window will remain watertight and efficient.

Good installation practice avoids future damage and ensures your windows will last and saves you money both in reduced heating bills and window costs.