SASH WINDOWS IN TIMBER
Traditional Box Sash Slider On Weights & Pulleys
Traditional Box Sash Slider On Spiral Balances
Traditional Box Sash Slider On Spiral Balances with Tilt Facility
Traditional Box Sash Slider On Weights & Pulleys
The Traditional Sash Slider on Cords and Pulleys is ideal for Heritage projects on listed buildings. Our ability to mimic single glazing or provide high-performance double-glazing in this timber window design ensures we can meet the needs of any client.
Ironmongery and working mechanism:
Complete with sash lift handles and central sash ring together with locking fitch fasteners (subject to location of the trickle vent) our ironmongery is available in solid brass or chrome. Operating on sash cords, ball race pulleys and sash Weights, our Sash Slider On Weights & Pulleys also has the facility to restrict the opening to 100mm which is provided using a twist lock positioned to allow the sash to open 100mm. Additional security can be provided using a second twist lock but this option is not available with internal horns.
Drainage:
The Dempsey V Traditional Box Sash Slider On Weights & Pulleys benefits from dry gasket glazed drained glazing rebates allowing any moisture ingress to ventilate to the outside. For high exposure areas, aluminium bottom beads can replace the traditional bottom beads and our internal teams are happy to advise to meet specific project solutions.
Weatherseals & Weather Rating:
Based on the design principles of our Dempsey V Traditional Box Sash Slider on Spiral Balances, the Dempsey V Traditional Box Sash Slider on Weights and Pulleys, although itself not tested, could be expected to achieve an exposure category of 2000+.
Energy Efficiency:
We have certified test results for our Timber Dempsey V Traditional Box Sash Slider On Weights & Pulleys demonstrating its ability to achieve a whole frame U-Value of 1.5. We are currently re-simulating our Windows as we have moved from a 20mm to a 24mm glass unit. This has the effect of improving the centre pane U-Value of the glass and therefore will also improve the whole frame, the results will be posted when available.
BS 7950 Security:
Although not currently available, it is expected that this Window will achieve the BS 7950 security standard within twelve months.
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Traditional Sash Slider On Spiral Balances
The modern solution to Vertical Sliders, our Spiral Balance system utilises hardware tested to over 10,000 cycles ensuring you receive a durable product.
The Dempsey V Traditional Sash Slider On Spiral Balances is suited for the new-build market as it does not require the deep reveals that are required on the traditional box sash and can in fact be fitted into a standard brick reveal.
Specification
Redesigned in early 2009 to improve its thermal efficiency, our Dempsey V Traditional Sash Slider On Spiral Balances now accepts 24mm glass units. The specification is detailed below.
Ironmongery & Working Mechanism:
Utilising pre-tensioned Spiral Balances with minor adjustments on site (if necessary) and available with lockable or non-lockable fitch fasteners, our Sash Slider on Spiral Balances is a perfect blend of modern technology whilst maintaining traditional aesthetics. Ironmongery options include sash rings, D handles and lockable restrictors.
Drainage:
Using the same principles as our other Timber product suites, the Dempsey V Traditional Sash Slider on Spiral Balances benefits from dry gasket glazed drained glazing rebates allowing any moisture ingress to ventilate to the outside. For high exposure areas, aluminium bottom beads can replace the traditional bottom beads and our technical team is happy to advise to meet specific project solutions.
Weatherseals & Weather Rating:
This product is fully weathersealed to achieve severe weather rating. Our window has been rated by BMTrada to BS 6315 (Part 1) 2004 with the results of its exposure category being 2000+ (a copy of the certificate is available on request).
Energy Efficiency:
We have certified test results for our Timber Dempsey V Traditional Sash Slider On Spiral Balances which demonstrates its ability to achieve a whole frame U-Value of 1.5. We are currently re-simulating our Windows as we have moved from a 20mm to a 24mm glass unit. This has the effect of improving the centre pane U-Value of the glass and therefore will also improve the whole frame. The results of this will be posted when available.
BS 7950 Security:
Although not currently available, it is expected that this Window will achieve the BS 7950 security standard within twelve months.
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Traditional Sash Slider On Spiral Balances With Tilt Facility
Launched in early 2009 and aimed specifically at the Commercial market, our Dempsey IV Traditional Sash Slider on Spiral Balances with tilt facility utilises the technology of our Dempsey V Sash Sliders on spiral balances with the addition of a tilt back facility for ease of cleaning making it the ideal high-rise solution.
Specification
In April 2009, we successfully tested this Window to BS 7950 demonstrating its suitability for high specification Commercial contracts. Please see below for a detailed specification of the product.
Ironmongery & Working Mechanism:
Using spiral balances, fitch fasteners and bar tilt restrictors, this Sash Slider On Spiral Balances With Tilt Facility combines traditional appearance with high-rise functionality. Both Top and bottom sashes tilt inwards to 40° -45° with the restrictor supporting a weight of up to 35kg's.
Drainage:
Using the same principles as our other Timber product suites, the Dempsey II Mock Vertical Slider benefits from dry gasket glazed drained glazing rebates allowing any moisture ingress to ventilate to the outside. For high exposure areas, aluminium bottom beads can replace the traditional bottom beads and our internal teams are happy to advise to meet specific project solutions.
Weatherseals & Weather Rating:
Although itself not tested, we would expect the Dempsey IV Traditional Sash Slider On Spiral Balances With Tilt Facility to achieve a 2000+ weather rating as it is based on the design principles of the Dempsey V Traditional Sash Slider on Spiral Balances.
Energy Efficiency:
The test results for the Timber Traditional Sash Slider On Cords & Pulleys demonstrating its ability to achieve a whole frame U-Value of 1.5. We are currently re-simulating our Windows as we have moved from a 20mm to a 24mm glass unit. This has the effect of improving the centre pane U-Value of the glass and therefore will also improve the whole frame. The results of this will be posted when available.
BS 7950 Security:
The Timber tilt window offers a high security level option. It is certified by BM Trada to BS 7950 and is registered "Secured by Design".
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