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Ventrolla | Specialist Sash Window Renovation and Performance Upgrade

Ventrolla | Specialist Sash Window Renovation and Performance Upgrade

Ventrolla Sash Window Specialists Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

  • BSI Kitemark

    BSI Kitemark

    Certificate type

  • QA Certificate

    QA Certificate

    Certificate type

Sash window renovation (timber)

Jump to:
+44 (0)1423 859300 www.ventrolla.co.uk

Application

Sash windows, timber windows

Description

Industry-leading wooden window repairs


Preserving the unique heritage and charm of period timber windows really is a priority to us, and with the right care and attention, original timber window frames can provide a lifetime of enjoyment. So, where possible, we will always suggest renovation over replacement via our tried and tested Ventrolla Perimeter Sealing System (VPSSS), while expertly repairing and replacing rotten sections with ease and finesse.


So, if your project has original timber windows that are draughtyrattling, or inefficient, we're sure our industry-leading window renovation services can help bring your timber windows back to life. After all, there’s no denying that timeless timber window frames play a crucial role in defining the character of period building facades and their interiors – so why should you or your client’s property be any different?


Ventrolla offer a sash window renovation service that negates the need to fully replace existing timber sash windows. This process involved renovating the existing windows and then installing Ventrolla's unique Perimeter Sealing System (VPSS) to eliminate draughts, and improving efficiency, so that all the charm and original character of sash windows can be retained.

 

Traditionally, a sash window requires a 3 mm gap around the sashes for functionality. Inevitably, this gap allows in draughts, dust and noise and is the source of annoying rattles. The installation into each window of the patented Ventrolla Perimeter Sealing System (VPSS) seals this gap and actually improves on the original by:

  • Eradicating rattles.
  • Eliminating draughts.
  • Minimizing dust and dirt ingress.
  • Increasing energy efficiency.
  • Reducing external noise.

 

All work is done from inside the building meaning so scaffolding is not always required – speak to our team to find out more. Windows are always left secure and weatherproof overnight.

 

Renovation and performance upgrade service:

  • Staff beads, parting beads and sash cords removed and discarded.
  • Sashes are eased by removing excess paint build-up, released and brought into the building.
  • Adjustments made to ensure min 3mm gap between upper sash face and parting bead face.
  • Mid rail and lower rail of bottom sash routed to profile of pile carrier.
  • Pile carriers are fitted into the mid and bottom rails of the lower sash and the new staff beads.
  • Where specified, Ventrolla Sash Removal System (SRS) is fitted - sash cord brake and detachable sash cord holder threaded onto each new sash cord. Sash edges are routed to allow mounting of invisible SRS.
  • Ventrolla parting bead is snapped into the new U Section installed into the existing parting bead groove.
  • Weatherfin pile weather-stripping (draught-proofing) size is expertly selected and inserted as appropriate to the width of the gaps to be sealed.
  • Sash weights are adjusted to balance sashes.
  • Sashes are re-hung and checked to ensure easy sliding.
  • New staff beads mitred, or butt jointed, and fitted by pinning brass screw and cup or easy release clips.
  • Exposed bare wood is painted with white acrylic primer to BS 5082.

 

Perimeter sealing system performance:

  • Air permeability: To BS EN 12207 Class 3 and BS 6375: 1-2009 (600 Pa) to withstand 71 mph winds, independently assessed by the British Board of Agrément (test report number 2756).
  • Draught strips: Tested to BS 7386.
  • Sound insulation: Independently tested and proven to fall within the 6–10 dB noise reduction range. Performance verified by Hanns Tucker Acoustic Engineers.

 

Ventrolla Wood Repair:

 

Ventrolla wood repairs are undertaken using Ventrolla VR90, formulated to give long-lasting wood repairs beyond those normally carried out using conventional polyester wood fillers. VR90 is a patented two-part resin system and is designed to be used to impart the original strength to sash tenon joints, fill large cavities in sills and act as a powerful adhesive. It completely bonds with the parent wood and flexes when the wood contracts or expands. To achieve this bond, all decayed wood is removed exposing only sound wood. This is then stabilised using VR90 WS solution which penetrates the wood fibres to attain the permanent anchorage for the subsequently applied VR90 filler.

 

Seal Shuts:

 

Windows can be sealed shut internally and externally with the Ventrolla Sealing and Pointing system VS10.


General information

Material

Timber

Length

Bespoke

Width

Bespoke

Height

Bespoke

WarrantyDescription

Five year

Uniclass

Pr_30_59_98_96 Wood window unitsPrimary

CAWS

L10/10 Wood windows

L10/210 Wood windows

Specification data - Wood window units Enhanced data

Third-party certification

British Board of Agrément (test report number 2756).

Product performance

-

Weather performance

-

Air permeability

To BS EN 12207, Class 3 and BS 6375: 1-2009 (600 Pa) to withstand 71 mph winds.

Resistance to wind load

Draught strips tested to BS 7386.

Environmental

-

Acoustic performance rating

Independently tested and proven to fall within the 6–10 dB noise reduction range.

 Performance verified by Hanns Tucker Acoustic Engineers.

Frame

-

Finish as delivered

Exposed bare wood is painted with white acrylic primer to BS 5082.

Operation

-

Type

Manual.

Sash removal system

Not required.

Required.

The Sash Removal System is a unique hidden system which allows the quick and easy removal of both top and bottom sashes internally. Staff beads can easily be detached from the window giving access to the bottom sash. Using the plastic cord holder, the sash cord can be unclipped from the window which allows the bottom sash to be completely removed. The parting beads can also be removed, allowing access to the top sash. The Ventrolla sash removal system allows all components of the window to be removed internally and brought into the building for convenient maintenance and painting, thereby avoiding the need for external scaffolding.

Sill replacement and lower box assembly

Not required.

Required.

Replacement sills can be provided to match original profiles. The original bottom section of the box linings is removed and Sill trenches are cut, the outer and inner linings are spliced to facilitate a flush and water tight finish.

Ironmongery

Not required.

Replace existing.

A wide range of specialist locks and catches are available.

Literature

Ventrolla Brochure | Sash Window Restoration

Ventrolla Brochure | Sash Window Restoration

Ventrolla Technical Specification | VPSS & VR90

Ventrolla Technical Specification | VPSS & VR90

Ventrolla Brochure | Window Hardware

Ventrolla Brochure | Window Hardware

Case studies

Ventrolla | St Leonard’s Hospital | Hackney, London

Ventrolla | St Leonard’s Hospital | Hackney, London

Ventrolla | Sash Window Restoration & Double Glazing | Holmfirth, Yorkshire

Ventrolla | Sash Window Restoration & Double Glazing | Holmfirth, Yorkshire

Ventrolla | Sandhurst Royal Military Academy | Grade II Listed Sash Window Renovation

Ventrolla | Sandhurst Royal Military Academy | Grade II Listed Sash Window Renovation

Third party certifications

  • Air permeability: tested to BS EN 12207 Class 3 and BS 6375 (600 Pa), test report 2756 : Weatherfin Pile (Draught proofing) testing
  • Draught Strips (Weatherfin Pile): Tested to BS 7386
  • Hanns Tucker Acoustic Engineers : Sound Insulation: Independently tested by and proven to fall within the 6–10 dB noise reduction range (tested on single glazed sashes)

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