02 Please note the Vent Units or the Canopy Units can be fitted in conjunction with the Greenwood Acoustic window ventilator (White ) Quantity. Acoustic Ventilation is used in rooms which require ventilation but still a high level of soundproofing. Share. Trickle vents built into the frame will allow noise to seep into the room even when the window is shut tight. The EAQ42W is one of the best performing acoustic window ventilators available in the UK. Internal and external grilles U. The SF Xtra is factory-made to standard sizes. 4080mm² measured area 2500mm² Equivalent Area. Ventilation levels 47% RH - 2500mm ventilation area 65% RH - 3815mm 2 v entil ao r ENERGy SAVER, HUMIdITy SENSITIVEBuilding regulation changes from 15th June 2022 – trickle vents. RW Simon Trickle Vents. Add to Wishlist. co. £3. Sound reduced by 43 dB with internal grille fully open and 50 dB when closed ( Dn,e,w) (tested by BRE Acoustics) 8,500mm² (85cm²) equivalent area. Reduces sound by 45 dB with internal grille fully open and 50 dB when closed (Dn,e,w). I discuss sound mazes in more detail in the article linked above, but watch this video for steps on how to build a sound maze. These may be required by building regulations in. Aluminum canopy. External canopy grille (Glidevale Ultravent Grille, supplied separately) provides weather and 4mm insect ingress protection. V. UK Manufacturer of home mechanical ventilation systems and hardware for windows and doors, including handles, hinges, trickle vents and extract fans. There are two width variants, one for use over a 13mm slot, the other for a 16mm slot. Bi-Fold Door Hardware. 73 £ 4. Making a difference in Indoor Air Quality. New building regulations that come into effect from 15 th June 2022 have implications for any windows that are installed after this date. 85 +VAT. Customers have expressed concern about acoustic insulation, but a home can be ventilated without the window being opened. Hit & Miss: 271mm L x 95mm H. Greenwood Acoustic window ventilator (White ) Quantity. Nineteen different Trickle Vents are reviewed from some of the performance aspects in this paper. Fixing holes in the frame and cover caps. Yale SlimVent Trickle Vent Set (White, 4000EA) Brand: SD Hardware. Ventilation can be provided through any appropriate means. airvent SM 1000+ Trickle Ventilation. VAT. Q. Buy Now. Background - usually provided by trickle vents installed within a window frame ; Purge - either natural (by opening a door or window) or mechanical . Learn More . . Trickle vents are activated with a single finger and provides passive. Whilst trickle vents are published with acoustic values this can often be misleading due to the criteria on which they are valued. Burglar-proof performance is desired in some cases. Achieves Building Regulations’ EA requirements. The 2500EA and the 5000EA equivalent area vents are the smallest acoustic window vents on the market and achieve the best acoustic performance for window ventilators in the UK – up to 45dB (A) It is a simple and adaptable solution for windows in residential dwellings that have external noise issues or planning restrictions. For effective ventilation, our Rose Collection sash windows are available with trickle vents fitted to the top of the sash. Natural daylight, as well as natural ventilation, are recognised factors in improving the wellbeing of a building’s occupants. 400mm long with 2 x 13 x 162. timber or woodaluminiumclad window systems. Flush fit | Brown ABS Plastic | 300mm long x 20mm wide x 10mm deep (2,700 mm2 free area). 66 Inc. Use code 500Save 💵 Links. Environmental Noise Assessment K. When used correctly, trickle vents do not contribute excessively to heat loss. These pared-down pieces of kit (measuring between 412mm and 250mm) are the smallest acoustic window vents on the market, yet they offer unbeatable noise-reduction (up to 45dB) and impressive. Universal Compatibility: Ventsys Adjustable Trickle Vents are compatible with various window types, uPVC, wood and aluminum. It is the shortest vent available to provide 5000mm² EA. Glidevale Ultravent Trickle Ventilator External Canopy Grille - White - External canopy grille provides weather protection and 4mm insect ingress protection. Glidevale Protect TVES4dB Acoustic Energy Saver Humidity Sensitive Trickle Vent - Trickle Vent . Forum Member. 15. Our window vents are subtly integrated into your façade — and their acoustic damping comes as a bonus. The kitchen has an extractor vent , also a vent for the boiler and trickle vents on the double glazed windows. Any cooling of the internal temperature in winter from a trickle vent is marginal. Acoustic background ventilator for a habitable room. Specifying one different pane thickness will increase sound insulation. External grille provides weather protection and insect ingress. 1. The Acoustic Window Trickle ventilation range offers a noise reduction of up to 41db which can now make it possible to obtain planning permission for new developments near a busy road, train line or an industrial site that would otherwise have been refused. Checkout Now. TTF Slimline Ventilator. Discover how acoustic ventilation can improve indoor air quality and reduce noise pollution with Greenwood, the leading air ventilation system manufacturers in the UK. Unfortunately, there’s no hiding the fact that they can look unsightly. The first stage of the acoustic assessment described by ProPG is to. £3. Enjoy fresh air indoors with window vents. Replacement windows should be fitted with trickle vents regardless of whether the windows being replaced had vents in them or not if no background ventilation alternative is being installed. The ProSound Acoustic Vent system in white is a high performing acoustic background ventilator, providing up to 55dB reduction (Dn,e,w) and suitable for wall thicknesses of 140mm and above. Titon SF Xtra Flat Fit Vent (surface mounted). These are hygro- or pressure-controlled devices, equipped with a connector and an acoustic hood. Ventilation helps you to protect the building fabric long-term, save energy and retain the value of your property. Enquire now, call 01805 623721. Visit our website now. [report] [news] Monday 29th January 2018. Now, firstly, I know trickle vents are installed to ensure a property stays ventilated, etc, but mine are driving me mad! I honestly don't see the point in having double glazed windows that the benefits of which are to be energy and noise efficient, then whack a hole in the frame that negates the benefits of both!Cover the sides and top and bottom of your air vent with acoustic foam as you go. Acoustic Information (31) User Guides (47) Fault Finding (13) Calculators (1) Test Results (36). W. Trickle vents ruin any acoustic performance gains. The latest addition to the Simon acoustic range. Ventilation building regulations have recently changed in England and Wales. This also allows them to be compliant with the latest building regulation requirements. Trickle ventilators provide ventilation to the room without the need to open the main window, reducing noise levels as a consequence. 5mm (2500EA) 215mm (5000EA) 29. redeem. Typically, standard trickle vent covers offer around 30-35dB noise reduction, whereas an acoustically treated trickle vent cover may offer a 40-45dB reduction when installed perfectly. The XS13 is a direct replacement for the S13 range, using the same slot measurements but offering a much greater. Learn More . uk +44 (0)28 9061 6505SF Xtra Sound Attenuator (Acoustic) Vent FOR USE ON PVCU, TIMBER OR ALUMINIUM WINDOWS. Unique draught reducing panel manually adjusted with an easy. This SlimVent & Canopy set from Yale is a part of our comprehensive range of trickle vents that enables window and door manufacturers to meet the requirements of the latest revisions to Building Regulations Approved Document F in England and Wales, and the Scottish Building Regulations October 2011 Standard 3. Said to be bulky and unsightly . *Series 5 & 6 Requires controls kit – sold separately. EN. sales@titon. Qty BPD Store. Windows and doors are vital for effective background and purge ventilation, but performance has to meet the specific demands of Part F. AC2. Resources. SlimVent has been designed with. Trimvent® Select Xtra S13 FOR USE ON PVCU, TIMBER OR ALUMINIUM WINDOWS. THIS AREA IS CURRENTLY BEING UPDATED – PLEASE FEEL FREE TO DOWNLOAD BROCHURE FOR FULL INFORMATION>. 57 Ex. The ‘p’ (projection) dimension of each can vary depending on if it is open or closed. 0800 970 4190. W. 00. comRytons acoustic trickle vents for walls allows the occupant controllable ventilation with the comfort of reduced noise transfer from outside into the room. Available in 2 sizes: This vent 2500EA - 250mm (L) x 25mm (H) x 70mm (D) Internal/86mm (D) External. It can be installed over a 13mm. These trickle vents are screwed to the frame and can be operated by simple finger control. Acoustic trickle vents. VAT. Core drilled – suitable for retrofit installations. Glidevale Ultravent Trickle Ventilator External Canopy Grille. Window Acoustic Trickle Ventilator Sonovent. The new trickle vent regulations 2022 outline a series of criteria that must be met in order to achieve the correct amount of ventilation for a property. Trickle vents ; Trickle vents. Ventilation is there to improve the quality of life inside houses and offices, which is why our vents – either trickle vents, through-frame vents, over-frame vents, or glazed-in vents – are designed to keep outside noise. 98, Chase CB £107. Concealed and surface-mounted. View Product. If your property is near a busy road, railway or airport, trickle vents can be designed with a high-performance acoustic option to reduce noise. TV90 TV250 Internal Trickle Ventilator: TA660GT:. Product face sheet. Passivent’s Litevent is a controllable roof ventilation. The best acoustic attenuation reached so far by a trickle vent is the effect of combining our reliable Ventair TRDn controller with a two-stage acoustic attenuator installed in our Ventair Akustik air intake. 99. Cowled Super Acoustic Controllable LookRyt® AirCore® (Up to 50 dB Dn,e,w) Controllable air vent for background room ventilation. Zehnder ComfoAir Range. • Maintains the. The acoustic attenuators come in three sizes; 25mm, 50mm and 75mm, which provide different dB reductions. Acoustic STC – S13 4000 vent – open 33dB – closed 45dB Acoustic STC – XS13 412 vent – open 32dB – closed 41dB Acoustic STC – XS13 497 vent – open 32dB – closed 35dB . 2) Are they straightforward to retrofit, ie do i just unscrew my existing vent, slide in the new one and screw in to place or is there more to it. As expected, the standard vent was not very successful in keeping out noise. Share. We supply trickle vents from manufacturers such as Greenwood, Glazpart and RW Simons. Trimvent® Select Xtra S13 is a surface mounted plastic slot ventilator that fits over a 13mm slot in a window and provides an Equivalent Area (EA) of 2000mm2, 4400mm2 or 5000mm2. Aluminium Trickle Vents. Performance for the various elements is as follows; Table 2 - Facade element example performance Element Octave Band Frequency (Hz) Noise Level 125 250 500 1000 2000 4000 (dBA) Trickle Vent 373635 34. Glass-fitting Ventilators. Acoustic trickle vents now make it possible to obtain planning permission for new developments that are situated near a busy road, train lines or an industrial site that would have been refused. RW Simons Ltd PVCu Trickle Vents range is called Framevent and is the latest addition to our extensive range of window ventilators. The VELFAC acoustic trickle vent ensures both fresh air and noise reduction when combined with VELFAC SOUND windows. I spoke to the builders about the issue, who subsequently contacted the. 62,Topcashback: £177. VAT) Order Quantity. Acoustic block ventilators are large, aesthetically unattractive and often cannot be accommodated. 78 (ex. each. Adjustable flap aluminium ventilator with acoustic Attenuation, for glazing-in to windows, overframe or wall mounting. 144 sold. As acoustic experts, we do not recommend trickle vents. Renson's window vents are no exception: they excel in their clever design. 125 months. Our windows include trickle vents to provide ventilation and to comply with the latest. The link vent is our latest and most advanced trickle vent and the instructions are provided for the shorter 2500 (EQA) vents and its big brother the 5000 (EQA). 00) - Casement Window. Ex. Sometimes the best way to achieve the best acoustic performance in new build applications is to upgrade from a traditional ventilation strategy, e. The Acoustic Window Trickle ventilation range offers a noise reduction of up to 41db which can now make it possible to obtain planning permission for new developments near a busy road, train line or an industrial site that would otherwise have been refused. The latest addition to the Simon acoustic range. New higher equivalent area confirmed by the BRE. 250-368mm L with air brick fitted. The 13/16” dimensions are always constant; therefore the body length is always 1-5/8” shorter than the overall length. Trickle ventilators. 29 Inc Vat. Ideal for both timber and PVCu, the Framevent has been specifically developed for the volume market. Acoustic options with enhanced sound reduction up to 50dB. The purpose of trickle ventilators is providing a consistent flow of fresh air. OPEN. 8,400mm² (84cm²) equivalent area. £2. Ventilation in windows and doors must extract excess water vapour, air pollutants and condensation. SF Xtra Sound Attenuator (Acoustic) Vent FOR USE ON PVCU, TIMBER OR ALUMINIUM WINDOWS. Trickle Vents are designed to provide fresh air ventilation for improved in. The. favorite_border. Then simply cut a space in the foam to glue each panel in. co. Condensation ventilation is available in a variety of sizes for new build and refurbishment and Rytons acoustic background vents for walls have BRE measured equivalent areas and acoustic (Dn. The Invisivent ® Air and Comfort window vents by Renson ® are controlled by the smart Healthbox 3. So if the ventilator is effectively blocking sound in some way then the vent will let a lot less noise in than the window does when opened just a mm or two. Unfortunately, moisture in the air is common in everyday living and it needs to go somewhere and we need changes of air too. Free postage. Unique acoustic trickle vents are needed. Delivery. Trimvent® Select Xtra S13 FOR USE ON PVCU, TIMBER OR ALUMINIUM WINDOWS. Airflow, acoustic properties and test standards. In reply to Lewis and Stevie, Builder can use better trickle vents and there are Acoustic Trickle Vents available, if Builder will not come back a local glazing company should be able to help. Surface mounted noise reducing acoustic trickle vent. Available in 3 external cowling colours. Adding an extra pane of glass with our triple glazing will only provide a small increase in sound insulation, if all three panes are of the same thickness. FREE DELIVERY on orders over £600 (£500 ex. Ventilation can be provided through any appropriate means. As one of the market leaders in tile ventilator manufacture in the UK, Glidevale Protect’s range has been collated for over 35 years and includes hundreds of dedicated profiled tile ventilators matching almost. The short answer is no, you do not need trickle vents if you have a full mechanical ventilation and heat recovery system. Natural daylight. The glass thickness. Another advantage of Titon’s metal trickle vents is that they are designed to fit over the same slot detail (13mm or 16mm slot), making an upgrade a simple swap. Proposal It has been proposed to redevelop the former Maybloom Club site, Bostall Hill, London, SE2 0RA, toSlimline vent design has clever two stage opening. Spent ages reading about it and it seems that they make a huge difference in terms of noise. sales@titon. Trickle ventilators (or trickle vents) provide this effective background ventilation for a home, contributing to a healthy living environment by enabling unobtrusive and controllable whole-room ventilation. Yale® is a world leader in residential security and the huge range of products stocked at Window Ware include Lockmaster multipoint door locks, window locks, shootbolts, letterplates, door locks, nightlatches as well as security products like the Yale conexis with Z-wave technology. Take some 3M spray adhesive and apply it to the flat side of one of the acoustic foam pieces. Features & benefits. £7. Glue acoustic foam on all the sides of the ducting and wait for it to dry. All new and replacement windows will need to meet these regulations or will fail the FENSA inspection, and will therefore not be eligible. #1. This is particularly important in areas where this is more likely to happen, including. Free area (maximum): 26,670 mm²/m. Availability: Item stocked in our warehouse. Qty Glidevale ALDB Acoustic Trickle Ventilator 8000mm Add to Basket. Stocking part F compliant window trickle vents from brands like Glazpart, Greenwood & RW Simon. com. Our window vents are subtly integrated into your façade — and their acoustic damping comes as a bonus. Optional SoundOUT sound diffuser box can be fitted to minimise the transfer of noise through the vent. to the body to ensure acoustic performance is achieved. Your Price Apply / Login. 47 (-1;-2) dB. EAQ42W is an acoustic window vent suitable for new build and refurbishment and can be applied to most window profiles with add on sections. Over-head extract fan / trickle ventilator. W x H x D: 260 x 90 x 7mm. Surface mounted noise reducing acoustic trickle vent. Adjustments to slot heights may be needed to achieve the EQA requirements. Acoustic FV (Framevent) Supplied with a PVCu internal flap unit and aluminium external canopy. Trimvent® Select Xtra S13 FOR USE ON PVCU, TIMBER OR ALUMINIUM WINDOWS. Trickle vents allow for a small amount of ventilation even when the window or door is closed. Ultra Vent and Grille; Energy saver humidity sensitive vent; Acoustic through frame. co. Sizes: Length - 465mm Width - 23mm. Removable cover pannel conceals Ventient trickle ventilation unit. Trickle ventilators. Donald BSc (Hons) AMIOA T: 0330 043 1764 Page 4 of 24 1. Titon trickle vents are one of our most popular and reliable vents; each set comes complete with inside and outside canopy, screws and matching cover caps. Flush fit | White ABS Plastic | 300mm long x 20mm wide x 10mm deep (2,700 mm2 free area). Glidevale ALDB Acoustic Trickle Ventilator 4500mm - White. CLOSED. Acoustic lining reduces sound by 38dB with internal grille fully open and 39dB when closed. View. Burglar-proof performance is desired in some cases. I discuss sound mazes in more detail in the article linked above, but watch this video for steps on how to build a sound maze. Our trickle ventilator products are available for delivery as. Acoustic windows and glass are NOT a 100% soundproofing window solution but you can achieve considerable noise reduction. 50 a set, conform to Building regulations. By buying this product you can collect up to 27 loyalty points . Achieves Building Regulations’ EA requirements. stabilised PVCu, it reflects the growing. Wasn't sure where to post this ! We moved into a new house in June2010, when it started getting colder we closed the trickle vents on all the windows but still have a draught coming through them. WHITE 400mm Trickle vents from just £3. The best acoustic attenuation reached so far by a trickle vent is the effect of combining our reliable Ventair TRDn controller with a two-stage acoustic attenuator installed in our Ventair Akustik air intake. Fast retrofit design only requiring a core drill of correct. Trickle Vents are designed to provide fresh air ventilation for improved in-home air quality while the window remains closed and secure. Lockable restrictor (160mm or 270mm) Click vent. Bathrooms (with or without a toilet): 4000mm2 EA. Manufactured in the highest quality U. Enquire now, call 01805 623721New rules (after 15 June, 2022) In line with the new rules, all windows and doors must be fitted with trickle vents, unless there is an alternative, dedicated ventilation system fitted. 99. Our cutting-edge technology is used to assist people in their needs to curb noise pollution and to enjoy peace and quiet. If you’re interested in noise reduction glass, consider our Comfort and Comfort Plus ranges from Planitherm. You’ll need to cut a section off the top to allow the air to pass through; 25-30% should be right. One of the best performing acoustic window ventilators available in the UK. Trickle Vents – Routed For Flush Fit. Acoustic performance tests by BRE Acoustics. Now, firstly, I know trickle vents are installed to ensure a property stays ventilated, etc, but mine are driving me mad! I honestly don't see the point in having double glazed windows that the benefits of which are to be energy and noise efficient, then whack a hole in the frame that negates the benefits of both!Cover the sides and top and bottom of your air vent with acoustic foam as you go. 70 . The acoustic Trickle Vents can also be powder coated to any standard RAL colour. These new rules feature in Approved Document F, which provides guidance on adequate ventilation in properties, and will impact both new and existing homes, along with extensions and self. AirLiner: Extends from. £5. Can be removed to allow access to and maintenance of device. We are Closed 23rd - 26th December & 30th December - 1st January (Open as usual 27th 28th 29th December Back to normal Hours 2nd January 2024). Damp Weather Shutoff – dual control adjusts. £3. Generally, to gain maximum performance, the size of the acoustic attenuator should be mirrored on the vent and canopy; and. These are areas such as kitchens, bathrooms, utility rooms etc, where appliances, showers and baths produce large amounts of moist, damp air which needs to be expelled from the room. the acoustic attenuation also often typically reduces the airflow. - Enables secure, weather resistant ventilation with exclusion of. Titon is pleased to announce the promotion of Carolyn Isom to the Titon Holdings Board as Chief Financial Officer. Glidevale TVUG25 External Canopy Grille – BIM Object. The more air that you allow through a ventilator, the worse the performance you will get with the acoustic performance. Acoustically damped pipe fitted around unit to reduce external sources of noise such as traffic. Doormaster. g. Acoustic window vents Acoustic Energy Saver, Humidity-sensitive 3815mm 2 4000mm 2 39dB Acoustic Low Proile 1777 / 1600mm 2 4400 / 4400mm 2 40-42dB. Designed and developed in the UK, Yales SlotVent allows an appropriate amount of air to pass through the window, helping to remove stale air and reduce condensation and mould, as well as enabling people in cities or near busy roads to benefit from ventilation without having to open their windows. Up to 43 db Dnt Rw. Contact Us. Order Before 9pm. Surface mounted window vents are specifically designed to operate in conjunction with a routered airflow slot through the frame or sash. However, they are intended to be left in the open. Trickle Vents. bulk or standard packed (as sets or separate internal ventilators & external grills) mix and match colours. Was the window firm aware that the windows were being fitted for noise reduction? We've just had some new windows in and asked them to quote for triple glazing for sound reduction. Range includes:2500EA4000EA5000EAInternal Vent Yale brandedPre-fitted clipsVent can be tilted 30. The acoustic vent is installed into a timber packer, which is fitted and sealed on site and can achieve a sound reduction value of Dn,e,w (C; Ctr) = 40 (-1; -2) dB, and an equivalent free opening of. With window vents, you can ensure a constant and natural supply of fresh air into your home through dry rooms such as living rooms and bedrooms. Window ventilation is essential, and is also enforced by the building regulations. FREE DELIVERY on orders over £600 (£500 ex. Downloads. Provides an outstanding Dn,e,w;42dB. Size: 400mm (L) x 20mm (H) x 22mm (D) Achieves sound reduction of 40dB closed and 33dB open. Cleaning Products; Door & Window Repair Kits; Draught Excluders;. New building regs for future homes 2025 in new builds will not have them, further more they will be trippled glazed. Doing this will help further reduce echo. Reduces sound by 45 dB with internal grille fully open and 50 dB when closed (Dn,e,w). Trickle Vents allow you to have a small aperture in a window for a controlled amount of ventilation. Colour Name: White. They're easy to install, cost effective, unobtrusive and easily operated by the occupant. AAC125HPCWL. Trickle vents also add enhanced sightlines, which is a key priority to customers. 8,400mm² (84cm²) equivalent area. £9. It also features 3 different airflow modes and an insect grille to keep. At the FITSHOW 2013, we launch the first of the “Link Vent” range of patent applied for trickle ventilators. Acoustic Dn,e,w (+/-) – vent open 32 (0;1), vent closed 43 (0;-1) Finishes. Generally, to gain maximum performance, the size of the acoustic attenuator should be mirrored on the vent and canopy; and. Comes complete with Freshvent 100 db and Freshvent 100 Thermo db versions. Browse our range of Trickle Vents & Canopies, available at IronmongeryDirect at Low Trade Prices. 78 (ex. Meets requirements of building regulations F-2010+ amend 2013. The latest additions to our acoustic offering is the Tunal Range which represents a series of on the frame and. Browse our range of Trickle Vents & Canopies, available at IronmongeryDirect at Low Trade Prices. The ‘p’ (projection) dimension of each can vary depending on if it is open or closed. Trickle vent with acoustic damping. stabilised. Although the vent can be closed, they. Sound reduction up to 50db D n,e,w. Range includes: Standard through frame. 5 year old house has trickle vents on every window, which let in a huge amount of cold air even when closed. Trickle vents are background ventilators integrated into window frames and door frames to allow a 'trickle-feed' of constant airflow from the outside to an internal space. Acoustic FV (Framevent) Supplied with a PVCu internal flap unit and aluminium external canopy. A hardwood subframe can act as a thermal barrier, as aluminium is a great heat conductor, the wooden subframe prevents cold bridging from the fabric of the building onto the aluminium. Rytons are the leaders in vents for all applications and their acoustic performance is second to none. 4080mm² measured area 2500mm² Equivalent Area. Many homeowners, architects and double-glazing companies prefer to avoid trickle vents as they can affect a property’s overall aesthetics, energy efficiency and acoustic performance. Bathrooms (with or without a toilet): 4000mm2 EA. If you already have pieces of egg crate pattern acoustic foam lying around, you can use them to plug your air vent. Our range of acoustic window trickle vents provide a cost effective solution to suit the needs of noise polluted sites. ECOSlide uPVC sash windows come equipped with trickle vents as standard to meet Part F of Building Regulations. Up to 40 db Dne W. Mantis 3. The Acoustic Energy Saver Humidity Sensitive Trickle Ventilator (TVES4dB) is perfect for use in built up areas nearby busy roads and motorways. Find out how to easily retrofit a trickle vent to your door with our step by step video to guide you. New builds. ACOUSTIDRAIN. Features and benefits. 2060 (1) 2200 (1) 2500 (2) 4000 (2) 4300 (1)Acoustic laminated glass; Sash Horns. Finish (inner and outer). 63cm². Meets World Health Organisation recommended reduction of 33dB. A trickle vent is a device usually fitted at the top of a window that allows fresh air to circulate naturally through a room, and allows polluted air out. Was the window firm aware that the windows were being fitted for noise reduction? We've just had some new windows in and asked them to quote for triple glazing for sound reduction. Keep your trickle vents open. VAT) Plastic trickle vents with fingertip vent adjustment. Important Notice. Spend £250+ to Get an Extra 5% off. Extract fans in bathrooms and trickle vents in windows, to a central extract system, mechanical extract with fewer - sound attenuating – vents, or all the way to mechanical ventilation with The Freshvent has 2700 mm² equivalent area.