Counter batten roof ventilation. The NHBC’s updates to 7.

Counter batten roof ventilation Share Proctor Roofshield and after consultation with our BCO she said that the air gap can be above the membrane. The battens must be accurately measured and correctly placed to ensure the stability of the covering and to allow proper ventilation under Photo 7 – Adding a vented batten lifts the sarking off the batten and creates a 20mm air gap and ventilation path between the membrane and batten Photo 8 – Close up view of vented batten Before you plunge into installing battens and counter battens, ensure that their size and batten spacing align with your chosen tiles. com or call us on +44 (0)161 905 5700. Fix the tiling battens (25x50mm) at the roof tile gauge. Context for this specific roof: This is in Scotland. Tiling battens 8. These roofs the batten space. This needs to “breath”. In Ventilation Size. When TLX Gold is used with a counter batten, the counter batten provides sufficient space for drainage and also ventilation. Counter battens should be fixed to This should be achieved by means of counter battens and vents at both low and high level: If the batten space is not ventilated, there needs to be an increased level of ventilation to the roof space and that should be in BRANZ appraised as roof and wall ventilation batten. 5; Locations in wind zones up to 52m/s *Contact the SAMSON Technical Department for assistance. 65mm is also the minimum allowed in BS5534. Warm roof ventilation specification. Batten spaces should be ventilated for warm or cold pitched roofs where a low resistance underlay is used in combination with an impermeable roof covering. Roof ventilation should be in accordance with BS 5250:2021 Management of moisture in Buildings – Code of practice. 2006). a metal roof, or fibre-cement slates) then counter batten and introduce eaves to ridge ventilation. These roofs were offset from the roof deck by about ¾in. This roof certification, without high or low-level roof ventilation. FREE DELIVERY ON ALL ONLINE ORDERS OVER £1000! FREE DELIVERY ON Figure 12: The effect of Above Sheathing Ventilation and solar reflectance for two metal roofs compared with a direct-nailed shingle roof. As a rule, counter DIN 4180-3 recommend ventilation for low pitch (<5°roof pitches ) for up to 10m roof lengths, must have >50mm counter batten height, with ridge ventilation openings equal to 0. If no batten space ventilation is provided, the Type LR underlay should be treated as a Type HR ROOF SPACES CI/SfB Eleventh Issue May 2018 (27. This complements potential cooling requirements for the PV Panels as well as allowing vapour to disperse the roof construction. (0. 4 feet down from the peak of the roof facet. Klober's Eaves Closer is a simple and effective way of preventing birds and vermin from entering the roof through the eaves counter batten cavity. com or call us on 0844 9395 900. Below you can find a list of battens and their Roof Ventilation. from publication: The Impact of Above-Sheathing Ventilation on the Thermal and Moisture Performance of Steep The ProctorVent VB10 is a Polypropylene Ventilated Roof Batten designed to create a 10mm cavity for ventilation and drainage. Technically, the roof remains ventilated by installing counter battens below the roof tile battens to create an air gap outside the main roof build-up. Valley boards and valley irons installed in place 4. The nail diameter of 2. An effective way of preventing birds and vermin from entering the counter batten cavity. (Adapted from Miller et al. Ventilation: Battens create space between the roof deck and the roofing material, which improves air circulation. Warranty position The determining factors for batten space ventilation is if an LR underlay is chosen in combination with an impermeable roof covering. com Installation with Battens - DECRA Tile & DECRA Shake 3 Ridge Bender Base Bender Portable Bender Tile Batten Spacer Underlayment should be placed between the roof deck and the counter battens or battens. Why are counter batterns If you have counter battens everywhere you can omit ventilation through your cold roof section, breathable membrane dependant of course, and ventilate above. In this instance, the same attention should be paid to designing the ventilation space Timber batten has a variety of applications, such as in walls, floors, cold roofs, warm roofs, and many more. No counter battens required Ventilation below membrane (50 mm ventilation path) 25,000 mm²/m Ridge Vent As provided by Boral Steel (or similar to Python) 3” Python Fasteners As provided by Boral Steel ¾” Stitch Screw 2” Panel Screws (non-washer) 2 3/8” (for battens and panels) and 3 ¼” Ring Lay 1”x4” counter battens over roof trussing (Maximum 24” O. so we used counter battens and battens on the roof for the tiles and fully filled the rafters with mineral The ventilation cools the roof in hot weather, exhausting heated air between the tile and the deck out the ridges and hips while breathing in fresh air at the eaves. air freely moves in this area, you will of course get air flowing up beneath the tin in each of the curves / profiles as they are open at the bottom and open at the top If the external covering is not air-open (e. Ventilation ensures that a building’s internal environment is supplied with adequate fresh air and allows it to move in a controlled way. Nail direct to sarking vs batten/counter batten; Hooks vs nails; and slate size. The permeability of the roof covering itself impacts on whether there is a requirement for a ventilated batten & counter batten cavity below it. The rear ventilation level under the tile roof prevents damage to the underside of the tiles due to condensation and improves the thermal insulation of the attic in summer. This should be achieved by means of counter battens and vents at both low and high level: Low-level vents should be equivalent in free area to a slot 25 mm deep Pitched roofs should be adequately ventilated to limit the risk of interstitial condensation. With self adhesive to hold battens in place Trying to figure out whether the drip tray can go over the above fascia vent. The section area should ideally be higher than the minimum reference value as per Table 1. Green Roofs are more sustainable with EBS battens. Download scientific diagram | Typical ventilated tiled pitched roof (1: roof tiles; 2: batten & counter-batten; 3: insulation; 4: deck), and most common types of roof tile (a: Coppo, b: Portuguese All penetrations, pipes, vents, etc. 1- Roof tiles on battens; 2- Counter battens for Fascia boards installed at the correct height with counter (tilt) batten (where applicable) 3. Battens and counter battens should be: in accordance with BS 5534, accompanied by a delivery note and indelibly marked with the supplier, origin, grade and size The dimensions of counter battens should also be sufficient to provide a ventilation gap (where Photo 16 – Low pitch, light colour roof sheeting, tightly fitted soaker flashing with limited option for roof ventilation. 7; and Subject to manufacturers recommendations, ventilation openings to the batten space above the underlay, created with minimum 25mm deep counter battens, having a minimum free area of not less than 25000mm2/m at eaves level and 5000mm2/m at ridge level. 0 Warm Roof Ventilation Requirements If using an HR underlay: • 25,000mm²/m eaves ventilation and 5000mm²/m high level ridge ventilation, underneath the underlay. ” Eaves/low-level ventilation: No you do not need to counter batten, this is classed a cold roof so will need venting, If you close the roof by insulating over rafter this is termed as warm roof and needs no venting. 14 Isover Metac Roll 031 . The insulation is still protected by the membrane above, but with a void between them. The system design will vary with the environmental challenge and goals. Residential roof tests by Beal and Chandra (1995) demonstrated a 45% reduction in the daytime heat flux penetrating a counter-batten concrete tile roof as compared with a direct-nailed shingle roof. Placing the VB20 on top of the roof battens, under the Roof batten sizes can be difficult to understand without knowing what each measurement can typically mean. Stone-coated metal installed on batten and counter batten systems. 50 – £ 252. VENT VB20 Roof BRANZ Appraisal 979: Download Preview : VENT VB20 Roof - Product Technical When vapour permeable, low resistance (LR) roofing underlays, including air and vapour permeable membranes are used on a warm or cold roof in conjunction with integrated, in-roof solar PV panels, Glidevale Protect’s recommended best practice is to install counter battens. 16 Isover Metac Roll 034 . Purpose designed devices which open laps of the underlay are not recommended. This directly impacts the weather resistance and aesthetic appeal of your roof. Tiling battens run across the 50mm ventilation space to ridge 6. 7; and z Subject to manufacturers recommendations, ventilation openings to the batten space above the underlay, created with minimum 25mm deep counter battens, having a minimum free area of not less than 25000mm2/m at eaves level and 5000mm2/m at ridge level. through the underlay should be suitably detailed to prevent water ingress. Vario® In order to have more insulation in the pitched roof sections, I had planned to use 50mm counter battens underneath the rafters. Panel vents should NOT be used for air intake. 5. C. This Installation Pitched Roof with Counter Battens . Truss 12 – Counter battens - If you’re using a vapour permeable (breathable) membrane with a close fitting roof covering, such as shingles, then it needs to be counter battened to allow ventilation of the batten space. Over-fascia vents should provide ventilation into the batten Eaves vent should also provide ventilation to the cold roof void as per BS5250 Note: Battens or counter battens, if not fixed by extended cladding fasteners, can be fixed using countersunk purlin screws or if fixed with hex headed screws, they should be counter-bored before installation to avoid damage to the roof cladding. Provides for a drainage and ventilation path under This should be achieved by means of counter battens and vents at both low and high level: Low-level vents should be equivalent in free area to a slot 25 mm deep running the whole length of the eaves. Fix a 25x50mm counter batten on top of the membrane up the length of the rafter from eave to ridge line, or on a mono pitch roof to the top abutment. To further elevate the quality and longevity of your roofing project, consider integrating dry-fix accessories, ventilation solutions, and more. Roof coverings up to 60kg/m²; Minimum counter batten thickness of 25mm; Using a 38mm counter batten will reduce the quantity of fixings required per M2 * Slope of ground within 1km up to 1:12. Resource Centre Resource Centre Technical Support Ordering and Delivery Downloads Videos | Blog | About Us About Klober Sustainable Download our free Guide to Roofing Ventilation today for information on the importance of Keymer Premium Roof Tiles; Ventilation terminals; Pavers. Vario® Care should be taken when designing passive type roof ventilation in corrosion zones such as geothermal or salt spray. COUNTER BATTEN ROOF TILE GAUGE & HEADLAP VENTILATION EAVES VERGE FIXINGS All dry fix systems that are used, like ridge, top abutment vents, verge, etc. There isn’t a one size fits all answer to ventilation and fibre cement slates or shingles – it depends on a number of factors, including what type of underlay you are using. The S10 sorting according to DIN 4074-1 (or the S24 sorting according to DIN EN 14081-1) provides a guideline: it regulates the strength class according to which the batten may be used. text. Figure 6: The ventilation arrangement for a typical truss roof is the same as for a skillion roof. Barge boards installed with counter (tilt) battens fitted (where applicable) Chimneys, abutments, vent pipes and roof ventilation installed, complete with their flashings and supports 9. Question What are the Aluminium eaves ventilation profiles to be installed under the counter battens at the eaves on new build and retrofit roofing systems. 5 Selected permeable As well as providing a robust anchor point for the nailing of slates and tiles, battens can also help to increase ventilation and weather resistance, reduce ice damming, and even reduce heat loss and gain. Counter battens are wooden strips that are installed vertically over pitched roofs to which horizontal tiling battens are attached. It is designed to ensure unimpeded airflow through the roof cavity of cathedral roof designs, enabling 16,000mm² per linear metre of airflow throughout the entire roof cavity. Fix a 25mm fascia vent on top of the fascia board and allow 10mm continuous ventilation at the highest point of the roof. Roof Tile Vents & Extraction Slate Roof Vents & Extraction 25mm x 50mm Treated Counter Batten - Price per Linear Metre: 3600mm: 50mm: 25mm: Natural: 25mm x 50mm Red 5,000mm²/m ridge ventilation within the counter-batten space to ensure compliance to BS 5250 and reduce the risk of interstitial condensation forming on the underside of the roof covering. Roof: osb - membrane - counter batten - tile batten The Corodrain Range of Dry Valley Troughs are Available for Fast Nationwide Delivery From Roofing Ventilation. 75mm Roll size: 1m x 50m & 1. Conclusion. Roof coverings and batten space ventilation using vapour permeable underlays (Type LR) Vapour permeable underlay (Type LR) with smooth underside showing condensate run-off and dripping Download scientific diagram | Roof deck construction with battens and counter-battens. For a simple duo-pitch roof, BS 5250 specifies sufficient ventilation as being: this can be achieved through the use of counter battens installed above or below the membrane. Plastic pads are 100% post-consumer recycled polyethylene. Hybrid/Warm roof – cellulose between rafters (but no insulation above) the rafter. This should be achieved by means of counter battens and vents at both low and high level: Low-level vents should be equivalent in free area to a slot 25 mm deep running the whole length of the eaves. Installation Pitched Roof with Counter Battens . The tile battens, being horizontal, will prevent or impede water runoff - that is Figure 12: The effect of Above Sheathing Ventilation and solar reflectance for two metal roofs compared with a direct-nailed shingle roof. When installing asphalt shingles and other low-profile materials, 2×2 battens are often used to create horizontal airflow. That seems to fit together easiest but would seem to block free flow of air between counter battens. Isover insulation installed between rafters 4. 05% of the total roof area (or minimum Battens and counter battens shall be adequately sized, spaced and fixed to support the roof covering. 2. 2. Cavity Clay Block System; Monolithic Clay Block System; Facade Systems. Warranty Design and Installation Additionally, the documents provide guidance on whether counter battens are necessary and if ventilation is needed above or below the membrane, among other considerations. I was told counterbattens (used 18 x 25 mm counterbattens) also provide the necessary ventilation above the boards. Attention should be given to blocking vapour entering the roof space, and or increased ventilation for the occupied space among other design choices. Battens and counter battens should be: fixed by skew driven nails on each side of a joint. Order Helpline 03302 230 267 | Monday to Friday - (8am to 5pm) The main roofing underlay should be laid over the counter batten; Roofing battens should be fitted with the ends firmly located onto the valley boards, positioned close to the counter batten, with care The roof must be counter-battened, using graded tiling and counter battens in accordance with BS 5534. “U” Style Valley (Stone Coated Finish) 08/23 DECRA. I found this picture on instagram interesting as Im soon to start a similar roof build up. 6 and 12. Paver Selector; Types of Clay Paver; Permeable Pavers; Accessories; Clay Blocks. While most would agree that ventilation in the roof is a good idea, there is some confusion about the best place for it. either: • Without counter-batten, 10,000mm²/m eaves ventilation underneath the underlay. A ventilated cavity is created between the roof cladding and the membrane by battens and counter battens. Batten height can be increased up to 45mrn in combination with higher open area ratios at eave & ridge to enhance ventilation for better summer performance. In these zones Passive- stack ventilation may need to be avoided. It is best to use dried wood to prevent warping of the slats after installation. ) bottom of counter batten is to be in line with eave fascia 2. All risk factors that need to be considered. A counter batten, or counter timber batten, is a vertical strip of wood installed over the building membrane and beneath the horizontal timber battens. Using 25mm deep counter battens with a minimum free ventilation area of Unventilated warm pitched roofs maximise the insulation potential of the roof structure by eliminating the ventilation gap and filling the full depth of the rafters with insulation. By Chanmenie April 30, 2022 in Ventilation. Is the ventilation advantage worth the extra work? Its an Australian build but don't they need to use treated timber I'll be While most would agree that ventilation in the roof is a good idea, there is some confusion about the best place for it. If you felt above the counter battens, you automatically have a trough to allow water channelling into z Ventilation openings to the roof void in accordance with sections 12. If non vapour permeable or high resistance underlays are specified in a warm roof construction, ventilation to the counter batten void becomes a necessity according to the LABC. Without battens, roof tiles or slates would have no reliable anchor, which could lead to misalignment or even tiles sliding off. Corium Classic The Klober Eaves Closer is a lightweight yet long-lasting PVC roof vent and pest control strip that prevents birds, large insects and vermin from entering the counterbatten cavity in roof tile and slates roofs. Fasten counter batten with fastener of sufficient would alleviate the need for an 11mm counter batten. I find the most unobtrusive method is to use facia mounted strip vents which give a constant through roof ventillation. A ventilated batten and counter batten space means roofs can should be ventilated (see Figure 1). Install pro clima SOLITEX MENTOÑ Roof Weather esistive Barrier over rafters Rebated Valley board (required in situations below Valley rafter Typical Valley pro clima Above-sheathing ventilation of a roof cover can also provide thermal benefits for comfort cooling. Where an underlay overlap does not coincide with the batten, consideration should be given to either including an extra batten at the overlap or increasing the underlay lap to coincide with The Ventilated Batten – VB20 is a strong, durable roof and wall cavity batten. The guides follow the white paper Glidevale Protect published last year which offers practical guidance on the ventilation strategies required for use with different roofing Counter batten. 17 . Where air impermeable coverings This above-sheathing ventilation, or ASV, inherent to tile roof installations can be enhanced using counter battens, shims or manufactured systems to raise the horizontal battens above the roof deck. Skip to content. . It is also recommended that the ceiling is ‘well -sealed’ with an associated air and vapour control layer (AVCL) For a simple duo-pitch roof BS 5250 specifies sufficient ventilation as being: When vapour permeable, low resistance (LR) roofing underlays, including air and vapour permeable membranes are used on a warm or cold roof in conjunction with integrated, in-roof solar PV panels, Glidevale Protect’s The most common types of battens are a 2×2 horizontal batten system and a counter batten system that uses vertically laid 1×4 and horizontal laid 2×2 battens. Prevents the entry of birds and insects into the counter batten cavity; Allows air movement into the counterbatten Structural Support: Roofing battens provide critical structural support for roofing materials. Warm Roof Construction. Marley provides a range of universal ventilation products and accessories that can be used to achieve the required airflow for a healthy roof space and can Ventilation Roof Covering Impermeable Ventilation guidance according to BS 5250 For further guidance please contact Sandtoft’s Technical team: sandtoftinfo@wienerberger. I need more than 50m now having looked at the various insulation options (can't use PIR due to design ethos). Using 25mm deep counter battens with a minimum free ventilation area of The NHBC’s updates to 7. g. The length of the screw or nails must be sucient to penetrate ventilation battens and counter-battens and enter rafters ⁄ of its length. skipToContent text NZ's Best Drive-Thru Experience Faster and smarter pickup with of roof battens for fixing of Ridge Vent Ridge Cap Flashing is to be supplied by the roof cladding supplier. 15 address the concerns about ventilation around roof-integrated solar panels, stating: “Where arrays of integrated solar roof panels are installed forming the roof covering, then whole roof covering should be treated as air impermeable unless the panel manufacturer can demonstrate their system is air permeable. 2006) the vented area is open at the bottom of the roof with soffit vents and open at the top with roof vents as well as a 200mm open vented triangle just below the ridge. Roofing felt 7. Counter A warm roof, for example a ‘room in the roof’ or a loft conversion will require ventilation at high and low level to remove moisture laden air from the roof batten cavity. Over-fascia vents should provide ventilation into the batten space there needs to be an increased level of ventilation to the roof space and that should be in accordance with BS5250. Elevating the battens adds air less time by turning the two-step counter batten system into a single step. 45 degree pitched. A warm roof construction is defined by insulation following the slope of the roof, rather than being at the line of the ceiling. Improved Airflow With larger 4mm apertures VB10 and VB20 have a greater open area for improved air flow and faster drainage. In these situations, batten space ventilation as per the above should be provided. It is manufactured with recommended 4mm vents which make it ideal as a roof perimeter batten as it will repel the ingress of nesting insects. They are used to allow rainwater to pass off the tiles and away from your roof. It improves ventilation by creating vertical channels for air flow, enhances When looking at roof ventilation it’s important not to confuse it with uncontrolled air leakage. Ventilated Roof Batten VB10 Details The ProctorVent Drainage and Ventilation Batten (VB10) is a 10mm high compressive strength, self-adhesive drainage and ventilation batten for use in roofs and walls. 5m x 50m counter batten 1 - 5 2615 Wraptite Tape 1 - 5 ≤250mm 2574 None 1 - 5 Softwood sarking with slates** The air tightness of the slate or tile should be considered when assessing the Figure 12: The effect of Above Sheathing Ventilation and solar reflectance for two metal roofs compared with a direct-nailed shingle roof. The VB20 is also designed to provide a strong, durable purlin vent to allow passive airflow throughout the entire roof and wall area. If the roof is above 35° roof pitch, the span exceeds 10m, or is mono pitch or lean-to an additional When vapour permeable, low resistance (LR) roofing underlays, including air and vapour permeable membranes are used on a warm or cold roof in conjunction with integrated, in-roof solar PV panels, Glidevale Protect’s recommended best practice is to install counter battens. Vapour check Battens must be fixed in place with two screws (5x150) or nails (5x150). To ensure roof ventilation, it is essential that the counter batten height is appropriately sized to allow sufficient airflow. Truss roofs are more common in Australia and New Zealand. The right choice of roof battens is essential for a successful roof installation. Parker, Sonne, and Sherwin (2002) observed that a barrel-shaped terra-cotta concrete Counter battens 7. Prevents birds & vermin counter battens and a fly mesh at low and high level (to prevent insects getting inside the batten space). This results in unobstructed airflow under the fixing battens from eave to ridge. 25 mm counter battens should be used above the underlay and ventilation provided - 25,000 2mm2/m at eaves or low level and 5,000 mm /m at ridge or high level. 50. The VENT Systems Ventilation & Drainage Batten 20mm – VB20 is a Polypropylene batten designed to facilitate passive airflow through skillion or cathedral roof cavities. Roofing tiles 1 A supported breather membrane is created when the membrane is fitted taut on top of rafters and secured using counter battens that run the length of the rafter. **The slates were set with a headlap of 54mm; which is the minimum allowed in BS5534. We recommend using a 38 mm deep counter batten if possible, to compensate Insulation & Ventilation ; Ventilation ; 50mm air gap on cold pitched roof 50mm air gap on cold pitched roof. 019 m) using a batten and counter batten system. I could go with 25mm battens and 50mm counter battens or v-v. Battened roofs are also easier The ProctorVent VB10 is a Polypropylene Vented Batten designed to create a 10mm cavity for ventilation and drainage in the wall or roof cavity, reducing the risk of moisture build up and condensation. PITCHED ROOF SOLUTIONS PITCHED ROOF APPLICATION ISOVER METAC & VARIO® SYSTEM Tiled or slated roof with external counter battens/ ventilation space* 2. 5, 12. This creates a defined gap I have just replaced all felt, battens and tiles and used OSB boards to cover the roof, then counter battens, then breathable felt (it's just so much lighter) . 200mm ridge cap recommended to hide the soft edge flashing (if required) Truss top chord Selected roofing with stop ends Extra 40mm required for screw fixing VENT SYSTEMS Ridge Vent - RV10P (free air flow 8,000mm2 per lineal metre) Scale 1:2. Roofing tiles 3 7 8 6 4 1 5 Email: enquiries@thermaleece. 75mm counter battens start to feel a bit crazy. com • Web: Posted By: gyrogearHowever, if the membrane is drum-tight across the tops of the counter-battens, said precipitation, and vapour permeating, condensing then running down the topside of the membrane will, in places, be intercepted by the tile battens, which will effectively be "sitting in wet". The VB20 Vented Batten is a strong, durable purlin cavity batten that is designed to ensure that unimpeded airflow is guaranteed through the roof cavity of a Skillion Roof design, enabling Ventilation openings to the roof void in accordance with sections 12. , Cold roof (Insulation laid on ceiling) Roof covering (Example: in-roof solar panels, man-made slate, metal sheeting) For further guidance please contact Glidevale Protect’s Technical team: technical@glidevaleprotect. Prolongs the life of your roof- a batten system can prolong the life of your roof by Selection and installation of roof battens. With self adhesive to hold battens in place and available in 1000 mm lenths our drainage and ventilation battens are easy and The permeability of a pitched roof underlay – installed over the rafters and below the external covering – impacts on the provision of ventilation to the roof space. This will make your cold roof perform properly as the wind ventilated (see figure 1). *Specific products may vary. Issue 1 January 2024 No counter battens required Ventilation below membrane 10,000 mm²/m at eaves (low level) AND 5,000 mm²/m at ridge* (high level) Vapour Always ensure adequate roof ventilation is installed in accordance with BS5250. This will create The intended use makes the difference – Whether used as a fence batten, roof batten, counter batten or even as a shelf batten, the production and sorting differ. It’s separated from the roof cladding by battens and counter battens. Low resistance Underlay per BS 5250 3. The position of the first batten should be the batten gauge plus half the thickness of the batten. Installation of full scaffold, guardrail or safety mesh in acco Not using counter battens with close fitting roof coverings, such as fibre cement slates or shingles This is another common problem on new homes, or where a roof covering has been replaced. NFRC Technical Bulletin 6 Released by the National Federation of Roofing Contractors in Roof ventilation should be in accordance with BS 5250:2021 Management of moisture in Buildings – Code of practice. For improved ventilation Solarstone® recommends using following batten specifications: Ventilation battens Counter battens 2. THE AIR & VAPOUR PERMEABLE PITCHED ROOF UNDERLAY Group ROLL SPECIFICATION Colour: Green (top) Weight: 185gsm Thickness: 0. In-roof solar PV in part of the roof (needs ventilation behind). They've cut hundreds of small pieces instead of using lengths as counter batten. See All Tile Vents. Battens and counter battens shall be adequately sized, spaced and fixed to support the roof covering. You are fine as long as 50mm free airspace is left above the Using Proctor Air means that no additional ventilation into the roof space is required, and compliance can be achieved by using a ventilated batten and counter batten space. Simple to install one section eaves perimeter detail for counter battened roof systems. A Dry fix ridge system B Roof tile covering C Protect Viking Air D Tile batten Roofing ventilation range Suitable for all tile and slate roofs, the wide array of Glidevale Protect ventilation products Eaves Ventilation. 9)Rn7 M2 K7 Pitched Roof Board Insulation Low Energy – Low Carbon Buildings 1 In Figures 1a & 3a the breathable sarking membrane can be placed over the counter–battens, 2 The requirement for a vapour control layer and / or under tile ventilation should be assessed to BS 5250: 2011: + A1: 2016. Eaves Closer (Pack of 20) Eaves Closer (Pack of 20) £ 212. smxkyu dkhegu iuvlko tpjqfa opkyjsh zrbbns ryrhr wben eajznn vqyhg vdjq aibww sch ogdu eutfl