Cool-phase Hybrid: Utilising Phase Change Material and integrated Heat Pump

Building Products Index Ltd Ventilation Leave a Comment

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For the Ultimate in air quality control at 20% of the running cost of A/C

What is Cool-phase Hybrid?
Cool-phase is an award winning, low energy cooling and ventilation system that creates a comfortable, fresh and healthy indoor environment that can significantly reduce the running costs of buildings. Cool-phase Hybrid is an innovative enhancement that links high efficiency air to water heat pumps with our natural cooling phase change material system.

The Cool-phase system is a natural cooling system that uses night time cooling to charge thermal batteries which contain phase change material (PCM). The natural cooling system combines the cooling effect of the PCM with fresh air provided by the integral air handling unit of the Cool-phase system to provide low energy ventilation and cooling. This combination will not match the thermal performance of air conditioning but dramatically reduce energy consumption whilst offering an improvement on thermal conditions. Passive or natural design solutions are designed to take in to account the buildings properties, the local weather conditions and the internal loadings such as electrical lighting and occupancy levels. If for instance the weather is particularly hot, passive or natural design solutions will provide elevated temperatures above fine set point limits such as 24°C. For clients seeking such fine tolerance of set point control, the Cool-phase Hybrid system firstly guarantees night time charge of the thermal batteries during peak summer periods but also allows additional top up cooling to be provided during the day. This integration of cooling technologies ensures optimum efficiencies and maintains tight set point control.

How does Cool-phase Hybrid work?
Cool-phase uses a thermal energy store which utilises a Phase Change Material (PCM) combined with an intelligently controlled Air Handling Unit to actively ventilate and cool the building. The Cool-phase system can maintain temperatures within a comfort able zone, while radically reducing energy consumption by up to 90% compared with a conventional cooling system.
The effect of adding thermal mass to a building combined with measures to control internal and external heat loading, can be a very effective method of ensuring that the building meets requirements for thermal comfort. However during a period of hot weather, temperatures will invariably rise over time, as there is no method of actively dissipating the buildup of heat. Therefore the effect of adding thermal mass can diminish over a warm spell, although the building takes longer to heat up during the day, it will also take longer to cool down at night time and therefore not all of that heat may be dissipated by the following day. Unlike passive applications where thermal mass is simply added to a building, the Cool-phase system is able to intelligently control how energy is stored and released from the thermal store, by using a heat exchanger and mechanical ventilation. The heat built up during the day can therefore be released at night and the thermal energy store recharged. When this is combined with the effects of free cooling and night time ventilation, the result is a system that can reliably maintain temperatures within comfort zones while radically reducing energy consumption.

Our advanced control system maximises the use of thermal storage through the use of phase change material, fresh air and high efficiency heat pumps. The Cool-phase Hybrid ensures excellent internal comfort conditions and optimum air quality levels at the most efficient energy use possible.
The Cool-phase system is mounted within the room as a decentralised ventilation system. Each Cool-phase Hybrid unit is fitted with a low pressure heat exchanger within the Cool-phase recirculation module. The control system senses the room temperature, room air quality level and external air temperature, automatically selecting the most efficient method for ventilating and cooling the room.

What is a Monobloc Heat Pump?
The Monobloc heat pump provides chilled water during summer periods and hot water during winter periods allowing additional heating to be provided by the Cool-phase Hybrid system in winter periods. The Monobloc heat pump is fully integrated with the Cool-phase system. Integrated control logic. DC inverter compressor. R410A refrigerant within heat pump module only limits the use of refrigerants. Operates as low as -20°C.

The Monobloc heat pump is connected to the Cool-Phase system via a heat exchanger. The heat exchanger is specifically designed and optimised by Monodraught’s engineers for this application and it is integrated within the Cool-phase units. The heat pump can therefore channel chilled or hot water to the heat exchanger inside the Cool-phase
system. The heat exchanger works in conjunction with the Cool-phase’s existing recirculation unit, allowing
air to be supplied to the room or to charge the thermal batteries (PCM), depending on the requirements at a given time.


Why choose Cool-phase?
Very low running costs.
Highly energy efficient system.
Long Life and a warranty of 5 years.
Modular, scalable and adaptable design.
Creates a healthy and productive environment.
Emission savings and carbon reductions offering BREEAM credits.
Demand control ventilation enhances energy efficiency.
Environmentally friendly and sustainable solution.

Why choose Cool-phase Hybrid?
Added Benefits of the Hybrid System

Precise Temperature Control:This new system allows for more precise room temperature control as it will have the capacity required to achieve a set point temperature with consistency.

Capacity to Achieve Set Point Temperature with Consistency: In cooling mode, the thermal batteries are charged during the night when the temperature drops down. However, during certain times in the summer period, the temperature at night, especially around relatively warm buildings, cannot drop below a certain point and allow for the batteries to be charged. In such cases, the Cool-phase Hybrid system can utilise the heat pump to charge the thermal batteries, by allowing cold air to pass through them.

Charging of the Thermal Batteries when External Conditions Will Not Allow: The same principle applies during the heat recovery mode. If the inside of the building is not warm enough to provide enough heat to the batteries, the heat pump can supply air to the thermal batteries in order to fully charge them.

Provide Direct Heating or Cooling when the Thermal Batteries Run Out of Capacity: In the case that the thermal batteries run out of capacity, the new system will have the capability to cool or heat the room directly by supplying air at the required temperature.

Reduce the Number of Cool-Phase Units Required for an Application: The new system will allow the amount of Cool-phase units required for a given application to be reduced.

Support of Multiple Cool-Phase Systems: Capability of supporting multiple Cool-Phase Hybrid systems with one heat pump (Depending on heat pump capacity: 5kW-7kW).
Keeps running costs and CO2 emissions to a minimum.


Building Products Index Ltd Drainage Leave a Comment

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Llanmoor Homes, a family run housebuilder in South Wales, has turned to ACO Water Management’s StormBrixx with man access for the management of rainwater on its Rogerstone, Newport development. With the system being proposed for adoption under a Section 104 Agreement (Water Industry Act 1991) subject to the successful completion of a trial, its ease of access for monitoring and maintenance was key.

 In the past, the overriding principle of drainage on a development was to get rain water off the surface, underground and away into the water company surface water drain or combined sewer, or the nearest watercourse.  However, with increasing urbanisation, plus the effects of climate change, this design culture is no longer valid as the sewer network has become overburdened.  Following widespread flooding in 2007, the Pitt Review recommended better management of flood risk, down to site level. This was followed by the partially enacted Flood and Water Management Act being published in 2010, which intended to implement these recommendations in England and Wales.

There has been much discussion on the implementation of Schedule 3 of the Act, relating to Sustainable Drainage Systems (SuDS), which initially proposed that SuDS Approval Bodies (SABs) would be set up within local authorities and that these would approve, and automatically adopt and maintain SuDS schemes.  However, following public consultation at the end of 2014, Schedule 3 will not be implemented in England as foreseen. Instead, from April 6th, SuDS designs have to be submitted as part of the planning application process and local authorities will only adopt and maintain SuDS that are in public open spaces.  This means that developers need to take steps to arrange transfer of ownership and responsibility, through management companies and the like, for maintenance of SuDS that do not fall under the local authority’s remit – unless the SuDS system is adopted by water companies in more or less the same way that sewers sometimes are.

This therefore puts new demands on housing developers to demonstrate how surface water is to be managed at the planning stage along with ongoing maintenance of the system.

In Wales the situation is different. Some of what would have come into force under Schedule 3 through SABs is being undertaken by Dwr Cymru Welsh Water with sealed geocellular storage being adoptable under Section 104 Agreements.  Through this route, normally a developer would enter into a formal agreement in relation to the adoption of the drains and sewers. Although SuDS are not covered in the Sewers for Adoption document used by Developers and Water Companies, they are being allowed for trial projects in Wales to test different products; ACO’s man access StormBrixx at the Rogerstone site is one example.

Llanmoor Homes has been utilising SuDS solutions on a number of its developments to capture and retain as much water as possible at source and ultimately provide discharges much closer to the undeveloped state. With this attenuation system on its Rogerstone site being potentially adoptable (dependent on a successful trial), the principle of maintenance was key and therefore the system’s access and maintenance ability was paramount in its specification.

The company has utilised underground geocelluar storage systems in the past on several projects but the lack of access was a real issue. For the Rogerstone development Llanmoor Homes had a requirement for 200 m3 of attenuation and was looking to take the use of geocelluar storage to the next level in terms of the monitoring and maintenance. ACO’s StormBrixx system with its man access provision met the project’s exacting needs.  This project is providing the ideal trial for this product where it will be monitored for 12 months. It is hoped it will then become an exemplar project, showing the real benefits of utilising an accessible and maintainable system such as StormBrixx for sites such as this.

StormBrixx is designed for surface water infiltration and attenuation.  Its open cell structure allows easy access for CCTV and jetting equipment, which enables the whole system, including all the extremities, to be inspected and maintained from just a few access points.

Developers also have to consider the design of the drainage in terms of ensuring it is able to cope with extreme events of a higher intensity than the design requirements, in other words designing for exceedance.  Following the guidance in ‘Sewers for Adoption’, the Rogerstone system was designed to receive a 1 in 30 year storm event. Design of a SuDS system for a development will typically need to cope with the Environment Agency preferred 100-year return period plus 20 or 30% climate change, to cope with further weather extremities. Most usefully this is done by allowing temporary surface flooding and developers will need to consider floodable areas and demonstrate safe above ground flow paths.

For more information on ACO Water Management, visit

Permadoor – Composite doors – by popular demand!

Building Products Index Ltd Doors Leave a Comment

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Composite doors are increasingly popular and are set to stay that way. Permadoor, the UK’s original composite door manufacturer, explains why.

There’s little doubt that composite doors have been the success story in our industry over the last decade, in spite of any slowdown brought about by recession. According to a recent industry report*, annual sales of composite doors increased by an estimated 13% (compared with the total number of doors only by 7.1%). This trend will only continue, with sales volumes of composite doors expected to increase by more than 22% over the next three years.


There are many reasons why composite doors are popular, not least because of their upmarket feel and look, the excellent choice of colours and styles available, as well as their durability and thermal efficiency. They are seen as a high performance product – one that doesn’t warp or swell, and doesn’t require painting or regular maintenance. This makes them particularly attractive for both the social housing and new build applications. It is also important to note that 15% of all composite doors sold in the UK are currently specified fire doors, which is also a growth area as safety regulations around the requirement for fitting fire doors in properties are enhanced.

Permadoor offers a range of fire doors that have been successfully tested to BS476 (Parts 22 and 31). The range is available in GRP and thermoplastic and is ideal for use in all situations where Building Regulations require a fully approved FD30 or FD30S fire doorset.

The growing popularity and demand for composite doors is no doubt increased by the outstanding opportunity they provide to personalise a quality, high specification door through the extensive range of colours, styles, hardware and glazing options available.

More to offer

As the UK’s very first composite door manufacturer, Permadoor has substantial experience of this market. It offers two composite door ranges – GRP and thermoplastic – to suit different needs. Both come with a wide selection of styles, glazing and hardware options, all backed by the highest levels of quality and workmanship.

Each doorset is a high quality product, not least because of its robust sandwich structure. The thermoplastic range has an innovative solid board inner core faced with low maintenance PVC-U and edge banded. This and the colour match between the frame and door sets Permadoor apart from other composite door manufacturers. The GRP range has a strong through coloured GRP facing with a composite inner frame and high insulation foam core.

Quality with flexibility and choice

All our doors are manufactured to customers’ specific requirements, making each door unique. Each and every one is checked for size, specification and quality before delivery to ensure they are correct. The quality of these doorsets is evident with their solid build and quality finish and their pleasing and reassuring noise when closing.

Both the GRP and thermoplastic composite door ranges offer quality and choice, with traditional and contemporary styles to complement rural and urban properties in a choice of colours and finishes. All our doors come complete with a full multi-point locking system with anti-bump cylinder, keeps and handles while a full choice of hardware is available to order.

We are a Secured by Design licence holder and all our doorsets are fully compliant with the latest building regulations and standards. Our comprehensive portfolio of PAS 24 and Secured by Design products have successfully completed rigorous testing by suitably qualified and recognised third party certification authorities.

Find out more

You can find out more about the Permadoor range of composite doors and the comprehensive service and support that we offer on our website or by calling us on 01684 595200.

 *Source: The 2014 Annual PVC Window Industry Report in the UK & Republic of Ireland 

© D&G Consulting 2014 

Newton Systems Used To Waterproof The Royal Courts of Justice

Building Products Index Ltd waterproofing Leave a Comment

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Newton Specialist Basement Contractor Stonehouse Basements were commissioned to waterproof a second phase of the Royal Courts of Justice following the success of the waterproofing of the vaulted Victorian arches they undertook a few years ago.



Stonehouse installed Newton 508 Mesh cavity drain membrane to the vaults in the Judges’ Robe Rooms. This required great expertise as the membrane needed to be lapped and sealed carefully to fit the vaulted areas. The meshed membrane could then be plastered to directly.

Newton System 500 ‘Type C’ water management system was very suitable for this project as it is deemed “reversible” so meets strict Listed Building requirements

We were delighted to be involved in the second phase of this development, following the success of the first phase a few years ago” – Graham Stone, Stonehouse Basements.





Howe Green Launches New Mobile Friendly Website

Building Products Index Ltd access covers, Website Leave a Comment

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Howe Green, The UK’s leading access cover manufacturer, is proud to announce the launch of its new website. Being fully responsive, the site offers a range of new eye-catching features and user-friendly functions to deliver the best experience to mobile visitors.

Developed to cater for increasing volumes of website traffic from mobile devices, the new site was launched ahead of Google’s latest algorithm, designed to reward mobile friendly pages. As well as maintaining mobile search rankings, Howe Green’s responsive website enables visitors working away from their desks to obtain the information they want via a homepage slider, seamlessly delivering the most important content. Specifications and technical data are readily accessible and new features include fully enabled search functions, easy-to-sift content, intuitive contact forms and a quick quote builder.

“Our old site looked and performed perfectly well but business isn’t just conducted from a desk anymore. Websites must be fully functional and accessible on tablets and smartphones of all shapes and sizes,” said Richard Centa, Howe Green’s Sales and Marketing Director. “The affects of Google’s new algorithm has been a topic for debate and speculation in webmaster and SEO communities for some time but our focus has always been on meeting the needs of our customers. It was a simple decision. If our customers are looking at our site from mobile devices, which we know they are in increasing numbers, then we should do all we can to make it easy for them to find what they want. Our new site has lots of new features designed to put the information visitors need at their fingertips”.

Howe Green is one of the world’s leading manufacturers of metal fabricated floor, wall and ceiling access covers. The company has developed an outstanding brand name and a worldwide reputation for quality, customer care and service. For over 30 years, the company has been at the forefront of design and innovation in the highly specialised architectural building products sector.   Visit the new site at


Airflow Developments – New LOOVENT eco Delivers Low Energy with Multi Function Ventilation

Building Products Index Ltd Ventilation Leave a Comment

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Complementing its existing range of “ecoair” ventilation solutions, Airflow introduces the new LOOVENT eco fan.

A completely new re-design of the million selling Loovent, the fan features exceptionally quiet, two speed intermittent extraction up to 31 l/sec, or, at the flick of a switch during installation, a choice of five speed, continuous (dMEV) ventilation.
Versatile for portrait and landscape orientation, either recessed or surface mounted, the compact design represents the smallest footprint in its class.

Operating from just 2.8 watts it is economical to run and with a specific fan power of just 0.21 w/l/sec on low speed (0.41 w/l/sec on high speed), it is significantly less than the 0.5 w/l/sec for intermittent flow required by the 2010 Building Regulations.
A low energy, ball bearing, DC motor ensures long term reliability with minimal maintenance making it ideal for Social Housing applications where asset pay back is a priority.

From just 25 d(B)A it is also extremely quiet in operation and perfect for both through the wall and ducted installations. Designed with the same mounting chassis as previous Loovent models the replacement of older versions is quick and easy.
Control functions include user selectable, Delay start option, Timer, Humidity and Motion sensor

LOOVENT eco dMEV models are designed to meet the requirements of SAP Appendix Q, and feature continuous ventilation operation. At the time of installation, a constant flow of either 7 l/sec for toilets, 9 l/sec suitable for en-suites, bathrooms and utilities or 16 l/sec, suitable for kitchens, may be set to meet a whole house decentralised continuous ventilation strategy (d-MEV) for dwellings with a low air infiltration rate. An “On -Demand” boost speed enables rapid ventilation when required.

John Kelly, Marketing Manager from Airflow, said: “The Airflow Loovent brand has been a by-word for quality and reliability for decades, and this latest model range is designed to provide a quiet, low energy, multipurpose ventilation solution. It is perfect for replacing existing Loovents and for specification to reduce the carbon footprint as part of a whole house ventilation strategy, for cost effective extraction in increasingly well sealed dwellings”

SG System Products – Hygienic handrails

Building Products Index Ltd Hand rails Leave a Comment

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SG Systems have further enhanced their Sentinel stainless steel and AL 50 aluminium range of handrail and balustrade systems, with the addition of a new handrail coating that has been specifically developed for healthcare and care home environments.

The new finish incorporates SteriTouch an anti microbial additive which when added to the handrail coating provides an effective barrier against bacteria and hand borne germs such as MRSA, Ecoli and Salmonella. It is this protection that is becoming increasingly demanded by specifiers and facilities managers working within heavily trafficked areas such as hospitals, care homes, medical centres, doctors and dentists surgeries.

Available in a range of colours, handrails that incorporate the SteriTouch additive are unaffected by cleaning chemicals. An even distribution in the coating process also ensures that the anti microbial performance is not affected by scratches, abrasions and normal wear and tear associated with care environments.

The Supreme A Bespoke Electric Loft Ladder and Trapdoor

Building Products Index Ltd Loft hatches Leave a Comment

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The Supreme stairway with electrical operation are bespoke units made to suit the Customer’s specifications. The Supreme is available with a wide range of options making it the complete loft access solution.

A standard Supreme is supplied as a ready to fit unit, comprising of a concertina stairway manufactured from high strength die-cast aluminium alloy components contained within, and attached to, a laminated wood hatchbox and insulated trapdoor.

The trapdoor has a white finish to the underside.  30 minutes or 90 minutes Steel fire resistant trapdoors are also available. Made from two layers of 1.5 mm steel infilled with 38 mm of mineral wool for the 30 minute and 75 mm for the 90 minutes. The trapdoor also has a U-Value of 0.58W/ m2K tested in accordance with EN ISO 12567-1, and is Airtight Class 4 tested to EN 12207. There is a 29mm wide lip to the bottom of the lining around the external edge which is designed to butt up against the ceiling to help prevent flame and smoke ingress. Similarly, a lip to the bottom of the steel trapdoor extends to within 15 mm of the lip on the lining.

The stairway is manufactured to EN 14975 with a load bearing per tread of 200 kgs. The stairway is operated by a 24 volt low noise motor with an emergency power supply supplied by two standby batteries. The loft ladder also has an automatic stop mechanism should it come into contact with an obstacle during it’s descent. Other optional accessories can include a telescopic handrail to one or both sides, remote control, a lock switch to prevent unauthorised and so on. Supreme is also available with an optional weatherproof roof hatch in order for it to be a means of access to flat roofs.

Minimum opening hatch opening lengths and widths apply which are subject to the floor to ceiling height.  The floor to underside of ceiling height is up to 4300 mm and there’s a minimum opening length requirement of 780 mm, which varies according to the floor to ceiling height, and a minimum width requirement of 595 mm.



Bespoke Access and Step-Over Solutions from Safesite

Building Products Index Ltd Ladders, Uncategorized Leave a Comment

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Today’s congested roofs and changes in level mean that safe access to and around the roof can often be problematic.

Safesite is able to offer a more versatile solution to traditional, off the shelf safe access products such as ladders and portable access platforms with Bespoke Access Platforms and Step-Overs.   Constructed from tube and fittings to provide a robust and durable solution the platforms and step-overs can be tailored to meet virtually any configuration, height and width.

Bespoke access platforms and step-overs are modular in design and can be designed to provide safe access over pipework, plant equipment and conduits and can easily accommodate changes in level or direction.   The modular design has the added benefit of ease and speed of installation.  The structures are simply installed with a hex tool and tube cutters overcoming the need for specialist workers or equipment.  As no cutting, welding, threading or bolting is required installation time is quick and the integrity of the coating is not compromised. Any changes in design can also be made easily on site if required.


Units are available in galvanised steel or aluminium and are designed to comply with current regulations and standards such as the Work at Height Regulations, BS5395: Part 3 and EN: 14122.




Hewi – Washbasin Solutions

Building Products Index Ltd Uncategorized, washbasin Leave a Comment

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Design freedom

The washbasins made of high-quality mineral composite have a convincingly aesthetic and ergonomic design. They satisfy the highest loading capacity and hygiene requirements. They are also designed to be wheelchair accessible. Thus maximum comfort and convenience are provided through an accessible design.



Customised lengths

HEWI offers two washbasin models whose lengths can be defined individually.

The basic design has a fixed depth of 415 mm and a minimum width of 850 mm. The washbasin can be widened to a total length of up to 2800 mm. Asymmetric versions are possible. HEWI also offers a washbasin solution that meets the requirements of DIN 18040 with a depth of 550 mm.

The models have an oval basin and front-mounted support rails, which can also be used as towel rails. With the tailored washbasins, precisely fitting solutions can be implemented. The washbasins are produced accurate to the millimetre, so that the washbasins can be perfectly fitted in the sanitary area.


New washbasins M 40

From May the product range will be added to with new design washbasins. With washbasins to match the system furniture M 40 (available in the late summer 2015) HEWI offers new possibilities in bathroom design. The washbasins can be combined with matching base cabinets of the system furniture M 40 or wall mounted. Four sizes are available to choose from depending on the space available.