Timber Manufacturer Recognises Sustainability of Recycled PVC-U
One of the UK’s leading timber companies has begun sourcing 100% post-consumer recycled PVC-U cavity closers from Cavalok Building Products.
Howarth Timber (Windows & Doors) Ltd. took the decision to partner with Cavalok because it was looking for a cavity closer system that could match the same high levels of sustainability offered by its timber window range.
Cavalok is the UK’s only supplier of BBA-approved 100 per cent post-consumer recycled PVC-U cavity closers. It provides a complete solution for cavities from 50mm to 300mm+ and fire rated cavity closers.
Howarth Timber (Windows & Doors) Ltd is a leading manufacturer of high performance ‘A’ rated softwood windows along with doorsets and the Cavalok range will now become a key part of helping its specifier and developer customers achieve even lower U values.
As well as being the sustainable choice, the Cavalok range was able to exceed all the performance requirements laid down by Howarth Timber (Windows & Doors) Ltd. One of the priorities was that it could cope with the full range of larger cavity sizes now used on many buildings to accommodate additional insulation and achieve better U-values, as the 2016 zero-carbon deadline approaches.
Cavalok launched its Big Blok system in response to this regulatory shift, which now provides a perfect complement to the Howarth Timber (Windows & Doors) Ltd ‘A’ rated window system.
The super-insulating BigBlok cavity closer range allows easy closing of cavities above 125mm up to the Building Regulations maximum of 300mm. That means the system can be confidently specified for the latest zero carbon regulations such as BREEAM and the Code for Sustainable Homes.
“We are a major manufacturer of timber windows and needed a cavity closer that could demonstrate the same high levels of sustainability,” said Keith Topliss, Sales and Marketing Manager of Howarth Timber (Windows & Doors) Ltd. “The fact that the Cavalok range is made from 100 per cent post-consumer recycled material and is BBA-approved gave us the perfect solution.”
Along with BigBlok, the Cavalok product portfolio includes the market-leading Cavalok Universal closer system, which is suitable for cavities of 50mm, 75mm and 100mm, including check reveal closers, cavity barriers and headvents.
A recent new addition to the Cavalok range is FlameBlok, a one hour fire rated cavity closer, along with a new universal 200/250mm window strap fixing to suit 70mm window system for use with wider cavities, to compliment the BigBlok system.
David Deacon, General Manager of Cavalok Building Products, said: “This is a major new customer win for us and it is testament to the quality and sustainability of our recycled PVC-U products. We look forward to a long and very positive relationship with Howarth Timber (Doors & Windows) Ltd in helping it deliver low and zero carbon developments.”
To find out how Howarth Timber (Doors & Windows) Ltd can help you achieve lower U values, visit: www.howarth-timber.co.uk, or call: 01469 530577.
For more information on the Cavalok product range, visit: www.cavalok.com, or call 0870 120 3003.


