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EXTERIORS


A. Proctor Group’s new Proctor Air® awarded BBA certificate


F


ollowing its successful launch in 2024, Proctor Air has now been issued with a BBA certificate.


Specifiers, Housebuilders and Roofing


Contractors therefore have the all important verification from an independent third-party that the membrane performs as claimed. As a 4th generation family business with a history of technical innovation and promoting good practice, the A. Proctor Group Ltd advocates working with certification bodies like the British Board of Agrément to bring new product technologies to the market. Proctor Air fits that category, being a roofing membrane designed for the future. It simplifies pitched roof constructions thanks to being both air permeable and vapour permeable. In addition, its water holdout performance and wind uplift resistance ensure it is able to cope with the more frequent extreme weather driven by climate change. “An


Agrément certificate assesses a construction product’s fitness for purpose,”


said Iain Fairnington, technical director at A. Proctor Group.


“Having a BBA certificate for Proctor Air


shows we have had the product tested and assessed in relation to its intended use.” A. Proctor Group enjoyed a collaborative relationship with the BBA while getting Proctor Air certified. Monthly meetings with the designated BBA project manager ensured both parties could update each other on progress, and maintain ongoing dialogue with regard to testing schedules and product sample needs.


Certification showing that a third-party


has tested and verified the performance of a product gives the construction industry confidence that a manufacturer’s claims are genuine and accurate. Proctor Air has an Sd value of 0.015 m and a vapour resistance of 0.075 MNs/g, making it one of the highest performing vapour and air permeable membranes on the market. It is an air permeable low resistance (APLR)


ADF06_A Proctor_Structural Elements - Roofing_HPAdv.indd 1


membrane


underlay, which provides a more uniform flow of air through the roof space than normal vents. A unique feature within Proctor Air’s BBA


is the inclusion of the use of Proctor Air below PV panels. These would be treated similarly to a tight fitting outer covering. For more information visit the website.


01250 872 261 proctorgroup.com/products/proctor-air 12/06/2024 13:08


Safe and long-lasting external tiling installations with BAL


T


he last few years has seen a massive increase in the popularity of external tiling installations using a


range of materials, but primarily external self-supported porcelain (typically 20 mm porcelain), slabs, pavers and natural stone. On method of fixing is on existing or new concrete bases.


This direct fixing method is essentially the same as internal tiling and can be used for patios, terraces or driveways.


The caveat being that expansion joints need to be incorporated into the subfloor,


and falls will need to be added to ensure rainwater drains away fully.


An effective DPM should also be incorporated into any direct-to-earth subfloors – this is essential to protect the tiles from any subfloor moisture. Where necessary, you can level the fully cured surface with an external leveller, such as BAL Level Out. BAL Level Out can mixed whereby the water content can be reduced slightly if gradient levelling has to be carried. If a leveller is used, then protect this from adverse climatic conditions until hardened. Once the leveller is cured, external tiles, porcelain, slabs, pavers or natural stone can be fixed using a suitable external tile adhesive – such as BAL XL Floor One.


Some external tile adhesives – such as XL Floor One – can be used directly onto tampered concrete without the use of a leveller – this may be an option if there are time or budget constraints.


Backbuttering of the tiles should always ADF05_BAL_Landscaping & External Works_HPAdv.indd 1


be considered – particularly on heavily keyed tiles to ensure 100% coverage.


A full contact bed of adhesive is required – as spot fixing is against British standards and leads to failures and staining. Once the adhesive is dry, grouting can commence with an appropriate cementitious tile grout which is approved for external use. BAL has a special high-performance


Terrace Grout which has been designed to protect against the elements and high foot traffic. It is available in Dark Grey, Light Grey, Beige, and Black.


01782 591100 www.bal-adhesives.com 13/05/2024 14:33


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