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Chris Ross
Chris Ross
on Exterior Waterproofing
Product Specialist

Chris has spent the last 20+ years as an architectural draughtsperson and brings a new skill base to Allco's sales and QA team, providing technical support across all Allco products. 

24 May 2021

Getting Your Tanking Waterproofing Right, The First Time

allco voltec application mission bay copy

Designing, planning and selecting the right membrane for the conditions of your site are key factors to achieve watertightness on tanking jobs.

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21 September 2020

Controlling Water When Tanking for Hydrostatic Conditions

Dewatering Hero

Common problems with tanking basements that will have no drainage (hydrostatic) once the building is complete can be mitigated by implementing well-planned dewatering techniques during construction. 

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26 August 2019

Using Waterproofing Membranes as Ground Vapour Barriers

Allco bentonite 1

We are often asked whether waterproofing membranes function as vapour barriers. The answer to this question is not as straightforward as with other waterproofing membranes. 

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23 May 2019

Below-Ground Structural Design for Tanking

Volclay Voltex Allco3

Continuing from my previous blog and the question of design, I look at considerations for ensuring an effective waterproofing solution. 

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18 October 2018

Bentonite Waterproofing and Wet/Dry Cycling


There is no aspect of bentonite waterproofing that is as misunderstood as how it responds to wet/dry cycling.

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28 September 2018

Property Line Wall Substrate Preparation


Below-grade shoring wall construction often proves to be difficult to obtain and maintain along the project site perimeter. 

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23 August 2018

Testing Water Before Installing Membrane Systems

test water conditions for membrane

A detailed discussion of the water/soil compatibility test and its importance in the design of any below-grade waterproofing system.

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19 July 2018

Backfilling Bentonite Membranes

Backfilled Walls Waterproofing 16 9

This month I look at the provision of containment pressure to maintain the effectiveness of bentonite tanking membranes under both static and seismic conditions. 

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21 June 2018

Time to Talk Tanking in the Wet

tanking in the wet

Mitigating the risk of over-hydration is key to the success of a bentonite membrane — especially in wet conditions. 

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