Sprayed and hand applied liquid Waterproof systems should never be applied on damp decks. They should never be applied when the ambient temperature is not at least 3 degrees above the dew point, even if the sun is out. We rely on bond to resist outgassing.
This applies to most forms of waterproofing on decks and around basements. Even the sheet membranes normally have a primer which relies on the dry warm conditions for installation.
If you are planning a basement you should be sequencing the work so as the critical deck and external waterproofing is carried out in the spring, summer and early Autumn.
If the work has to be carried out in the winter then you have to cost in Winter primers, tenting, frost blankets, installing and removing covers, drying of surfaces and downtime when work just cannot happen unless fully tented and heated.
All of this preparation is very rarely considered even when set out in supporting information and data sheets supplied by contractors and manufacturers.
If you allow or worse force the work to happen in inappropriate weather and environmental conditions you will have failures.You cannot apply waterproofing the day after rain, you need at least a good days drying after the water has been cleared off of the deck.
On Tuesday 31st of October, we invited 30 local members of the construction industry to our head office in Salisbury to take part in a free CPD event day.
Architects and Surveyors were amongst those that joined us for two seminars by our Managing Director, Ian MacLennan, for an unrivalled look into Waterproofing whilst gaining accreditation for their CPD.
Arriving at 9:30am, our attendees were offered a hot breakfast and a chance to relax whilst introducing themselves to each other in our company bar.
As MacLennan are experts in their field; the first seminar was an in depth look in Waterproofing Design & Installation. Our key focus points in this presentation were the different types of waterproofing options available and the design considerations along with a look into failed systems, waterproofing myths and how to save money whilst avoiding pitfalls.
After the first presentation was complete, a buffet of our favourite items from local bakers, Reeves, was prepared for our guests. The October sun provided the perfect setting, allowing our guests to explore the grounds where they could meet our resident farm animals including the Donkeys and Alpacas.
We held a raffle and gave away various prizes to our guests to thank them for coming before settling into our second session of the day, 'Building Preservation'. This session not only covers different types of damp in buildings and how to investigate them, but also remedial waterproofing options that are guaranteed to conserve and are beyond beneficial to learn.
After the final presentation was complete, our guests were able to wind down in the bar and enjoy complimentary drinks whilst further getting to know their fellow attendees and the MacLennan team.
"I really enjoyed it thank you. It was well presented and left me feeling confident that we could take on a project including waterproofing as I now have someone to got to for that aspect."
"Relaxed and very informative."
"Thoroughly enjoyed the presentations, Ian came across as knowledgeable, enthusiastic and passionate about the work MacLennan do and I learnt a great deal. Having been to similar seminars in the past I particularly liked the blend of photographs, videos and props which helped to keep everyone engaged in the content being delivered."
"It was a very good day with a relaxed atmosphere. The company were friendly and polite. Great bar too!"
"Excellent, very informative."
"Well organised and a good day."
It was our pleasure to host this event and we can't wait to welcome more guests on site to share our knowledge. If you'd like to come along to our next event, please leave your email address in the form below or email enquiries@maclennanuk.com!
Thanks for registering your interest! We'll be in touch with more information.
Guarantees
MacLennan are one of the very few contractors with a Products Insurance scheme which covers all aspects of the waterproofing installation. All manufacturer schemes cover up to the value of the materials used only, and they do not cover installation.
Design
MacLennan take on design liability and have 10 million PI.
Safety
MacLennan are a safe contractor and have won awards for site safety. MacLennan managers are IOSH, All supervisors are SST, All staff are CSCS and most are NVQ2.
Organisation
MacLennan complete 200 projects per year from £5,000 - £1.6 million. MacLennan have dedicated site and contract managers, who control quality, preparation, and sequencing of work.
Qualifications
MacLennan designers are CSSW. This is a requirement of major insurers. Some are qualified Civil Engineers, most have over 30 years’ experience.
Experience
MacLennan have delivered some of the most technically challenging waterproofing contracts on some of the largest and most iconic buildings in the country - on time and within budget.
Value
MacLennan win most of their work through competitive tender. We tell you all of the cost up front. There are no hidden extras with a MacLennan design and quotation.
MacLennan take the risk out of waterproofing.
Ian MacLennan CSRT CSSW
Managing Director
Here is one of MacLennan’s vans outside the National Audit office. MacLennan are carrying out yet another large project nearby and the driver was extremely happy to be able to find parking in central London, a struggle at the best of times!