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Assess
To understand what to do, we have to understand what we've got - existing waterproofing, nature of structure, patterns of dampness, other influencing factors?
Design
What to do, in what order, to reach an appropriate and lasting solution.
Implement
Complex remedial schemes often require ongoing involvement, where opening up exposes additional factors/information, leading to variations or additions to the design.
Approved & Accredited Waterproofing Contractors
We specialise in the investigation and remediation of basement waterproofing issues.
In the last ten years there have been many advances within the UK waterproofing industry across design guides, insurance requirements, waterproofing materials, training, knowledge and experience. There is now a much greater focus on the importance of quality design by qualified persons, and installation by specialist installers. The incidence of issues in finished basements is reduced.
Notwithstanding, Trace have extensive experience in dealing with basement waterproofing systems which have not performed. All forms of waterproofing systems can fail.
A typical process includes:
- Site inspection, gather available information in relation to site, structure, existing waterproofing, issues experienced and client requirements.
- Desk study of collected information, production of report with remedial strategy in line with client requirements, or:
- Undertake further (often intrusive) investigation to establish construction details or other pertinent information.
- Advise remedial strategy in line with client requirements.
- Implement strategy on site and manage installation to successful completion.
Remedial project goals:
- Address the issues present.
- Provide meaningful correspondence – analytical reports, building manuals for systems installed, guarantee paperwork and insurances, adding value to property if and when sold.
We could not have successfully completed this project without a flexible and proactive contractor, able to continuously deliver results under pressure in what were often difficult working conditions. When issues arose Trace assisted wherever they could, including where those issues did not fall directly within their remit. I would have no hesitation in recommending Trace to prospective clients”
‘Trace completed all of the works identified in the main building to a very high standard’. ‘All of the lads on site have been excellent and it has been a pleasure to work with you all.’
"Thank you so much for your generous and expert advice on how to cost effectively resolve the damp challenges at 422. Your guidance to our team has been great and given them the information and direction they need to get on with the job. Also thank you for linking us to your materials supplier so they can be sourced economically". *charity work*
"I think this is the best CDM installation I have ever seen. I have seen a lot. Everything about it is textbook. It is neat, tidy, straight, square…. Just perfect and the care and attention taken to fix the plugs to the exact centres ready for further trades is nothing less than a work of art. In addition to this, the site management is top-notch also. Everything about the project gives massive credit to Trace and all who worked on this project".
Some examples of typical remedial projects
Structural Insurance claims
A new build house will typically be covered by a ten year structural insurance policy, from NHBC, Premier Guarantees, or one of the other providers of such cover. We started dealing with claims on behalf of the insurers in 2002, and have probably undertaken more of this type of remedial work than any other in the UK. In 2012 Premier Guarantees employed us to re-write their basements technical manual (developers have to comply with this to obtain the insurance) to manage risk, which changed the industry forever as others Like NHBC followed suit in updating guidance.
Example issues we deal with –
- External barrier tanking (bitumen sheet membranes for example) installed by general or even specialist contractors, they come under water pressure, have to be perfect to function, are not and they leak.
- Service penetrations (pipes & cables running through structure) – not considered in the design, sometimes retrofitted after the waterproofing has been completed but never made good. Can be a source of significant ingress!
- Waterproof concrete structures – concrete cracks excessively (> 0.3mm) and allows water ingress. Failure of waterbars to seal construction joints allowing ingress.
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Award winning experts in dealing with problems of moisture in buildings. Est 1974.
Basement conversion issues
The purpose of waterproofing in a basement conversion, is to provide and maintain a dry space in the long term, so that investment in that space is preserved. Many systems have been installed by untrained general building contractors, or even specialist basement conversion companies set up with limited to no training or qualifications.
Example issues we deal with:
- Poor detailing – laps & seals in membrane, plug fixings poorly sealed.
- No drainage channels (membrane only drainage systems).
- No inspection ports (system not maintainable so non-compliant with BS8102), often installers don’t offer to maintain their systems leading to failure in time.
- Sump systems with 1x mains powered pump (cheapest approach), no battery back-up or mechanical redundancy. Discharge pipes bossed directly into drains (no over-flow/flood-loop detail).
- Barrier tanking specific – inadequate consideration of structure, poor surface preparation, under-appreciation or requirement for perfect (defect free) installation.
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Our case studies...
