Endorsed by Which?

Avant Garde Damp Solutions Limited


81 Reviews

Opening Hours
Today - 07:30–19:00
  • Monday 07:30–19:00
  • Tuesday 07:30–19:00
  • Wednesday 07:30–19:00
  • Thursday 07:30–19:00
  • Friday 07:30–19:00
  • Saturday 09:30–19:00
  • Sunday - Closed

What is a Which? Trusted Traders Hertfordshire Trading Standards Approved Endorsement?

Which? Trusted Traders has partnered with Hertfordshire Trading Standards to create a Hertfordshire Trading Standards Approved endorsement. In addition to our standard trading standards assessment, this trader has had a DBS check and is subject to a Trading Standards intelligence check


Established in 2003, Avant Garde has treated hundreds of properties across the South East, including domestic, commercial and historical buildings. Treatments for woodworm, dry rot and rising damp have been carried out successfully, with no signs of re-infestation.

We hold full membership with Sovereign Chemicals, the gold standard in building products, and are governed by their strict requirements as to the quality of workmanship and materials used on all our contracts. Work completed by us will be guaranteed in accordance with our specialist reports, supplied to each client after our initial visit.

COVID-19 POLICY: We are continuing to provide our expert service throughout the restrictions. Our processes have been adapted to ensure social-distancing protection is adhered to for the safety of our staff and customers (Update May 2020) .This will be updated as and when new information is available.

Ben Sullivan m:07985616724 tel: 01923350193


What we do

  • Damp proofing and timber preservation services

    • Timber treatment services
    • Injection damp courses
    • Tanking Systems
  • Plastering

    • Flat ceilings
    • Lime plastering
    • Rendering
    • Skimming
  • Tanking

  • Handyman and home maintenance services

  • More Services

    • basement refurb
    • cdm system
    • dry rot
    • woodworm
    • thermal wall

Customer reviews

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81 reviews
Customer Service
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Dry rot to damp courses and the best service you could hope for
Customer Service
The Avant Garde team have been brilliant in both their approach and execution of complex work. Communicating what to expect, providing clear pricing and always service with a smile. Work began in 2014 after discovering dry rot caused by an old leak in the utility room. Ben staged the work in order to swiftly address and contain the problem whilst fitting in and around a busy moving household. This work covered 3 ground floor rooms and when the extent of the problem was clear, Ben and the team helped convert this into an opportunity. At a later stage a separate issue relating to ground drainage and rising damp meant an chance to work with the team again and they didn't disappoint. Ben found a solution that his competitors large and small had been unable to solve - how to introduce internal wall insulation to solid walls without compromising window profiles or creating a damp hazard. Brilliant! Beautiful plaster work as well as a further job to repair and replace the external plinth to the rear of the house. Ben deserves every success and the best clients.
Which? Trusted Traders Consumer Posted on 30/08/2016 , work completed 30/08/2016
Excellent work, very professional
Customer Service
Ben and his team gave advice for additional work needed on the flat roof before he could resolve our internal damp wall. The advice was free, the roofer recommendation was excellent and Ben returned to free the Chairman's wall of damp and mould and put it in pristine condition. We have had no recurring damp problems since. Ben is friendly, knowledgeable, diligent, tidy, considerate, good value and we can highly recommend him and his Avant Garde Damp Solutions' team. Excellent job.
Dawn, Middlesex Posted on 13/04/2016 , work completed 13/04/2016
Excellent job
Customer Service
A.G.D.S made an excellent job of the damp in my basement bedroom.
Nicholas, London Posted on 15/03/2016 , work completed 15/03/2016