Avant Garde Damp Solutions Ltd Logo

Avant Garde Damp Solutions Ltd

+Approved member since 2008

Services and skills

  • Damp Proofer

    9 skills

    Damp Investigation

    Damp Survey

    Dry Rot Treatment

    Emergency Damp Proofing Service

    Penetrating Damp Treatment

    Rising Damp

    Structural Water Proofing

    Timber Treatment

    Woodworm Treatment

  • Services

    2 services

    • Domestic Work
    • Commercial Work


Customer reviews

Overall ratingin last 12 months

9.87Write a review
  • Workmanship10 out of 10
  • Tidiness9.83 out of 10
  • Reliability9.83 out of 10
  • Courtesy9.83 out of 10
Write a review

268 Total Reviews

The reviews below represent customers' views and not the views of Checkatrade

  • Damp proofing

    9.75Verified Review

    Clear quote on what needed doing. Workman was very pleasant and courteous. Good quality work.

    Location: HP5
  • Re-tanking bedroom wall

    10Verified Review

    Ben and his crew were highly professional, quick and tidy. They did the work to a very high standard and offered helpful advice every step of the way. I would certainly recommend them to anyone seeking similar work.

    Location: W3
  • Damp survey and subsequent repair work

    10Verified Review

    Ben came out to the property to complete the Damp Survey, he was very pleasant, informative and showed up on time. After the survey, the work was carried out to a great standard. The team showed up on time, completed the work and were very pleasant. I am very pleased with the new floor in my ground floor room. Ben followed up with his staff through the process and with me. Ben and the Team are very reliable and trustworthy, I would highly recommend them.

    Location: HP15
  • Damp treatment on basement flat in West Hampstead

    10Verified Review

    We were really pleased with the service, the team did a good job with the damp treatment. They completed the work on time and on budget- they discovered that additional work was needed during the process, honoured the original quote and still finished on time. They were flexible, starting the work with short notice and fitting us in around other bookings. They were friendly and trustworthy and we felt comfortable to leave keys with them. At the end of the job, Ben provided a decorating guide with advice on how to decorate treated walls and recommended a carpenter and decorator for follow up work.

    Location: NW6
  • Damp proofing.


    Dealt with everything efficiently.

    Location: W4
  • Fireplace Rebuild

    10Verified Review

    Big thanks to Ben and his Team who recently completed some damp work for us around our fireplace. They work very efficiently without sacrificing quality and while I left the property while work was being carried out, Ben checked in each evening out of courtesy to explain what they’d done and if I had any concerns and the same once work was completed. Their Team also did a great job of keeping the house as clean and tidy as possible. I would recommend Avant Garde (and have already done so) to anyone facing damp problems

    Location: SL4

Company profile

  • OwnerMr Ben Sullivan
  • Member Since2008
  • Public Liability InsuranceSelf-Certified
  • AccreditationsChecked
  • AddressNot Yet Checked
  • IdentityChecked
  • Checkatrade T&C'sSigned
  • VATYes: 262191515
  • Company typeLtd Company

Company info

Why choose us?

  • Members of Checkatrade since 2008 
  • Surveys carried out by fully qualified Property Care Association surveyors 
  • Verifiable work history 
  • Guarantees offered for all eligible damp proofing and timber treatments 
  • All chemicals and materials conform to British Standards 

We are leading damp specialists for both domestic and commercial customers throughout London and the South East. Properties we treat include domestic residences as well as commercial and historical buildings. We believe that taking a holistic view of your building is key to realising the cause of the issue, with the ultimate aim of providing a permanent long-term solution using more traditional building techniques.

Our services include:

Damp proofing

  • Treatment of rising damp 
  • Remedial injections 
  • Tanking of basement and cellars 
  • Rendering, (including horsehair and lime) 

Timber treatments

  • Woodworm treatment 
  • Dry rot treatment 
  • Wet rot treatment 
  • Suspended timber floor replacement 

Condensation and mould

  • Advice on condensation management and prevention 
  • Pacifier vent installation 
  • Installation of thermal insulation 

External work

  • Rendering 
  • Lime pointing 
  • Repair and replacement of render plinths 
  • French drains and pea shingle soakaways 

About Avant Garde

Our company was first established in 2003, and we became members of Checkatrade in 2008. We have over a decade of experience in damp proofing and have served thousands of satisfied customers in this time.

We have a skilled team of expert surveyors and technicians and use only the highest quality treatments. Additionally, we are Sovereign Approved Contractors and adhere to their strict requirements for workmanship and materials used. We offer a company guarantee for our treatments, including for dampness and timber issues such as dry rot.

Our success lies in our commitment to our customers and to providing the highest quality workmanship and service. From your initial enquiry through to the completion of a project, we provide friendly, personable service that stands us out from larger companies.

We offer survey appointments throughout the week and at short notice where possible. Contact us now by submitting a written request or call us directly to discuss your specific requirements.

We look forward to receiving your enquiry.

Contact details

Accreditations and awards

Sovereign Approved Contractor

Sovereign Approved Contractor