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Endorsed by Which? Trusted Traders

Trustguard Ltd t/a Trustguard Damp Proofing

Profile thumb trustguard shield logo

36 Reviews

Opening Hours
Today - 08:00–17:00
  • Monday 08:00–17:00
  • Tuesday 08:00–17:00
  • Wednesday 08:00–17:00
  • Thursday 08:00–17:00
  • Friday 08:00–17:00
  • Saturday - Closed
  • Sunday - Closed


We are the North East's professional Building Preservation & Damp Proofing Company. Our Director, Don Cellini, is a PCAQT Qualified Technician with vast experience in all aspects of building & preservation.

Having carried out hundreds of surveys over the years, Don knows the housing stock of the North East 'inside out'.

We offer the following services;

Damp Proofing (Rising Damp & Penetrating Damp)
Woodworm Treatment
Structural Wall Repairs
Roof Renewals & Repairs
Wet Rot & Dry Rot Treatment
Condensation/Black Mould Control
Cavity Wall Tie Replacement
Basement Waterproofing
Extraction of Cavity Wall Insulation

Comprehensive survey reports by our experienced surveyor for Damp, Timber, Wall Ties, Woodworm & Basement Waterproofing.


Mortgage Retention or been let down by another company? Don't worry - with a team of qualified staff, we can usually fit you in at short notice!

Call NOW on 0191 4159471 to book a survey/quote.

What we do

  • Damp proofing and timber preservation services

    • Woodworm treatment
    • Condensation and humidification control
    • Timber treatment services
    • Injection damp courses
  • Plastering

  • Property refurbishment contractors

  • Specialised building trade contractors

  • Builders

  • More Services

    • wall tie replacement
    • cavity wall ties replacement

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

36 reviews
Customer Service
Sort by
PIV install
Customer Service
Trustguard quickly diagnosed the cause of my mould problems and recommended the solution of a PIV in my loft, without adding on expensive extras that other companies had recommended. I was impressed by the no frills approach, there was no hard sell of their products & services, just a simple suggested solution, followed by a prompt install. There was an initial delay in communications when trying to contact Don for a quote, but I suspect they are in high demand and once we were in touch, things progressed quickly and smoothly. Don was patient with my numerous questions due to my unfamiliarity with the PIV system, and I'm confident that I made the right decision in choosing Trustguard.
Customer in County Durham Posted on 14/11/2021 , work completed 05/11/2021
Excellent Service
Customer Service
I called TrustGuard as my joiner thought I might have rising damp. Don completed a thorough inspection questioned how often I opened windows, almost never, and ascertained that the problem was condensation, not rising damp. He advised on the correct course of action, the installation of a PIV unit and within a couple of days John came to fit the unit, followed by Steve who connected the unit. Everything was left clean and tidy and the whole operation from start to finish was carried out in the most professional manner. I chose TrustGuard from a search engine as it had the Which accreditation and it is the best thing I could have done. A truly impressive operation.
Customer in Tyne and Wear Posted on 06/11/2021 , work completed 05/11/2021
Great work
Customer Service
Don and his team came and did a marvellous job at putting some else’s bodge job right Very helpful and left the job so tidy rang me to say he was on his way made sure I was very happy with the job before we paid him highly recommend this company
Customer in County Durham Posted on 15/10/2021 , work completed 11/10/2021
Highly Recommended
Customer Service
An excellent service from TrustGuard Ltd. PIV Unit and damp proof course installed. Could not fault the quality of work and professionalism of this Company. Would highly recommend.
Angela in Tyne and Wear Posted on 23/09/2021 , work completed 13/09/2021
Follow up feedback
Trustguard fitted a ventilation system in Feb for me. As my previous review states, I was delighted with the service I received. However the measure of a great company is the service they provide after they have your money! This company is everything you want. I rang Don to say the system wasn't working. He arranged to come out a couple of days later, checked the system and found we had accidentally switched it off!! Oops! As I apologised profusely....Don was great took it all in his stride and couldn't have been kinder. This really is the service you would like from every company. Brilliant, thank you.
Customer in Tyne and Wear Posted on 31/08/2021 (Reviewer did not use service)
Excellent service from Don & John
Customer Service
Was buying an old house and an issue was raised with the homebuyers survey of damp in many places, contacted a couple of companies and got and a wide varied of prices which some was over the top saying the whole house needed doing, spoke to Don and asked him to carry out a survey and as you pay for this services they not trying to rip you off. We were given a moving date and arranged with Don to carry out the works ASAP once we got the keys so the work could be done before we moved in, this date fell through and this was not an issue with Don, once we finally moved in at short notice Don carried out the work straight away in the time frame given, the work was carried out by John who was excellent tidying up as he went and the work was to a great standard. Don & John was very helpful from the first conversation to the end of the job.
Patrick in Tyne and Wear Posted on 11/08/2021 , work completed 05/04/2021
Amazing service
Customer Service
Don came to give us a quote, he looked around the property himself to see what was needed - this was great for me as I’m currently working from home so I was not disturbed at all. John then came to do the work over 2 days and once again got on with what he needed to do, he cleaned up after himself and was so efficient completing the work.
Thomas in Tyne and Wear Posted on 06/05/2021 , work completed 21/04/2021
Prompt, helpful and efficient
Customer Service
Don made a thoroughly sensible assessment of the timbers in our building and carried out the work in good time, keeping us well informed along the way. Recommended.
Customer in County Durham Posted on 06/05/2021 , work completed 19/04/2021
Very Professional
Customer Service
I have been very impressed with my dealings with Trustguard from start to finish. Internet searches revealed a helpful, easy to navigate website with up-to date, useful and relevant information. Communications with Don were excellent, with prompt responses to queries and accommodating on a convenient work date. His quote was very competitive, and Don was extremely helpful at all stages; he is clearly very experienced and very knowledgeable about this specialist work. I felt confident at the outset that I was dealing with a reliable, professional company. The work was completed on time and was carried out in a considerate and very professional and efficient manner. I would not hesitate to recommend Trustguard.
Customer in County Durham Posted on 15/04/2021 , work completed 14/04/2021
Friendly, fast and efficient company
Customer Service
We called Trustguard for help and advice with a woodworm problem. Don and his team assessed the job and carried out the spray treatment very quickly and with minimum disruption. Very satisfied and all done within a week. Also, communication with Don was excellent, it was an all-around friendly but very professional experience. Would definitely recommend it.
Susan in County Durham Posted on 01/04/2021 , work completed 27/03/2021