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Southern Specialist Treatments

  • Damp Proofer
  • Fascia / Soffits / Guttering

Ditchling Common, Hassocks, West Sussex

+Approved member since 2018
Call07458 180958
Membrane pinned ready for floor membrane

Services & Skills

  • Damp Proofer

    10 skills

    Condensation Control
    Damp Investigation
    Damp Survey
    Dry Rot Treatment
    Mould Control
    Penetrating Damp Treatment
    Rising Damp
    Structural Water Proofing
    Timber Treatment
    Woodworm Treatment
  • Fascia / Soffits / Guttering

    4 skills

    Emergency Fascia / Soffits / Guttering Service
    Fascia / Soffits Repair & Replacement
    Gutter Repair
    UPVC Guttering
  • Services

    3 services

    • Domestic Work
    • Commercial Work
    • Insurance Work Undertaken


Customer reviews

Overall ratingin last 12 months

9.92Write a review
  • Workmanship9.92 out of 10
  • Tidiness9.85 out of 10
  • Reliability9.92 out of 10
  • Courtesy10 out of 10
  • Quote Accuracy100 out of 100
Write a review

107 Total Reviews

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

  • To install a Positive Input Ventilation (PIV) unit in the loft.

    10Verified Review

    Thoroughly reliable and knowledgeable. Install was completed promptly and tidily and we are very happy with the results. Condensation gone from windows and behind furniture and loft is no longer musty.

    Location: BN25
  • Investigating water ingress on internal window arches

    10Verified Review

    In order to understand the issue that we were facing, we got in contact with several contractors, including Southern Specialist Treatments. None of the other contractors were able to identify the cause of what we believed was rainwater ingress. On the contrary, Mark was able to immediately recognize the issue as condensation and he suggested installing a Positive Input Ventilation system. From the start he was very professional, patient and available to answer our many questions. Mark and his son carried out the installation very professionally and the issue is now resolved! Totally recommend!

    Location: RH20
  • Mark assessed the levels of condensation in the house and fitted a PIV unit in the loft

    9.75Verified Review

    We have had large amounts of condensation in the house over this winter, leading to patches of black mould, and had spent a large amount on a damp survey which was very unhelpful. When I contacted Mark he was helpful from the start, looked at the survey report for us, came out and carried out his own survey at no additional cost, offered the most cost effective solution we had offered up to this point and well as answering lots of questions and offering advice. The unit was fitted within a very quick time frame and we have been so impressed we have asked Mark to do several other jobs for us!

    Location: RH12
  • Installing Positive Input Ventilation

    10Verified Review

    Mark visited my property quickly found the issue and recommended installing a positive input ventilation system to sort a damp and mould issue , installed quickly and has made a huge difference and sorted what was a bad situation , Mark and Colleague were very knowledgeable and helpful throughout and I would highly recommend them

    Location: RH16
  • Damp proofing under the stairs where damp was coming from under the floor

    10Verified Review

    Mark and son, Nick, did a first class job from start to finish. Mark used advanced equipment to diagnose the problem and thought carefully about the best solution. He decided that they should strip the area back to the brickwork, apply CDM (cavity drain membrane), install new plaster board and then re-plaster. Mark and Nick worked tidily and kept mess to a minimum. Each stage of the work was carried out to a very high standard. They were courteous, friendly and professional throughout. I'm confident the problem is sorted. I highly recommend their services without reservation.

    Location: RH17
  • Installation of a PIV unit

    10Verified Review

    I had a issue with condensation and mould around windows. Mark came and done survey and suggested I have a PIV unit installed in the loft and assured me this would solve the problem. He came back 10 days later and installed unit. Nothing was too much trouble, he even checked out bathroom extractor find to see if it was working.. He was respectful of property and left it clean after work had been done. Would highly recommend this company and would use again. And there has been no condensation since work was done

    Location: RH6
Read all 107 reviews

Company Profile

  • OwnerMr Mark Stoner
  • Member Since2018
  • Public Liability InsuranceSelf-Certified
  • AccreditationsChecked
  • AddressChecked
  • IdentityChecked
  • Checkatrade T&C'sSigned
  • VATNo
  • Company typeLtd Company

Company info

Here at Southern Specialist Treatments, we are family run and owned. This helps us keep a close relationship with our customers and work with them to find the most suitable damp control and timber preservation solutions. 

Our approach starts with a free survey under taken by either Mark Stoner or Nicholas Stoner, this allows us to discover and identify the current problem you are experiencing. (We can also diagnose issues you are experiencing by providing us with photos).

One of the issues we commonly find are other damp and remedial companies trying to make customers problems fit their range of solutions, unfortunately this approach often results in unnecessary remedial treatments and continued problems. 

We offer our customers more than just standardise damp-proofing and timber treatment, for example we like to keep buildings as they should be and we are heritage lime plastering experts, modern gypsum plasters are one of the main causes of damp in older properties. 

 The range of work we do;

  • Rising damp 
  • Penetrating damp
  • Type ‘C’ cavity Membrane systems
  • Sump & pump (including servicing and break downs) 
  • Dpc injection
  • Ceminticious tanking
  • Basement/Cellar conventions
  • Wood worm
  • Dry rot
  • Wet rot
  • Wall ties 
  • Condensation control
  • Venting
  • Air bricks
  • Salt contamination
  • Flow and return heat recovery unit installers
  • PIV unit installers
  • Heritage lime plastering
  • Heritage lime rendering
  • Plastering 
  • Skimming
  • Dry lining, insulation and soundproofing
  • Insurance backed guarantees available

Due to customer demand we are now able to add the following services. 

  • Gutter Unblocking, Repairs and Cleaning 
  • Driveways, Patios and Paths Cleaned
  • Decking Cleaned 
  • Graffiti Removal
  • Render Cleaning
  • Driveways, Pathways and Patios Re-Sanded, Sealing and Re-Pointed 

We have the latest in High performance cleaning equipment that allows us not just to cold jet wash, We have the facility to offer a hot wash service which protects your surfaces and also allows us to clean far more efficiently. 

Putting our customers at the centre of what we do has been a corner stone and driving force helping us grow, In-line with other remedial damp proofing companies we have started charging to attend home/site visits and to provide estimates. This is to cover high fuel charges and travel costs.

This cost will allow us to diagnose and provide an estimate diagnosing the problem your property is experiencing and we will offer advice on the most effective way to remedy the problem. This will then allow the information to be passed onto your builder for him/her to carry out any works required or if you accept our estimate then the charge will be refunded against these works. No Job to big or small.



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Accreditations and awards