Preservation Specialists

First of all, welcome to our website.

Complete Preservation are proven qualified specialists in all remedial repairs to buildings, and we’re based in Trowbridge Wiltshire, and cover the South West.

The Company is a family business, and the owner Ross Charters CSSW CSRT is the surveyor who is in charge of the day to day running of the Company. He started his trade in the building preservation industry over 15 years ago, and is now a proven qualified leading specialist in his field. As a team Complete Preservation have over 42 years of experience in building preservation, and as a well established building preservation Company, who pride ourselves on our commitment to provide a professional and speedy service at all times, whilst maintaining the highest quality of work, and our aim is meet and exceed the expectations of every customer.

Below is Ross Charters presenting to 200 Royal Institute of Chartered Surveyors (RICS), as an expert in his field of damp diagnosis following the methodology in BRE Digest 245 he was asked to speak at this event by RICS.



We are have been involved in surveying some of the most complex building defects, and because we have heavily invested in our diagnostic equipment we have been able to solve every issue first time. Our diagnostic equipment is worth thousands, from the Flir T600 thermal imaging camera, Observator Diff anemometer, data logging equipment, aerial cameras, leak detection equipment, drain cameras, pipe trace with sonde, various meters, air quality equipment, without this equipment we wouldn’t be able to give our clients the correct diagnosis they need.

We also have our own laboratory so we can offer a complete damp diagnosis, we’re 1 of around 7 companies to offer this service in the UK. We can carry out gravimetric testing – oven-drying to BRE Digest 245 for understanding the exact capillary moisture content, and the hygroscopic moisture content, we also offer salt testing and analysis to establish the contamination of plaster, the methodology in BRE Digest 245 is the only quantitative way to test for rising damp. The laboratory methodology can also be used for quantitative damp diagnosis regarding chimney dampness issues, which is one of our specialist services we offer.  

Our professional survey reports contain a comprehensive assessment of any problems with the building, and will include pictures, cad drawings where necessary for detailed repairs as needed. We only have one surveyor and that is Ross Charters, so you can be assured that you will have our expert solving any problems that you have.


We believe any preservation Company are only as good as their technicians, we have the only fully qualified technicians in our area trained and examined by the Property Care Association who also have NVQ’S in damp proofing and timber preservation, plastering, and structural waterproofing. One of our technicians has won the Technician of year at the Property Care Association annual awards. Chief Executive of the PCA, Steve Hodgson, said: “Simon’s consistent drive to achieve has shown through his studies and reflects the level of expertise we encourage throughout the industry”

We’re full members of the Property Care Association, which is the only trade body for damp, wood preservation, structural waterproofing, flood restoration and structural maintenance

Full members of TrustMark  TrustMark is the scheme supported by the Government, consumer groups and building industry to help members of the public find reputable firms to do repair, maintenance and improvement work inside and outside a home. In order to support this important government initiative the PCA become one of the founder scheme operators.

Complete Preservation are also the chosen specialist for Wiltshire Council, Selwood Housing Association, and Greensquare Housing Association for there damp, timber, structural repair, and flooding/drying issues.

We work for many local RICS Chartered Surveyors, Estate Agents, Housing Associations, local builders, home owners, Landlords, right through to working with the main Architects of Wembley stadium, which is a testament to the quality of our services.

If you need a professional survey for diagnosis/defects, rising damp, damp, condensation and mould issues, woodworm infestation, dry rot and wet rot, basement waterproofing, structural Helifix repairs, or lime plastering rendering and pointing make Complete Preservation your first call.