Public evidence profile

Advanced Preservations Ltd

BuilderHampshire5.048 reviews · 1 independent public source
Credentials & registries
3 credentials shown
Companies House
Active incorporated business

No Trust Score yet

  • Rated 5.0 from 48 reviews
  • 3 credentials shown

Worth checking: TrustMark

Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.

Credentials and associations

Credentials and memberships

3

These credentials and memberships are attributed to named public sources. Check the source before relying on them.

Companies House registration

Active incorporated business

Active

Advanced Preservations Ltd is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.

Legal nameAdvanced Preservations Ltd
Company number05703119
Incorporated
Registered activitySpecialised construction
Official checkOn the public register

Why this helps you judge trust: this trader is linked to a registered company with named people who are legally accountable for it, on an official register anyone can check, a layer of accountability an unregistered trader doesn't offer. Around 20 years on the register also points to an established business rather than a brand-new one.

From customer reviews

What customers consistently say

Recurring themes from 25 customer reviews on Which? Trusted Traders.

Respectful and tidy in your home: They ensured that all furniture and floors were covered and cleaned up after work was carried out. · Which? Trusted Traders, 4 Feb 2025

Clear communicationQuoted from 2 reviews

provided a quote and clear plan to show where treatment was required · Which? Trusted Traders, 27 Feb 2026

They ensured every inch of the adjoining surgery and surrounding areas were protected and kept clean and tidy · Which? Trusted Traders, 22 Oct 2025

Source-listed gallery

Photos listed on Which? Trusted Traders

19 photos

These sources do not label every image as completed work. The gallery may include projects, people, logos or certificates, so it does not count as completed-work evidence.

Basement waterproofing - Woking, Surrey

Damp proofing - Guildford, Surrey

External waterproofing - Haslemere, Surrey

Basement waterproofing - Alton, Hampshire

External waterproofing - Southampton, Hampshire

Damp Proofing - Walton - on - Thames

Basement Waterproofing - Surbiton, Surrey

From Which? Trusted Traders

Opening hours

The hours this business publishes online, handy for knowing when to call. Confirm before you set off.

Monday–Friday
9am–5pm
Reviews · public evidence

What customers say

These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.

5.0out of 5
48 reviews in public evidence13 reviews in the last 12 monthsReviewed on public review sources since 2023Most recent review
Customers often mention
  • ProfessionalMentioned in 48% of reviews we've read
  • Tidy & cleanMentioned in 32% of reviews we've read
  • Friendly & politeMentioned in 28% of reviews we've read
Where these reviews are published
  • Which? Trusted Traders48 reviews · 5.0 avg

Detailed reviews

These are the individual reviews we hold for Advanced Preservations Ltd, including the highlights above. The 48 headline total is the review volume reported across public review sources.

Customer in Hampshire5.0 / 5 ·

Highly recommended

From the initial survey to the completion of the work Advanced Preservation were a pleasure to deal with. The remedial work for rising and penetrating damp has been finished to a high standard. All of their tradesmen were punctual, respectful and a pleasure to have in our house. Totally happy with the end result and would have no hesitation recommending this company.

Which? Trusted Traders
Customer in Oxfordshire5.0 / 5 ·

From damp to dry. Efficient and on time. Gives great confidence to build on.

The building is Victorian i.e. no cavity wall and original but crumbling bitumen DPC and raised floors. Damp and rot is a real problem here. We'd already been running dehumidifiers here for 8 months in advance of this. Advanced Preservations carried out an initial survey, assessed what damp proofing work was required to our building then provided a quote and clear plan to show where treatment was required, and instructions for site prep by our builders. The builders prepared the site as planned, clearing out rotted floors and joists plus removed all damaged and wet plaster from the walls as instructed. Advanced Preservations, were booked to make good damage to walls, inject a silicone DPC, cut brickwork for electrical backboxes and install vertical damp proofing membranes into the survey area. Some extra work was required based on what was revealed once the damaged plaster was removed, but extras were quickly quoted and approved and they got on with the work. Work was carried out by AP's team on time, swiftly and efficiently (mainly thanks to the clear planning). The site is now lined ready for our builders to return and re-build floors and get the walls plastered and the electrics installed. The damp has been a problem here for years and years and we hope and expect that this time it has really been solved by the experts! Advanced Preservations may cost a little more, but it's worth getting the basics right before refurbishing when damp is a problem. Quality work, worth it.

Which? Trusted Traders
Customer in Surrey5.0 / 5 ·

Damp Survey and Remediations

While undertaking renovations we discovered some issues with rising damp in our early 1900 house. Our builder recommended Advanced Preservations and the service we have received from them has been excellent. Peter the surveyor attended, conducted a review of the affected areas of concern and offered advice and a plan of works. This was followed up with a timely written quote and a date for the work was arranged quickly. Paul attended and completed the work within the agreed time frame. He was extremely courteous and professional and took excellent care of our property. One area of damp required further input from the surveyor to agree the appropriate treatment and Peter attended promptly and the work was completed. Based on our experience we can fully recommend this company

Which? Trusted Traders
Customer in Hampshire5.0 / 5 ·

Leak investigation

Just like to thank Matt at Advanced Preservations. He spent a long day finding my leak. Very supportive, knowledgeable, professional and friendly man. The work created a lot of mess which was all dealt with. I look forward to moving on to the next stage of the process with this company. In fact, everyone I have interacted with at the company are decent friendly people. Highly recommend

Which? Trusted Traders
Customer in Surrey5.0 / 5 ·

Superb business to deal with

We used Advanced Basements to recommission our basement following a flood, which included new walls, floor, chamber, pumps and alarm system. From the outset, the company was a pleasure to deal with, being incredibly professional and knowledgeable. Throughout the project, the staff were highly respectful of the property and responsive to any concerns we had. Management was always accessible to discuss issues with and nothing was too much trouble. We wouldn’t hesitate to use the company again – exceptional client service is not something you find easily these days, but Advanced Basements clearly takes customer satisfaction very seriously. Highly recommended.

Which? Trusted Traders
Read the other 15 detailed reviews on this page
Customer in Surrey5.0 / 5 ·

A pleasure to deal with

We are a construction company based in Virginia Water & instructed Advanced Preservations to install a damp proofing system in the estate of our client who is a high profile individual. NDA's were put in place which was handled well by AP. When onsite the team were discrete, professional and carried out the works to a very high standard. There office's communication was also timely, friendly and everything was seamless. We would thoroughly recommend Advanced Preservations, they really were a pleasure to deal with.

Which? Trusted Traders
Customer in Surrey5.0 / 5 ·

Just Excellent

From the minute I called I could not fault this company, the surveyor came out and fully explained what the problem was and how it could all be fixed. The quote came through very quickly and within 3 weeks they had started the work. From day one every member of staff that attended our house was extremely respectful and were happy to explain the process as they went along, the job was never going to be a tidy one but they fully lined our wood floors and everything was kept tidy at the end of the day so we could continue living in our house. I would and have already recommended this company to a neighbour. Highly recommended.

Which? Trusted Traders
Customer in Surrey

Professional end-to-end service by friendly people

We discovered a sinking floor near some suspicious paintwork in our hallway, and called Advanced Preservations out to take a look. They identified the problem in some damp, failing beams and carried out a very professional programme to remedy the situation, clearing out the unusable beams and damp underfloor mess, adding new beams and supports to replace the removed wood, and even improving the doorway airflow and exterior drainage to prevent the problem from returning. The price was not cheap but was entirely fair given the solid week of work put into fixing the hallway, and they were careful to minimise dust and mess. The team did an excellent tidy-up job at the end, and our hallway is now in a much safer condition and should remain so for years to come.

Which? Trusted Traders
Customer in Greater London5.0 / 5 ·

Very highly recommended

So glad we found this company and I cannot recommend them highly enough. Our Dental Surgery in a listed building was suffering a damp issue caused by sandstone steps and it was affect our equipment. We didn't know who to turn to. After making a few enquiries this company stood head and shoulders above the others. From the initial survey with Nick we were impressed by the attention to detail when explaining our options. We took a leap of faith and very glad we did. From start to finish Stefan and his colleagues were extremely respectful of the nature of our business especially as the practice remained open during the work. They ensured every inch of the adjoining surgery and surrounding areas were protected and kept clean and tidy, they liaised with our engineers when required in a professional manner as equipment had to be relocated. The kept noise to a minimum and there was very little disruption to our business. They explained everything they were doing along the way which was very reassuring. We are delighted with the results and are sure we will remain water tight for many years to come. If you have a need for this kind of service don't hesitate to call them you will not be disappointed.

Which? Trusted Traders
Customer in Surrey5.0 / 5 ·

Rising Damp in Basement - Fixed

Having previously used APL to fix our basement by installing a sump pump and membrane solution a few years ago, one of our internal walls in the basement developed a rising damp issue and was not part of the original solution. ADL as usual provided a very professional service, explaining options and the work that would need to be undertaken. This was completed whilst we were on holiday with no disruption to neighbours etc. Whilst not an inexpensive job, ADL recognised that some parts of the quote were not needed and adjusted the final invoice to reflect this. The overall process from start to finish was smooth with good communication from the works team.

Which? Trusted Traders
Customer in Surrey4.7 / 5 ·

Exceptional work

First class service, from initial damp inspection to works being carried out. The problems where well explained remedied, the works carried out are to a high standard - and the finish of the plastering was exceptional!

Which? Trusted Traders
Customer in Surrey5.0 / 5 ·

Excellent work from start to finish

The ATS team came in to fix a long standing damp issue which was causing paint damage and mould in my hallway. From the survey to reinstating my skirting boards I was very pleased with the knowledge, communication and skills of all the team members. When issues were found, options were discussed and I was able to feel confident in the decisions I took. It wasn’t an inexpensive job but I strongly feel confident that it was worth paying the ‘extra’ to fix in properly, once!

Which? Trusted Traders
Customer in Berkshire4.7 / 5 ·

Reliable and efficient damp proofing specialists

They proposed and completed a basement damp proofing remediation scheme at an acceptable price and timescale and dealt quickly with an initial fault. I am very happy to recommend them as experienced, efficient and competent specialists.

Which? Trusted Traders
Customer in Surrey5.0 / 5 ·

We have used you before so knew what to do expect. Accurate quote and timely work

The work done was in our main living area so it was good to get it done in time with little delay All work and staff was/were clean and professional

Which? Trusted Traders
Customer in Surrey5.0 / 5 ·

Revamp of our previously tanked tired cellar

We were recommended Advanced Preservations by two of our neighbours who had used them in the past. Dave came and did a thorough survey and made suggestions and didn't look horrified at the state of it! The team arrived promptly every day and worked hard. They parked considerately and were happy to repark when asked to do so. All the workers were experts in their field ie plasterer, electrician for the pump etc. Will definitely use the in the future for a French drain and will recommend them to all. Thank you everyone at Advanced Preservations! x

Which? Trusted Traders
Customer in Surrey5.0 / 5 ·

Damp experts. Professional and efficient. Highly recommend the firm.

We had Advanced Preservations sort out a damp problem in two rooms in our house. We had been recommended this firm by friends and were not disappointed. The firm was very detailed in their quote for the job and the work was carried out efficiently. The workmen were professional, polite and tidy. They ensured that all furniture and floors were covered and cleaned up after work was carried out. They were on time each day. I would not hesitate to recommend this firm.

Which? Trusted Traders
Customer in Bournemouth, Christchurch and Poole5.0 / 5 ·

Very professional

Advanced Preservations have recently carried out some external waterproofing and drainage works to remedy water ingress into our basement. We have been very happy with the service we have received. Dave, who carried out the survey and oversaw the work, has considerable expertise and was also pragmatic in his recommendations for dealing with the problem. The work was carried out in a very professional and courteous manner by all the technicians on site, particularly by Jimmy, and to a schedule which was adapted around our own commitments. The site was left clean and tidy when the works were completed. We will definitely use AP again if the need arises.

Which? Trusted Traders
Customer in Greater London5.0 / 5 ·

Professional, fast and responsive service,

Advanced preservations fixed several areas of damp in our basement flat. They were easy to deal with, did a really good job, kept the place clean and followed up with any queries quickly.

Which? Trusted Traders
Customer in Hampshire5.0 / 5 ·

Great work waterproofing my basement, very professional and friendly staff.

I recently had full waterproofing of my basement and I was very happy with the service provided. Initially Dave conducted a thorough survey and provided a waterproofing design recommendation and detailed quotation for a cavity drain membrane system. Dave was very professional and knowledgeable and the quote was very competitive compared to other quotes I received. I ordered the work and this was all completed this summer. Everything was done on time, on the dates promised, with the price exactly as quoted with no extra surprises. I found all of the operatives on site to be very professional and they took great care installing everything while looking after my property. My previously wet and damp basement is now perfectly dry and I have been very happy with the performance of the waterproofing system so far. I definitely recommend this company and would happily use them again in the future if needed.

Which? Trusted Traders
Customer in Hampshire5.0 / 5 ·

Great service, always friendly and helpful

Had my sump pump servicing again by AP. Easy to organise, gave me a date that was shortly after I’d emailed to ask for the service. Technician was knowledgeable, polite and talked me through the key points of what he was doing. Very reasonable pricing and very happy with the work. Will use again for the next service!

Which? Trusted Traders
Sources

Where this information comes from

3 named public sources

Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.

Check dates vary by source. Where we hold a date, the check shows it.

About

We are a respected, multi-award winning and recognised specialist in the fields of Damp proofing, Cellar Tanking, Basement Waterproofing, Condensation control and the installation of Timber Preservation treatments to eradicate fungal decay and wood boring insects such as Woodworm or Dry rot. We are proud to have provided reliable, practical and bespoke solutions to thousands of domestic properties nationwide. We take great care in ensuring that we understand the root causes of the problem so that we can develop the right approach to solve or combat the issue. This approach allows us to have confidence in our specifications and more importantly, the effectiveness of our Guarantees. Due to the nature of the projects we undertake, failure is not an option and the installations we design and install need to be 100% effective. We hold dedicated, industry specific insurances to make sure that we can offer the very best protection to our customers so that our extended guarantees actually mean something.

Services they list

Condensation and humidification controlInjection damp coursesTanking SystemsWoodworm treatmentTimber treatment servicestimber rotcavity drain membrane

Listed on public sources or the business's own website; check directly that they cover your job before you book.

What this business says about itself
From their own website

What this business says about itself

See their work: Facebook (opens in new tab)

Accreditations it displays. Confirm each is current on the official register before you hire:

These are statements the business makes on its own website, worth confirming in writing (and on the official registers) before you hire, not independently verified by us.

Independent checks

About this business

How long they've really been tradingThe earliest independent record of them trading is 2006, so at least 20 years. They appear in 2 separate independent sources.
Company registered2006First public review2023
A real, registered businessWe cross-checked Companies House: this business is officially registered for work that matches the builder services it advertises - independent confirmation it's a genuine business set up to do this kind of work, not just a directory entry.
Steadily reviewed13 reviews in the last 12 months, in line with their long-term review pace of about 18 a year.
Your own checks

What to check before you hire

Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Verify at the sourceCheck them yourself

This trade isn't licensed in the UK, so anyone can set up. TrustMark is the only Government-endorsed quality scheme for work in and around the home - check whether they're registered, or find a TrustMark-registered business.

Check the TrustMark register
Never pay a large deposit up front. Agree a staged payment schedule tied to completed milestones, and hold a small retention until snagging is done.
Get it in writing: an itemised quote with scope, materials, start and finish dates, and how any changes (variations) will be priced.
Be wary of a cash-only price or pressure to start tomorrow. Both are red flags for an unaccountable job.

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Good to know

Common questions about Advanced Preservations Ltd

Is Advanced Preservations Ltd a legitimate business?

Advanced Preservations Ltd has 48 independent public reviews, rated 5 out of 5. It is a registered business on Companies House, listed as active, and the public register shows no adverse status (no dissolution, insolvency or strike-off) against it. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.

What do customers say about Advanced Preservations Ltd?

Advanced Preservations Ltd has 48 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.

How do I know Advanced Preservations Ltd's reviews are genuine?

Advanced Preservations Ltd's 48 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.

Has Advanced Preservations Ltd had recent public reviews?

Advanced Preservations Ltd has 13 public reviews dated within the last 12 months. That shows their review history includes recent feedback; it does not prove current availability, so confirm capacity before hiring.

Is Advanced Preservations Ltd qualified and accredited?

We hold 3 independently sourced credentials for Advanced Preservations Ltd, including Waste carrier (Environment Agency), TrustMark, Which? Trusted Trader. Each is attributed to the body that issued it in the credentials section. For example, Waste carrier (Environment Agency) is the Environment Agency: the regulator a trader must register with to carry waste or hold an environmental permit in England.

Is Advanced Preservations Ltd a registered business?

Advanced Preservations Ltd is a registered business on Companies House (company number 05703119), incorporated 9 Feb 2006, listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.

What does Advanced Preservations Ltd specialise in?

Advanced Preservations Ltd lists specialist services including Condensation and humidification control, Injection damp courses, Tanking Systems, Woodworm treatment, Timber treatment services, timber rot. If your job is one of these, look for it in their listed services or ask them to confirm for your project.

How long has Advanced Preservations Ltd been trading?

Advanced Preservations Ltd has been reviewed on public sources since 2023.