Diagnosis, repair and redecoration by one in-house team. You deal with one company from the first survey to the finished job.
CHAS accredited contractorIndependently audited for health and safety by the UK's trusted standard for contractor compliance and risk management.
Constructionline Gold memberVerified to the industry’s Common Assessment Standard, including health and safety checks.
Safeguard expert installerExperienced in specifying and installing Safeguard membrane systems, with years of installations on damp repairs.
Biokil approved contractorApproved to specify and apply Biokil damp and timber treatments.We find and fix leaks, damp, rot and woodworm, then carry out the restoration and redecoration, all with our own in-house team.
For unexplained damp patches, ceiling stains, a boiler losing pressure, or a leak between flats nobody can pin down.
£450 + VAT per leak, incl. report and repair quotation
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For damp patches, peeling paint, black mould or a musty smell that keeps coming back.
For finishing the job once the damp or leak is fixed, so the property is handed back ready to use.
For soft, crumbling or cracked timber, fungal growth or a musty smell around woodwork. We trace the source of moisture, treat or replace the affected timber and reinstate the area, all with our own team.
Wet rot from around £500 + VAT, dry rot from around £1,500 + VAT
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For small exit holes, fresh bore dust or weakened timber in floors, joists or roof timbers. We identify the infestation, treat it with low-odour, water-based preservatives and repair or replace any damaged timber.
From around £400 + VAT
View serviceWhy choose us
8 steps, one team
13 steps, two or three companies
Our process
The same team diagnoses the damp, repairs it and redecorates, so you deal with one company from the first survey to the finished property.
We survey the property with thermal imaging, acoustic sensors, tracer gas and 3D scanning, so we can locate a leak or the source of damp, usually without opening up walls. You get our findings in writing, with an itemised quotation for the repair.
Our own team removes the damp and damaged render, injects a damp-proof barrier into the wall and fixes a waterproof membrane over it. The wall is dry-lined the same day, so we do not wait weeks for it to dry out.
We tape and joint the boards, which are ready to decorate 30 minutes after the repair. We then decorate, refit the skirting boards and joinery, and hand the property back ready to use.
Areas we cover
We work across London and the surrounding areas, and will go further if you need us to.
London
Every borough, north and south of the river
Surrounding counties
Hertfordshire, Essex, Kent, Surrey, Berkshire and Buckinghamshire
Not sure if we cover your area?
Get in touch and we'll let you know.
Damp proofing and redecoration in a lower-ground flat, with the original stone arches restored.
Rising damp traced with thermal imaging, then treated and redecorated across the hallway and bedroom.
Damp proofing and redecoration of a commercial basement WC and corridor, with the walls stripped back to brick and sealed.
What clients say
"Ross and the team were so helpful and professional. I cannot recommend them more and will be working with them again."
Ellie Hickling
"Perlini are by far the best contractors I have worked with. I am always confident they will find a solution to even the most difficult problems and their work is always to an exceptional standard."
Dom Chan
"Excellent service all the way through including communication. The completed work was great! Very efficient and cleaned up brilliantly afterwards too. First-class service!"
Lewis Portar
"Excellent communication and highest level of professionalism as they have not only resolved long standing issues but present reports in a timely manner and support with client/manager relations. Will continue to use."
Karl Bradley
"Top quality damp correction experts well versed in traditional and proven techniques of damp diagnosis, correction and prevention. Highly skilled team taking pride in their work. Work is of the highest quality and always in sympathy with the building. Quote process transparent and comprehensive. Highly recommended."
J H
"I highly recommend Rosco & Perlini. A friend introduced me to this company and I couldn't be happier. Not only was the damp dealt with, but the standard of work was excellent. The team was very professional and informative. My house was left looking clean, tidy and dry."
James Barber
"Really impressed with this company and would definitely recommend. Everyone we met was friendly and polite. Communication was clear and prompt throughout. The causes of our damp issues were identified and the work to remedy them carried out to a high standard. Timescales were realistic and kept to. A good experience from beginning to end and will be using them again should the need arise."
Tom Stacey
"We had a water leak in our kitchen that had caused a lot of damage to the walls. Ross was amazing from the start, and gave excellent advice about dealing with the insurers. The team did great work and I am so happy I chose this company. Absolutely 100% would recommend."
Charlotte Newland
"Ross and his guys could not have done a better job!!! He was so helpful from the start offering great advice and carrying out the most amazing transformation to my basement flat. I really could not recommend him and his team more. Will definitely be using them for any ongoing work I have in the future."
Rose Gordon
Trusted by leading property managers, housing associations and facilities teams across the UK. From nationwide portfolios to independent estates, our clients rely on us to trace leaks between flats, treat damp and repair the damage, with one team handling every job from the investigation to the redecoration.
