From survey to reinstatement, our UK-wide damp and mould specialists find the source of the moisture, remove the mould and repair the damage for social landlords, housing associations and private landlords.
National Maintenance Services are damp and mould specialists for social housing providers, housing associations, landlords and letting agents across the UK. We find the source of the moisture, remove the mould, repair the defect causing it and reinstate the affected area, including plastering, decorating and flooring. Established in 2009, we are ISO 9001:2015 and ISO 14001:2015 certified and a Constructionline Gold Member.
Every job follows the same six steps, from first report to final check.
Awaab’s Law requires social landlords in England to investigate and fix damp and mould hazards within fixed timescales, and National Maintenance Services carries out the investigations and remedial works needed to meet them.
| Requirement for social landlords | Timescale |
|---|---|
| Investigate and make safe an emergency hazard | 24 hours |
| Investigate a potential significant damp and mould hazard | 10 working days |
| Give the tenant a written summary of findings | 3 working days after the investigation |
| Complete safety work on a significant hazard | 5 working days after the investigation |
From 30 November 2026, Awaab’s Law Phase 2 extends these rules to further hazards, including excess cold, falls, fire and electrical hazards. Our fire protection and electrical teams can help with these too.
Awaab’s Law does not yet apply to private landlords. The Renters’ Rights Act 2025 allows the government to extend it to private rented homes, but no start date has been set.
As damp and mould specialists, we fix the cause of damp, not just the mould it leaves behind, and carry out both the treatment and the repairs. Established in 2009 and a Constructionline Gold Member, we work in phases or out of hours to keep disruption to residents to a minimum.
As damp specialists, our surveyors use moisture meters and thermal imaging to trace where moisture is coming from before recommending any work, so treatment targets the real cause.
Many damp problems start with a roof, render or plumbing defect. As a multi-sector maintenance contractor, we can repair the defect and reinstate plaster, decoration and flooring, so you aren’t coordinating separate trades.
Awaab’s Law has applied to social landlords in England since 27 October 2025, with fixed timescales for investigating and fixing damp and mould hazards. We carry out the investigations, written findings and remedial work that social landlords need to meet those timescales.
Damp falls into four main types, and each needs a different fix.
| Type | What it is | Common signs | How we treat it |
|---|---|---|---|
| Condensation damp | Warm, moist air meeting cold surfaces | Black mould on walls, ceilings and window frames | Ventilation improvements and mould removal |
| Rising damp | Ground moisture drawn up walls where a damp-proof course has failed or is missing | Tide marks and damaged plaster low on walls | Damp-proof courses and membrane systems |
| Penetrating damp | Water getting in through external defects | Damp patches after rain | Repair of roof defects, render, gutters or pointing |
| Leaks | Water from pipes, wastes or appliances | Localised damp, often near kitchens and bathrooms | Tracing and repairing leaking pipes |
Our comprehensive Damp and Mould Specialist services include:
Damp and Mould Surveys – A mould survey and damp assessment using moisture meters and thermal imaging to identify the source of the problem
Mould Remediation – Our mould remediation specialists safely remove visible mould and treat affected surfaces
Condensation Control – Ventilation solutions that stop the condensation behind most mould in homes
Rising Damp Treatment – Implementation of damp-proof courses and membrane systems
Penetrating Damp Solutions – Identification and repair of external defects causing water ingress
Restoration Services – Complete reinstatement of affected areas, including plastering, decorating and flooring
While these represent our core services, we’ll always conduct a thorough inspection before making recommendations, ensuring our solutions address the specific issues affecting your properties.
(Last reviewed: Sept-26 by the National Maintenance Services team. Awaab’s Law information checked against GOV.UK guidance.)
Damp and mould specialists find the source of excess moisture in a building, remove the mould it has caused and fix the underlying defect so it does not come back. A damp specialist diagnoses and fixes the moisture problem; a mould specialist removes and treats the mould. At National Maintenance Services, we cover both: the survey, mould removal, repair of the cause and reinstatement of plaster, decoration and flooring.
The main types are condensation, rising damp and penetrating damp. Condensation forms when warm, moist air meets cold surfaces and is the most common cause of mould in homes. Rising damp is ground moisture drawn up through walls where a damp-proof course has failed or is missing. Penetrating damp is water getting in through external defects such as roofs, render or gutters. Leaks from pipes and appliances can also cause damp.
Under Awaab’s Law, social landlords in England must investigate and make safe emergency hazards within 24 hours. They must investigate potential significant damp and mould hazards within 10 working days, give the tenant a written summary within 3 working days of the investigation finishing, and complete safety work within 5 working days. From 30 November 2026, the rules extend to further hazards, including excess cold, falls, fire and electrical hazards.
Not yet. Awaab’s Law currently applies to social landlords in England. The Renters’ Rights Act 2025 allows the government to extend it to private rented homes, but no start date has been set. Private landlords still have existing duties on damp and mould, including under the Homes (Fitness for Human Habitation) Act 2018.
We use phased and out-of-hours working to keep disruption to residents and building users to a minimum.
Yes. Reinstatement is part of the service, including plastering, decorating and flooring. We can also repair the causes of penetrating damp and leaks, such as roof, render and plumbing defects, through our other maintenance services.
National Maintenance Services work with clients across the UK from our base in Colwick, Nottingham.
Contact us today to discuss how our Damp and Mould Specialist services can help you maintain healthy, compliant properties while protecting your investment for the long term.
