{"id":5461,"date":"2026-10-18T09:01:46","date_gmt":"2026-10-18T09:01:46","guid":{"rendered":"https:\/\/mywarmhome.co.uk\/stage\/?page_id=5461"},"modified":"2026-10-18T09:25:49","modified_gmt":"2026-10-18T09:25:49","slug":"damp-and-mould","status":"publish","type":"page","link":"https:\/\/mywarmhome.co.uk\/stage\/damp-and-mould\/","title":{"rendered":"Damp and mould"},"content":{"rendered":"\n<style id=\"mwh-damp-guide-spacing\">.page-id-5461 .mwh2-page h2[id]{scroll-margin-top:180px}.page-id-5461 .mwh2-page details{max-width:820px;margin:16px auto;padding:16px 0;border-bottom:1px solid #d7dedf}.page-id-5461 .mwh2-page summary{cursor:pointer;font-weight:700;line-height:1.5}.page-id-5461 .mwh2-page li{margin-bottom:12px;line-height:1.65}@media(max-width:760px){.page-id-5461 .mwh2-page h2[id]{scroll-margin-top:140px}}<\/style>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-page is-layout-flow wp-block-group-is-layout-flow\">\n<div style=\"background-image:url(&apos;https:\/\/mywarmhome.co.uk\/stage\/wp-content\/uploads\/2026\/10\/damp.jpg&apos;);background-size:cover;\" class=\"wp-block-group alignfull mwh2-feature-band has-global-padding is-layout-constrained wp-block-group-is-layout-constrained has-background\">\n<p class=\"mwh2-label mwh2-label-light wp-block-paragraph\">DAMP &amp; MOULD \/ MY WARM HOME<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Damp and mould.<\/h1>\n\n\n\n<p class=\"mwh2-lead wp-block-paragraph\">Find the cause. Fix the problem. Understand where moisture comes from and what to do next.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-ribbon has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns alignwide mwh2-ribbon-grid is-layout-flex wp-container-core-columns-is-layout-794e3cfa wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"mwh2-ribbon-no wp-block-paragraph\">01<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Spot<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Notice the location and pattern.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"mwh2-ribbon-no wp-block-paragraph\">02<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Understand<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Work out where the moisture comes from.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"mwh2-ribbon-no wp-block-paragraph\">03<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Act<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Deal with mould and repair the cause.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"mwh2-ribbon-no wp-block-paragraph\">04<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Check<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Make sure the problem stays away.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-section mwh2-intro has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading alignwide\"><strong>Damp means unwanted moisture. Mould is a fungus that can grow where materials stay damp.<\/strong>.<\/h2>\n\n\n\n<nav aria-label=\"On this page\" class=\"mwh-ux-guide-nav\"><details open><summary>On this page<\/summary><ul><li><a href=\"#where\">Where to look<\/a><\/li><li><a href=\"#causes\">Why it happens<\/a><\/li><li><a href=\"#assess\">How to assess it<\/a><\/li><li><a href=\"#remove\">Cleaning and removal<\/a><\/li><li><a href=\"#repair\">Fixing the cause<\/a><\/li><li><a href=\"#check\">Checking afterwards<\/a><\/li><\/ul><\/details><\/nav>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-feature-band has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"mwh2-label mwh2-label-light wp-block-paragraph\">FIRST, PROTECT PEOPLE<\/p>\n\n\n\n<h2 id=\"help\" class=\"wp-block-heading mwh2-feature-heading\">When to get help promptly.<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Damp and mould can affect breathing and aggravate asthma. Children, older people and people with weakened immune systems may be particularly vulnerable. Speak to a healthcare professional if you are worried about symptoms. Keep vulnerable people away from mould-cleaning work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Get professional help for widespread or recurring mould, hidden growth, flood or sewage damage, or affected ventilation equipment.<\/strong> Do not disturb suspect materials. Water near electrics, a bulging wet ceiling or structural movement needs urgent professional attention; keep clear of the area.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Renting? Report damp and mould to your landlord or managing agent promptly, with photographs and dates. Ask for an investigation and a repair plan. Cleaning advice alone does not resolve a building defect.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Further reading: <a href=\"https:\/\/www.gov.uk\/government\/publications\/damp-and-mould-understanding-and-addressing-the-health-risks-for-rented-housing-providers\/understanding-and-addressing-the-health-risks-of-damp-and-mould-in-the-home--2\">UK government guidance on damp, mould and health<\/a>.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-section mwh2-intro has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"mwh2-label wp-block-paragraph\">01 \/ SPOT THE PATTERN<\/p>\n\n\n\n<h2 id=\"where\" class=\"wp-block-heading mwh2-section-heading\">Where does damp and mould appear?<\/h2>\n\n\n\n<div class=\"wp-block-columns alignwide mwh2-topic-grid is-layout-flex wp-container-core-columns-is-layout-794e3cfa wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group alignfull mwh2-topic mwh2-topic-orange has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Windows, corners and behind furniture<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Look at window edges, outside-wall corners and behind wardrobes or beds. These surfaces can be colder, with less air movement. Mould here often points towards condensation, but check for leaks too.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group alignfull mwh2-topic mwh2-topic-blue has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Ceilings, chimneys and outside walls<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A patch below a bathroom may come from plumbing. One below the roof or beside a chimney may follow rain. Check what sits above and outside the mark: water can travel before it shows.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group alignfull mwh2-topic mwh2-topic-green has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Low walls, floors and hidden spaces<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Look beside skirtings, under sinks and around baths. Damp low down can come from leaks, outside ground levels or ground moisture. A tide mark alone does not prove rising damp. A musty smell may mean hidden moisture.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Record what you see before cleaning. Patterns are clues; the same mark can have different causes.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-section mwh2-intro has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"mwh2-label wp-block-paragraph\">02 \/ UNDERSTAND THE MOISTURE<\/p>\n\n\n\n<h2 id=\"causes\" class=\"wp-block-heading mwh2-section-heading\">Four routes to a damp home.<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Condensation: water from the air<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Think of a cold drink misting up. Moist air touching a cold enough surface leaves water behind. Cooking, bathing and breathing all add moisture. A home needs a way to remove it. Cold walls, weak extraction and inadequate heating can combine to create the problem. It is not simply a sign of poor housekeeping.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Penetrating damp: rain getting in<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Rain can enter through a damaged roof, leaking gutter, cracked wall or failed window detail. A patch that grows after rain is an important clue. Wind direction may matter too.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Leaks: water escaping indoors<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Supply pipes, wastes, heating pipes and shower seals can leak into walls or floors. Some leaks are hidden and continue even in dry weather.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ground moisture: water entering at low level<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Rising damp is ground moisture drawn up through porous walls. Moisture can also enter floors in contact with the ground. Raised soil or paving can also bridge a damp-proof barrier. Check these possibilities alongside drains, plumbing and condensation before choosing treatment.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-section mwh2-intro has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"mwh2-label wp-block-paragraph\">03 \/ ASSESS BEFORE BUYING A TREATMENT<\/p>\n\n\n\n<h2 id=\"assess\" class=\"wp-block-heading mwh2-section-heading\">Start with evidence, not a quick sales pitch.<\/h2>\n\n\n\n<ol><li><strong>Make a simple record.<\/strong> Photograph the patch, note the room, date and approximate size. Does it follow rain, showers or cold mornings? Has anything changed, such as new windows or insulation?<\/li><li><strong>Look safely inside and outside.<\/strong> From ground level, check gutters, downpipes and visible roof or wall defects. Indoors, check accessible pipework, sealant, heating and fans. Do not climb onto a roof or open electrical equipment.<\/li><li><strong>Check how the home handles moisture.<\/strong> Are extract fans working and discharging outdoors? Are vents clear? A recirculating cooker hood filters cooking smells but does not send the moisture outside.<\/li><li><strong>Use measurements as clues.<\/strong> A room humidity monitor shows moisture in the air; a surface thermometer helps locate cold spots. Log readings over time. One reading cannot identify the source of a leak or diagnose a wall.<\/li><li><strong>Ask for a reasoned survey where the cause is unclear.<\/strong> The report should explain likely causes, evidence, limits of inspection and repairs, with further tests where needed.<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A damp meter is not a diagnosis.<\/strong> Electrical readings on plaster or masonry can be affected by salts and other materials. A high reading alone does not prove rising damp or justify chemical injection. Ask how the reading fits the building and the other evidence.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Further reading: <a href=\"https:\/\/www.property-care.org\/media\/n4djwicy\/codeofpractice_controlofdampnessinbuildings_jan2023.pdf\">PCA investigation and control of dampness code<\/a>.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-section mwh2-intro has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"mwh2-label wp-block-paragraph\">04 \/ CLEAN SAFELY<\/p>\n\n\n\n<h2 id=\"remove\" class=\"wp-block-heading mwh2-section-heading\">Removing mould without spreading the problem.<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For a very small patch on a washable hard surface, cleaning may be manageable if you are well enough and can follow the product instructions. If you are unsure, ask a competent mould-removal professional. Do not wait for major repairs to be finished before arranging safe mould removal.<\/p>\n\n\n\n<ol><li>Photograph the area. Keep other people away, close internal doors and ventilate the room to outside.<\/li><li>Wear suitable gloves, eye protection and respiratory protection appropriate to the task and cleaner. Follow the product\u2019s safety instructions.<\/li><li>Use an appropriate mould-and-mildew cleaner on suitable surfaces, following its label and contact time. Never mix cleaning products, especially bleach with other cleaners.<\/li><li>Avoid dry brushing, sanding or disturbing mouldy wallpaper. Wipe carefully, deal safely with used cloths and waste, and allow the surface to dry completely.<\/li><li>Mouldy absorbent materials, such as carpet, insulation or plasterboard, may need professional removal and replacement. Surface wiping may not reach the growth inside.<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Do not paint over active mould or wet materials.<\/strong> Anti-mould paint is a finishing product, not a repair for a leak, cold wall or failed ventilation. A clean-looking surface does not prove the moisture problem has gone.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Further reading: <a href=\"https:\/\/www.epa.gov\/mold\/mold-cleanup-your-home\">EPA guidance on mould cleanup<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Further reading: <a href=\"https:\/\/www.gov.uk\/government\/publications\/damp-and-mould-understanding-and-addressing-the-health-risks-for-rented-housing-providers\/understanding-and-addressing-the-health-risks-of-damp-and-mould-in-the-home--2#addressing-damp-and-mould\">UK guidance on safe removal<\/a>.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-section mwh2-intro has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"mwh2-label wp-block-paragraph\">05 \/ REPAIR THE CAUSE<\/p>\n\n\n\n<h2 id=\"repair\" class=\"wp-block-heading mwh2-section-heading\">The right fix depends on the source.<\/h2>\n\n\n\n<div class=\"wp-block-columns alignwide mwh2-topic-grid is-layout-flex wp-container-core-columns-is-layout-794e3cfa wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group alignfull mwh2-topic mwh2-topic-orange has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">If water is getting in<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Repair the roof, gutter, pipe or other confirmed defect. Deal with outside ground levels or drainage where these are responsible. Let affected materials dry, and check their condition before redecorating. Drying time depends on how wet and thick they are.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group alignfull mwh2-topic mwh2-topic-blue has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">If condensation is the problem<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Improve extraction and the supply of fresh air, keep intended vents clear and address cold surfaces and inadequate heating. Use kitchen and bathroom fans as designed. Vent a clothes dryer outdoors unless it is a suitable condensing model.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group alignfull mwh2-topic mwh2-topic-green has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">If the building is being improved<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Plan insulation, heating and ventilation together. Sealing gaps or fitting new windows changes airflow. Get advice before covering a damp wall or adding impermeable finishes, particularly in an older solid-wall home.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">A dehumidifier can help remove moisture from the air while a problem is being managed. It cannot repair a leak or replace a suitable ventilation system. If heating costs are a barrier, seek support rather than accepting a persistently damp home.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\/stage\/ventilation\/\">Understand ventilation<\/a> \u00b7 <a href=\"\/stage\/insulation\/\">Explore insulation<\/a> \u00b7 <a href=\"\/stage\/funding\/\">Find funding and support<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-section mwh2-intro has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"mwh2-label wp-block-paragraph\">06 \/ CHECK THE RESULT<\/p>\n\n\n\n<h2 id=\"check\" class=\"wp-block-heading mwh2-section-heading\">Has it actually been solved?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Keep dated photographs and compare the same places after wet weather and during colder periods. Check that repairs are complete, fans work and surfaces are drying. Revisit the problem after a few weeks and through the conditions that originally caused it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If staining, moisture, mould or a musty smell returns, reopen the investigation. Do not keep paying to repaint the same patch. The original diagnosis may be incomplete, or there may be a second source.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common questions<\/h3>\n\n\n\n<details><summary>Does black mould mean it is a particular \u201ctoxic\u201d type?<\/summary><p>Colour does not reliably identify a mould species or tell you how it will affect someone. Visible mould needs attention regardless of its colour. Routine home mould testing is usually unnecessary; finding the moisture source is more useful.<\/p><\/details><details><summary>Will opening a window solve it?<\/summary><p>It can help remove moist air when safe and practical, but it will not repair rain penetration or plumbing leaks. Persistent condensation needs a check of ventilation, heating and cold surfaces together.<\/p><\/details><details><summary>Should I buy a damp-proofing treatment straight away?<\/summary><p>First ask what is causing the damp and what evidence supports that conclusion. Treatment should follow the diagnosis, with an explanation of why it suits the building.<\/p><\/details>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull mwh2-cta has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"mwh2-label wp-block-paragraph\">INDEPENDENT HELP<\/p>\n\n\n\n<h2 class=\"wp-block-heading mwh2-cta-title\">Unsure what is making your home damp?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Guidance reviewed 18 October 2026. This page helps you recognise possible causes; an on-site assessment may be needed to confirm them.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>DAMP &amp; MOULD \/ MY WARM HOME Damp and mould. Find the cause. Fix the problem. Understand where moisture comes from and what to do next. 01 Spot Notice the location and pattern. 02 Understand Work out where the moisture comes from. 03 Act Deal with mould and repair the cause. 04 Check Make sure [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"pagelayer_contact_templates":[],"_pagelayer_content":"","footnotes":""},"class_list":["post-5461","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mywarmhome.co.uk\/stage\/wp-json\/wp\/v2\/pages\/5461","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mywarmhome.co.uk\/stage\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mywarmhome.co.uk\/stage\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mywarmhome.co.uk\/stage\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mywarmhome.co.uk\/stage\/wp-json\/wp\/v2\/comments?post=5461"}],"version-history":[{"count":8,"href":"https:\/\/mywarmhome.co.uk\/stage\/wp-json\/wp\/v2\/pages\/5461\/revisions"}],"predecessor-version":[{"id":5473,"href":"https:\/\/mywarmhome.co.uk\/stage\/wp-json\/wp\/v2\/pages\/5461\/revisions\/5473"}],"wp:attachment":[{"href":"https:\/\/mywarmhome.co.uk\/stage\/wp-json\/wp\/v2\/media?parent=5461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}