Damp Proofing Portishead

Portishead Damp Proofing & Timber Treatment

Damp Proofing Portishead Somerset (BS20): Having issues with damp in your property in Portishead should cause you a fair bit of concern, because along with the reality that damp looks unattractive, it can also have structural and health repercussions as well. Costing thousands of pounds to fix if not dealt with promptly, more extreme issues are often concealed beneath patches of damp, peeling wallpaper and flaking paint. To get the most effective damp proofing remedy for your house, you should speak to an established Portishead damp proofing specialist to check your house for issues.

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Basically, when it comes to damp within the home there are three primary problem areas:

Damp Proofing Portishead Somerset (BS20)


  • Penetrating Damp

  • Condensation

  • Rising Damp


In paragraphs that follow, we will consider what causes such damp problems, and how you can go about solving them, and preventing them from occurring in the first place.


Common external issues that may cause penetrating damp include: defective gutters or drainpipes, damaged or porous brickwork, blocked cavity walls and loose or broken roof tiles. Internal factors behind penetrating damp might be leaking or burst pipework, cracked shower trays and overflowing baths or sinks. If left uncontrolled, flaking paintwork, dark, damp patches on walls and broken or blistering plaster, will be the noticeable results of water seeping into the woodwork and walls.

If you have a leaky roof and it has been neglected for an extended period of time, it can cause wet rot to develop in the timbers of your roof. Although it cannot spread into the brickwork, wet rot can cause the timber in your roof to become structurally compromised, and in a worst case scenario you may even need to replace the entire roof - very costly! There are several indications of wet rot which aren't difficult to spot, the principle ones being; the appearance of black fungus on woodwork, a musty smell of rotten wood and a "spongy" feel to the timber. When any of these wet rot signs are noticed, it's vital to deal with the issue swiftly to prevent further structural harm and the potential need for costly roof replacement.

The means of prevention can be quite basic, for instance cleaning your roof & gutters and checking for leaks, repointing unsound brickwork and examining pipes for leaks. An experienced Portishead damp proof specialist will check all these areas to help avoid any future problems, as an integral part of fixing your damp issues.


Condensation Damp Portishead UK (01275)

Super easy to spot and a contributing factor to damp in a lot of Portishead homes, condensation is extremely common. When cooler surfaces make contact with moist, warm air, tiny droplets of water appear on those cold surfaces. Inadequate ventilation in areas with high humidity, such as in boiler rooms, bathrooms and kitchens, is the most common explanation for condensation.

Wiping up any droplets that appear, and making sure you have enough ventilation in the main trouble spots, are amongst the simplest solutions to such problems. Redirecting moist air outside of your home in Portishead, by installing or upgrading extractors, air bricks and cooker hoods, will help you to solve this issue.

A detailed damp proofing survey from a professional Portishead company could also find areas which contribute to the problem by sucking in moist air from the outside. It is essential that airflow is regulated properly, in order to control condensation problems, and you can obtain advice and guidance on this from a professional damp proofing service.

Damp Proofing Quotes in Portishead Somerset


Houses built since 1875 in the UK have required a damp proof course to be installed as standard. It's possible that you may not have one installed if your home in Portishead was built before this year. It is a possibility that your damp proof membrane or course could have been damaged in some way if you are experiencing rising damp problems in a home built after this date.

It can be hard to identify rising damp, however some giveaway signs are; a white powdery deposit being found on floor surfaces or appearing on walls, tide marks on walls and crumbling or rotten skirting boards. Whilst the existence of these is not conclusive, they are all clear indications of rising damp.

Rising Damp Portishead Somerset

The initial step towards handling your rising damp should be to simply check whether or not you have in fact got a damp proof course on the exterior walls of your home in Portishead. To be sure of an adequate degree of protection the DPM must be above ground level by a minimum of 150mm (approximately 6 inches). You could dig away the surrounding ground to create this gap if it is currently not sufficient, or you could install a DPM higher up if the former isn't feasible.

If your DPM (damp proof membrane) is in fact correct and the gap from the ground is not the cause of the problem, moisture may be rising up through your flooring and into your walls, which might be a much more problematic issue.

Portishead damp proofing experts will swiftly be able to identify the cause of your rising damp issues, and employing a number of different procedures will soon solve the problem. Older houses which either have no damp proof membrane at all, or have one that's damaged over a significant area, can have a damp proof cream (such as Permaguard or Dryzone) injected into the outside walls. This special cream is injected with a nozzle into holes drilled at intervals along the mortar course, and before the cream can set it turns into liquid and penetrates into the surrounding brickwork creating a barrier that is water-repellent.

If the damage to the DPM is too severe, or if damp proofing cream injection isn't an appropriate solution, you might need to install a brand new damp proof course. Though this is naturally a pretty drastic approach, it might be the only way to resolve your damp issues in an effective way.

Damp Proofers Portishead (BS20)

Another possible solution for less severe areas of damage could include painting on a layer a bitumen based, waterproof latex emulsion coating. This is applied under your floor coverings, so tiles, wood flooring and carpets will have to be lifted before any work can be undertaken. This is especially effective in basement areas as an integral part of the tanking procedure to create a watertight room. Before the bitumen paint has completely dried out, your Portishead damp proofing expert might suggest the laying of building paper (a special foil backed membrane), for extra protection.

Tanking: In areas of a property which are below ground, like cellars or basements, tanking is the process where exposed surfaces are covered in a watertight coating. Any plaster and wall coverings must be removed and the surfaces in question prepared properly before the commencement of any work, because this coating has to be applied at the base level of floors and walls. You can replaster the walls and decorate on top of it, as soon as the paint has dried out completely. This is an exceptionally disruptive process since it must be applied to an entire ground floor or basement level of a building, and it's preferable to get more than one specialist opinion on whether this is the only solution to your rising damp.


Dehumidifiers are a highly effective way of reducing the moisture content in the air, so for condensation issues they can be of help. The drawback with dehumidifier use in attempting to reduce damp is that they primarily hide the cause of the damp, don't cure it. If you're experiencing damp or mould in any area of your home in Portishead, you should get in touch with a professional damp proofing company for the best advice.


As with pretty much any project, the best recommendations for a professional can be gleaned from friends and neighbours. Always obtain at least 3 or 4 different quotes from various companies, and if you have any doubts you can ask to see professional memberships and qualifications, before signing up for any damp proofing services.

Professional Portishead damp proofing companies should be signed up members of either the Damp Proofing Association or the Property Care Association (PCA), or have accreditations from the Certificated Surveyor in Remedial Treatments (CSRT) or the CSTDB (Certificated Surveyor of Timber and Dampness).

If your selected Portishead damp proofing providers are in fact members of the PCA or DPA you can be sure they will be properly qualified and have the required practical experience to provide a first class service for your damp proofing problems. Such memberships also means there are certain guarantees for any remedial work undertaken.

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Dehumidifier Installation Portishead

Dehumidifiers play a vital role in ensuring healthy and comfortable indoor air quality, particularly in regions with high levels of humidity. The optimal longevity and performance of the unit are only possible with proper installation.

Dehumidifier Installation Portishead

For proper dehumidifier installation, it's vital to select a location that is free from obstructions and has a nearby power source. Adequate air circulation requires placing the unit on a flat surface and keeping it away from furniture and walls.

Properly setting up the drainage system next is vital to prevent overflow or water damage. This may involve connecting the dehumidifier to a drain or attaching a hose to the unit. Routine maintenance, such as replacing the filter and cleaning, is essential to ensure the unit operates effectively.

To ensure proper installation, it's important to take into account the dehumidifier's size concerning the room or space it will be installed in. The correct selection of a dehumidifier's location and size can have a substantial impact on its benefits and performance. It's recommended to refer to the maker's instructions or seek professional assistance to ensure a successful and safe dehumidifier installation. The installation and upkeep of a dehumidifier can reduce moisture-related problems, enhance indoor air quality, and improve overall comfort in homes or businesses when done correctly.

Cementitious Tanking Portishead

In order to prevent water intrusion in basements and underground spaces, many home and business owners turn to cementitious tanking as their preferred strategy. The floors and walls of the room are treated with a cement-based waterproofing system in this process. The tanking material can be pre-manufactured or mixed in-situ and comes in a range of grades suitable for various substratum.

Cementitious Tanking Portishead

Cementitious tanking provides a long-lasting and durable barrier against water ingress, but it must be applied correctly to achieve maximum effectiveness. Before application, the surface must be devoid of any loose material or contaminants and must be clean and dry to ensure effectiveness.

To achieve a long-lasting, high-quality result, it is recommended to choose professional installation by a qualified damp proofing specialist. With correct installation, cementitious tanking can be a dependable and effective solution for waterproofing underground spaces and cellars in Portishead. Routine maintenance is essential to extend the long-term effectiveness of cementitious tanking.

DPC Replacement Portishead

Maintaining the aesthetic appeal and structural integrity of your property in Portishead necessitates timely replacement of the Damp Proof Course (DPC). The existing DPC, over time, can deteriorate due to wear and tear, potentially leading to rising damp. Vigilant observation for signs like deteriorating brickwork, damp spots or crumbling plaster is crucial. DPC replacement involves removing the old, ineffective barrier and installing a new, robust one. This process typically requires professional expertise, as it demands precision and thoroughness to ensure a reliable seal against moisture intrusion.

The choice of materials for the new DPC can encompass a variety of options, from traditional methods like bitumen or slate to more modern solutions such as chemical injections. A successful DPC replacement not only prevents further damage caused by moisture but also helps maintain a healthy indoor environment and preserves the value of your Portishead property. Frequent inspections and timely DPC replacement can significantly contribute to ensuring your property remains dry and structurally sound. (40713 DPC Replacement Portishead)

Damp Proofing Near Portishead

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Portishead Damp Proofing Tasks

Damp Proofing Tasks Portishead

There are a wide range of tasks that can be accomplished by your local Portishead damp proofing specialist including pressure grouting, positive input ventilation (PIV), cavity wall construction, japanese knotweed control, dehumidifier installation, dampcourse installation, rendering repairs, cheap damp proofing Portishead, dry rot treatments, damp proofing assessments, timber preservation, wall damp proofing Portishead, wood rot treatments Portishead, efflorescence treatments, defective DPC replacement, damp proofing concrete floors, damp proofing in lofts, garage damp proofing, rising damp prevention, cellar tanking, missing damp proof course installations, damp proofing walls in Portishead, injection damp proofing, damp proofing quotations in Portishead, damp proofing old stone walls Portishead, damp proofing inspections, damp proof membrane installation, damp proof tanking, foundation damp proofing in Portishead, mould treatments, condensation solutions in Portishead, timber surveys Portishead, damp proofing services, damp control, plaster replacement, and more. These are just a handful of the activities that are carried out by those doing damp proofing. Portishead specialists will be happy to tell you about their whole range of services.

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(This damp proofing Portishead content was last updated on 05-12-2023)