Green Damp Proofing

Green Damp Proofing Systems, Chemical Free Damp Proof Systems

Green Damp Proofing in Yorkshire, York, Harrogate and Scarborough.

Before undertaking any repair it is essential you have your damp problem is assessed by a qualified surveyor as failing to have the problem diagnosed accurately may result in unsuccessful repair, avoidable work, expense and the risk of the problem returning.

Is your damp surveyor qualified?

We provide professional and credible damp and timber reports which are only undertaken by experienced and fully qualified surveyors who hold the National Qualification for remedial surveying C.S.R.T. awarded by the BWPDA / PCA, our industry body. This proves that our surveyors have been independently examined and tested, proving their extensive knowledge and expertise.

All of our surveys are carried out in accordance with The British Standards Code of Practice.

Green Damp Proofing Systems

Green damp proofing systems are a method of providing a dry interior finish without using chemical, electrical or slurry injected barriers. With green systems there are no visible installation holes as seen with chemical or electrical installations or unsightly air bricks in the outer walls, which makes our system completely invisible once installed.

Our green systems are ideal for historic buildings or properties constructed initially without damp proof courses allowing walls to breath naturally, promoting drying without changing the dynamics of the wall or building. Encouraging the walls to breath naturally ensures damp is not trapped within the building and reduces the risk of deterioration to the structure. Finishes are protected by a barrier to prevent against the migration of salts an inherent problem associated with the movement of ground water.

Unlike most retro-fit damp proof systems which insist on reinstating finishes using dense salt retardant plasters, our green systems can be used in combination with an array of different finishes such as; thermal insulating plasters, insulated or adhered wall lining systems. This allows the potential to improve the thermal properties of a wall in combination with resolving a damp problem, especially useful when dealing with cold properties susceptible to mould and condensation. Redecoration times can also be reduced considerably.

Due to ground water salts which move in solution with rising damp, all effective damp proof systems involve replastering. The purposes of replastering is simply to remove spoiled and salt contaminated plaster. Ground water salts mainly chlorides and nitrates are hygroscopic, which mean they are moisture absorbent and will attract moisture from the air. Salt contaminated plaster which if left in situ will absorb moisture from the atmosphere preventing the finish plaster from drying, this is why all effective systems involve replastering.

There are some companies promoting the use of European green damp proof methods or chemical free damp proofing systems which claim that replastering is not required with their system "damp proofing without the mess of replastering". These systems have no third party accreditation from the UK's largest independent testing body 'The British Board of Agrement' or are they applicable to insured guarantees, therefore if the company ceases trading customers can find they have no redress when a problem arises.

Avoiding the mess of replastering is an attractive proposition however, replastering where walls have become contaminated with salt is an essential part of any system and we recommend if your informed replastering is not needed you research the system carefully.

Read an independent review on a green damp proof system developed in Europe here: Dryfix Blog

Our environmentally friendly green damp proof systems have been used successfully in historic, period and modern buildings and are suitable to be used in any form of construction on both internal and external walls.

environmentally friendly damp proofingOur systems have been independently tested for their performance by the British Board of Agrement (BBA) and are the only chemical free damp proof systems applicable to Insurance Guarantees providing you with "Real Consumer Protection". Read here for further information on Guarantees

If you would like to know more about our 'Green' chemical free damp proof systems please do not hesitate to Contact us.

To learn more about our damp proofing systems, practices or what's involved in a damp survey read up on our blog posts: or visit our surveyors photo gallery

Suspect a Problem?

We are here to help. If you suspect a problem and require a survey, or need advice please contact us

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"We don't have to tell you we're experts, our customers do that for us" See Testimonials

Want to know more about Green Damp Proofing?

Green Damp Proofing Systems

Our green environmentally friendly damp proof systems do not involve the installation of moisture replant chemicals, electrical diodes, air bricks or slurries installed in walls to protect the structure or finishes against the effects of rising damp.

green damp proofingMost historic buildings or properties constructed prior to the 19th Century have no protection against rising damp. Instead these buildings have the ability to breath naturally allowing moisture absorbed into the fabric of the construction to evaporate freely. It is the use of lime in older buildings which allows the evaporation of moisture freely without causing damage to the structural materials or finishes. Walls were also generally painted with lime wash paints, a paint formulated from crushed and slaked lime which are also breathable and aid evaporation. Whilst damp may still occur with lime mortars this moisture will simply evaporate occasionally leaving salty deposits on the face plaster requiring redecoration form time to time this is however, generally tolerated and considered 'normal'.

In the 20th Century building techniques and practices have changed and damp proof courses were introduced under the Public Health Act 1875 to protect walls and floors against spoiling and decay from rising damp. Breathable lime renders and mortars have been replaced with modern cement renders and gypsum plasters which most are resilient to moisture, preventing evaporation and trapping dampness.

Unfortunately renovation of older buildings has meant these modern materials were often introduced unsuitably into older buildings. Lime and its wonderful properties being elastic and breathable have been replaced with dense, ridged and non breathable materials.

In the 20th century with modern interior finishes any form of spoiling or salting is intolerable. Understandably people desire old characteristic buildings with modern unspoiled interiors. In this sense it is often unsuitable to consider controlling dampness with breathable lime mortars which would inevitably salt. Considering installing chemicals or electrical diodes to control damp in historic building is also thought of as criminal and inconsiderate to the construction.

This is where green chemical free damp proofing systems offer a solution. Green damp systems can provide a dry internal finish to a building susceptible to ground water movement (rising damp) yet allowing a choice of protected finishes internally. These systems can also be used successfully in historic and period buildings in any form of construction without detriment to the structure. Our systems work by allowing the walls to breath naturally ensuring damp is not trapped yet still providing a protected finish internally against damp and salts, which any form of finish can be considered. Unlike traditional damp proofing systems which have delayed drying times preventing the use of wall papers for up to nine months, our chemical free systems can allow full redecoration within weeks.

Our systems are considerate to all forms of construction, proven to be effective and are the only chemical free damp proofing system applicable to insurance protection. If you suspect a problem and require a survey, or need advice please Contact us.

To learn more about the subject on this page read up on our blog posts;

Damp Control

Dryfix Preservation Ltd | Head Office: Unit 12, Pyramid Court, Rosetta Way, York, North Yorkshire YO6 5NB.