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Cedarcare

Since 1985

Rising Damp

Portfolio and Clients

Portfolio and Clients

The evidence of rising damp is usually found by the signs of a damp line appearing on the inside wall. The result of this rising damp is damage to interior plaster and wall coverings. It should also be noted that recent findings by the asthma foundation concluded that damp rooms can increase the risk of developing asthma.

Rising damp occurs when water is allowed to rise vertically through walls by capillary action and is caused by the breakdown of, bridging of, or non existence of, a damp proof course (DPC).

Other Causes of damp ingress are:

– Blocked or defective guttering system
– High ground levels bridging the DPC
– Defective pointing
– Faulty flashing on roofs or extensions
– Missing roof tiles or slates
– Mortar bridging cavity walls
– Defective window sills
– Un-vented chimney where a fireplace has been blocked in

In the case of the absence or failure of an existing damp proof course one of the simplest ways, and hence least disruptive ways, of reintroducing a new damp proof course without major building works, is the introduction of a chemical damp proof course. The Cedarcare DPC system is introduced by the injection of a special siliconate chemical into a series of bore holes made along the length of the walls requiring treatment. Once the treatment has infused into the fabric of the walls and is allowed to cure, it then forms an effective barrier against any future possibility of recurrence of rising damp. Once the treatment has infused into the fabric of the walls and is allowed to cure, it then forms an effective barrier against any future possibility of recurrence of rising damp.

The current system we adopt is:

– Silane Diffusion
– Siliconate injection
– Injection Mortar System

Rendering

As a result of rising damp (moisture rising in the walls by capillary action), the moisture will draw nitrates, chlorides and other salts from the ground.

These salts are deposited on the face of the plaster as water evaporates from the surface. They are hygroscopic, and therefore cause the face of the wall to be persistently damp, particularly during the period of high humidity even after the rising damp has been arrested.

On this basis, it is important that contaminated wall plaster and render is removed and newd salt resistant plastering is undertaken in conjunction with a new DPC injection, to create a continuous barrier against Rising Dampness and prevent the passage of residual moisture and contaminant salts from the underlying wall to the new surface.

To speak to us about a Rising Damp problem call on 020 8864 9624 or email enquiries@cedarcare.co.uk and one of our team members will be able to help – alternatively, you can contact us via our Contact Us page.

All of our surveys and remedial works are undertaken in accordance with “BS 6576:2005 Code of practice for diagnosis of rising damp in walls of buildings and installation of chemical damp-proof courses.”

Please find more details on all our service below...

Rising
Damp

Rising Damp: The evidence of rising damp is usually found by the signs of a damp line appearing on the inside wall. The result of this rising damp is damage to interior plaster and wall coverings. It should also be noted that recent findings by the asthma foundation concluded that damp rooms can increase the risk of developing asthma.

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Structural
Waterproofing

Structural Waterproofing: Increase in property value and the high prices placed on floor space in offices, shops, and residential uses in recent years make it imperative that businesses and individuals maximise the use of all available space.

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Timber
Treatment

Timber Treatment: With over 20 years experience in dry rot outbreaks from flats to manor houses, Cedarcare has the answer. With all dry rot work guaranteed for 20 years, clients can rest assured a professional job has been carried out.

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Condensation
Control

Condensation Control: Many people associate the symptoms of black mould, dampness, musty smells and steaming windows with rising damp. However, they are quite often caused by the more common problem of condensation.
In Britain, condensation in houses is mainly a winter problem particularly where warm moist air is generated in living areas and then settles on the colder parts of the building.

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